メタデータ
| 項目 |
値 |
| Designation |
C/1942 C1 (Whipple-Bernasconi-Kulin) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1942-04-30T19:52:28.176960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:05Z |
| Obs used |
8 |
| 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) |
1942-03-29.0000000 |
| e |
1.00101873 |
| q (au) |
1.445344 |
| a (au) |
-1418.765903 |
| i (deg) |
79.454034 |
| Ω (om, deg) |
340.934457 |
| ω (w, deg) |
223.411736 |
| M (ma, deg) |
-0.000605 |
等級
散乱 + 全体線形
$$
M_a = (4.871 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.871 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.520 |
| k |
0.800 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
22:24:03.35 |
+21:55:28.8 |
HIP 110559 |
11.46 |
| 2026-09-20 12:00 |
22:24:02.34 |
+21:55:20.9 |
HIP 110559 |
11.52 |
| 2026-09-21 00:00 |
22:24:01.32 |
+21:55:12.9 |
HIP 110559 |
11.58 |
| 2026-09-21 12:00 |
22:24:00.32 |
+21:55:04.9 |
HIP 110559 |
11.65 |
| 2026-09-22 00:00 |
22:23:59.31 |
+21:54:56.8 |
HIP 110559 |
11.73 |
| 2026-09-22 12:00 |
22:23:58.31 |
+21:54:48.7 |
HIP 110559 |
11.81 |
| 2026-09-23 00:00 |
22:23:57.32 |
+21:54:40.5 |
HIP 110559 |
11.91 |
| 2026-09-23 12:00 |
22:23:56.32 |
+21:54:32.3 |
HIP 110559 |
12.00 |
| 2026-09-24 00:00 |
22:23:55.34 |
+21:54:24.0 |
HIP 110559 |
12.10 |
| 2026-09-24 12:00 |
22:23:54.35 |
+21:54:15.7 |
HIP 110559 |
12.21 |
| 2026-09-25 00:00 |
22:23:53.38 |
+21:54:07.3 |
HIP 110559 |
12.33 |
| 2026-09-25 12:00 |
22:23:52.40 |
+21:53:58.9 |
HIP 110559 |
12.45 |
| 2026-09-26 00:00 |
22:23:51.43 |
+21:53:50.4 |
HIP 110559 |
12.57 |
| 2026-09-26 12:00 |
22:23:50.47 |
+21:53:41.9 |
HIP 110559 |
12.70 |
| 2026-09-27 00:00 |
22:23:49.51 |
+21:53:33.4 |
HIP 110559 |
12.84 |
| 2026-09-27 12:00 |
22:23:48.55 |
+21:53:24.8 |
HIP 110559 |
12.98 |
| 2026-09-28 00:00 |
22:23:47.60 |
+21:53:16.2 |
HIP 110559 |
13.12 |
| 2026-09-28 12:00 |
22:23:46.65 |
+21:53:07.5 |
HIP 110559 |
13.27 |
| 2026-09-29 00:00 |
22:23:45.71 |
+21:52:58.8 |
HIP 110559 |
13.42 |
| 2026-09-29 12:00 |
22:23:44.78 |
+21:52:50.0 |
HIP 110559 |
13.58 |
| 2026-09-30 00:00 |
22:23:43.85 |
+21:52:41.2 |
HIP 110559 |
13.74 |
| 2026-09-30 12:00 |
22:23:42.92 |
+21:52:32.4 |
HIP 110559 |
13.90 |
| 2026-10-01 00:00 |
22:23:42.00 |
+21:52:23.5 |
HIP 110559 |
14.07 |
| 2026-10-01 12:00 |
22:23:41.09 |
+21:52:14.6 |
HIP 110559 |
14.24 |
| 2026-10-02 00:00 |
22:23:40.18 |
+21:52:05.6 |
HIP 110559 |
14.42 |
| 2026-10-02 12:00 |
22:23:39.27 |
+21:51:56.7 |
HIP 110559 |
14.59 |
| 2026-10-03 00:00 |
22:23:38.37 |
+21:51:47.6 |
HIP 110559 |
14.77 |
| 2026-10-03 12:00 |
22:23:37.48 |
+21:51:38.6 |
HIP 110559 |
14.95 |
| 2026-10-04 00:00 |
22:23:36.59 |
+21:51:29.5 |
HIP 110559 |
15.14 |
| 2026-10-04 12:00 |
22:23:35.71 |
+21:51:20.3 |
HIP 110559 |
15.33 |
| 2026-10-05 00:00 |
22:23:34.83 |
+21:51:11.2 |
HIP 110559 |
15.51 |
| 2026-10-05 12:00 |
22:23:33.96 |
+21:51:02.0 |
HIP 110559 |
15.71 |
| 2026-10-06 00:00 |
22:23:33.10 |
+21:50:52.7 |
HIP 110559 |
15.90 |
| 2026-10-06 12:00 |
22:23:32.24 |
+21:50:43.5 |
HIP 110559 |
16.09 |
| 2026-10-07 00:00 |
22:23:31.39 |
+21:50:34.2 |
HIP 110559 |
16.29 |
| 2026-10-07 12:00 |
22:23:30.54 |
+21:50:24.8 |
HIP 110559 |
16.49 |
| 2026-10-08 00:00 |
22:23:29.70 |
+21:50:15.5 |
HIP 110559 |
16.69 |
| 2026-10-08 12:00 |
22:23:28.87 |
+21:50:06.1 |
HIP 110559 |
16.89 |
| 2026-10-09 00:00 |
22:23:28.04 |
+21:49:56.7 |
HIP 110559 |
17.09 |
| 2026-10-09 12:00 |
22:23:27.22 |
+21:49:47.3 |
HIP 110559 |
17.30 |
| 2026-10-10 00:00 |
22:23:26.41 |
+21:49:37.8 |
HIP 110559 |
17.50 |
| 2026-10-10 12:00 |
22:23:25.60 |
+21:49:28.3 |
HIP 110559 |
17.71 |
| 2026-10-11 00:00 |
22:23:24.80 |
+21:49:18.8 |
HIP 110559 |
17.92 |