メタデータ
| 項目 |
値 |
| Designation |
516P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2026-08-12T08:01:53.051520Z |
| Orbit solution date (soln_date, UTC) |
2026-06-07T19:15:33Z |
| Obs used |
96 |
| NEO |
- |
| M1 |
17.700 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2013-04-15T11:39:10.742400Z |
| Discovery magnitude (MPC) |
22.20 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) |
2023-06-24.0000000 |
| e |
0.32345368 |
| q (au) |
2.460613 |
| a (au) |
3.637021 |
| i (deg) |
4.009993 |
| Ω (om, deg) |
105.175738 |
| ω (w, deg) |
73.550094 |
| M (ma, deg) |
197.251203 |
等級
散乱 + 全体線形
$$
M_a = (11.573 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.573 |
| 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
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) |
| 2026-09-20 00:00 |
12:21:06.35 |
+00:50:14.5 |
HIP 60440 |
36.81 |
| 2026-09-20 12:00 |
12:21:59.25 |
+00:44:33.4 |
HIP 60440 |
22.89 |
| 2026-09-21 00:00 |
12:22:52.16 |
+00:38:52.4 |
HIP 60440 |
10.36 |
| 2026-09-21 12:00 |
12:23:45.07 |
+00:33:11.5 |
HIP 60440 |
10.24 |
| 2026-09-22 00:00 |
12:24:37.99 |
+00:27:30.8 |
HIP 60440 |
22.74 |
| 2026-09-22 12:00 |
12:25:30.91 |
+00:21:50.3 |
HIP 60688 |
14.62 |
| 2026-09-23 00:00 |
12:26:23.84 |
+00:16:09.9 |
HIP 60748 |
12.85 |
| 2026-09-23 12:00 |
12:27:16.78 |
+00:10:29.6 |
HIP 60748 |
5.24 |
| 2026-09-24 00:00 |
12:28:09.72 |
+00:04:49.5 |
HIP 60748 |
17.45 |
| 2026-09-24 12:00 |
12:29:02.67 |
-00:00:50.4 |
HIP 60953 |
12.90 |
| 2026-09-25 00:00 |
12:29:55.62 |
-00:06:30.1 |
HIP 60953 |
5.06 |
| 2026-09-25 12:00 |
12:30:48.58 |
-00:12:09.7 |
HIP 60953 |
17.31 |
| 2026-09-26 00:00 |
12:31:41.55 |
-00:17:49.1 |
HIP 61240 |
19.40 |
| 2026-09-26 12:00 |
12:32:34.52 |
-00:23:28.2 |
HIP 61240 |
9.33 |
| 2026-09-27 00:00 |
12:33:27.50 |
-00:29:07.2 |
HIP 61240 |
14.57 |
| 2026-09-27 12:00 |
12:34:20.49 |
-00:34:45.9 |
HIP 61240 |
27.43 |
| 2026-09-28 00:00 |
12:35:13.48 |
-00:40:24.5 |
HIP 61531 |
28.63 |
| 2026-09-28 12:00 |
12:36:06.48 |
-00:46:02.8 |
HIP 61531 |
28.73 |
| 2026-09-29 00:00 |
12:36:59.48 |
-00:51:40.8 |
HIP 61711 |
29.22 |
| 2026-09-29 12:00 |
12:37:52.49 |
-00:57:18.7 |
HIP 61711 |
17.08 |
| 2026-09-30 00:00 |
12:38:45.51 |
-01:02:56.3 |
HIP 61711 |
12.00 |
| 2026-09-30 12:00 |
12:39:38.54 |
-01:08:33.6 |
HIP 61711 |
20.27 |
| 2026-10-01 00:00 |
12:40:31.57 |
-01:14:10.7 |
HIP 61941 |
21.36 |
| 2026-10-01 12:00 |
12:41:24.61 |
-01:19:47.5 |
HIP 61941 |
8.15 |
| 2026-10-02 00:00 |
12:42:17.65 |
-01:25:24.1 |
HIP 61941 |
9.54 |
| 2026-10-02 12:00 |
12:43:10.70 |
-01:31:00.4 |
HIP 62103 |
7.72 |
| 2026-10-03 00:00 |
12:44:03.76 |
-01:36:36.4 |
HIP 62103 |
6.74 |
| 2026-10-03 12:00 |
12:44:56.83 |
-01:42:12.0 |
HIP 62166 |
15.06 |
| 2026-10-04 00:00 |
12:45:49.90 |
-01:47:47.4 |
HIP 62380 |
25.30 |
| 2026-10-04 12:00 |
12:46:42.97 |
-01:53:22.5 |
HIP 62380 |
12.83 |
| 2026-10-05 00:00 |
12:47:36.06 |
-01:58:57.3 |
HIP 62380 |
10.18 |
| 2026-10-05 12:00 |
12:48:29.15 |
-02:04:31.8 |
HIP 62380 |
21.37 |
| 2026-10-06 00:00 |
12:49:22.25 |
-02:10:05.9 |
HIP 62602 |
8.82 |
| 2026-10-06 12:00 |
12:50:15.35 |
-02:15:39.6 |
HIP 62602 |
8.44 |
| 2026-10-07 00:00 |
12:51:08.45 |
-02:21:13.1 |
HIP 62602 |
21.87 |
| 2026-10-07 12:00 |
12:52:01.57 |
-02:26:46.1 |
HIP 62733 |
29.31 |
| 2026-10-08 00:00 |
12:52:54.69 |
-02:32:18.8 |
HIP 62733 |
32.41 |
| 2026-10-08 12:00 |
12:53:47.81 |
-02:37:51.1 |
HIP 62733 |
40.69 |
| 2026-10-09 00:00 |
12:54:40.94 |
-02:43:23.1 |
HIP 62733 |
51.72 |
| 2026-10-09 12:00 |
12:55:34.07 |
-02:48:54.6 |
HIP 63099 |
44.17 |
| 2026-10-10 00:00 |
12:56:27.20 |
-02:54:25.7 |
HIP 63328 |
33.15 |
| 2026-10-10 12:00 |
12:57:20.34 |
-02:59:56.5 |
HIP 63328 |
20.69 |
| 2026-10-11 00:00 |
12:58:13.48 |
-03:05:26.8 |
HIP 63328 |
13.03 |