512 lines
18 KiB
PHP
512 lines
18 KiB
PHP
<?php
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declare(strict_types=1);
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ini_set('display_errors', '1');
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error_reporting(E_ALL);
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session_start();
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$loggedIn = isset($_SESSION['user_id']);
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$pageTitle = 'Kometen - AstroTools';
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$headerIntroPre = 'Himmel & Planeten';
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$headerIntroTitle = 'Kometen';
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$headerIntroSub = 'Interessante Kometen aus der MPC-Datenbank mit Fokus auf bevorstehende und aktuelle Periheldurchgaenge.';
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function h(?string $value): string
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{
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return htmlspecialchars((string) $value, ENT_QUOTES, 'UTF-8');
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}
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function formatDecimalGerman(?float $value, int $decimals = 3): string
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{
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if ($value === null || !is_finite($value)) {
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return '-';
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}
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return number_format($value, $decimals, ',', '.');
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}
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function buildPerihelionDate(array $row): ?DateTimeImmutable
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{
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$year = isset($row['year_of_perihelion']) ? (int) $row['year_of_perihelion'] : 0;
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$month = isset($row['month_of_perihelion']) ? (int) $row['month_of_perihelion'] : 0;
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$dayValue = isset($row['day_of_perihelion']) ? (float) $row['day_of_perihelion'] : 0.0;
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if ($year === 0 || $month < 1 || $month > 12 || $dayValue <= 0) {
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return null;
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}
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$day = (int) floor($dayValue);
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if ($day < 1 || $day > 31) {
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return null;
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}
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$fractionalDay = $dayValue - $day;
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$seconds = (int) round($fractionalDay * 86400);
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try {
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$date = new DateTimeImmutable(sprintf('%04d-%02d-%02d 00:00:00', $year, $month, $day), new DateTimeZone('UTC'));
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} catch (Throwable $e) {
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return null;
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}
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return $date->modify(sprintf('+%d seconds', $seconds));
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}
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function classifyOrbitType(string $orbitType): string
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{
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return match (strtoupper(trim($orbitType))) {
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'P' => 'Periodisch',
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'C' => 'Nicht periodisch',
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'I' => 'Interstellar',
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'D' => 'Verschollen / zerfallen',
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'A' => 'Asteroidal',
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default => trim($orbitType) !== '' ? trim($orbitType) : '-',
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};
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}
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function estimatePerihelMagnitude(?float $absoluteMagnitudeH, ?float $perihelionDistanceAu): ?float
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{
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if ($absoluteMagnitudeH === null || !is_finite($absoluteMagnitudeH) || $perihelionDistanceAu === null || !is_finite($perihelionDistanceAu) || $perihelionDistanceAu <= 0.0) {
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return null;
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}
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$heliocentricDistance = max(0.05, $perihelionDistanceAu);
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$geocentricDistance = max(0.2, abs(1.0 - $perihelionDistanceAu));
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return $absoluteMagnitudeH
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+ (5.0 * log10($geocentricDistance))
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+ (10.0 * log10($heliocentricDistance));
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}
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$config = require __DIR__ . '/../config/database.php';
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$dsn = sprintf(
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'mysql:host=%s;dbname=%s;charset=%s',
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$config['host'],
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$config['dbname'],
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$config['charset'] ?? 'utf8mb4'
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);
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$pdo = new PDO(
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$dsn,
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$config['user'],
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$config['pass'],
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[
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PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
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PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
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]
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);
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$userId = isset($_SESSION['user_id']) ? (int) $_SESSION['user_id'] : 0;
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$today = new DateTimeImmutable('today', new DateTimeZone('UTC'));
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$windowStart = $today->modify('-180 days');
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$windowEnd = $today->modify('+365 days');
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$queryYearMin = (int) $windowStart->format('Y') - 1;
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$queryYearMax = (int) $windowEnd->format('Y') + 1;
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$stmtComets = $pdo->prepare("
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SELECT
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c.*,
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CASE WHEN auc.`comet_id` IS NULL THEN 0 ELSE 1 END AS `is_tracked`,
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CASE WHEN auc.`is_favorite` = 1 THEN 1 ELSE 0 END AS `is_favorite`
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FROM `comets_mpc` c
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LEFT JOIN `app_user_comets` auc
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ON auc.`comet_id` = c.`id`
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AND auc.`user_id` = :user_id
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WHERE c.`year_of_perihelion` BETWEEN :year_min AND :year_max
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OR auc.`comet_id` IS NOT NULL
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ORDER BY c.`year_of_perihelion` ASC, c.`month_of_perihelion` ASC, c.`day_of_perihelion` ASC, c.`designation_and_name` ASC
