メタデータ
| 項目 |
値 |
| Designation |
P/2015 C1 (TOTAS-Gibbs) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-05-01T06:59:29.762880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:06Z |
| Obs used |
290 |
| NEO |
- |
| M1 |
12.800 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2015-03-12.0000000 |
| e |
0.56245006 |
| q (au) |
2.892675 |
| a (au) |
6.611073 |
| i (deg) |
13.877560 |
| Ω (om, deg) |
348.862081 |
| ω (w, deg) |
178.414934 |
| M (ma, deg) |
357.083989 |
等級
散乱 + 全体線形
$$
M_a = (11.583 + 4.475\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.583 |
| n |
4.475 |
| gf |
1.000 |
| gb |
-0.940 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
00:31:04.86 |
+09:20:59.0 |
HIP 2441 |
2.66 |
| 2026-09-20 12:00 |
00:30:54.55 |
+09:20:09.8 |
HIP 2441 |
2.95 |
| 2026-09-21 00:00 |
00:30:44.22 |
+09:19:20.2 |
HIP 2441 |
4.96 |
| 2026-09-21 12:00 |
00:30:33.86 |
+09:18:30.2 |
HIP 2441 |
7.42 |
| 2026-09-22 00:00 |
00:30:23.47 |
+09:17:39.9 |
HIP 2441 |
10.00 |
| 2026-09-22 12:00 |
00:30:13.06 |
+09:16:49.3 |
HIP 2441 |
12.64 |
| 2026-09-23 00:00 |
00:30:02.63 |
+09:15:58.2 |
HIP 2441 |
15.30 |
| 2026-09-23 12:00 |
00:29:52.18 |
+09:15:06.9 |
HIP 2441 |
17.99 |
| 2026-09-24 00:00 |
00:29:41.71 |
+09:14:15.2 |
HIP 2441 |
20.69 |
| 2026-09-24 12:00 |
00:29:31.22 |
+09:13:23.2 |
HIP 2441 |
23.40 |
| 2026-09-25 00:00 |
00:29:20.71 |
+09:12:30.8 |
HIP 2340 |
25.51 |
| 2026-09-25 12:00 |
00:29:10.18 |
+09:11:38.2 |
HIP 2340 |
25.67 |
| 2026-09-26 00:00 |
00:28:59.64 |
+09:10:45.2 |
HIP 2340 |
26.12 |
| 2026-09-26 12:00 |
00:28:49.08 |
+09:09:52.0 |
HIP 2154 |
23.73 |
| 2026-09-27 00:00 |
00:28:38.51 |
+09:08:58.4 |
HIP 2154 |
21.13 |
| 2026-09-27 12:00 |
00:28:27.93 |
+09:08:04.6 |
HIP 2154 |
18.57 |
| 2026-09-28 00:00 |
00:28:17.34 |
+09:07:10.5 |
HIP 2154 |
16.07 |
| 2026-09-28 12:00 |
00:28:06.74 |
+09:06:16.1 |
HIP 2154 |
13.68 |
| 2026-09-29 00:00 |
00:27:56.13 |
+09:05:21.4 |
HIP 2154 |
11.46 |
| 2026-09-29 12:00 |
00:27:45.51 |
+09:04:26.5 |
HIP 2154 |
9.53 |
| 2026-09-30 00:00 |
00:27:34.89 |
+09:03:31.3 |
HIP 2154 |
8.11 |
| 2026-09-30 12:00 |
00:27:24.26 |
+09:02:35.9 |
HIP 2154 |
7.50 |
| 2026-10-01 00:00 |
00:27:13.63 |
+09:01:40.2 |
HIP 2154 |
7.88 |
| 2026-10-01 12:00 |
00:27:02.99 |
+09:00:44.3 |
HIP 2154 |
9.15 |
| 2026-10-02 00:00 |
00:26:52.36 |
+08:59:48.2 |
HIP 2154 |
10.99 |
| 2026-10-02 12:00 |
00:26:41.72 |
+08:58:51.8 |
HIP 2154 |
13.18 |
| 2026-10-03 00:00 |
00:26:31.09 |
+08:57:55.3 |
HIP 2154 |
15.56 |
| 2026-10-03 12:00 |
00:26:20.46 |
+08:56:58.5 |
HIP 1998 |
16.73 |
| 2026-10-04 00:00 |
00:26:09.83 |
+08:56:01.6 |
HIP 1998 |
14.89 |
| 2026-10-04 12:00 |
00:25:59.20 |
+08:55:04.4 |
HIP 1998 |
13.39 |
| 2026-10-05 00:00 |
00:25:48.59 |
+08:54:07.1 |
HIP 1998 |
12.34 |
| 2026-10-05 12:00 |
00:25:37.98 |
+08:53:09.6 |
HIP 1998 |
11.87 |
| 2026-10-06 00:00 |
00:25:27.38 |
+08:52:12.0 |
HIP 1998 |
12.06 |
| 2026-10-06 12:00 |
00:25:16.79 |
+08:51:14.2 |
HIP 1998 |
12.86 |
| 2026-10-07 00:00 |
00:25:06.22 |
+08:50:16.2 |
HIP 1998 |
14.17 |
| 2026-10-07 12:00 |
00:24:55.65 |
+08:49:18.1 |
HIP 1998 |
15.87 |
| 2026-10-08 00:00 |
00:24:45.10 |
+08:48:19.9 |
HIP 1998 |
17.85 |
| 2026-10-08 12:00 |
00:24:34.57 |
+08:47:21.5 |
HIP 1998 |
20.02 |
| 2026-10-09 00:00 |
00:24:24.05 |
+08:46:23.1 |
HIP 1816 |
20.70 |
| 2026-10-09 12:00 |
00:24:13.55 |
+08:45:24.5 |
HIP 1816 |
18.02 |
| 2026-10-10 00:00 |
00:24:03.07 |
+08:44:25.9 |
HIP 1816 |
15.38 |
| 2026-10-10 12:00 |
00:23:52.62 |
+08:43:27.1 |
HIP 1816 |
12.79 |
| 2026-10-11 00:00 |
00:23:42.18 |
+08:42:28.3 |
HIP 1816 |
10.31 |