10P/Tempel 2
メタデータ
| 項目 | 値 |
|---|---|
| Designation | 10P/Tempel 2 |
| Type | P |
| Perihelion (tp_cal, UTC) | 2015-11-14T09:27:49.507200Z |
| Orbit solution date (soln_date, UTC) | 2026-05-11T09:02:37Z |
| Obs used | 4979 |
| NEO | - |
| M1 | 14.700 |
| K1 | 4.500 |
| PC | - |
オスキュレーティング軌道要素
| 項目 | 値 |
|---|---|
| Epoch (epoch_cal, TDB) | 2014-05-23.0000000 |
| e | 0.53698315 |
| q (au) | 1.418763 |
| a (au) | 3.064171 |
| i (deg) | 12.029245 |
| Ω (om, deg) | 117.808733 |
| ω (w, deg) | 195.524160 |
| M (ma, deg) | 260.700881 |
等級
散乱 + 全体線形
$$ M_a = (14.025 + 2.720\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
モデル定数
| 項目 | 値 |
|---|---|
| H0 | 14.025 |
| n | 2.720 |
| gf | 1.000 |
| gb | -0.810 |
| k | 0.988 |
| 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 |
|---|---|---|---|
| 2023-12-15 | 2026-04-07 | +37.8378 | -9.051 |
| 2026-04-07 | 2026-02-25 | -4.1469 | +1.595 |
| 2026-02-25 | 2026-05-18 | -1.0593 | +0.455 |
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) |
|---|---|---|---|---|
| 2026-05-12 00:00 | 19:32:58.96 | -08:24:03.8 | HIP 96147 | 24.27 |
| 2026-05-12 12:00 | 19:33:55.96 | -08:22:56.4 | HIP 96147 | 27.34 |
| 2026-05-13 00:00 | 19:34:52.92 | -08:21:50.8 | HIP 96147 | 36.16 |
| 2026-05-13 12:00 | 19:35:49.84 | -08:20:47.0 | HIP 96147 | 47.62 |
| 2026-05-14 00:00 | 19:36:46.72 | -08:19:45.1 | HIP 96654 | 34.83 |
| 2026-05-14 12:00 | 19:37:43.55 | -08:18:45.2 | HIP 96654 | 21.56 |
| 2026-05-15 00:00 | 19:38:40.35 | -08:17:47.3 | HIP 96654 | 10.68 |
| 2026-05-15 12:00 | 19:39:37.10 | -08:16:51.4 | HIP 96654 | 12.59 |
| 2026-05-16 00:00 | 19:40:33.81 | -08:15:57.8 | HIP 96754 | 18.59 |
| 2026-05-16 12:00 | 19:41:30.47 | -08:15:06.3 | HIP 96883 | 22.70 |
| 2026-05-17 00:00 | 19:42:27.09 | -08:14:17.1 | HIP 97016 | 9.86 |
| 2026-05-17 12:00 | 19:43:23.67 | -08:13:30.3 | HIP 97016 | 7.06 |
| 2026-05-18 00:00 | 19:44:20.21 | -08:12:45.9 | HIP 97022 | 19.44 |
| 2026-05-18 12:00 | 19:45:16.70 | -08:12:04.0 | HIP 97173 | 26.31 |
| 2026-05-19 00:00 | 19:46:13.15 | -08:11:24.6 | HIP 97350 | 13.77 |
| 2026-05-19 12:00 | 19:47:09.56 | -08:10:47.8 | HIP 97350 | 1.67 |
| 2026-05-20 00:00 | 19:48:05.92 | -08:10:13.7 | HIP 97488 | 13.90 |
| 2026-05-20 12:00 | 19:49:02.25 | -08:09:42.3 | HIP 97488 | 7.76 |
| 2026-05-21 00:00 | 19:49:58.53 | -08:09:13.8 | HIP 97488 | 17.79 |
| 2026-05-21 12:00 | 19:50:54.77 | -08:08:48.1 | HIP 97600 | 28.98 |
| 2026-05-22 00:00 | 19:51:50.97 | -08:08:25.4 | HIP 97600 | 36.39 |
| 2026-05-22 12:00 | 19:52:47.14 | -08:08:05.6 | HIP 97966 | 27.90 |
| 2026-05-23 00:00 | 19:53:43.26 | -08:07:48.9 | HIP 97966 | 14.66 |
| 2026-05-23 12:00 | 19:54:39.35 | -08:07:35.4 | HIP 97966 | 6.06 |
| 2026-05-24 00:00 | 19:55:35.40 | -08:07:25.1 | HIP 97966 | 15.58 |
| 2026-05-24 12:00 | 19:56:31.40 | -08:07:18.0 | HIP 98029 | 27.06 |
| 2026-05-25 00:00 | 19:57:27.37 | -08:07:14.3 | HIP 98387 | 29.06 |
| 2026-05-25 12:00 | 19:58:23.30 | -08:07:14.0 | HIP 98387 | 15.27 |
| 2026-05-26 00:00 | 19:59:19.20 | -08:07:17.2 | HIP 98387 | 2.33 |
| 2026-05-26 12:00 | 20:00:15.05 | -08:07:23.9 | HIP 98387 | 12.67 |
| 2026-05-27 00:00 | 20:01:10.87 | -08:07:34.3 | HIP 98387 | 26.41 |
| 2026-05-27 12:00 | 20:02:06.64 | -08:07:48.4 | HIP 98720 | 29.57 |
| 2026-05-28 00:00 | 20:03:02.38 | -08:08:06.2 | HIP 98720 | 26.27 |
| 2026-05-28 12:00 | 20:03:58.08 | -08:08:27.9 | HIP 98930 | 18.90 |
| 2026-05-29 00:00 | 20:04:53.73 | -08:08:53.5 | HIP 98930 | 5.62 |
| 2026-05-29 12:00 | 20:05:49.35 | -08:09:23.1 | HIP 98930 | 9.27 |
| 2026-05-30 00:00 | 20:06:44.92 | -08:09:56.8 | HIP 99094 | 4.73 |
| 2026-05-30 12:00 | 20:07:40.46 | -08:10:34.6 | HIP 99094 | 9.12 |
| 2026-05-31 00:00 | 20:08:35.94 | -08:11:16.7 | HIP 99311 | 19.49 |
| 2026-05-31 12:00 | 20:09:31.39 | -08:12:03.1 | HIP 99311 | 12.82 |
| 2026-06-01 00:00 | 20:10:26.79 | -08:12:53.9 | HIP 99311 | 18.00 |
| 2026-06-01 12:00 | 20:11:22.15 | -08:13:49.2 | HIP 99558 | 15.55 |
| 2026-06-02 00:00 | 20:12:17.45 | -08:14:49.1 | HIP 99558 | 9.30 |