C/2014 M1 (PANSTARRS)
メタデータ
| 項目 |
値 |
| Designation |
C/2014 M1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2015-08-26T12:23:10.953600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:56Z |
| Obs used |
86 |
| NEO |
- |
| M1 |
7.200 |
| K1 |
12.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2015-06-02.0000000 |
| e |
1.00235797 |
| q (au) |
5.576695 |
| a (au) |
-2365.040406 |
| i (deg) |
160.176838 |
| Ω (om, deg) |
234.673281 |
| ω (w, deg) |
336.742114 |
| M (ma, deg) |
-0.000733 |
等級
散乱 + 全体線形
$$
M_a = (9.895 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.895 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.854 |
| k |
0.800 |
| δ90 |
9.936 |
| 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) |
| 2026-02-03 00:00 |
09:47:47.96 |
+35:04:27.6 |
HIP 47997 |
12.73 |
| 2026-02-03 12:00 |
09:47:40.75 |
+35:05:02.2 |
HIP 47997 |
11.28 |
| 2026-02-04 00:00 |
09:47:33.53 |
+35:05:36.6 |
HIP 47997 |
9.86 |
| 2026-02-04 12:00 |
09:47:26.30 |
+35:06:10.7 |
HIP 47997 |
8.51 |
| 2026-02-05 00:00 |
09:47:19.06 |
+35:06:44.6 |
HIP 47997 |
7.25 |
| 2026-02-05 12:00 |
09:47:11.81 |
+35:07:18.2 |
HIP 47997 |
6.16 |
| 2026-02-06 00:00 |
09:47:04.55 |
+35:07:51.6 |
HIP 47997 |
5.31 |
| 2026-02-06 12:00 |
09:46:57.28 |
+35:08:24.6 |
HIP 47997 |
4.86 |
| 2026-02-07 00:00 |
09:46:50.01 |
+35:08:57.5 |
HIP 47997 |
4.91 |
| 2026-02-07 12:00 |
09:46:42.73 |
+35:09:30.0 |
HIP 47997 |
5.44 |
| 2026-02-08 00:00 |
09:46:35.45 |
+35:10:02.2 |
HIP 47997 |
6.34 |
| 2026-02-08 12:00 |
09:46:28.16 |
+35:10:34.2 |
HIP 47997 |
7.47 |
| 2026-02-09 00:00 |
09:46:20.86 |
+35:11:05.9 |
HIP 47997 |
8.74 |
| 2026-02-09 12:00 |
09:46:13.56 |
+35:11:37.3 |
HIP 47997 |
10.11 |
| 2026-02-10 00:00 |
09:46:06.26 |
+35:12:08.5 |
HIP 47997 |
11.53 |
| 2026-02-10 12:00 |
09:45:58.95 |
+35:12:39.3 |
HIP 47997 |
12.98 |
| 2026-02-11 00:00 |
09:45:51.64 |
+35:13:09.9 |
HIP 47997 |
14.47 |
| 2026-02-11 12:00 |
09:45:44.33 |
+35:13:40.1 |
HIP 47997 |
15.97 |
| 2026-02-12 00:00 |
09:45:37.01 |
+35:14:10.1 |
HIP 47997 |
17.48 |
| 2026-02-12 12:00 |
09:45:29.70 |
+35:14:39.8 |
HIP 47806 |
18.75 |
| 2026-02-13 00:00 |
09:45:22.38 |
+35:15:09.1 |
HIP 47806 |
18.52 |
| 2026-02-13 12:00 |
09:45:15.07 |
+35:15:38.2 |
HIP 47806 |
18.41 |
| 2026-02-14 00:00 |
09:45:07.76 |
+35:16:06.9 |
HIP 47806 |
18.44 |
| 2026-02-14 12:00 |
09:45:00.45 |
+35:16:35.4 |
HIP 47806 |
18.59 |
| 2026-02-15 00:00 |
09:44:53.14 |
+35:17:03.5 |
HIP 47806 |
18.86 |
| 2026-02-15 12:00 |
09:44:45.83 |
+35:17:31.4 |
HIP 47806 |
19.25 |
| 2026-02-16 00:00 |
09:44:38.53 |
+35:17:58.9 |
HIP 47806 |
19.76 |
| 2026-02-16 12:00 |
09:44:31.23 |
+35:18:26.1 |
HIP 47806 |
20.37 |
| 2026-02-17 00:00 |
09:44:23.93 |
+35:18:53.0 |
HIP 47806 |
21.07 |
| 2026-02-17 12:00 |
09:44:16.64 |
+35:19:19.5 |
HIP 47806 |
21.85 |
| 2026-02-18 00:00 |
09:44:09.36 |
+35:19:45.8 |
HIP 47631 |
22.65 |
| 2026-02-18 12:00 |
09:44:02.08 |
+35:20:11.7 |
HIP 47631 |
21.80 |
| 2026-02-19 00:00 |
09:43:54.81 |
+35:20:37.3 |
HIP 47631 |
21.02 |
| 2026-02-19 12:00 |
09:43:47.55 |
+35:21:02.6 |
HIP 47631 |
20.33 |
| 2026-02-20 00:00 |
09:43:40.30 |
+35:21:27.5 |
HIP 47631 |
19.73 |
| 2026-02-20 12:00 |
09:43:33.05 |
+35:21:52.1 |
HIP 47631 |
19.23 |
| 2026-02-21 00:00 |
09:43:25.82 |
+35:22:16.4 |
HIP 47575 |
18.05 |
| 2026-02-21 12:00 |
09:43:18.59 |
+35:22:40.3 |
HIP 47575 |
16.52 |
| 2026-02-22 00:00 |
09:43:11.38 |
+35:23:03.9 |
HIP 47575 |
15.01 |
| 2026-02-22 12:00 |
09:43:04.18 |
+35:23:27.2 |
HIP 47575 |
13.49 |
| 2026-02-23 00:00 |
09:42:56.98 |
+35:23:50.1 |
HIP 47575 |
11.99 |
| 2026-02-23 12:00 |
09:42:49.80 |
+35:24:12.7 |
HIP 47575 |
10.49 |
| 2026-02-24 00:00 |
09:42:42.64 |
+35:24:35.0 |
HIP 47575 |
9.00 |