63P/Wild 1
メタデータ
| 項目 | 値 |
|---|---|
| Designation | 63P/Wild 1 |
| Type | P |
| Perihelion (tp_cal, UTC) | 2013-04-11T01:59:05.988480Z |
| Orbit solution date (soln_date, UTC) | 2026-05-28T12:51:39Z |
| Obs used | 2695 |
| NEO | - |
| M1 | 7.400 |
| K1 | 24.750 |
| PC | 0.030 |
オスキュレーティング軌道要素
| 項目 | 値 |
|---|---|
| Epoch (epoch_cal, TDB) | 2016-02-27.0000000 |
| e | 0.65108433 |
| q (au) | 1.952094 |
| a (au) | 5.594745 |
| i (deg) | 19.784742 |
| Ω (om, deg) | 357.970522 |
| ω (w, deg) | 169.126150 |
| M (ma, deg) | 78.345713 |
等級
散乱 + 全体線形
$$ M_a = (9.881 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
モデル定数
| 項目 | 値 |
|---|---|
| H0 | 9.881 |
| n | 6.000 |
| gf | 1.000 |
| gb | -0.500 |
| 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 |
|---|---|---|---|
| 2025-10-24 | 2026-03-12 | +40.8158 | -14.180 |
| 2026-03-12 | 2026-06-05 | +6.5265 | -2.121 |
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 | 08:44:38.17 | +25:47:17.4 | HIP 42891 | 14.61 |
| 2026-06-01 12:00 | 08:45:42.13 | +25:39:00.5 | HIP 43111 | 18.42 |
| 2026-06-02 00:00 | 08:46:46.10 | +25:30:42.4 | HIP 43111 | 2.38 |
| 2026-06-02 12:00 | 08:47:50.07 | +25:22:23.0 | HIP 43111 | 15.06 |
| 2026-06-03 00:00 | 08:48:54.05 | +25:14:02.5 | HIP 43111 | 31.71 |
| 2026-06-03 12:00 | 08:49:58.04 | +25:05:40.7 | HIP 43502 | 24.26 |
| 2026-06-04 00:00 | 08:51:02.03 | +24:57:17.7 | HIP 43502 | 18.65 |
| 2026-06-04 12:00 | 08:52:06.03 | +24:48:53.5 | HIP 43554 | 20.71 |
| 2026-06-05 00:00 | 08:53:10.04 | +24:40:28.1 | HIP 43548 | 25.91 |
| 2026-06-05 12:00 | 08:54:14.04 | +24:32:01.4 | HIP 43871 | 27.65 |
| 2026-06-06 00:00 | 08:55:18.05 | +24:23:33.6 | HIP 43871 | 13.04 |
| 2026-06-06 12:00 | 08:56:22.06 | +24:15:04.6 | HIP 43871 | 11.96 |
| 2026-06-07 00:00 | 08:57:26.07 | +24:06:34.4 | HIP 44078 | 20.04 |
| 2026-06-07 12:00 | 08:58:30.08 | +23:58:03.0 | HIP 44078 | 3.50 |
| 2026-06-08 00:00 | 08:59:34.10 | +23:49:30.4 | HIP 44078 | 14.00 |
| 2026-06-08 12:00 | 09:00:38.11 | +23:40:56.6 | HIP 44262 | 6.41 |
| 2026-06-09 00:00 | 09:01:42.12 | +23:32:21.7 | HIP 44262 | 18.86 |
| 2026-06-09 12:00 | 09:02:46.12 | +23:23:45.6 | HIP 44262 | 35.34 |
| 2026-06-10 00:00 | 09:03:50.13 | +23:15:08.3 | HIP 44586 | 29.91 |
| 2026-06-10 12:00 | 09:04:54.13 | +23:06:29.9 | HIP 44586 | 16.63 |
| 2026-06-11 00:00 | 09:05:58.12 | +22:57:50.3 | HIP 44586 | 15.54 |
| 2026-06-11 12:00 | 09:07:02.12 | +22:49:09.6 | HIP 44768 | 11.26 |
| 2026-06-12 00:00 | 09:08:06.10 | +22:40:27.7 | HIP 44808 | 13.39 |
| 2026-06-12 12:00 | 09:09:10.08 | +22:31:44.7 | HIP 45004 | 14.21 |
| 2026-06-13 00:00 | 09:10:14.06 | +22:23:00.6 | HIP 45004 | 18.02 |
| 2026-06-13 12:00 | 09:11:18.02 | +22:14:15.3 | HIP 45033 | 19.61 |
| 2026-06-14 00:00 | 09:12:21.98 | +22:05:29.0 | HIP 45033 | 28.64 |
| 2026-06-14 12:00 | 09:13:25.93 | +21:56:41.5 | HIP 45272 | 39.79 |
| 2026-06-15 00:00 | 09:14:29.87 | +21:47:52.9 | HIP 45272 | 33.22 |
| 2026-06-15 12:00 | 09:15:33.80 | +21:39:03.3 | HIP 45473 | 23.01 |
| 2026-06-16 00:00 | 09:16:37.71 | +21:30:12.5 | HIP 45473 | 16.10 |
| 2026-06-16 12:00 | 09:17:41.62 | +21:21:20.7 | HIP 45473 | 24.25 |
| 2026-06-17 00:00 | 09:18:45.51 | +21:12:27.9 | HIP 45671 | 23.73 |
| 2026-06-17 12:00 | 09:19:49.39 | +21:03:33.9 | HIP 45671 | 22.55 |
| 2026-06-18 00:00 | 09:20:53.25 | +20:54:39.0 | HIP 45747 | 27.84 |
| 2026-06-18 12:00 | 09:21:57.10 | +20:45:42.9 | HIP 45747 | 34.69 |
| 2026-06-19 00:00 | 09:23:00.92 | +20:36:45.9 | HIP 46076 | 18.42 |
| 2026-06-19 12:00 | 09:24:04.74 | +20:27:47.9 | HIP 46076 | 7.22 |
| 2026-06-20 00:00 | 09:25:08.53 | +20:18:48.8 | HIP 46249 | 9.49 |
| 2026-06-20 12:00 | 09:26:12.31 | +20:09:48.8 | HIP 46249 | 14.50 |
| 2026-06-21 00:00 | 09:27:16.06 | +20:00:47.7 | HIP 46419 | 14.86 |
| 2026-06-21 12:00 | 09:28:19.80 | +19:51:45.7 | HIP 46419 | 5.90 |
| 2026-06-22 00:00 | 09:29:23.51 | +19:42:42.7 | HIP 46419 | 21.49 |