482P/PANSTARRS
メタデータ
| 項目 | 値 |
|---|---|
| Designation | 482P/PANSTARRS |
| Type | P |
| Perihelion (tp_cal, UTC) | 2023-06-01T11:41:00.064320Z |
| Orbit solution date (soln_date, UTC) | 2024-05-14T12:42:42Z |
| Obs used | 97 |
| NEO | - |
| M1 | 17.000 |
| K1 | 4.500 |
| PC | - |
| Discovery observation (MPC, UTC) | 2014-11-10T09:56:26.880000Z |
| Discovery magnitude (MPC) | 20.20 i |
| Discovery observatory (MPC) | F51 · Pan-STARRS 1, Haleakala |
オスキュレーティング軌道要素
| 項目 | 値 |
|---|---|
| Epoch (epoch_cal, TDB) | 2022-03-17.0000000 |
| e | 0.49292758 |
| q (au) | 1.907487 |
| a (au) | 3.761765 |
| i (deg) | 24.516413 |
| Ω (om, deg) | 126.216135 |
| ω (w, deg) | 339.380217 |
| M (ma, deg) | 300.360460 |
等級
散乱 + 全体線形
$$ M_a = (15.788 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
モデル定数
| 項目 | 値 |
|---|---|
| H0 | 15.788 |
| n | 2.000 |
| gf | 1.000 |
| gb | -1.000 |
| k | 1.000 |
| δ90 | 10.000 |
| パラメータ | 記号 | 範囲 | 説明 |
|---|---|---|---|
| 太陽・地球距離が1 AUのときの絶対等級 | H0 | -5 to 20 | 彗星の固有の明るさ |
| 測光スロープパラメータ | n | 2 to 6 | 太陽距離に対する明るさ変化率 |
| 前方散乱非対称係数 | gf |
0.8 to 1 | 前方散乱の強さ |
| 後方散乱非対称係数 | gb |
-1 to -0.5 | 後方散乱の強さ |
| 分配係数 | k | 0.8 to 1 | 前方/後方散乱の寄与比 |
| ダスト/ガス明るさ比 | δ90 | 1 to 10 | ダスト散乱とガス放射の相対寄与 |
参考: EPSC-DPS2025-160
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) | 終了日 (UTC) | a | b |
|---|---|---|---|
| 2021-08-09 | 2022-12-22 | -1.3509 | +0.947 |
| 2024-01-20 | 2024-05-10 | +11.6926 | -5.860 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
ファインディングチャート
天体暦
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-06-01 00:00 | 18:43:33.43 | -07:30:14.6 | HIP 91867 | 13.85 |
| 2026-06-01 12:00 | 18:43:18.83 | -07:30:25.0 | HIP 91867 | 14.77 |
| 2026-06-02 00:00 | 18:43:04.10 | -07:30:36.3 | HIP 91728 | 15.45 |
| 2026-06-02 12:00 | 18:42:49.25 | -07:30:48.4 | HIP 91728 | 13.12 |
| 2026-06-03 00:00 | 18:42:34.28 | -07:31:01.4 | HIP 91728 | 11.52 |
| 2026-06-03 12:00 | 18:42:19.18 | -07:31:15.2 | HIP 91728 | 11.02 |
| 2026-06-04 00:00 | 18:42:03.96 | -07:31:29.9 | HIP 91728 | 11.78 |
| 2026-06-04 12:00 | 18:41:48.63 | -07:31:45.4 | HIP 91728 | 13.61 |
| 2026-06-05 00:00 | 18:41:33.18 | -07:32:01.8 | HIP 91676 | 15.92 |
| 2026-06-05 12:00 | 18:41:17.61 | -07:32:19.0 | HIP 91676 | 17.17 |
