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
$$
M_a = (9.896 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.896 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.854 |
| k |
0.800 |
| δ90 |
9.999 |
| 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) |
| 2026-07-29 00:00 |
09:37:20.30 |
+34:02:36.3 |
HIP 47132 |
13.51 |
| 2026-07-29 12:00 |
09:37:24.77 |
+34:02:11.9 |
HIP 47132 |
14.39 |
| 2026-07-30 00:00 |
09:37:29.26 |
+34:01:47.5 |
HIP 47132 |
15.30 |
| 2026-07-30 12:00 |
09:37:33.76 |
+34:01:23.4 |
HIP 47132 |
16.21 |
| 2026-07-31 00:00 |
09:37:38.27 |
+34:00:59.3 |
HIP 47132 |
17.14 |
| 2026-07-31 12:00 |
09:37:42.79 |
+34:00:35.5 |
HIP 47132 |
18.09 |
| 2026-08-01 00:00 |
09:37:47.32 |
+34:00:11.7 |
HIP 47132 |
19.04 |
| 2026-08-01 12:00 |
09:37:51.86 |
+33:59:48.1 |
HIP 47132 |
20.00 |
| 2026-08-02 00:00 |
09:37:56.41 |
+33:59:24.7 |
HIP 47132 |
20.97 |
| 2026-08-02 12:00 |
09:38:00.96 |
+33:59:01.4 |
HIP 47132 |
21.94 |
| 2026-08-03 00:00 |
09:38:05.53 |
+33:58:38.3 |
HIP 47132 |
22.92 |
| 2026-08-03 12:00 |
09:38:10.10 |
+33:58:15.4 |
HIP 47132 |
23.91 |
| 2026-08-04 00:00 |
09:38:14.68 |
+33:57:52.6 |
HIP 47132 |
24.90 |
| 2026-08-04 12:00 |
09:38:19.27 |
+33:57:29.9 |
HIP 47132 |
25.89 |
| 2026-08-05 00:00 |
09:38:23.86 |
+33:57:07.5 |
HIP 47132 |
26.89 |
| 2026-08-05 12:00 |
09:38:28.46 |
+33:56:45.1 |
HIP 47132 |
27.89 |
| 2026-08-06 00:00 |
09:38:33.07 |
+33:56:23.0 |
HIP 47132 |
28.89 |
| 2026-08-06 12:00 |
09:38:37.68 |
+33:56:01.0 |
HIP 47132 |
29.89 |
| 2026-08-07 00:00 |
09:38:42.30 |
+33:55:39.2 |
HIP 47132 |
30.90 |
| 2026-08-07 12:00 |
09:38:46.92 |
+33:55:17.6 |
HIP 47132 |
31.91 |
| 2026-08-08 00:00 |
09:38:51.55 |
+33:54:56.1 |
HIP 47132 |
32.92 |
| 2026-08-08 12:00 |
09:38:56.18 |
+33:54:34.8 |
HIP 47132 |
33.93 |
| 2026-08-09 00:00 |
09:39:00.82 |
+33:54:13.7 |
HIP 47132 |
34.94 |
| 2026-08-09 12:00 |
09:39:05.46 |
+33:53:52.7 |
HIP 47132 |
35.95 |
| 2026-08-10 00:00 |
09:39:10.11 |
+33:53:32.0 |
HIP 47132 |
36.97 |
| 2026-08-10 12:00 |
09:39:14.75 |
+33:53:11.4 |
HIP 47132 |
37.98 |
| 2026-08-11 00:00 |
09:39:19.41 |
+33:52:51.0 |
HIP 47132 |
39.00 |
| 2026-08-11 12:00 |
09:39:24.06 |
+33:52:30.8 |
HIP 47132 |
40.02 |
| 2026-08-12 00:00 |
09:39:28.71 |
+33:52:10.8 |
HIP 47579 |
40.22 |
| 2026-08-12 12:00 |
09:39:33.37 |
+33:51:50.9 |
HIP 47579 |
39.64 |
| 2026-08-13 00:00 |
09:39:38.03 |
+33:51:31.3 |
HIP 47579 |
39.08 |
| 2026-08-13 12:00 |
09:39:42.69 |
+33:51:11.8 |
HIP 47579 |
38.54 |
| 2026-08-14 00:00 |
09:39:47.35 |
+33:50:52.5 |
HIP 47579 |
38.02 |
| 2026-08-14 12:00 |
09:39:52.01 |
+33:50:33.5 |
HIP 47579 |
37.51 |
| 2026-08-15 00:00 |
09:39:56.67 |
+33:50:14.6 |
HIP 47579 |
37.02 |
| 2026-08-15 12:00 |
09:40:01.33 |
+33:49:55.9 |
HIP 47579 |
36.56 |
| 2026-08-16 00:00 |
09:40:05.99 |
+33:49:37.4 |
HIP 47579 |
36.11 |
| 2026-08-16 12:00 |
09:40:10.64 |
+33:49:19.1 |
HIP 47579 |
35.68 |
| 2026-08-17 00:00 |
09:40:15.30 |
+33:49:01.1 |
HIP 47579 |
35.28 |
| 2026-08-17 12:00 |
09:40:19.95 |
+33:48:43.2 |
HIP 47579 |
34.89 |
| 2026-08-18 00:00 |
09:40:24.60 |
+33:48:25.5 |
HIP 47579 |
34.53 |
| 2026-08-18 12:00 |
09:40:29.25 |
+33:48:08.0 |
HIP 47579 |
34.19 |
| 2026-08-19 00:00 |
09:40:33.90 |
+33:47:50.8 |
HIP 47579 |
33.88 |