503P/PANSTARRS
メタデータ
| 項目 |
値 |
| Designation |
503P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-11-12T13:38:28.222080Z |
| Orbit solution date (soln_date, UTC) |
2025-07-07T14:12:36Z |
| Obs used |
123 |
| NEO |
- |
| M1 |
14.400 |
| K1 |
11.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2018-06-03T06:49:46.848000Z |
| Discovery magnitude (MPC) |
20.00 w |
| 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) |
2019-10-11.0000000 |
| e |
0.48303012 |
| q (au) |
1.885951 |
| a (au) |
3.648087 |
| i (deg) |
10.594784 |
| Ω (om, deg) |
268.626025 |
| ω (w, deg) |
17.915078 |
| M (ma, deg) |
47.022821 |
等級
散乱 + 全体線形
$$
M_a = (12.375 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.375 |
| n |
6.000 |
| gf |
1.000 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
21:27:16.76 |
-08:41:04.4 |
HIP 105931 |
6.30 |
| 2026-02-03 12:00 |
21:28:24.66 |
-08:34:39.1 |
HIP 105970 |
16.33 |
| 2026-02-04 00:00 |
21:29:32.44 |
-08:28:13.0 |
HIP 106142 |
10.13 |
| 2026-02-04 12:00 |
21:30:40.11 |
-08:21:46.1 |
HIP 106142 |
17.67 |
| 2026-02-05 00:00 |
21:31:47.67 |
-08:15:18.4 |
HIP 106268 |
29.67 |
| 2026-02-05 12:00 |
21:32:55.11 |
-08:08:50.0 |
HIP 106510 |
32.12 |
| 2026-02-06 00:00 |
21:34:02.44 |
-08:02:20.8 |
HIP 106510 |
18.17 |
| 2026-02-06 12:00 |
21:35:09.67 |
-07:55:50.9 |
HIP 106510 |
16.35 |
| 2026-02-07 00:00 |
21:36:16.78 |
-07:49:20.3 |
HIP 106727 |
12.40 |
| 2026-02-07 12:00 |
21:37:23.78 |
-07:42:48.9 |
HIP 106727 |
7.44 |
| 2026-02-08 00:00 |
21:38:30.67 |
-07:36:16.8 |
HIP 106842 |
3.56 |
| 2026-02-08 12:00 |
21:39:37.44 |
-07:29:44.1 |
HIP 106842 |
17.98 |
| 2026-02-09 00:00 |
21:40:44.11 |
-07:23:10.6 |
HIP 107015 |
25.09 |
| 2026-02-09 12:00 |
21:41:50.67 |
-07:16:36.5 |
HIP 107251 |
24.66 |
| 2026-02-10 00:00 |
21:42:57.11 |
-07:10:01.8 |
HIP 107251 |
16.02 |
| 2026-02-10 12:00 |
21:44:03.45 |
-07:03:26.4 |
HIP 107319 |
6.61 |
| 2026-02-11 00:00 |
21:45:09.67 |
-06:56:50.3 |
HIP 107307 |
17.02 |
| 2026-02-11 12:00 |
21:46:15.78 |
-06:50:13.7 |
HIP 107475 |
32.36 |
| 2026-02-12 00:00 |
21:47:21.79 |
-06:43:36.4 |
HIP 107627 |
18.53 |
| 2026-02-12 12:00 |
21:48:27.68 |
-06:36:58.6 |
HIP 107627 |
11.40 |
| 2026-02-13 00:00 |
21:49:33.46 |
-06:30:20.2 |
HIP 107668 |
21.22 |
| 2026-02-13 12:00 |
21:50:39.13 |
-06:23:41.2 |
HIP 107871 |
18.83 |
| 2026-02-14 00:00 |
21:51:44.69 |
-06:17:01.7 |
HIP 107871 |
22.99 |
| 2026-02-14 12:00 |
21:52:50.14 |
-06:10:21.6 |
HIP 108089 |
26.48 |
| 2026-02-15 00:00 |
21:53:55.48 |
-06:03:41.0 |
HIP 108089 |
27.22 |
| 2026-02-15 12:00 |
21:55:00.71 |
-05:57:00.0 |
HIP 108272 |
17.64 |
| 2026-02-16 00:00 |
21:56:05.83 |
-05:50:18.4 |
HIP 108272 |
0.56 |
| 2026-02-16 12:00 |
21:57:10.84 |
-05:43:36.3 |
HIP 108272 |
17.40 |
| 2026-02-17 00:00 |
21:58:15.74 |
-05:36:53.7 |
HIP 108453 |
11.43 |
| 2026-02-17 12:00 |
21:59:20.53 |
-05:30:10.7 |
HIP 108544 |
1.71 |
| 2026-02-18 00:00 |
22:00:25.20 |
-05:23:27.2 |
HIP 108544 |
17.47 |
| 2026-02-18 12:00 |
22:01:29.77 |
-05:16:43.4 |
HIP 108544 |
34.85 |
| 2026-02-19 00:00 |
22:02:34.23 |
-05:09:59.0 |
HIP 108895 |
34.50 |
| 2026-02-19 12:00 |
22:03:38.57 |
-05:03:14.3 |
HIP 108972 |
19.03 |
| 2026-02-20 00:00 |
22:04:42.81 |
-04:56:29.2 |
HIP 108972 |
6.39 |
| 2026-02-20 12:00 |
22:05:46.93 |
-04:49:43.8 |
HIP 108972 |
17.93 |
| 2026-02-21 00:00 |
22:06:50.95 |
-04:42:57.9 |
HIP 108972 |
34.68 |
| 2026-02-21 12:00 |
22:07:54.85 |
-04:36:11.7 |
HIP 109388 |
26.22 |
| 2026-02-22 00:00 |
22:08:58.64 |
-04:29:25.2 |
HIP 109388 |
13.64 |
| 2026-02-22 12:00 |
22:10:02.33 |
-04:22:38.3 |
HIP 109466 |
10.25 |
| 2026-02-23 00:00 |
22:11:05.90 |
-04:15:51.2 |
HIP 109466 |
8.03 |
| 2026-02-23 12:00 |
22:12:09.36 |
-04:09:03.7 |
HIP 109698 |
22.91 |
| 2026-02-24 00:00 |
22:13:12.71 |
-04:02:16.0 |
HIP 109698 |
9.93 |