| 2026-06-06 00:00 | 18:41:01.94 | -07:32:37.1 | HIP 91676 | 19.15 |
| 2026-06-06 12:00 | 18:40:46.15 | -07:32:56.1 | HIP 91532 | 18.41 |
| 2026-06-07 00:00 | 18:40:30.25 | -07:33:15.9 | HIP 91532 | 15.99 |
| 2026-06-07 12:00 | 18:40:14.25 | -07:33:36.6 | HIP 91532 | 14.25 |
| 2026-06-08 00:00 | 18:39:58.14 | -07:33:58.2 | HIP 91532 | 13.48 |
| 2026-06-08 12:00 | 18:39:41.93 | -07:34:20.6 | HIP 91502 | 13.10 |
| 2026-06-09 00:00 | 18:39:25.62 | -07:34:43.9 | HIP 91502 | 13.92 |
| 2026-06-09 12:00 | 18:39:09.22 | -07:35:08.0 | HIP 91502 | 15.80 |
| 2026-06-10 00:00 | 18:38:52.71 | -07:35:33.1 | HIP 91502 | 18.43 |
| 2026-06-10 12:00 | 18:38:36.12 | -07:35:59.0 | HIP 91332 | 20.63 |
| 2026-06-11 00:00 | 18:38:19.43 | -07:36:25.7 | HIP 91332 | 18.63 |
| 2026-06-11 12:00 | 18:38:02.65 | -07:36:53.4 | HIP 91275 | 14.53 |
| 2026-06-12 00:00 | 18:37:45.79 | -07:37:21.9 | HIP 91275 | 10.40 |
| 2026-06-12 12:00 | 18:37:28.84 | -07:37:51.3 | HIP 91275 | 6.36 |
| 2026-06-13 00:00 | 18:37:11.81 | -07:38:21.6 | HIP 91275 | 2.89 |
| 2026-06-13 12:00 | 18:36:54.70 | -07:38:52.8 | HIP 91275 | 3.55 |
| 2026-06-14 00:00 | 18:36:37.51 | -07:39:24.8 | HIP 91275 | 7.33 |
| 2026-06-14 12:00 | 18:36:20.25 | -07:39:57.7 | HIP 91275 | 11.49 |
| 2026-06-15 00:00 | 18:36:02.92 | -07:40:31.5 | HIP 91275 | 15.76 |
| 2026-06-15 12:00 | 18:35:45.52 | -07:41:06.2 | HIP 91275 | 20.08 |
| 2026-06-16 00:00 | 18:35:28.05 | -07:41:41.8 | HIP 91031 | 18.77 |
| 2026-06-16 12:00 | 18:35:10.52 | -07:42:18.2 | HIP 91031 | 14.40 |
| 2026-06-17 00:00 | 18:34:52.93 | -07:42:55.5 | HIP 91031 | 10.04 |
| 2026-06-17 12:00 | 18:34:35.27 | -07:43:33.6 | HIP 91031 | 5.72 |
| 2026-06-18 00:00 | 18:34:17.57 | -07:44:12.7 | HIP 91031 | 1.95 |
| 2026-06-18 12:00 | 18:33:59.81 | -07:44:52.5 | HIP 91031 | 3.78 |
| 2026-06-19 00:00 | 18:33:42.00 | -07:45:33.3 | HIP 91031 | 8.04 |
| 2026-06-19 12:00 | 18:33:24.14 | -07:46:14.9 | HIP 91031 | 12.46 |
| 2026-06-20 00:00 | 18:33:06.23 | -07:46:57.4 | HIP 90911 | 14.43 |
| 2026-06-20 12:00 | 18:32:48.29 | -07:47:40.7 | HIP 90911 | 12.28 |
| 2026-06-21 00:00 | 18:32:30.30 | -07:48:24.9 | HIP 90911 | 11.57 |
| 2026-06-21 12:00 | 18:32:12.28 | -07:49:09.9 | HIP 90911 | 12.54 |
| 2026-06-22 00:00 | 18:31:54.22 | -07:49:55.8 | HIP 90911 | 14.89 |