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");
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$stmtComets->execute([
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':user_id' => $userId,
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':year_min' => $queryYearMin,
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':year_max' => $queryYearMax,
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]);
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$allComets = [];
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$trackedComets = [];
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$interestingComets = [];
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foreach ($stmtComets as $row) {
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$perihelionDate = buildPerihelionDate($row);
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$daysFromToday = $perihelionDate ? (int) floor(($perihelionDate->getTimestamp() - $today->getTimestamp()) / 86400) : null;
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$row['perihelion_date_object'] = $perihelionDate;
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$row['perihelion_date_display'] = $perihelionDate ? $perihelionDate->setTimezone(new DateTimeZone('Europe/Berlin'))->format('d.m.Y H:i') . ' UTC' : '-';
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$row['days_from_today'] = $daysFromToday;
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$row['orbit_type_label'] = classifyOrbitType((string) ($row['orbit_type'] ?? ''));
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$row['absolute_magnitude_display'] = isset($row['absolute_magnitude_h']) && $row['absolute_magnitude_h'] !== null
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? formatDecimalGerman((float) $row['absolute_magnitude_h'], 1)
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: '-';
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$row['slope_parameter_display'] = isset($row['slope_parameter_g']) && $row['slope_parameter_g'] !== null
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? formatDecimalGerman((float) $row['slope_parameter_g'], 1)
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: '-';
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$row['perihelion_dist_display'] = formatDecimalGerman(isset($row['perihelion_dist_au']) ? (float) $row['perihelion_dist_au'] : null, 3);
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$row['eccentricity_display'] = formatDecimalGerman(isset($row['eccentricity']) ? (float) $row['eccentricity'] : null, 4);
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$row['inclination_display'] = formatDecimalGerman(isset($row['inclination_deg']) ? (float) $row['inclination_deg'] : null, 2);
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$estimatedPerihelMagnitude = estimatePerihelMagnitude(
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isset($row['absolute_magnitude_h']) && $row['absolute_magnitude_h'] !== null ? (float) $row['absolute_magnitude_h'] : null,
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isset($row['perihelion_dist_au']) && $row['perihelion_dist_au'] !== null ? (float) $row['perihelion_dist_au'] : null
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);
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$row['estimated_perihel_magnitude'] = $estimatedPerihelMagnitude;
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$row['estimated_perihel_magnitude_display'] = $estimatedPerihelMagnitude !== null
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? formatDecimalGerman($estimatedPerihelMagnitude, 1)
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: '-';
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$allComets[] = $row;
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if ((int) ($row['is_tracked'] ?? 0) === 1) {
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$trackedComets[] = $row;
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}
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if ($perihelionDate !== null && $perihelionDate >= $windowStart && $perihelionDate <= $windowEnd) {
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$interestingComets[] = $row;
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}
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}
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usort($trackedComets, static function (array $left, array $right): int {
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$favoriteCompare = ((int) $right['is_favorite']) <=> ((int) $left['is_favorite']);
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if ($favoriteCompare !== 0) {
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return $favoriteCompare;
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}
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return ((int) ($left['days_from_today'] ?? PHP_INT_MAX)) <=> ((int) ($right['days_from_today'] ?? PHP_INT_MAX));
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});
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usort($interestingComets, static function (array $left, array $right): int {
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$leftDistance = abs((int) ($left['days_from_today'] ?? PHP_INT_MAX));
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$rightDistance = abs((int) ($right['days_from_today'] ?? PHP_INT_MAX));
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if ($leftDistance !== $rightDistance) {
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return $leftDistance <=> $rightDistance;
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}
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return strcmp((string) $left['designation_and_name'], (string) $right['designation_and_name']);
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});
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$interestingComets = array_slice($interestingComets, 0, 24);
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$orbitTypeCounts = [];
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foreach ($allComets as $comet) {
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$orbitKey = (string) ($comet['orbit_type'] ?? '?');
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$orbitTypeCounts[$orbitKey] = ($orbitTypeCounts[$orbitKey] ?? 0) + 1;
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}
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arsort($orbitTypeCounts);
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?>
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<?php require __DIR__ . '/header.php'; ?>
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<style>
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.comets-layout {
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display: grid;
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gap: 1.25rem;
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}
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.comets-intro {
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color: #d9e7ff;
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line-height: 1.65;
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margin: 0;
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}
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.comets-summary {
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display: grid;
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grid-template-columns: repeat(4, minmax(0, 1fr));
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gap: 0.9rem;
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}
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.comets-stat {
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padding: 1rem 1.1rem;
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border-radius: 1rem;
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border: 1px solid rgba(130, 170, 255, 0.16);
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background:
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radial-gradient(circle at top left, rgba(82, 153, 255, 0.12), transparent 36%),
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linear-gradient(180deg, rgba(13, 19, 33, 0.96), rgba(8, 11, 20, 0.98));
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}
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.comets-stat-label {
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color: #9db2d4;
