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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
06:43:53.53 |
+28:40:20.3 |
HIP 32225 |
16.58 |
| 2026-06-01 12:00 |
06:44:26.10 |
+28:39:49.9 |
HIP 32279 |
17.73 |
| 2026-06-02 00:00 |
06:44:58.74 |
+28:39:19.3 |
HIP 32279 |
19.13 |
| 2026-06-02 12:00 |
06:45:31.46 |
+28:38:48.3 |
HIP 32311 |
21.91 |
| 2026-06-03 00:00 |
06:46:04.24 |
+28:38:17.0 |
HIP 32311 |
26.40 |
| 2026-06-03 12:00 |
06:46:37.10 |
+28:37:45.4 |
HIP 32311 |
31.91 |
| 2026-06-04 00:00 |
06:47:10.03 |
+28:37:13.4 |
HIP 32700 |
28.77 |
| 2026-06-04 12:00 |
06:47:43.02 |
+28:36:41.1 |
HIP 32700 |
21.55 |
| 2026-06-05 00:00 |
06:48:16.09 |
+28:36:08.5 |
HIP 32700 |
14.35 |
| 2026-06-05 12:00 |
06:48:49.22 |
+28:35:35.5 |
HIP 32700 |
7.29 |
| 2026-06-06 00:00 |
06:49:22.42 |
+28:35:02.2 |
HIP 32700 |
2.62 |
| 2026-06-06 12:00 |
06:49:55.69 |
+28:34:28.6 |
HIP 32700 |
8.23 |
| 2026-06-07 00:00 |
06:50:29.03 |
+28:33:54.6 |
HIP 32700 |
15.37 |
| 2026-06-07 12:00 |
06:51:02.43 |
+28:33:20.3 |
HIP 32700 |
22.66 |
| 2026-06-08 00:00 |
06:51:35.89 |
+28:32:45.7 |
HIP 33053 |
22.16 |
| 2026-06-08 12:00 |
06:52:09.42 |
+28:32:10.7 |
HIP 33053 |
16.30 |
| 2026-06-09 00:00 |
06:52:43.02 |
+28:31:35.4 |
HIP 33053 |
12.20 |
| 2026-06-09 12:00 |
06:53:16.67 |
+28:30:59.7 |
HIP 33129 |
11.65 |
| 2026-06-10 00:00 |
06:53:50.39 |
+28:30:23.7 |
HIP 33129 |
7.28 |
| 2026-06-10 12:00 |
06:54:24.17 |
+28:29:47.3 |
HIP 33129 |
9.01 |
| 2026-06-11 00:00 |
06:54:58.01 |
+28:29:10.6 |
HIP 33129 |
14.85 |
| 2026-06-11 12:00 |
06:55:31.91 |
+28:28:33.5 |
HIP 33364 |
11.16 |
| 2026-06-12 00:00 |
06:56:05.88 |
+28:27:56.1 |
HIP 33364 |
4.13 |
| 2026-06-12 12:00 |
06:56:39.89 |
+28:27:18.3 |
HIP 33364 |
4.68 |
| 2026-06-13 00:00 |
06:57:13.97 |
+28:26:40.2 |
HIP 33364 |
11.82 |
| 2026-06-13 12:00 |
06:57:48.10 |
+28:26:01.7 |
HIP 33364 |
19.26 |
| 2026-06-14 00:00 |
06:58:22.29 |
+28:25:22.9 |
HIP 33662 |
18.36 |
| 2026-06-14 12:00 |
06:58:56.54 |
+28:24:43.7 |
HIP 33662 |
11.90 |
| 2026-06-15 00:00 |
06:59:30.84 |
+28:24:04.1 |
HIP 33662 |
7.78 |
| 2026-06-15 12:00 |
07:00:05.19 |
+28:23:24.2 |
HIP 33662 |
9.71 |
| 2026-06-16 00:00 |
07:00:39.59 |
+28:22:44.0 |
HIP 33662 |
15.61 |
| 2026-06-16 12:00 |
07:01:14.05 |
+28:22:03.4 |
HIP 33662 |
22.56 |
| 2026-06-17 00:00 |
07:01:48.56 |
+28:21:22.4 |
HIP 33662 |
29.84 |
| 2026-06-17 12:00 |
07:02:23.11 |
+28:20:41.1 |
HIP 33923 |
34.22 |
| 2026-06-18 00:00 |
07:02:57.72 |
+28:19:59.4 |
HIP 33923 |
35.83 |
| 2026-06-18 12:00 |
07:03:32.37 |
+28:19:17.4 |
HIP 34264 |
35.74 |
| 2026-06-19 00:00 |
07:04:07.07 |
+28:18:35.0 |
HIP 34264 |
28.15 |
| 2026-06-19 12:00 |
07:04:41.82 |
+28:17:52.3 |
HIP 34264 |
20.60 |
| 2026-06-20 00:00 |
07:05:16.61 |
+28:17:09.2 |
HIP 34264 |
13.20 |
| 2026-06-20 12:00 |
07:05:51.45 |
+28:16:25.7 |
HIP 34264 |
6.50 |
| 2026-06-21 00:00 |
07:06:26.33 |
+28:15:41.9 |
HIP 34304 |
4.97 |
| 2026-06-21 12:00 |
07:07:01.26 |
+28:14:57.7 |
HIP 34304 |
4.15 |
| 2026-06-22 00:00 |
07:07:36.23 |
+28:14:13.2 |
HIP 34367 |
4.40 |