メタデータ
| 項目 |
値 |
| Designation |
C/1988 C1 (Maury-Phinney) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1987-12-26T18:57:18.650880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:36Z |
| Obs used |
17 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1988-03-16.0000000 |
| e |
1.00000053 |
| q (au) |
1.930675 |
| a (au) |
-3647207.470365 |
| i (deg) |
93.158683 |
| Ω (om, deg) |
147.519927 |
| ω (w, deg) |
346.839485 |
| M (ma, deg) |
0.000000 |
等級
散乱 + 全体線形
$$
M_a = (13.701 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.701 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.571 |
| k |
0.800 |
| 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 |
21:17:22.35 |
+19:51:07.0 |
HIP 105124 |
10.30 |
| 2026-09-20 12:00 |
21:17:20.91 |
+19:50:49.9 |
HIP 105124 |
10.70 |
| 2026-09-21 00:00 |
21:17:19.48 |
+19:50:32.7 |
HIP 105124 |
11.11 |
| 2026-09-21 12:00 |
21:17:18.07 |
+19:50:15.5 |
HIP 105124 |
11.52 |
| 2026-09-22 00:00 |
21:17:16.66 |
+19:49:58.2 |
HIP 105124 |
11.93 |
| 2026-09-22 12:00 |
21:17:15.27 |
+19:49:40.8 |
HIP 105124 |
12.35 |
| 2026-09-23 00:00 |
21:17:13.89 |
+19:49:23.3 |
HIP 105124 |
12.76 |
| 2026-09-23 12:00 |
21:17:12.52 |
+19:49:05.8 |
HIP 105124 |
13.18 |
| 2026-09-24 00:00 |
21:17:11.16 |
+19:48:48.2 |
HIP 105124 |
13.60 |
| 2026-09-24 12:00 |
21:17:09.81 |
+19:48:30.6 |
HIP 105124 |
14.01 |
| 2026-09-25 00:00 |
21:17:08.48 |
+19:48:12.9 |
HIP 105124 |
14.43 |
| 2026-09-25 12:00 |
21:17:07.16 |
+19:47:55.2 |
HIP 105124 |
14.85 |
| 2026-09-26 00:00 |
21:17:05.85 |
+19:47:37.4 |
HIP 105124 |
15.26 |
| 2026-09-26 12:00 |
21:17:04.55 |
+19:47:19.6 |
HIP 105124 |
15.68 |
| 2026-09-27 00:00 |
21:17:03.26 |
+19:47:01.7 |
HIP 105124 |
16.10 |
| 2026-09-27 12:00 |
21:17:01.99 |
+19:46:43.7 |
HIP 105124 |
16.51 |
| 2026-09-28 00:00 |
21:17:00.73 |
+19:46:25.7 |
HIP 104990 |
16.56 |
| 2026-09-28 12:00 |
21:16:59.48 |
+19:46:07.7 |
HIP 104990 |
16.21 |
| 2026-09-29 00:00 |
21:16:58.24 |
+19:45:49.6 |
HIP 104990 |
15.87 |
| 2026-09-29 12:00 |
21:16:57.02 |
+19:45:31.4 |
HIP 104990 |
15.53 |
| 2026-09-30 00:00 |
21:16:55.81 |
+19:45:13.2 |
HIP 104990 |
15.20 |
| 2026-09-30 12:00 |
21:16:54.61 |
+19:44:55.0 |
HIP 104990 |
14.87 |
| 2026-10-01 00:00 |
21:16:53.42 |
+19:44:36.7 |
HIP 104990 |
14.56 |
| 2026-10-01 12:00 |
21:16:52.25 |
+19:44:18.4 |
HIP 104990 |
14.25 |
| 2026-10-02 00:00 |
21:16:51.09 |
+19:44:00.0 |
HIP 104990 |
13.95 |
| 2026-10-02 12:00 |
21:16:49.95 |
+19:43:41.6 |
HIP 104990 |
13.66 |
| 2026-10-03 00:00 |
21:16:48.82 |
+19:43:23.2 |
HIP 104990 |
13.38 |
| 2026-10-03 12:00 |
21:16:47.70 |
+19:43:04.7 |
HIP 104990 |
13.11 |
| 2026-10-04 00:00 |
21:16:46.59 |
+19:42:46.2 |
HIP 104990 |
12.85 |
| 2026-10-04 12:00 |
21:16:45.50 |
+19:42:27.7 |
HIP 104990 |
12.60 |
| 2026-10-05 00:00 |
21:16:44.42 |
+19:42:09.1 |
HIP 104990 |
12.36 |
| 2026-10-05 12:00 |
21:16:43.36 |
+19:41:50.5 |
HIP 104990 |
12.13 |
| 2026-10-06 00:00 |
21:16:42.31 |
+19:41:31.9 |
HIP 104990 |
11.91 |
| 2026-10-06 12:00 |
21:16:41.28 |
+19:41:13.2 |
HIP 104990 |
11.71 |
| 2026-10-07 00:00 |
21:16:40.25 |
+19:40:54.5 |
HIP 104990 |
11.52 |
| 2026-10-07 12:00 |
21:16:39.25 |
+19:40:35.8 |
HIP 104990 |
11.35 |
| 2026-10-08 00:00 |
21:16:38.25 |
+19:40:17.1 |
HIP 104990 |
11.18 |
| 2026-10-08 12:00 |
21:16:37.27 |
+19:39:58.3 |
HIP 104990 |
11.04 |
| 2026-10-09 00:00 |
21:16:36.31 |
+19:39:39.5 |
HIP 104990 |
10.91 |
| 2026-10-09 12:00 |
21:16:35.36 |
+19:39:20.7 |
HIP 104990 |
10.79 |
| 2026-10-10 00:00 |
21:16:34.43 |
+19:39:01.9 |
HIP 104990 |
10.69 |
| 2026-10-10 12:00 |
21:16:33.51 |
+19:38:43.1 |
HIP 104990 |
10.61 |
| 2026-10-11 00:00 |
21:16:32.60 |
+19:38:24.2 |
HIP 104990 |
10.54 |