メタデータ
| 項目 |
値 |
| Designation |
455P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-07-23T16:02:18.502080Z |
| Orbit solution date (soln_date, UTC) |
2023-02-09T05:35:52Z |
| Obs used |
71 |
| NEO |
- |
| M1 |
9.400 |
| K1 |
31.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2011-08-21T13:23:27.830400Z |
| Discovery magnitude (MPC) |
23.18 G |
| 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) |
2017-04-11.0000000 |
| e |
0.30420723 |
| q (au) |
2.195173 |
| a (au) |
3.154924 |
| i (deg) |
14.138047 |
| Ω (om, deg) |
146.211575 |
| ω (w, deg) |
237.939928 |
| M (ma, deg) |
341.766645 |
等級
散乱 + 全体線形
$$
M_a = (20.000 + 3.420\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
20.000 |
| n |
3.420 |
| gf |
0.925 |
| gb |
-0.830 |
| k |
0.981 |
| δ90 |
4.927 |
| 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 |
14:17:59.02 |
+04:19:58.3 |
HIP 69966 |
18.08 |
| 2026-06-01 12:00 |
14:17:44.93 |
+04:19:58.4 |
HIP 69966 |
21.19 |
| 2026-06-02 00:00 |
14:17:31.02 |
+04:19:56.5 |
HIP 69966 |
24.34 |
| 2026-06-02 12:00 |
14:17:17.32 |
+04:19:52.6 |
HIP 69806 |
27.19 |
| 2026-06-03 00:00 |
14:17:03.81 |
+04:19:46.9 |
HIP 69806 |
27.29 |
| 2026-06-03 12:00 |
14:16:50.50 |
+04:19:39.1 |
HIP 69806 |
27.83 |
| 2026-06-04 00:00 |
14:16:37.39 |
+04:19:29.5 |
HIP 69806 |
28.75 |
| 2026-06-04 12:00 |
14:16:24.48 |
+04:19:17.9 |
HIP 69806 |
30.02 |
| 2026-06-05 00:00 |
14:16:11.78 |
+04:19:04.4 |
HIP 69806 |
31.57 |
| 2026-06-05 12:00 |
14:15:59.28 |
+04:18:49.0 |
HIP 69806 |
33.35 |
| 2026-06-06 00:00 |
14:15:46.99 |
+04:18:31.7 |
HIP 69498 |
31.17 |
| 2026-06-06 12:00 |
14:15:34.91 |
+04:18:12.5 |
HIP 69498 |
28.15 |
| 2026-06-07 00:00 |
14:15:23.04 |
+04:17:51.4 |
HIP 69498 |
25.19 |
| 2026-06-07 12:00 |
14:15:11.38 |
+04:17:28.4 |
HIP 69498 |
22.29 |
| 2026-06-08 00:00 |
14:14:59.94 |
+04:17:03.6 |
HIP 69498 |
19.44 |
| 2026-06-08 12:00 |
14:14:48.70 |
+04:16:36.8 |
HIP 69498 |
16.67 |
| 2026-06-09 00:00 |
14:14:37.69 |
+04:16:08.2 |
HIP 69498 |
13.98 |
| 2026-06-09 12:00 |
14:14:26.89 |
+04:15:37.8 |
HIP 69498 |
11.40 |
| 2026-06-10 00:00 |
14:14:16.31 |
+04:15:05.5 |
HIP 69498 |
8.97 |
| 2026-06-10 12:00 |
14:14:05.95 |
+04:14:31.3 |
HIP 69498 |
6.81 |
| 2026-06-11 00:00 |
14:13:55.81 |
+04:13:55.4 |
HIP 69498 |
5.19 |
| 2026-06-11 12:00 |
14:13:45.89 |
+04:13:17.6 |
HIP 69498 |
4.61 |
| 2026-06-12 00:00 |
14:13:36.19 |
+04:12:38.0 |
HIP 69498 |
5.37 |
| 2026-06-12 12:00 |
14:13:26.72 |
+04:11:56.5 |
HIP 69498 |
6.99 |
| 2026-06-13 00:00 |
14:13:17.48 |
+04:11:13.3 |
HIP 69498 |
8.98 |
| 2026-06-13 12:00 |
14:13:08.46 |
+04:10:28.3 |
HIP 69498 |
11.12 |
| 2026-06-14 00:00 |
14:12:59.67 |
+04:09:41.5 |
HIP 69498 |
13.31 |
| 2026-06-14 12:00 |
14:12:51.11 |
+04:08:53.0 |
HIP 69498 |
15.51 |
| 2026-06-15 00:00 |
14:12:42.78 |
+04:08:02.7 |
HIP 69393 |
16.85 |
| 2026-06-15 12:00 |
14:12:34.68 |
+04:07:10.6 |
HIP 69393 |
15.48 |
| 2026-06-16 00:00 |
14:12:26.81 |
+04:06:16.8 |
HIP 69393 |
14.30 |
| 2026-06-16 12:00 |
14:12:19.17 |
+04:05:21.3 |
HIP 69393 |
13.34 |
| 2026-06-17 00:00 |
14:12:11.77 |
+04:04:24.0 |
HIP 69393 |
12.61 |
| 2026-06-17 12:00 |
14:12:04.60 |
+04:03:25.1 |
HIP 69393 |
12.16 |
| 2026-06-18 00:00 |
14:11:57.66 |
+04:02:24.5 |
HIP 69393 |
11.99 |
| 2026-06-18 12:00 |
14:11:50.96 |
+04:01:22.2 |
HIP 69393 |
12.09 |
| 2026-06-19 00:00 |
14:11:44.50 |
+04:00:18.3 |
HIP 69393 |
12.44 |
| 2026-06-19 12:00 |
14:11:38.26 |
+03:59:12.7 |
HIP 69393 |
13.01 |
| 2026-06-20 00:00 |
14:11:32.27 |
+03:58:05.4 |
HIP 69393 |
13.75 |
| 2026-06-20 12:00 |
14:11:26.51 |
+03:56:56.6 |
HIP 69393 |
14.63 |
| 2026-06-21 00:00 |
14:11:20.98 |
+03:55:46.1 |
HIP 69393 |
15.61 |
| 2026-06-21 12:00 |
14:11:15.69 |
+03:54:34.1 |
HIP 69393 |
16.67 |
| 2026-06-22 00:00 |
14:11:10.64 |
+03:53:20.5 |
HIP 69393 |
17.78 |