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) |
| 2026-07-29 00:00 |
21:20:31.33 |
+20:11:25.4 |
HIP 105517 |
26.73 |
| 2026-07-29 12:00 |
21:20:29.47 |
+20:11:20.9 |
HIP 105517 |
27.10 |
| 2026-07-30 00:00 |
21:20:27.60 |
+20:11:16.2 |
HIP 105517 |
27.48 |
| 2026-07-30 12:00 |
21:20:25.73 |
+20:11:11.4 |
HIP 105517 |
27.86 |
| 2026-07-31 00:00 |
21:20:23.86 |
+20:11:06.5 |
HIP 105517 |
28.24 |
| 2026-07-31 12:00 |
21:20:21.98 |
+20:11:01.4 |
HIP 105517 |
28.62 |
| 2026-08-01 00:00 |
21:20:20.10 |
+20:10:56.1 |
HIP 105517 |
29.00 |
| 2026-08-01 12:00 |
21:20:18.22 |
+20:10:50.7 |
HIP 105517 |
29.39 |
| 2026-08-02 00:00 |
21:20:16.33 |
+20:10:45.2 |
HIP 105517 |
29.77 |
| 2026-08-02 12:00 |
21:20:14.44 |
+20:10:39.5 |
HIP 105517 |
30.16 |
| 2026-08-03 00:00 |
21:20:12.55 |
+20:10:33.6 |
HIP 105517 |
30.55 |
| 2026-08-03 12:00 |
21:20:10.66 |
+20:10:27.6 |
HIP 105517 |
30.94 |
| 2026-08-04 00:00 |
21:20:08.77 |
+20:10:21.5 |
HIP 105517 |
31.34 |
| 2026-08-04 12:00 |
21:20:06.87 |
+20:10:15.2 |
HIP 105517 |
31.73 |
| 2026-08-05 00:00 |
21:20:04.98 |
+20:10:08.7 |
HIP 105517 |
32.13 |
| 2026-08-05 12:00 |
21:20:03.08 |
+20:10:02.1 |
HIP 105517 |
32.52 |
| 2026-08-06 00:00 |
21:20:01.18 |
+20:09:55.4 |
HIP 105517 |
32.92 |
| 2026-08-06 12:00 |
21:19:59.27 |
+20:09:48.5 |
HIP 105517 |
33.32 |
| 2026-08-07 00:00 |
21:19:57.37 |
+20:09:41.5 |
HIP 105124 |
33.22 |
| 2026-08-07 12:00 |
21:19:55.47 |
+20:09:34.3 |
HIP 105124 |
32.76 |
| 2026-08-08 00:00 |
21:19:53.56 |
+20:09:27.0 |
HIP 105124 |
32.29 |
| 2026-08-08 12:00 |
21:19:51.66 |
+20:09:19.5 |
HIP 105124 |
31.83 |
| 2026-08-09 00:00 |
21:19:49.75 |
+20:09:11.9 |
HIP 105124 |
31.36 |
| 2026-08-09 12:00 |
21:19:47.84 |
+20:09:04.2 |
HIP 105124 |
30.90 |
| 2026-08-10 00:00 |
21:19:45.94 |
+20:08:56.3 |
HIP 105124 |
30.43 |
| 2026-08-10 12:00 |
21:19:44.03 |
+20:08:48.2 |
HIP 105124 |
29.97 |
| 2026-08-11 00:00 |
21:19:42.12 |
+20:08:40.0 |
HIP 105124 |
29.50 |
| 2026-08-11 12:00 |
21:19:40.22 |
+20:08:31.7 |
HIP 105124 |
29.03 |
| 2026-08-12 00:00 |
21:19:38.31 |
+20:08:23.2 |
HIP 105124 |
28.56 |
| 2026-08-12 12:00 |
21:19:36.40 |
+20:08:14.6 |
HIP 105124 |
28.09 |
| 2026-08-13 00:00 |
21:19:34.50 |
+20:08:05.9 |
HIP 105124 |
27.62 |
| 2026-08-13 12:00 |
21:19:32.59 |
+20:07:57.0 |
HIP 105124 |
27.15 |
| 2026-08-14 00:00 |
21:19:30.69 |
+20:07:47.9 |
HIP 105124 |
26.68 |
| 2026-08-14 12:00 |
21:19:28.79 |
+20:07:38.8 |
HIP 105124 |
26.21 |
| 2026-08-15 00:00 |
21:19:26.89 |
+20:07:29.4 |
HIP 105124 |
25.73 |
| 2026-08-15 12:00 |
21:19:24.99 |
+20:07:20.0 |
HIP 105124 |
25.26 |
| 2026-08-16 00:00 |
21:19:23.09 |
+20:07:10.4 |
HIP 105124 |
24.79 |
| 2026-08-16 12:00 |
21:19:21.19 |
+20:07:00.7 |
HIP 105124 |
24.32 |
| 2026-08-17 00:00 |
21:19:19.30 |
+20:06:50.8 |
HIP 105124 |
23.85 |
| 2026-08-17 12:00 |
21:19:17.40 |
+20:06:40.8 |
HIP 105124 |
23.37 |
| 2026-08-18 00:00 |
21:19:15.51 |
+20:06:30.7 |
HIP 105124 |
22.90 |
| 2026-08-18 12:00 |
21:19:13.62 |
+20:06:20.4 |
HIP 105124 |
22.43 |
| 2026-08-19 00:00 |
21:19:11.74 |
+20:06:10.0 |
HIP 105124 |
21.95 |