メタデータ
| 項目 |
値 |
| Designation |
C/2023 RS61 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2028-11-30T18:35:59.766720Z |
| Orbit solution date (soln_date, UTC) |
2026-04-14T13:42:18Z |
| Obs used |
508 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
7.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2025-04-14.0000000 |
| e |
0.32775300 |
| q (au) |
7.999270 |
| a (au) |
11.899301 |
| i (deg) |
19.944260 |
| Ω (om, deg) |
347.017704 |
| ω (w, deg) |
119.384364 |
| M (ma, deg) |
328.141952 |
等級
散乱 + 全体線形
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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) |
| 2026-06-01 00:00 |
03:45:59.41 |
+37:37:44.5 |
HIP 17536 |
15.86 |
| 2026-06-01 12:00 |
03:46:19.85 |
+37:38:54.4 |
HIP 17536 |
19.22 |
| 2026-06-02 00:00 |
03:46:40.30 |
+37:40:04.5 |
HIP 17741 |
17.73 |
| 2026-06-02 12:00 |
03:47:00.73 |
+37:41:14.8 |
HIP 17741 |
13.68 |
| 2026-06-03 00:00 |
03:47:21.15 |
+37:42:25.4 |
HIP 17741 |
9.77 |
| 2026-06-03 12:00 |
03:47:41.56 |
+37:43:36.1 |
HIP 17741 |
6.24 |
| 2026-06-04 00:00 |
03:48:01.96 |
+37:44:47.0 |
HIP 17741 |
4.21 |
| 2026-06-04 12:00 |
03:48:22.36 |
+37:45:58.1 |
HIP 17741 |
5.63 |
| 2026-06-05 00:00 |
03:48:42.73 |
+37:47:09.4 |
HIP 17741 |
9.00 |
| 2026-06-05 12:00 |
03:49:03.10 |
+37:48:20.8 |
HIP 17930 |
12.59 |
| 2026-06-06 00:00 |
03:49:23.45 |
+37:49:32.5 |
HIP 17930 |
8.40 |
| 2026-06-06 12:00 |
03:49:43.79 |
+37:50:44.3 |
HIP 17930 |
4.23 |
| 2026-06-07 00:00 |
03:50:04.12 |
+37:51:56.4 |
HIP 17930 |
0.52 |
| 2026-06-07 12:00 |
03:50:24.43 |
+37:53:08.6 |
HIP 17930 |
4.21 |
| 2026-06-08 00:00 |
03:50:44.73 |
+37:54:21.0 |
HIP 17930 |
8.37 |
| 2026-06-08 12:00 |
03:51:05.01 |
+37:55:33.6 |
HIP 17930 |
12.54 |
| 2026-06-09 00:00 |
03:51:25.27 |
+37:56:46.3 |
HIP 17930 |
16.72 |
| 2026-06-09 12:00 |
03:51:45.52 |
+37:57:59.3 |
HIP 17930 |
20.89 |
| 2026-06-10 00:00 |
03:52:05.74 |
+37:59:12.4 |
HIP 17930 |
25.05 |
| 2026-06-10 12:00 |
03:52:25.95 |
+38:00:25.7 |
HIP 17930 |
29.22 |
| 2026-06-11 00:00 |
03:52:46.14 |
+38:01:39.2 |
HIP 17930 |
33.38 |
| 2026-06-11 12:00 |
03:53:06.31 |
+38:02:52.8 |
HIP 18240 |
30.95 |
| 2026-06-12 00:00 |
03:53:26.46 |
+38:04:06.6 |
HIP 18358 |
28.47 |
| 2026-06-12 12:00 |
03:53:46.59 |
+38:05:20.6 |
HIP 18358 |
24.46 |
| 2026-06-13 00:00 |
03:54:06.70 |
+38:06:34.8 |
HIP 18358 |
20.52 |
| 2026-06-13 12:00 |
03:54:26.78 |
+38:07:49.1 |
HIP 18358 |
16.67 |
| 2026-06-14 00:00 |
03:54:46.84 |
+38:09:03.6 |
HIP 18358 |
13.00 |
| 2026-06-14 12:00 |
03:55:06.88 |
+38:10:18.3 |
HIP 18358 |
9.71 |
| 2026-06-15 00:00 |
03:55:26.89 |
+38:11:33.1 |
HIP 18358 |
7.33 |
| 2026-06-15 12:00 |
03:55:46.88 |
+38:12:48.1 |
HIP 18358 |
6.85 |
| 2026-06-16 00:00 |
03:56:06.84 |
+38:14:03.2 |
HIP 18358 |
8.60 |
| 2026-06-16 12:00 |
03:56:26.77 |
+38:15:18.5 |
HIP 18358 |
11.61 |
| 2026-06-17 00:00 |
03:56:46.67 |
+38:16:34.0 |
HIP 18358 |
15.13 |
| 2026-06-17 12:00 |
03:57:06.55 |
+38:17:49.6 |
HIP 18358 |
18.88 |
| 2026-06-18 00:00 |
03:57:26.39 |
+38:19:05.3 |
HIP 18358 |
22.75 |
| 2026-06-18 12:00 |
03:57:46.21 |
+38:20:21.2 |
HIP 18358 |
26.67 |
| 2026-06-19 00:00 |
03:58:06.00 |
+38:21:37.3 |
HIP 18628 |
27.13 |
| 2026-06-19 12:00 |
03:58:25.75 |
+38:22:53.5 |
HIP 18628 |
26.66 |
| 2026-06-20 00:00 |
03:58:45.47 |
+38:24:09.9 |
HIP 18565 |
26.45 |
| 2026-06-20 12:00 |
03:59:05.16 |
+38:25:26.4 |
HIP 18657 |
24.74 |
| 2026-06-21 00:00 |
03:59:24.82 |
+38:26:43.0 |
HIP 18657 |
22.70 |
| 2026-06-21 12:00 |
03:59:44.44 |
+38:27:59.8 |
HIP 18657 |
21.24 |
| 2026-06-22 00:00 |
04:00:04.03 |
+38:29:16.7 |
HIP 18789 |
20.43 |