メタデータ
| 項目 |
値 |
| Designation |
C/1947 F1 (Rondanina-Bester) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1947-05-20T23:09:22.504320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:07Z |
| Obs used |
15 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1947-04-18.0000000 |
| e |
0.99727691 |
| q (au) |
0.559812 |
| a (au) |
205.579925 |
| i (deg) |
39.291590 |
| Ω (om, deg) |
353.903996 |
| ω (w, deg) |
303.758245 |
| M (ma, deg) |
359.988977 |
等級
散乱 + 全体線形
$$
M_a = (7.611 + 3.727\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.611 |
| n |
3.727 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.950 |
| δ90 |
1.000 |
| 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) |
| 2026-06-01 00:00 |
08:32:55.08 |
+54:25:41.4 |
HIP 41810 |
12.82 |
| 2026-06-01 12:00 |
08:32:56.20 |
+54:25:30.7 |
HIP 41810 |
13.01 |
| 2026-06-02 00:00 |
08:32:57.34 |
+54:25:20.0 |
HIP 41810 |
13.20 |
| 2026-06-02 12:00 |
08:32:58.50 |
+54:25:09.4 |
HIP 41810 |
13.40 |
| 2026-06-03 00:00 |
08:32:59.66 |
+54:24:58.7 |
HIP 41810 |
13.60 |
| 2026-06-03 12:00 |
08:33:00.84 |
+54:24:48.2 |
HIP 41810 |
13.81 |
| 2026-06-04 00:00 |
08:33:02.04 |
+54:24:37.6 |
HIP 41810 |
14.01 |
| 2026-06-04 12:00 |
08:33:03.24 |
+54:24:27.1 |
HIP 41810 |
14.22 |
| 2026-06-05 00:00 |
08:33:04.46 |
+54:24:16.6 |
HIP 41810 |
14.44 |
| 2026-06-05 12:00 |
08:33:05.69 |
+54:24:06.1 |
HIP 41810 |
14.65 |
| 2026-06-06 00:00 |
08:33:06.94 |
+54:23:55.6 |
HIP 41810 |
14.87 |
| 2026-06-06 12:00 |
08:33:08.20 |
+54:23:45.2 |
HIP 41810 |
15.09 |
| 2026-06-07 00:00 |
08:33:09.47 |
+54:23:34.9 |
HIP 41810 |
15.32 |
| 2026-06-07 12:00 |
08:33:10.75 |
+54:23:24.5 |
HIP 41810 |
15.54 |
| 2026-06-08 00:00 |
08:33:12.04 |
+54:23:14.2 |
HIP 41810 |
15.77 |
| 2026-06-08 12:00 |
08:33:13.35 |
+54:23:03.9 |
HIP 41810 |
16.00 |
| 2026-06-09 00:00 |
08:33:14.67 |
+54:22:53.7 |
HIP 41810 |
16.24 |
| 2026-06-09 12:00 |
08:33:16.00 |
+54:22:43.5 |
HIP 41810 |
16.47 |
| 2026-06-10 00:00 |
08:33:17.35 |
+54:22:33.3 |
HIP 41810 |
16.71 |
| 2026-06-10 12:00 |
08:33:18.70 |
+54:22:23.2 |
HIP 41810 |
16.95 |
| 2026-06-11 00:00 |
08:33:20.07 |
+54:22:13.1 |
HIP 41810 |
17.19 |
| 2026-06-11 12:00 |
08:33:21.45 |
+54:22:03.0 |
HIP 41810 |
17.44 |
| 2026-06-12 00:00 |
08:33:22.84 |
+54:21:53.0 |
HIP 41810 |
17.68 |
| 2026-06-12 12:00 |
08:33:24.24 |
+54:21:43.0 |
HIP 41810 |
17.93 |
| 2026-06-13 00:00 |
08:33:25.66 |
+54:21:33.1 |
HIP 41810 |
18.18 |
| 2026-06-13 12:00 |
08:33:27.08 |
+54:21:23.2 |
HIP 41810 |
18.43 |
| 2026-06-14 00:00 |
08:33:28.52 |
+54:21:13.4 |
HIP 41810 |
18.68 |
| 2026-06-14 12:00 |
08:33:29.97 |
+54:21:03.5 |
HIP 41810 |
18.94 |
| 2026-06-15 00:00 |
08:33:31.43 |
+54:20:53.8 |
HIP 41810 |
19.20 |
| 2026-06-15 12:00 |
08:33:32.90 |
+54:20:44.1 |
HIP 41810 |
19.45 |
| 2026-06-16 00:00 |
08:33:34.38 |
+54:20:34.4 |
HIP 41810 |
19.71 |
| 2026-06-16 12:00 |
08:33:35.87 |
+54:20:24.8 |
HIP 41810 |
19.97 |
| 2026-06-17 00:00 |
08:33:37.37 |
+54:20:15.2 |
HIP 41810 |
20.24 |
| 2026-06-17 12:00 |
08:33:38.89 |
+54:20:05.6 |
HIP 41810 |
20.50 |
| 2026-06-18 00:00 |
08:33:40.41 |
+54:19:56.1 |
HIP 41810 |
20.77 |
| 2026-06-18 12:00 |
08:33:41.94 |
+54:19:46.7 |
HIP 41810 |
21.03 |
| 2026-06-19 00:00 |
08:33:43.49 |
+54:19:37.3 |
HIP 41810 |
21.30 |
| 2026-06-19 12:00 |
08:33:45.04 |
+54:19:28.0 |
HIP 41810 |
21.57 |
| 2026-06-20 00:00 |
08:33:46.61 |
+54:19:18.7 |
HIP 41810 |
21.84 |
| 2026-06-20 12:00 |
08:33:48.18 |
+54:19:09.4 |
HIP 41810 |
22.11 |
| 2026-06-21 00:00 |
08:33:49.76 |
+54:19:00.2 |
HIP 41810 |
22.38 |
| 2026-06-21 12:00 |
08:33:51.35 |
+54:18:51.1 |
HIP 41810 |
22.66 |
| 2026-06-22 00:00 |
08:33:52.96 |
+54:18:42.0 |
HIP 41810 |
22.93 |