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font-size: 0.82rem;
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text-transform: uppercase;
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letter-spacing: 0.08em;
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}
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.comets-stat-value {
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margin-top: 0.45rem;
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color: #ffffff;
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font-size: 1.8rem;
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font-weight: 700;
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}
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.comets-stat-help {
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margin-top: 0.35rem;
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color: #c7d6f4;
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font-size: 0.92rem;
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}
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.comets-card {
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padding: 1.2rem;
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}
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.comets-card h2 {
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margin-bottom: 0.45rem;
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}
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.comets-card .hint {
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margin-top: 0;
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}
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.comets-chip-row {
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display: flex;
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flex-wrap: wrap;
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gap: 0.7rem;
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margin-top: 1rem;
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}
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.comets-chip {
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padding: 0.45rem 0.7rem;
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border-radius: 999px;
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border: 1px solid rgba(130, 170, 255, 0.18);
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background: rgba(255, 255, 255, 0.04);
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color: #dce8ff;
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font-size: 0.92rem;
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}
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.comets-table-wrap {
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overflow-x: auto;
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}
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.comets-table {
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width: 100%;
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border-collapse: collapse;
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margin-top: 1rem;
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}
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.comets-table th,
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.comets-table td {
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padding: 0.78rem 0.8rem;
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border-bottom: 1px solid rgba(130, 170, 255, 0.12);
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text-align: left;
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vertical-align: top;
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}
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.comets-table th {
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color: #a9bee0;
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font-size: 0.84rem;
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text-transform: uppercase;
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letter-spacing: 0.08em;
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}
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.comets-table td {
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color: #eef4ff;
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}
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.comets-name {
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font-weight: 600;
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}
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.comets-meta {
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display: flex;
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flex-wrap: wrap;
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gap: 0.45rem;
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margin-top: 0.35rem;
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}
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.comets-badge {
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display: inline-flex;
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align-items: center;
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gap: 0.35rem;
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padding: 0.22rem 0.5rem;
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border-radius: 999px;
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font-size: 0.8rem;
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color: #eef4ff;
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background: rgba(255, 255, 255, 0.08);
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border: 1px solid rgba(255, 255, 255, 0.12);
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}
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.comets-badge.is-favorite {
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background: rgba(255, 208, 102, 0.12);
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border-color: rgba(255, 208, 102, 0.28);
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color: #ffd98b;
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}
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.comets-badge.is-tracked {
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background: rgba(130, 170, 255, 0.12);
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border-color: rgba(130, 170, 255, 0.26);
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color: #bfd6ff;
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}
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.comets-days {
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font-weight: 600;
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}
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.comets-days.is-past {
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color: #ffb2a8;
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}
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.comets-days.is-upcoming {
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color: #b8f0c8;
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}
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@media (max-width: 960px) {
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.comets-summary {
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grid-template-columns: repeat(2, minmax(0, 1fr));
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}
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}
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@media (max-width: 640px) {
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.comets-summary {
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grid-template-columns: 1fr;
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}
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}
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</style>
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<div class="comets-layout">
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<section class="card comets-card">
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<p class="comets-intro">
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Diese erste Version liest die vorhandenen Kometen direkt aus <code>comets_mpc</code> und hebt Objekte hervor,
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deren Perihel zwischen <strong><?= h($windowStart->format('d.m.Y')) ?></strong> und
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<strong><?= h($windowEnd->format('d.m.Y')) ?></strong> liegt.
