メタデータ
| 項目 |
値 |
| Designation |
C/2023 RS61 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2028-11-30T18:41:00.818880Z |
| Orbit solution date (soln_date, UTC) |
2026-06-09T11:12:27Z |
| Obs used |
511 |
| 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) |
2025-04-15.0000000 |
| e |
0.32775444 |
| q (au) |
7.999258 |
| a (au) |
11.899310 |
| i (deg) |
19.944262 |
| Ω (om, deg) |
347.017716 |
| ω (w, deg) |
119.384607 |
| M (ma, deg) |
328.165914 |
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) |
| 2026-07-29 00:00 |
04:21:52.51 |
+40:09:30.7 |
HIP 20395 |
13.54 |
| 2026-07-29 12:00 |
04:22:07.62 |
+40:10:55.3 |
HIP 20395 |
14.93 |
| 2026-07-30 00:00 |
04:22:22.64 |
+40:12:19.9 |
HIP 20395 |
16.83 |
| 2026-07-30 12:00 |
04:22:37.57 |
+40:13:44.7 |
HIP 20395 |
19.07 |
| 2026-07-31 00:00 |
04:22:52.41 |
+40:15:09.5 |
HIP 20395 |
21.55 |
| 2026-07-31 12:00 |
04:23:07.17 |
+40:16:34.3 |
HIP 20395 |
24.18 |
| 2026-08-01 00:00 |
04:23:21.84 |
+40:17:59.2 |
HIP 20395 |
26.91 |
| 2026-08-01 12:00 |
04:23:36.42 |
+40:19:24.2 |
HIP 20395 |
29.71 |
| 2026-08-02 00:00 |
04:23:50.91 |
+40:20:49.2 |
HIP 20395 |
32.56 |
| 2026-08-02 12:00 |
04:24:05.30 |
+40:22:14.2 |
HIP 20775 |
34.05 |
| 2026-08-03 00:00 |
04:24:19.61 |
+40:23:39.4 |
HIP 20775 |
31.57 |
| 2026-08-03 12:00 |
04:24:33.82 |
+40:25:04.5 |
HIP 20775 |
29.22 |
| 2026-08-04 00:00 |
04:24:47.93 |
+40:26:29.7 |
HIP 20775 |
27.03 |
| 2026-08-04 12:00 |
04:25:01.96 |
+40:27:55.0 |
HIP 20775 |
25.04 |
| 2026-08-05 00:00 |
04:25:15.88 |
+40:29:20.3 |
HIP 20775 |
23.29 |
| 2026-08-05 12:00 |
04:25:29.71 |
+40:30:45.7 |
HIP 20775 |
21.84 |
| 2026-08-06 00:00 |
04:25:43.45 |
+40:32:11.1 |
HIP 20775 |
20.73 |
| 2026-08-06 12:00 |
04:25:57.08 |
+40:33:36.5 |
HIP 20775 |
20.03 |
| 2026-08-07 00:00 |
04:26:10.62 |
+40:35:02.0 |
HIP 20775 |
19.75 |
| 2026-08-07 12:00 |
04:26:24.06 |
+40:36:27.6 |
HIP 20775 |
19.92 |
| 2026-08-08 00:00 |
04:26:37.40 |
+40:37:53.1 |
HIP 20775 |
20.52 |
| 2026-08-08 12:00 |
04:26:50.64 |
+40:39:18.7 |
HIP 20775 |
21.50 |
| 2026-08-09 00:00 |
04:27:03.77 |
+40:40:44.4 |
HIP 20775 |
22.81 |
| 2026-08-09 12:00 |
04:27:16.80 |
+40:42:10.0 |
HIP 20775 |
24.39 |
| 2026-08-10 00:00 |
04:27:29.73 |
+40:43:35.7 |
HIP 20744 |
25.40 |
| 2026-08-10 12:00 |
04:27:42.55 |
+40:45:01.5 |
HIP 20744 |
25.07 |
| 2026-08-11 00:00 |
04:27:55.27 |
+40:46:27.2 |
HIP 20744 |
25.03 |
| 2026-08-11 12:00 |
04:28:07.88 |
+40:47:53.0 |
HIP 20744 |
25.29 |
| 2026-08-12 00:00 |
04:28:20.39 |
+40:49:18.8 |
HIP 20744 |
25.83 |
| 2026-08-12 12:00 |
04:28:32.78 |
+40:50:44.6 |
HIP 20744 |
26.64 |
| 2026-08-13 00:00 |
04:28:45.07 |
+40:52:10.5 |
HIP 20744 |
27.67 |
| 2026-08-13 12:00 |
04:28:57.25 |
+40:53:36.3 |
HIP 20744 |
28.90 |
| 2026-08-14 00:00 |
04:29:09.32 |
+40:55:02.2 |
HIP 20744 |
30.31 |
| 2026-08-14 12:00 |
04:29:21.28 |
+40:56:28.0 |
HIP 20744 |
31.86 |
| 2026-08-15 00:00 |
04:29:33.12 |
+40:57:53.9 |
HIP 20744 |
33.53 |
| 2026-08-15 12:00 |
04:29:44.85 |
+40:59:19.8 |
HIP 20744 |
35.29 |
| 2026-08-16 00:00 |
04:29:56.47 |
+41:00:45.7 |
HIP 21217 |
36.55 |
| 2026-08-16 12:00 |
04:30:07.98 |
+41:02:11.6 |
HIP 21217 |
34.83 |
| 2026-08-17 00:00 |
04:30:19.37 |
+41:03:37.5 |
HIP 21217 |
33.25 |
| 2026-08-17 12:00 |
04:30:30.65 |
+41:05:03.4 |
HIP 21217 |
31.82 |
| 2026-08-18 00:00 |
04:30:41.81 |
+41:06:29.3 |
HIP 21217 |
30.56 |
| 2026-08-18 12:00 |
04:30:52.85 |
+41:07:55.2 |
HIP 21217 |
29.48 |
| 2026-08-19 00:00 |
04:31:03.78 |
+41:09:21.0 |
HIP 21217 |
28.61 |