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) |
| 2026-07-29 00:00 |
22:25:56.23 |
+22:03:01.2 |
HIP 110791 |
15.92 |
| 2026-07-29 12:00 |
22:25:55.27 |
+22:03:01.1 |
HIP 110791 |
16.08 |
| 2026-07-30 00:00 |
22:25:54.30 |
+22:03:00.9 |
HIP 110791 |
16.24 |
| 2026-07-30 12:00 |
22:25:53.32 |
+22:03:00.6 |
HIP 110791 |
16.41 |
| 2026-07-31 00:00 |
22:25:52.34 |
+22:03:00.3 |
HIP 110791 |
16.58 |
| 2026-07-31 12:00 |
22:25:51.36 |
+22:02:59.9 |
HIP 110791 |
16.75 |
| 2026-08-01 00:00 |
22:25:50.37 |
+22:02:59.3 |
HIP 110791 |
16.92 |
| 2026-08-01 12:00 |
22:25:49.38 |
+22:02:58.7 |
HIP 110791 |
17.09 |
| 2026-08-02 00:00 |
22:25:48.38 |
+22:02:58.0 |
HIP 110791 |
17.26 |
| 2026-08-02 12:00 |
22:25:47.38 |
+22:02:57.3 |
HIP 110791 |
17.43 |
| 2026-08-03 00:00 |
22:25:46.38 |
+22:02:56.4 |
HIP 110791 |
17.61 |
| 2026-08-03 12:00 |
22:25:45.37 |
+22:02:55.5 |
HIP 110791 |
17.79 |
| 2026-08-04 00:00 |
22:25:44.36 |
+22:02:54.5 |
HIP 110791 |
17.96 |
| 2026-08-04 12:00 |
22:25:43.35 |
+22:02:53.4 |
HIP 110791 |
18.14 |
| 2026-08-05 00:00 |
22:25:42.33 |
+22:02:52.2 |
HIP 110791 |
18.32 |
| 2026-08-05 12:00 |
22:25:41.31 |
+22:02:50.9 |
HIP 110791 |
18.50 |
| 2026-08-06 00:00 |
22:25:40.28 |
+22:02:49.5 |
HIP 110791 |
18.68 |
| 2026-08-06 12:00 |
22:25:39.25 |
+22:02:48.1 |
HIP 110791 |
18.87 |
| 2026-08-07 00:00 |
22:25:38.22 |
+22:02:46.5 |
HIP 110791 |
19.05 |
| 2026-08-07 12:00 |
22:25:37.18 |
+22:02:44.9 |
HIP 110791 |
19.24 |
| 2026-08-08 00:00 |
22:25:36.14 |
+22:02:43.2 |
HIP 110791 |
19.42 |
| 2026-08-08 12:00 |
22:25:35.10 |
+22:02:41.4 |
HIP 110791 |
19.61 |
| 2026-08-09 00:00 |
22:25:34.05 |
+22:02:39.6 |
HIP 110791 |
19.80 |
| 2026-08-09 12:00 |
22:25:33.00 |
+22:02:37.6 |
HIP 110791 |
19.99 |
| 2026-08-10 00:00 |
22:25:31.95 |
+22:02:35.6 |
HIP 110791 |
20.18 |
| 2026-08-10 12:00 |
22:25:30.90 |
+22:02:33.5 |
HIP 110791 |
20.37 |
| 2026-08-11 00:00 |
22:25:29.84 |
+22:02:31.3 |
HIP 110791 |
20.56 |
| 2026-08-11 12:00 |
22:25:28.78 |
+22:02:29.0 |
HIP 110791 |
20.76 |
| 2026-08-12 00:00 |
22:25:27.72 |
+22:02:26.6 |
HIP 110791 |
20.95 |
| 2026-08-12 12:00 |
22:25:26.65 |
+22:02:24.2 |
HIP 110791 |
21.15 |
| 2026-08-13 00:00 |
22:25:25.59 |
+22:02:21.6 |
HIP 110791 |
21.35 |
| 2026-08-13 12:00 |
22:25:24.51 |
+22:02:19.0 |
HIP 110791 |
21.54 |
| 2026-08-14 00:00 |
22:25:23.44 |
+22:02:16.3 |
HIP 110791 |
21.74 |
| 2026-08-14 12:00 |
22:25:22.37 |
+22:02:13.5 |
HIP 110791 |
21.94 |
| 2026-08-15 00:00 |
22:25:21.29 |
+22:02:10.6 |
HIP 110559 |
21.98 |
| 2026-08-15 12:00 |
22:25:20.21 |
+22:02:07.7 |
HIP 110559 |
21.75 |
| 2026-08-16 00:00 |
22:25:19.13 |
+22:02:04.7 |
HIP 110559 |
21.51 |
| 2026-08-16 12:00 |
22:25:18.05 |
+22:02:01.5 |
HIP 110559 |
21.28 |
| 2026-08-17 00:00 |
22:25:16.96 |
+22:01:58.4 |
HIP 110559 |
21.04 |
| 2026-08-17 12:00 |
22:25:15.88 |
+22:01:55.1 |
HIP 110559 |
20.81 |
| 2026-08-18 00:00 |
22:25:14.79 |
+22:01:51.7 |
HIP 110559 |
20.57 |
| 2026-08-18 12:00 |
22:25:13.70 |
+22:01:48.3 |
HIP 110559 |
20.34 |
| 2026-08-19 00:00 |
22:25:12.61 |
+22:01:44.8 |
HIP 110559 |
20.11 |