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 |
0.999 |
| gb |
-0.500 |
| 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) |
| 2026-06-01 00:00 |
11:55:23.14 |
-14:29:21.0 |
HIP 58084 |
29.45 |
| 2026-06-01 12:00 |
11:55:35.23 |
-14:26:50.8 |
HIP 58084 |
28.24 |
| 2026-06-02 00:00 |
11:55:47.58 |
-14:24:23.0 |
HIP 58084 |
27.58 |
| 2026-06-02 12:00 |
11:56:00.20 |
-14:21:57.4 |
HIP 58084 |
27.54 |
| 2026-06-03 00:00 |
11:56:13.09 |
-14:19:34.2 |
HIP 58084 |
28.11 |
| 2026-06-03 12:00 |
11:56:26.24 |
-14:17:13.3 |
HIP 58354 |
25.04 |
| 2026-06-04 00:00 |
11:56:39.65 |
-14:14:54.7 |
HIP 58354 |
21.13 |
| 2026-06-04 12:00 |
11:56:53.32 |
-14:12:38.4 |
HIP 58354 |
17.21 |
| 2026-06-05 00:00 |
11:57:07.25 |
-14:10:24.4 |
HIP 58354 |
13.30 |
| 2026-06-05 12:00 |
11:57:21.43 |
-14:08:12.7 |
HIP 58354 |
9.46 |
| 2026-06-06 00:00 |
11:57:35.88 |
-14:06:03.3 |
HIP 58354 |
5.86 |
| 2026-06-06 12:00 |
11:57:50.57 |
-14:03:56.3 |
HIP 58354 |
3.55 |
| 2026-06-07 00:00 |
11:58:05.52 |
-14:01:51.5 |
HIP 58354 |
5.00 |
| 2026-06-07 12:00 |
11:58:20.72 |
-13:59:49.0 |
HIP 58354 |
8.51 |
| 2026-06-08 00:00 |
11:58:36.16 |
-13:57:48.8 |
HIP 58354 |
12.48 |
| 2026-06-08 12:00 |
11:58:51.86 |
-13:55:50.9 |
HIP 58354 |
16.61 |
| 2026-06-09 00:00 |
11:59:07.80 |
-13:53:55.3 |
HIP 58354 |
20.83 |
| 2026-06-09 12:00 |
11:59:23.98 |
-13:52:02.0 |
HIP 58354 |
25.10 |
| 2026-06-10 00:00 |
11:59:40.41 |
-13:50:11.0 |
HIP 58354 |
29.43 |
| 2026-06-10 12:00 |
11:59:57.08 |
-13:48:22.2 |
HIP 58354 |
33.81 |
| 2026-06-11 00:00 |
12:00:13.99 |
-13:46:35.7 |
HIP 58354 |
38.23 |
| 2026-06-11 12:00 |
12:00:31.14 |
-13:44:51.5 |
HIP 58354 |
42.69 |
| 2026-06-12 00:00 |
12:00:48.53 |
-13:43:09.6 |
HIP 58354 |
47.19 |
| 2026-06-12 12:00 |
12:01:06.15 |
-13:41:29.9 |
HIP 58749 |
45.94 |
| 2026-06-13 00:00 |
12:01:24.01 |
-13:39:52.5 |
HIP 58749 |
42.14 |
| 2026-06-13 12:00 |
12:01:42.10 |
-13:38:17.4 |
HIP 58749 |
38.52 |
| 2026-06-14 00:00 |
12:02:00.42 |
-13:36:44.5 |
HIP 58749 |
35.17 |
| 2026-06-14 12:00 |
12:02:18.97 |
-13:35:13.8 |
HIP 58749 |
32.17 |
| 2026-06-15 00:00 |
12:02:37.75 |
-13:33:45.4 |
HIP 58749 |
29.68 |
| 2026-06-15 12:00 |
12:02:56.76 |
-13:32:19.2 |
HIP 58749 |
27.83 |
| 2026-06-16 00:00 |
12:03:15.99 |
-13:30:55.3 |
HIP 58749 |
26.78 |
| 2026-06-16 12:00 |
12:03:35.45 |
-13:29:33.5 |
HIP 58749 |
26.66 |
| 2026-06-17 00:00 |
12:03:55.12 |
-13:28:14.0 |
HIP 58749 |
27.50 |
| 2026-06-17 12:00 |
12:04:15.02 |
-13:26:56.7 |
HIP 59013 |
26.91 |
| 2026-06-18 00:00 |
12:04:35.14 |
-13:25:41.5 |
HIP 59013 |
21.87 |
| 2026-06-18 12:00 |
12:04:55.47 |
-13:24:28.6 |
HIP 59013 |
16.79 |
| 2026-06-19 00:00 |
12:05:16.01 |
-13:23:17.8 |
HIP 59013 |
11.69 |
| 2026-06-19 12:00 |
12:05:36.77 |
-13:22:09.2 |
HIP 59013 |
6.62 |
| 2026-06-20 00:00 |
12:05:57.74 |
-13:21:02.8 |
HIP 59013 |
2.17 |
| 2026-06-20 12:00 |
12:06:18.92 |
-13:19:58.4 |
HIP 59013 |
4.53 |
| 2026-06-21 00:00 |
12:06:40.31 |
-13:18:56.3 |
HIP 59013 |
9.63 |
| 2026-06-21 12:00 |
12:07:01.90 |
-13:17:56.2 |
HIP 59013 |
14.92 |
| 2026-06-22 00:00 |
12:07:23.70 |
-13:16:58.3 |
HIP 59013 |
20.29 |