メタデータ
| 項目 |
値 |
| Designation |
9P/Tempel 1 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-08-02T13:41:50.605440Z |
| Orbit solution date (soln_date, UTC) |
2025-12-29T09:30:51Z |
| Obs used |
3283 |
| NEO |
- |
| M1 |
12.900 |
| K1 |
9.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2016-03-23.0000000 |
| e |
0.50970283 |
| q (au) |
1.542540 |
| a (au) |
3.146134 |
| i (deg) |
10.473428 |
| Ω (om, deg) |
68.753575 |
| ω (w, deg) |
179.197275 |
| M (ma, deg) |
336.585444 |
等級
散乱 + 全体線形
$$
M_a = (17.220 + 2.445\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.220 |
| n |
2.445 |
| gf |
0.827 |
| gb |
-0.761 |
| k |
0.841 |
| δ90 |
2.893 |
| 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
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) |
| 2026-07-29 00:00 |
07:51:59.26 |
+27:03:05.5 |
HIP 38538 |
26.48 |
| 2026-07-29 12:00 |
07:52:35.68 |
+27:01:55.8 |
HIP 38538 |
20.03 |
| 2026-07-30 00:00 |
07:53:12.09 |
+27:00:45.8 |
HIP 38538 |
15.33 |
| 2026-07-30 12:00 |
07:53:48.50 |
+26:59:35.5 |
HIP 38538 |
14.26 |
| 2026-07-31 00:00 |
07:54:24.91 |
+26:58:25.0 |
HIP 38679 |
11.63 |
| 2026-07-31 12:00 |
07:55:01.31 |
+26:57:14.2 |
HIP 38679 |
7.72 |
| 2026-08-01 00:00 |
07:55:37.71 |
+26:56:03.2 |
HIP 38679 |
10.87 |
| 2026-08-01 12:00 |
07:56:14.10 |
+26:54:51.9 |
HIP 38679 |
17.64 |
| 2026-08-02 00:00 |
07:56:50.48 |
+26:53:40.3 |
HIP 38679 |
25.27 |
| 2026-08-02 12:00 |
07:57:26.86 |
+26:52:28.5 |
HIP 38679 |
33.17 |
| 2026-08-03 00:00 |
07:58:03.23 |
+26:51:16.4 |
HIP 38903 |
38.33 |
| 2026-08-03 12:00 |
07:58:39.59 |
+26:50:04.1 |
HIP 38903 |
41.29 |
| 2026-08-04 00:00 |
07:59:15.95 |
+26:48:51.5 |
HIP 39303 |
38.89 |
| 2026-08-04 12:00 |
07:59:52.30 |
+26:47:38.6 |
HIP 39303 |
31.05 |
| 2026-08-05 00:00 |
08:00:28.63 |
+26:46:25.6 |
HIP 39303 |
23.47 |
| 2026-08-05 12:00 |
08:01:04.96 |
+26:45:12.2 |
HIP 39306 |
16.31 |
| 2026-08-06 00:00 |
08:01:41.28 |
+26:43:58.7 |
HIP 39306 |
8.77 |
| 2026-08-06 12:00 |
08:02:17.59 |
+26:42:44.9 |
HIP 39306 |
4.70 |
| 2026-08-07 00:00 |
08:02:53.88 |
+26:41:30.9 |
HIP 39306 |
10.09 |
| 2026-08-07 12:00 |
08:03:30.16 |
+26:40:16.6 |
HIP 39306 |
17.78 |
| 2026-08-08 00:00 |
08:04:06.44 |
+26:39:02.2 |
HIP 39401 |
25.36 |
| 2026-08-08 12:00 |
08:04:42.69 |
+26:37:47.5 |
HIP 39401 |
28.77 |
| 2026-08-09 00:00 |
08:05:18.94 |
+26:36:32.6 |
HIP 39603 |
29.78 |
| 2026-08-09 12:00 |
08:05:55.16 |
+26:35:17.5 |
HIP 39603 |
28.73 |
| 2026-08-10 00:00 |
08:06:31.38 |
+26:34:02.2 |
HIP 39603 |
29.98 |
| 2026-08-10 12:00 |
08:07:07.57 |
+26:32:46.6 |
HIP 39777 |
29.18 |
| 2026-08-11 00:00 |
08:07:43.75 |
+26:31:30.9 |
HIP 39777 |
29.28 |
| 2026-08-11 12:00 |
08:08:19.91 |
+26:30:15.0 |
HIP 39777 |
31.58 |
| 2026-08-12 00:00 |
08:08:56.06 |
+26:28:58.9 |
HIP 39909 |
32.82 |
| 2026-08-12 12:00 |
08:09:32.18 |
+26:27:42.6 |
HIP 39909 |
34.63 |
| 2026-08-13 00:00 |
08:10:08.28 |
+26:26:26.1 |
HIP 40007 |
35.78 |
| 2026-08-13 12:00 |
08:10:44.37 |
+26:25:09.5 |
HIP 40200 |
28.33 |
| 2026-08-14 00:00 |
08:11:20.43 |
+26:23:52.7 |
HIP 40200 |
20.56 |
| 2026-08-14 12:00 |
08:11:56.47 |
+26:22:35.7 |
HIP 40200 |
13.29 |
| 2026-08-15 00:00 |
08:12:32.48 |
+26:21:18.5 |
HIP 40200 |
8.01 |
| 2026-08-15 12:00 |
08:13:08.48 |
+26:20:01.2 |
HIP 40200 |
9.24 |
| 2026-08-16 00:00 |
08:13:44.45 |
+26:18:43.8 |
HIP 40200 |
15.49 |
| 2026-08-16 12:00 |
08:14:20.39 |
+26:17:26.2 |
HIP 40200 |
22.97 |
| 2026-08-17 00:00 |
08:14:56.31 |
+26:16:08.4 |
HIP 40378 |
27.93 |
| 2026-08-17 12:00 |
08:15:32.20 |
+26:14:50.5 |
HIP 40378 |
31.29 |
| 2026-08-18 00:00 |
08:16:08.06 |
+26:13:32.5 |
HIP 40667 |
29.12 |
| 2026-08-18 12:00 |
08:16:43.90 |
+26:12:14.3 |
HIP 40667 |
22.78 |
| 2026-08-19 00:00 |
08:17:19.71 |
+26:10:56.0 |
HIP 40667 |
17.95 |