メタデータ
| 項目 |
値 |
| Designation |
C/2022 S3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-01-21T16:27:20.963520Z |
| Orbit solution date (soln_date, UTC) |
2022-11-10T22:12:52Z |
| Obs used |
75 |
| NEO |
- |
| M1 |
13.900 |
| K1 |
18.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-09-25T06:08:52.569600Z |
| Discovery magnitude (MPC) |
20.88 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2022-10-05.0000000 |
| e |
1.00041119 |
| q (au) |
0.838456 |
| a (au) |
-2039.091991 |
| i (deg) |
78.560279 |
| Ω (om, deg) |
157.321243 |
| ω (w, deg) |
267.959178 |
| M (ma, deg) |
-0.001163 |
等級
散乱 + 全体線形
$$
M_a = (15.426 + 4.862\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.426 |
| n |
4.862 |
| gf |
0.800 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
1.000 |
| 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) |
| 2026-03-26 00:00 |
13:53:11.29 |
+54:31:25.6 |
HIP 67701 |
9.98 |
| 2026-03-26 12:00 |
13:52:57.04 |
+54:32:56.8 |
HIP 67701 |
7.89 |
| 2026-03-27 00:00 |
13:52:42.72 |
+54:34:26.8 |
HIP 67701 |
6.16 |
| 2026-03-27 12:00 |
13:52:28.33 |
+54:35:55.6 |
HIP 67701 |
5.16 |
| 2026-03-28 00:00 |
13:52:13.88 |
+54:37:23.0 |
HIP 67701 |
5.30 |
| 2026-03-28 12:00 |
13:51:59.36 |
+54:38:49.1 |
HIP 67701 |
6.51 |
| 2026-03-29 00:00 |
13:51:44.78 |
+54:40:14.0 |
HIP 67701 |
8.32 |
| 2026-03-29 12:00 |
13:51:30.14 |
+54:41:37.6 |
HIP 67701 |
10.43 |
| 2026-03-30 00:00 |
13:51:15.44 |
+54:42:59.8 |
HIP 67701 |
12.68 |
| 2026-03-30 12:00 |
13:51:00.69 |
+54:44:20.7 |
HIP 67511 |
11.62 |
| 2026-03-31 00:00 |
13:50:45.88 |
+54:45:40.4 |
HIP 67511 |
9.16 |
| 2026-03-31 12:00 |
13:50:31.01 |
+54:46:58.7 |
HIP 67511 |
6.75 |
| 2026-04-01 00:00 |
13:50:16.10 |
+54:48:15.6 |
HIP 67511 |
4.47 |
| 2026-04-01 12:00 |
13:50:01.13 |
+54:49:31.3 |
HIP 67511 |
2.65 |
| 2026-04-02 00:00 |
13:49:46.11 |
+54:50:45.6 |
HIP 67511 |
2.57 |
| 2026-04-02 12:00 |
13:49:31.05 |
+54:51:58.6 |
HIP 67511 |
4.32 |
| 2026-04-03 00:00 |
13:49:15.94 |
+54:53:10.2 |
HIP 67511 |
6.56 |
| 2026-04-03 12:00 |
13:49:00.79 |
+54:54:20.5 |
HIP 67511 |
8.93 |
| 2026-04-04 00:00 |
13:48:45.60 |
+54:55:29.4 |
HIP 67511 |
11.34 |
| 2026-04-04 12:00 |
13:48:30.37 |
+54:56:37.0 |
HIP 67511 |
13.77 |
| 2026-04-05 00:00 |
13:48:15.10 |
+54:57:43.2 |
HIP 67511 |
16.21 |
| 2026-04-05 12:00 |
13:47:59.79 |
+54:58:48.1 |
HIP 67511 |
18.64 |
| 2026-04-06 00:00 |
13:47:44.45 |
+54:59:51.6 |
HIP 67511 |
21.07 |
| 2026-04-06 12:00 |
13:47:29.07 |
+55:00:53.7 |
HIP 67511 |
23.50 |
| 2026-04-07 00:00 |
13:47:13.66 |
+55:01:54.5 |
HIP 67511 |
25.93 |
| 2026-04-07 12:00 |
13:46:58.23 |
+55:02:53.8 |
HIP 67511 |
28.35 |
| 2026-04-08 00:00 |
13:46:42.76 |
+55:03:51.8 |
HIP 67511 |
30.77 |
| 2026-04-08 12:00 |
13:46:27.27 |
+55:04:48.4 |
HIP 67511 |
33.18 |
| 2026-04-09 00:00 |
13:46:11.76 |
+55:05:43.7 |
HIP 67511 |
35.58 |
| 2026-04-09 12:00 |
13:45:56.22 |
+55:06:37.5 |
HIP 67021 |
35.14 |
| 2026-04-10 00:00 |
13:45:40.66 |
+55:07:29.9 |
HIP 67021 |
33.42 |
| 2026-04-10 12:00 |
13:45:25.09 |
+55:08:21.0 |
HIP 67021 |
31.79 |
| 2026-04-11 00:00 |
13:45:09.50 |
+55:09:10.6 |
HIP 67021 |
30.29 |
| 2026-04-11 12:00 |
13:44:53.89 |
+55:09:58.9 |
HIP 67021 |
28.92 |
| 2026-04-12 00:00 |
13:44:38.27 |
+55:10:45.7 |
HIP 67021 |
27.71 |
| 2026-04-12 12:00 |
13:44:22.64 |
+55:11:31.2 |
HIP 67021 |
26.68 |
| 2026-04-13 00:00 |
13:44:07.00 |
+55:12:15.2 |
HIP 67021 |
25.85 |
| 2026-04-13 12:00 |
13:43:51.35 |
+55:12:57.9 |
HIP 67021 |
25.22 |
| 2026-04-14 00:00 |
13:43:35.70 |
+55:13:39.1 |
HIP 67021 |
24.83 |
| 2026-04-14 12:00 |
13:43:20.04 |
+55:14:18.9 |
HIP 67021 |
24.67 |
| 2026-04-15 00:00 |
13:43:04.38 |
+55:14:57.3 |
HIP 67021 |
24.75 |
| 2026-04-15 12:00 |
13:42:48.72 |
+55:15:34.3 |
HIP 67021 |
25.06 |
| 2026-04-16 00:00 |
13:42:33.07 |
+55:16:09.9 |
HIP 67021 |
25.60 |