P/2022 C3 (PANSTARRS)
メタデータ
| 項目 |
値 |
| Designation |
P/2022 C3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-07-01T06:38:07.016640Z |
| Orbit solution date (soln_date, UTC) |
2023-10-29T03:13:09Z |
| Obs used |
123 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
15.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-02-09T14:55:00.796800Z |
| Discovery magnitude (MPC) |
20.92 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2022-04-23.0000000 |
| e |
0.54695784 |
| q (au) |
4.374506 |
| a (au) |
9.655848 |
| i (deg) |
12.815871 |
| Ω (om, deg) |
139.060787 |
| ω (w, deg) |
93.942616 |
| M (ma, deg) |
357.724357 |
等級
散乱 + 全体線形
$$
M_a = (6.867 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.867 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.864 |
| k |
0.999 |
| 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) |
| 2026-02-03 00:00 |
22:43:01.40 |
-12:42:33.3 |
HIP 112111 |
11.45 |
| 2026-02-03 12:00 |
22:43:17.17 |
-12:41:07.7 |
HIP 112238 |
11.19 |
| 2026-02-04 00:00 |
22:43:32.97 |
-12:39:42.0 |
HIP 112238 |
7.48 |
| 2026-02-04 12:00 |
22:43:48.79 |
-12:38:16.1 |
HIP 112238 |
4.53 |
| 2026-02-05 00:00 |
22:44:04.63 |
-12:36:50.2 |
HIP 112238 |
4.35 |
| 2026-02-05 12:00 |
22:44:20.50 |
-12:35:24.2 |
HIP 112238 |
7.17 |
| 2026-02-06 00:00 |
22:44:36.40 |
-12:33:58.1 |
HIP 112238 |
10.87 |
| 2026-02-06 12:00 |
22:44:52.31 |
-12:32:31.8 |
HIP 112238 |
14.80 |
| 2026-02-07 00:00 |
22:45:08.25 |
-12:31:05.5 |
HIP 112238 |
18.83 |
| 2026-02-07 12:00 |
22:45:24.21 |
-12:29:39.1 |
HIP 112415 |
22.87 |
| 2026-02-08 00:00 |
22:45:40.19 |
-12:28:12.6 |
HIP 112415 |
19.94 |
| 2026-02-08 12:00 |
22:45:56.20 |
-12:26:46.1 |
HIP 112415 |
17.51 |
| 2026-02-09 00:00 |
22:46:12.22 |
-12:25:19.4 |
HIP 112415 |
15.82 |
| 2026-02-09 12:00 |
22:46:28.26 |
-12:23:52.7 |
HIP 112415 |
15.12 |
| 2026-02-10 00:00 |
22:46:44.32 |
-12:22:26.0 |
HIP 112415 |
15.56 |
| 2026-02-10 12:00 |
22:47:00.40 |
-12:20:59.1 |
HIP 112551 |
14.33 |
| 2026-02-11 00:00 |
22:47:16.49 |
-12:19:32.2 |
HIP 112551 |
12.84 |
| 2026-02-11 12:00 |
22:47:32.61 |
-12:18:05.3 |
HIP 112551 |
12.63 |
| 2026-02-12 00:00 |
22:47:48.74 |
-12:16:38.3 |
HIP 112551 |
13.77 |
| 2026-02-12 12:00 |
22:48:04.88 |
-12:15:11.2 |
HIP 112551 |
15.96 |
| 2026-02-13 00:00 |
22:48:21.04 |
-12:13:44.1 |
HIP 112551 |
18.85 |
| 2026-02-13 12:00 |
22:48:37.22 |
-12:12:17.0 |
HIP 112551 |
22.17 |
| 2026-02-14 00:00 |
22:48:53.41 |
-12:10:49.8 |
HIP 112551 |
25.75 |
| 2026-02-14 12:00 |
22:49:09.61 |
-12:09:22.6 |
HIP 112551 |
29.50 |
| 2026-02-15 00:00 |
22:49:25.83 |
-12:07:55.4 |
HIP 112551 |
33.37 |
| 2026-02-15 12:00 |
22:49:42.05 |
-12:06:28.1 |
HIP 112799 |
37.25 |
| 2026-02-16 00:00 |
22:49:58.29 |
-12:05:00.9 |
HIP 112799 |
37.50 |
| 2026-02-16 12:00 |
22:50:14.54 |
-12:03:33.6 |
HIP 112799 |
38.23 |
| 2026-02-17 00:00 |
22:50:30.80 |
-12:02:06.3 |
HIP 112799 |
39.39 |
| 2026-02-17 12:00 |
22:50:47.07 |
-12:00:39.0 |
HIP 112799 |
40.96 |
| 2026-02-18 00:00 |
22:51:03.35 |
-11:59:11.7 |
HIP 113031 |
41.93 |
| 2026-02-18 12:00 |
22:51:19.64 |
-11:57:44.4 |
HIP 113031 |
37.79 |
| 2026-02-19 00:00 |
22:51:35.93 |
-11:56:17.1 |
HIP 113031 |
33.67 |
| 2026-02-19 12:00 |
22:51:52.23 |
-11:54:49.8 |
HIP 113031 |
29.59 |
| 2026-02-20 00:00 |
22:52:08.54 |
-11:53:22.5 |
HIP 113031 |
25.56 |
| 2026-02-20 12:00 |
22:52:24.85 |
-11:51:55.3 |
HIP 113031 |
21.61 |
| 2026-02-21 00:00 |
22:52:41.17 |
-11:50:28.1 |
HIP 113031 |
17.80 |
| 2026-02-21 12:00 |
22:52:57.49 |
-11:49:00.9 |
HIP 113031 |
14.24 |
| 2026-02-22 00:00 |
22:53:13.82 |
-11:47:33.7 |
HIP 113031 |
11.18 |
| 2026-02-22 12:00 |
22:53:30.15 |
-11:46:06.6 |
HIP 113031 |
9.13 |
| 2026-02-23 00:00 |
22:53:46.48 |
-11:44:39.5 |
HIP 113031 |
8.82 |
| 2026-02-23 12:00 |
22:54:02.81 |
-11:43:12.5 |
HIP 113031 |
10.41 |
| 2026-02-24 00:00 |
22:54:19.15 |
-11:41:45.5 |
HIP 113031 |
13.24 |