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Nutzer-Favoriten aus <code>app_user_comets</code> werden zusaetzlich separat gezeigt.
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</p>
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<p class="hint">
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Die Spalte <strong>m grob</strong> ist eine sehr einfache Helligkeitsschaetzung nahe dem Perihel
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auf Basis von MPC-<code>H</code> und <code>q</code>. Sie ist nur als Orientierung gedacht.
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</p>
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<div class="comets-chip-row">
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<?php foreach (array_slice($orbitTypeCounts, 0, 5, true) as $orbitType => $count): ?>
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<span class="comets-chip"><?= h(classifyOrbitType((string) $orbitType)) ?>: <?= (int) $count ?></span>
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<?php endforeach; ?>
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</div>
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</section>
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<section class="comets-summary">
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<div class="comets-stat">
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<div class="comets-stat-label">Kometen im Blickfenster</div>
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<div class="comets-stat-value"><?= count($interestingComets) ?></div>
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<div class="comets-stat-help">Perihel im aktuellen Zeitfenster</div>
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</div>
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<div class="comets-stat">
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<div class="comets-stat-label">Meine Kometen</div>
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<div class="comets-stat-value"><?= count($trackedComets) ?></div>
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<div class="comets-stat-help">Aus den Favoriten uebernommen</div>
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</div>
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<div class="comets-stat">
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<div class="comets-stat-label">Gesamt in Datenbank</div>
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<div class="comets-stat-value"><?= count($allComets) ?></div>
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<div class="comets-stat-help">Geladene Datensaetze im relevanten Jahresbereich</div>
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</div>
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<div class="comets-stat">
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<div class="comets-stat-label">Zeitraum</div>
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<div class="comets-stat-value"><?= h($today->format('Y')) ?></div>
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<div class="comets-stat-help"><?= h($windowStart->format('d.m.Y')) ?> bis <?= h($windowEnd->format('d.m.Y')) ?></div>
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</div>
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</section>
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<section class="card comets-card">
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<h2>Meine Kometen</h2>
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<?php if (empty($trackedComets)): ?>
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<p class="hint">Du hast aktuell noch keine Kometen in deinen Favoriten. In <a href="my_favorites.php">Favoriten</a> kannst du welche markieren.</p>
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<?php else: ?>
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<div class="comets-table-wrap">
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<table class="comets-table">
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<thead>
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<tr>
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<th>Komet</th>
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<th>Typ</th>
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<th>Perihel</th>
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<th>Abstand</th>
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<th title="Sehr grobe Helligkeitsschaetzung nahe dem Perihel.">m grob</th>
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</tr>
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</thead>
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<tbody>
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<?php foreach ($trackedComets as $comet): ?>
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<?php
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$daysClass = ((int) ($comet['days_from_today'] ?? 0)) < 0 ? 'is-past' : 'is-upcoming';
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$daysLabel = $comet['days_from_today'] === null
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? '-'
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: ((int) $comet['days_from_today'] === 0
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? 'Heute'
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: (((int) $comet['days_from_today'] > 0 ? '+' : '') . (int) $comet['days_from_today'] . ' Tage'));
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?>
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<tr>
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<td>
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<div class="comets-name"><?= h((string) $comet['designation_and_name']) ?></div>
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<div class="comets-meta">
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<?php if ((int) $comet['is_favorite'] === 1): ?>
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<span class="comets-badge is-favorite">Favorit</span>
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<?php endif; ?>
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<span class="comets-badge is-tracked">Beobachtet</span>
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<?php if (!empty($comet['reference_text'])): ?>
