456P/PANSTARRS
メタデータ
| 項目 |
値 |
| Designation |
456P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2019-09-04T09:54:13.236480Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T09:13:18Z |
| Obs used |
60 |
| NEO |
- |
| M1 |
12.000 |
| K1 |
15.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2012-08-18T12:00:39.830400Z |
| Discovery magnitude (MPC) |
23.40 r |
| Discovery observatory (MPC) |
T14 · Canada-France-Hawaii Telescope, Maunakea |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2021-07-18.0000000 |
| e |
0.11870899 |
| q (au) |
2.789385 |
| a (au) |
3.165113 |
| i (deg) |
16.961610 |
| Ω (om, deg) |
243.224773 |
| ω (w, deg) |
234.671332 |
| M (ma, deg) |
119.475406 |
等級
散乱 + 全体線形
$$
M_a = (11.598 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.598 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.502 |
| k |
1.000 |
| 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 |
12:34:54.77 |
-24:16:51.8 |
HIP 61568 |
28.69 |
| 2026-02-03 12:00 |
12:34:56.11 |
-24:19:05.6 |
HIP 61568 |
29.09 |
| 2026-02-04 00:00 |
12:34:57.11 |
-24:21:16.8 |
HIP 61568 |
29.71 |
| 2026-02-04 12:00 |
12:34:57.78 |
-24:23:25.5 |
HIP 61568 |
30.52 |
| 2026-02-05 00:00 |
12:34:58.10 |
-24:25:31.6 |
HIP 61568 |
31.50 |
| 2026-02-05 12:00 |
12:34:58.08 |
-24:27:35.1 |
HIP 61568 |
32.63 |
| 2026-02-06 00:00 |
12:34:57.72 |
-24:29:35.9 |
HIP 61568 |
33.88 |
| 2026-02-06 12:00 |
12:34:57.02 |
-24:31:34.2 |
HIP 61568 |
35.24 |
| 2026-02-07 00:00 |
12:34:55.98 |
-24:33:29.7 |
HIP 61568 |
36.67 |
| 2026-02-07 12:00 |
12:34:54.60 |
-24:35:22.5 |
HIP 61587 |
36.05 |
| 2026-02-08 00:00 |
12:34:52.87 |
-24:37:12.6 |
HIP 61587 |
35.51 |
| 2026-02-08 12:00 |
12:34:50.80 |
-24:38:59.9 |
HIP 61587 |
35.15 |
| 2026-02-09 00:00 |
12:34:48.39 |
-24:40:44.4 |
HIP 61587 |
34.97 |
| 2026-02-09 12:00 |
12:34:45.63 |
-24:42:26.1 |
HIP 61587 |
34.97 |
| 2026-02-10 00:00 |
12:34:42.53 |
-24:44:04.9 |
HIP 61587 |
35.15 |
| 2026-02-10 12:00 |
12:34:39.09 |
-24:45:40.9 |
HIP 61263 |
35.37 |
| 2026-02-11 00:00 |
12:34:35.31 |
-24:47:13.9 |
HIP 61263 |
33.59 |
| 2026-02-11 12:00 |
12:34:31.18 |
-24:48:44.1 |
HIP 61263 |
31.82 |
| 2026-02-12 00:00 |
12:34:26.71 |
-24:50:11.3 |
HIP 61263 |
30.06 |
| 2026-02-12 12:00 |
12:34:21.90 |
-24:51:35.5 |
HIP 61263 |
28.29 |
| 2026-02-13 00:00 |
12:34:16.75 |
-24:52:56.6 |
HIP 61263 |
26.54 |
| 2026-02-13 12:00 |
12:34:11.26 |
-24:54:14.8 |
HIP 61263 |
24.80 |
| 2026-02-14 00:00 |
12:34:05.43 |
-24:55:29.9 |
HIP 61263 |
23.07 |
| 2026-02-14 12:00 |
12:33:59.27 |
-24:56:41.9 |
HIP 61263 |
21.38 |
| 2026-02-15 00:00 |
12:33:52.76 |
-24:57:50.8 |
HIP 61263 |
19.73 |
| 2026-02-15 12:00 |
12:33:45.92 |
-24:58:56.5 |
HIP 61263 |
18.15 |
| 2026-02-16 00:00 |
12:33:38.74 |
-24:59:59.1 |
HIP 61263 |
16.67 |
| 2026-02-16 12:00 |
12:33:31.23 |
-25:00:58.5 |
HIP 61263 |
15.32 |
| 2026-02-17 00:00 |
12:33:23.39 |
-25:01:54.7 |
HIP 61263 |
14.17 |
| 2026-02-17 12:00 |
12:33:15.22 |
-25:02:47.6 |
HIP 61263 |
13.28 |
| 2026-02-18 00:00 |
12:33:06.72 |
-25:03:37.3 |
HIP 61263 |
12.73 |
| 2026-02-18 12:00 |
12:32:57.89 |
-25:04:23.7 |
HIP 61263 |
12.59 |
| 2026-02-19 00:00 |
12:32:48.73 |
-25:05:06.8 |
HIP 61263 |
12.90 |
| 2026-02-19 12:00 |
12:32:39.25 |
-25:05:46.6 |
HIP 61263 |
13.65 |
| 2026-02-20 00:00 |
12:32:29.46 |
-25:06:23.1 |
HIP 61263 |
14.80 |
| 2026-02-20 12:00 |
12:32:19.34 |
-25:06:56.1 |
HIP 61263 |
16.29 |
| 2026-02-21 00:00 |
12:32:08.91 |
-25:07:25.8 |
HIP 61263 |
18.05 |
| 2026-02-21 12:00 |
12:31:58.16 |
-25:07:52.1 |
HIP 61263 |
20.04 |
| 2026-02-22 00:00 |
12:31:47.10 |
-25:08:15.0 |
HIP 61263 |
22.21 |
| 2026-02-22 12:00 |
12:31:35.74 |
-25:08:34.4 |
HIP 61263 |
24.53 |
| 2026-02-23 00:00 |
12:31:24.07 |
-25:08:50.4 |
HIP 60954 |
25.21 |
| 2026-02-23 12:00 |
12:31:12.09 |
-25:09:02.9 |
HIP 60954 |
22.64 |
| 2026-02-24 00:00 |
12:30:59.82 |
-25:09:12.0 |
HIP 60954 |
20.08 |