C/1947 F1 (Rondanina-Bester)
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) |
| 2026-02-03 00:00 |
08:35:38.12 |
+54:53:06.7 |
HIP 42126 |
10.64 |
| 2026-02-03 12:00 |
08:35:36.07 |
+54:53:08.9 |
HIP 42126 |
10.51 |
| 2026-02-04 00:00 |
08:35:34.02 |
+54:53:11.1 |
HIP 42126 |
10.39 |
| 2026-02-04 12:00 |
08:35:31.97 |
+54:53:13.1 |
HIP 42126 |
10.28 |
| 2026-02-05 00:00 |
08:35:29.92 |
+54:53:15.0 |
HIP 42126 |
10.18 |
| 2026-02-05 12:00 |
08:35:27.88 |
+54:53:16.9 |
HIP 42126 |
10.09 |
| 2026-02-06 00:00 |
08:35:25.84 |
+54:53:18.6 |
HIP 42126 |
10.01 |
| 2026-02-06 12:00 |
08:35:23.81 |
+54:53:20.2 |
HIP 42126 |
9.94 |
| 2026-02-07 00:00 |
08:35:21.77 |
+54:53:21.7 |
HIP 42126 |
9.88 |
| 2026-02-07 12:00 |
08:35:19.75 |
+54:53:23.1 |
HIP 42126 |
9.83 |
| 2026-02-08 00:00 |
08:35:17.72 |
+54:53:24.5 |
HIP 42126 |
9.79 |
| 2026-02-08 12:00 |
08:35:15.70 |
+54:53:25.7 |
HIP 42126 |
9.75 |
| 2026-02-09 00:00 |
08:35:13.68 |
+54:53:26.8 |
HIP 42126 |
9.73 |
| 2026-02-09 12:00 |
08:35:11.67 |
+54:53:27.8 |
HIP 42126 |
9.72 |
| 2026-02-10 00:00 |
08:35:09.66 |
+54:53:28.7 |
HIP 42126 |
9.72 |
| 2026-02-10 12:00 |
08:35:07.66 |
+54:53:29.5 |
HIP 42126 |
9.73 |
| 2026-02-11 00:00 |
08:35:05.66 |
+54:53:30.2 |
HIP 42126 |
9.75 |
| 2026-02-11 12:00 |
08:35:03.67 |
+54:53:30.8 |
HIP 42126 |
9.78 |
| 2026-02-12 00:00 |
08:35:01.68 |
+54:53:31.3 |
HIP 42126 |
9.82 |
| 2026-02-12 12:00 |
08:34:59.69 |
+54:53:31.7 |
HIP 42126 |
9.87 |
| 2026-02-13 00:00 |
08:34:57.72 |
+54:53:32.0 |
HIP 42126 |
9.93 |
| 2026-02-13 12:00 |
08:34:55.74 |
+54:53:32.1 |
HIP 42126 |
10.00 |
| 2026-02-14 00:00 |
08:34:53.78 |
+54:53:32.2 |
HIP 42126 |
10.08 |
| 2026-02-14 12:00 |
08:34:51.82 |
+54:53:32.2 |
HIP 42126 |
10.16 |
| 2026-02-15 00:00 |
08:34:49.86 |
+54:53:32.1 |
HIP 42126 |
10.25 |
| 2026-02-15 12:00 |
08:34:47.91 |
+54:53:31.8 |
HIP 42126 |
10.36 |
| 2026-02-16 00:00 |
08:34:45.97 |
+54:53:31.5 |
HIP 42126 |
10.47 |
| 2026-02-16 12:00 |
08:34:44.04 |
+54:53:31.1 |
HIP 42126 |
10.58 |
| 2026-02-17 00:00 |
08:34:42.11 |
+54:53:30.5 |
HIP 42126 |
10.71 |
| 2026-02-17 12:00 |
08:34:40.19 |
+54:53:29.9 |
HIP 42126 |
10.84 |
| 2026-02-18 00:00 |
08:34:38.27 |
+54:53:29.1 |
HIP 42126 |
10.97 |
| 2026-02-18 12:00 |
08:34:36.36 |
+54:53:28.3 |
HIP 42126 |
11.12 |
| 2026-02-19 00:00 |
08:34:34.46 |
+54:53:27.3 |
HIP 42126 |
11.27 |
| 2026-02-19 12:00 |
08:34:32.57 |
+54:53:26.3 |
HIP 42126 |
11.42 |
| 2026-02-20 00:00 |
08:34:30.69 |
+54:53:25.1 |
HIP 42126 |
11.58 |
| 2026-02-20 12:00 |
08:34:28.81 |
+54:53:23.9 |
HIP 42126 |
11.75 |
| 2026-02-21 00:00 |
08:34:26.94 |
+54:53:22.5 |
HIP 42126 |
11.92 |
| 2026-02-21 12:00 |
08:34:25.08 |
+54:53:21.1 |
HIP 42126 |
12.09 |
| 2026-02-22 00:00 |
08:34:23.23 |
+54:53:19.5 |
HIP 42126 |
12.27 |
| 2026-02-22 12:00 |
08:34:21.39 |
+54:53:17.8 |
HIP 42126 |
12.45 |
| 2026-02-23 00:00 |
08:34:19.55 |
+54:53:16.1 |
HIP 42126 |
12.63 |
| 2026-02-23 12:00 |
08:34:17.72 |
+54:53:14.2 |
HIP 42126 |
12.82 |
| 2026-02-24 00:00 |
08:34:15.91 |
+54:53:12.2 |
HIP 42126 |
13.01 |