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<span class="comets-badge"><?= h((string) $comet['reference_text']) ?></span>
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<?php endif; ?>
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</div>
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</td>
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<td><?= h((string) $comet['orbit_type_label']) ?></td>
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<td><?= h((string) $comet['perihelion_date_display']) ?></td>
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<td><span class="comets-days <?= $daysClass ?>"><?= h($daysLabel) ?></span></td>
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<td title="Sehr grobe Helligkeitsschaetzung nahe dem Perihel."><?= h((string) $comet['estimated_perihel_magnitude_display']) ?></td>
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</tr>
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<?php endforeach; ?>
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</tbody>
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</table>
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</div>
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<?php endif; ?>
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</section>
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<section class="card comets-card">
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<h2>Interessante Kometen</h2>
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<p class="hint">Sortiert nach Naehe zum heutigen Datum bezogen auf den Periheldurchgang.</p>
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<?php if (empty($interestingComets)): ?>
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<p class="hint">Im aktuellen Zeitfenster wurden keine Kometen gefunden.</p>
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<?php else: ?>
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<div class="comets-table-wrap">
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<table class="comets-table">
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<thead>
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<tr>
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<th>Komet</th>
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<th>Typ</th>
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<th>Perihel</th>
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<th>Abstand</th>
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<th title="Sehr grobe Helligkeitsschaetzung nahe dem Perihel.">m grob</th>
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<th>H</th>
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<th>G</th>
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</tr>
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</thead>
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<tbody>
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<?php foreach ($interestingComets as $comet): ?>
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<?php
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$daysClass = ((int) ($comet['days_from_today'] ?? 0)) < 0 ? 'is-past' : 'is-upcoming';
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$daysLabel = $comet['days_from_today'] === null
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? '-'
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: ((int) $comet['days_from_today'] === 0
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? 'Heute'
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: (((int) $comet['days_from_today'] > 0 ? '+' : '') . (int) $comet['days_from_today'] . ' Tage'));
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?>
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<tr>
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<td>
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<div class="comets-name"><?= h((string) $comet['designation_and_name']) ?></div>
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<div class="comets-meta">
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<?php if ((int) $comet['is_favorite'] === 1): ?>
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<span class="comets-badge is-favorite">Favorit</span>
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<?php elseif ((int) $comet['is_tracked'] === 1): ?>
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<span class="comets-badge is-tracked">Beobachtet</span>
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<?php endif; ?>
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<?php if (!empty($comet['reference_text'])): ?>
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<span class="comets-badge"><?= h((string) $comet['reference_text']) ?></span>
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<?php endif; ?>
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</div>
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</td>
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<td><?= h((string) $comet['orbit_type_label']) ?></td>
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<td><?= h((string) $comet['perihelion_date_display']) ?></td>
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<td><span class="comets-days <?= $daysClass ?>"><?= h($daysLabel) ?></span></td>
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<td title="Sehr grobe Helligkeitsschaetzung nahe dem Perihel."><?= h((string) $comet['estimated_perihel_magnitude_display']) ?></td>
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<td><?= h((string) $comet['absolute_magnitude_display']) ?></td>
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<td><?= h((string) $comet['slope_parameter_display']) ?></td>
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</tr>
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<?php endforeach; ?>
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</tbody>
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</table>
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</div>
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<?php endif; ?>
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</section>
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</div>
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<?php require __DIR__ . '/footer.php'; ?>
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