P/2023 B1 (PANSTARRS)
メタデータ
| 項目 |
値 |
| Designation |
P/2023 B1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-05-02T05:53:45.058560Z |
| Orbit solution date (soln_date, UTC) |
2024-03-19T12:13:30Z |
| Obs used |
509 |
| NEO |
- |
| M1 |
6.200 |
| K1 |
10.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2023-01-21T11:25:35.040000Z |
| Discovery magnitude (MPC) |
17.72 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) |
2023-03-08.0000000 |
| e |
0.12908968 |
| q (au) |
6.140427 |
| a (au) |
7.050585 |
| i (deg) |
14.588159 |
| Ω (om, deg) |
78.582880 |
| ω (w, deg) |
81.602218 |
| M (ma, deg) |
357.091530 |
等級
散乱 + 全体線形
$$
M_a = (14.413 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.413 |
| n |
2.000 |
| gf |
0.988 |
| gb |
-0.825 |
| 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) |
| 2026-02-03 00:00 |
15:40:13.29 |
-11:45:37.6 |
HIP 76828 |
15.34 |
| 2026-02-03 12:00 |
15:40:23.75 |
-11:46:03.7 |
HIP 76828 |
12.86 |
| 2026-02-04 00:00 |
15:40:34.09 |
-11:46:29.1 |
HIP 76828 |
10.46 |
| 2026-02-04 12:00 |
15:40:44.30 |
-11:46:54.1 |
HIP 76828 |
8.19 |
| 2026-02-05 00:00 |
15:40:54.39 |
-11:47:18.5 |
HIP 76828 |
6.17 |
| 2026-02-05 12:00 |
15:41:04.35 |
-11:47:42.3 |
HIP 76828 |
4.65 |
| 2026-02-06 00:00 |
15:41:14.18 |
-11:48:05.6 |
HIP 76828 |
4.17 |
| 2026-02-06 12:00 |
15:41:23.88 |
-11:48:28.3 |
HIP 76828 |
4.99 |
| 2026-02-07 00:00 |
15:41:33.45 |
-11:48:50.6 |
HIP 76828 |
6.60 |
| 2026-02-07 12:00 |
15:41:42.89 |
-11:49:12.2 |
HIP 76828 |
8.55 |
| 2026-02-08 00:00 |
15:41:52.20 |
-11:49:33.4 |
HIP 76828 |
10.63 |
| 2026-02-08 12:00 |
15:42:01.37 |
-11:49:54.0 |
HIP 76828 |
12.75 |
| 2026-02-09 00:00 |
15:42:10.41 |
-11:50:14.0 |
HIP 76828 |
14.89 |
| 2026-02-09 12:00 |
15:42:19.32 |
-11:50:33.5 |
HIP 76828 |
17.02 |
| 2026-02-10 00:00 |
15:42:28.10 |
-11:50:52.5 |
HIP 76828 |
19.13 |
| 2026-02-10 12:00 |
15:42:36.74 |
-11:51:10.9 |
HIP 76828 |
21.23 |
| 2026-02-11 00:00 |
15:42:45.24 |
-11:51:28.8 |
HIP 77071 |
23.08 |
| 2026-02-11 12:00 |
15:42:53.61 |
-11:51:46.2 |
HIP 77071 |
21.04 |
| 2026-02-12 00:00 |
15:43:01.84 |
-11:52:03.0 |
HIP 77071 |
19.03 |
| 2026-02-12 12:00 |
15:43:09.94 |
-11:52:19.4 |
HIP 77071 |
17.07 |
| 2026-02-13 00:00 |
15:43:17.89 |
-11:52:35.1 |
HIP 77071 |
15.15 |
| 2026-02-13 12:00 |
15:43:25.71 |
-11:52:50.4 |
HIP 77071 |
13.27 |
| 2026-02-14 00:00 |
15:43:33.39 |
-11:53:05.1 |
HIP 77071 |
11.45 |
| 2026-02-14 12:00 |
15:43:40.92 |
-11:53:19.3 |
HIP 77071 |
9.69 |
| 2026-02-15 00:00 |
15:43:48.32 |
-11:53:33.0 |
HIP 77071 |
8.01 |
| 2026-02-15 12:00 |
15:43:55.58 |
-11:53:46.1 |
HIP 77071 |
6.44 |
| 2026-02-16 00:00 |
15:44:02.69 |
-11:53:58.7 |
HIP 77071 |
5.05 |
| 2026-02-16 12:00 |
15:44:09.66 |
-11:54:10.8 |
HIP 77071 |
3.98 |
| 2026-02-17 00:00 |
15:44:16.49 |
-11:54:22.4 |
HIP 77071 |
3.48 |
| 2026-02-17 12:00 |
15:44:23.17 |
-11:54:33.5 |
HIP 77071 |
3.73 |
| 2026-02-18 00:00 |
15:44:29.71 |
-11:54:44.1 |
HIP 77071 |
4.58 |
| 2026-02-18 12:00 |
15:44:36.10 |
-11:54:54.1 |
HIP 77071 |
5.74 |
| 2026-02-19 00:00 |
15:44:42.35 |
-11:55:03.7 |
HIP 77071 |
7.03 |
| 2026-02-19 12:00 |
15:44:48.46 |
-11:55:12.7 |
HIP 77071 |
8.38 |
| 2026-02-20 00:00 |
15:44:54.41 |
-11:55:21.2 |
HIP 77071 |
9.73 |
| 2026-02-20 12:00 |
15:45:00.22 |
-11:55:29.3 |
HIP 77071 |
11.08 |
| 2026-02-21 00:00 |
15:45:05.89 |
-11:55:36.8 |
HIP 77071 |
12.42 |
| 2026-02-21 12:00 |
15:45:11.41 |
-11:55:43.8 |
HIP 77071 |
13.73 |
| 2026-02-22 00:00 |
15:45:16.78 |
-11:55:50.4 |
HIP 77071 |
15.01 |
| 2026-02-22 12:00 |
15:45:22.00 |
-11:55:56.4 |
HIP 77071 |
16.27 |
| 2026-02-23 00:00 |
15:45:27.07 |
-11:56:02.0 |
HIP 77071 |
17.49 |
| 2026-02-23 12:00 |
15:45:32.00 |
-11:56:07.1 |
HIP 77071 |
18.68 |
| 2026-02-24 00:00 |
15:45:36.77 |
-11:56:11.7 |
HIP 77071 |
19.84 |