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) |
| 2026-06-01 00:00 |
23:36:45.63 |
-08:30:55.0 |
HIP 116470 |
18.77 |
| 2026-06-01 12:00 |
23:36:52.43 |
-08:30:45.1 |
HIP 116470 |
19.94 |
| 2026-06-02 00:00 |
23:36:59.13 |
-08:30:35.8 |
HIP 116639 |
19.43 |
| 2026-06-02 12:00 |
23:37:05.74 |
-08:30:27.3 |
HIP 116639 |
17.98 |
| 2026-06-03 00:00 |
23:37:12.25 |
-08:30:19.4 |
HIP 116639 |
16.57 |
| 2026-06-03 12:00 |
23:37:18.67 |
-08:30:12.2 |
HIP 116639 |
15.22 |
| 2026-06-04 00:00 |
23:37:24.99 |
-08:30:05.7 |
HIP 116639 |
13.94 |
| 2026-06-04 12:00 |
23:37:31.22 |
-08:29:59.8 |
HIP 116639 |
12.73 |
| 2026-06-05 00:00 |
23:37:37.36 |
-08:29:54.7 |
HIP 116639 |
11.61 |
| 2026-06-05 12:00 |
23:37:43.40 |
-08:29:50.2 |
HIP 116639 |
10.60 |
| 2026-06-06 00:00 |
23:37:49.34 |
-08:29:46.4 |
HIP 116639 |
9.72 |
| 2026-06-06 12:00 |
23:37:55.19 |
-08:29:43.3 |
HIP 116639 |
9.00 |
| 2026-06-07 00:00 |
23:38:00.94 |
-08:29:40.9 |
HIP 116639 |
8.46 |
| 2026-06-07 12:00 |
23:38:06.59 |
-08:29:39.1 |
HIP 116639 |
8.13 |
| 2026-06-08 00:00 |
23:38:12.15 |
-08:29:38.1 |
HIP 116639 |
8.02 |
| 2026-06-08 12:00 |
23:38:17.61 |
-08:29:37.7 |
HIP 116639 |
8.13 |
| 2026-06-09 00:00 |
23:38:22.97 |
-08:29:38.1 |
HIP 116639 |
8.43 |
| 2026-06-09 12:00 |
23:38:28.23 |
-08:29:39.1 |
HIP 116639 |
8.91 |
| 2026-06-10 00:00 |
23:38:33.40 |
-08:29:40.8 |
HIP 116639 |
9.51 |
| 2026-06-10 12:00 |
23:38:38.46 |
-08:29:43.3 |
HIP 116639 |
10.22 |
| 2026-06-11 00:00 |
23:38:43.42 |
-08:29:46.4 |
HIP 116639 |
11.00 |
| 2026-06-11 12:00 |
23:38:48.29 |
-08:29:50.2 |
HIP 116639 |
11.83 |
| 2026-06-12 00:00 |
23:38:53.05 |
-08:29:54.8 |
HIP 116639 |
12.69 |
| 2026-06-12 12:00 |
23:38:57.72 |
-08:30:00.0 |
HIP 116639 |
13.57 |
| 2026-06-13 00:00 |
23:39:02.28 |
-08:30:05.9 |
HIP 116639 |
14.46 |
| 2026-06-13 12:00 |
23:39:06.75 |
-08:30:12.6 |
HIP 116639 |
15.36 |
| 2026-06-14 00:00 |
23:39:11.11 |
-08:30:19.9 |
HIP 116639 |
16.26 |
| 2026-06-14 12:00 |
23:39:15.37 |
-08:30:28.0 |
HIP 116639 |
17.15 |
| 2026-06-15 00:00 |
23:39:19.52 |
-08:30:36.7 |
HIP 116639 |
18.03 |
| 2026-06-15 12:00 |
23:39:23.58 |
-08:30:46.2 |
HIP 116639 |
18.90 |
| 2026-06-16 00:00 |
23:39:27.53 |
-08:30:56.4 |
HIP 116639 |
19.75 |
| 2026-06-16 12:00 |
23:39:31.38 |
-08:31:07.3 |
HIP 116639 |
20.59 |
| 2026-06-17 00:00 |
23:39:35.13 |
-08:31:18.8 |
HIP 116639 |
21.41 |
| 2026-06-17 12:00 |
23:39:38.77 |
-08:31:31.1 |
HIP 116639 |
22.22 |
| 2026-06-18 00:00 |
23:39:42.31 |
-08:31:44.1 |
HIP 116639 |
23.00 |
| 2026-06-18 12:00 |
23:39:45.75 |
-08:31:57.8 |
HIP 116639 |
23.77 |
| 2026-06-19 00:00 |
23:39:49.08 |
-08:32:12.2 |
HIP 116639 |
24.52 |
| 2026-06-19 12:00 |
23:39:52.32 |
-08:32:27.3 |
HIP 116639 |
25.24 |
| 2026-06-20 00:00 |
23:39:55.44 |
-08:32:43.1 |
HIP 116639 |
25.95 |
| 2026-06-20 12:00 |
23:39:58.46 |
-08:32:59.6 |
HIP 116639 |
26.63 |
| 2026-06-21 00:00 |
23:40:01.38 |
-08:33:16.8 |
HIP 116639 |
27.30 |
| 2026-06-21 12:00 |
23:40:04.20 |
-08:33:34.7 |
HIP 116891 |
27.70 |
| 2026-06-22 00:00 |
23:40:06.91 |
-08:33:53.3 |
HIP 116891 |
26.98 |