メタデータ
| 項目 |
値 |
| Designation |
511P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-07-10T19:10:49.324800Z |
| Orbit solution date (soln_date, UTC) |
2026-03-12T02:52:17Z |
| Obs used |
86 |
| NEO |
- |
| M1 |
15.800 |
| K1 |
13.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2015-12-12T12:34:40.684800Z |
| Discovery magnitude (MPC) |
22.58 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) |
2024-03-01.0000000 |
| e |
0.23765110 |
| q (au) |
2.295953 |
| a (au) |
3.011683 |
| i (deg) |
14.783495 |
| Ω (om, deg) |
271.030812 |
| ω (w, deg) |
81.166342 |
| M (ma, deg) |
266.314774 |
等級
散乱 + 全体線形
$$
M_a = (16.304 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.304 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.567 |
| 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) |
| 2026-07-29 00:00 |
06:44:42.46 |
+22:52:14.2 |
HIP 32333 |
3.77 |
| 2026-07-29 12:00 |
06:45:29.05 |
+22:50:16.2 |
HIP 32333 |
7.53 |
| 2026-07-30 00:00 |
06:46:15.55 |
+22:48:17.2 |
HIP 32333 |
18.35 |
| 2026-07-30 12:00 |
06:47:01.96 |
+22:46:17.5 |
HIP 32333 |
29.21 |
| 2026-07-31 00:00 |
06:47:48.27 |
+22:44:16.9 |
HIP 32620 |
24.48 |
| 2026-07-31 12:00 |
06:48:34.49 |
+22:42:15.5 |
HIP 32620 |
21.48 |
| 2026-08-01 00:00 |
06:49:20.62 |
+22:40:13.2 |
HIP 32693 |
21.60 |
| 2026-08-01 12:00 |
06:50:06.64 |
+22:38:10.1 |
HIP 32693 |
22.84 |
| 2026-08-02 00:00 |
06:50:52.58 |
+22:36:06.2 |
HIP 32693 |
28.45 |
| 2026-08-02 12:00 |
06:51:38.42 |
+22:34:01.5 |
HIP 33097 |
30.01 |
| 2026-08-03 00:00 |
06:52:24.16 |
+22:31:56.0 |
HIP 33097 |
22.22 |
| 2026-08-03 12:00 |
06:53:09.80 |
+22:29:49.6 |
HIP 33097 |
17.85 |
| 2026-08-04 00:00 |
06:53:55.34 |
+22:27:42.5 |
HIP 33251 |
17.02 |
| 2026-08-04 12:00 |
06:54:40.79 |
+22:25:34.5 |
HIP 33251 |
9.72 |
| 2026-08-05 00:00 |
06:55:26.14 |
+22:23:25.8 |
HIP 33251 |
11.36 |
| 2026-08-05 12:00 |
06:56:11.38 |
+22:21:16.2 |
HIP 33251 |
19.79 |
| 2026-08-06 00:00 |
06:56:56.53 |
+22:19:05.9 |
HIP 33537 |
19.78 |
| 2026-08-06 12:00 |
06:57:41.58 |
+22:16:54.8 |
HIP 33564 |
10.81 |
| 2026-08-07 00:00 |
06:58:26.52 |
+22:14:42.9 |
HIP 33564 |
0.47 |
| 2026-08-07 12:00 |
06:59:11.36 |
+22:12:30.2 |
HIP 33656 |
5.20 |
| 2026-08-08 00:00 |
06:59:56.10 |
+22:10:16.7 |
HIP 33656 |
7.27 |
| 2026-08-08 12:00 |
07:00:40.73 |
+22:08:02.5 |
HIP 33656 |
17.39 |
| 2026-08-09 00:00 |
07:01:25.26 |
+22:05:47.5 |
HIP 33911 |
11.88 |
| 2026-08-09 12:00 |
07:02:09.68 |
+22:03:31.7 |
HIP 33911 |
2.75 |
| 2026-08-10 00:00 |
07:02:54.00 |
+22:01:15.2 |
HIP 33962 |
6.00 |
| 2026-08-10 12:00 |
07:03:38.21 |
+21:58:57.9 |
HIP 33962 |
13.89 |
| 2026-08-11 00:00 |
07:04:22.31 |
+21:56:39.9 |
HIP 33962 |
23.86 |
| 2026-08-11 12:00 |
07:05:06.30 |
+21:54:21.2 |
HIP 33962 |
34.12 |
| 2026-08-12 00:00 |
07:05:50.18 |
+21:52:01.7 |
HIP 34418 |
32.10 |
| 2026-08-12 12:00 |
07:06:33.95 |
+21:49:41.5 |
HIP 34418 |
22.42 |
| 2026-08-13 00:00 |
07:07:17.61 |
+21:47:20.6 |
HIP 34418 |
13.87 |
| 2026-08-13 12:00 |
07:08:01.15 |
+21:44:58.9 |
HIP 34418 |
9.92 |
| 2026-08-14 00:00 |
07:08:44.58 |
+21:42:36.5 |
HIP 34418 |
14.82 |
| 2026-08-14 12:00 |
07:09:27.90 |
+21:40:13.5 |
HIP 34452 |
23.09 |
| 2026-08-15 00:00 |
07:10:11.10 |
+21:37:49.7 |
HIP 34690 |
13.99 |
| 2026-08-15 12:00 |
07:10:54.19 |
+21:35:25.2 |
HIP 34690 |
4.35 |
| 2026-08-16 00:00 |
07:11:37.16 |
+21:33:00.1 |
HIP 34690 |
7.34 |
| 2026-08-16 12:00 |
07:12:20.02 |
+21:30:34.2 |
HIP 34856 |
11.23 |
| 2026-08-17 00:00 |
07:13:02.75 |
+21:28:07.7 |
HIP 34856 |
7.95 |
| 2026-08-17 12:00 |
07:13:45.37 |
+21:25:40.5 |
HIP 34856 |
14.47 |
| 2026-08-18 00:00 |
07:14:27.87 |
+21:23:12.6 |
HIP 34856 |
23.73 |
| 2026-08-18 12:00 |
07:15:10.25 |
+21:20:44.1 |
HIP 34856 |
33.51 |
| 2026-08-19 00:00 |
07:15:52.50 |
+21:18:14.9 |
HIP 35280 |
39.14 |