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) |
| 2026-05-12 00:00 |
22:26:59.37 |
+21:48:14.9 |
HIP 110791 |
4.94 |
| 2026-05-12 12:00 |
22:26:59.63 |
+21:48:24.6 |
HIP 110791 |
4.85 |
| 2026-05-13 00:00 |
22:26:59.89 |
+21:48:34.4 |
HIP 110791 |
4.76 |
| 2026-05-13 12:00 |
22:27:00.14 |
+21:48:44.1 |
HIP 110791 |
4.68 |
| 2026-05-14 00:00 |
22:27:00.38 |
+21:48:53.8 |
HIP 110791 |
4.60 |
| 2026-05-14 12:00 |
22:27:00.61 |
+21:49:03.4 |
HIP 110791 |
4.53 |
| 2026-05-15 00:00 |
22:27:00.83 |
+21:49:13.1 |
HIP 110791 |
4.45 |
| 2026-05-15 12:00 |
22:27:01.05 |
+21:49:22.7 |
HIP 110791 |
4.39 |
| 2026-05-16 00:00 |
22:27:01.25 |
+21:49:32.2 |
HIP 110791 |
4.32 |
| 2026-05-16 12:00 |
22:27:01.44 |
+21:49:41.8 |
HIP 110791 |
4.27 |
| 2026-05-17 00:00 |
22:27:01.63 |
+21:49:51.3 |
HIP 110791 |
4.21 |
| 2026-05-17 12:00 |
22:27:01.81 |
+21:50:00.8 |
HIP 110791 |
4.16 |
| 2026-05-18 00:00 |
22:27:01.97 |
+21:50:10.3 |
HIP 110791 |
4.11 |
| 2026-05-18 12:00 |
22:27:02.13 |
+21:50:19.7 |
HIP 110791 |
4.07 |
| 2026-05-19 00:00 |
22:27:02.28 |
+21:50:29.1 |
HIP 110791 |
4.03 |
| 2026-05-19 12:00 |
22:27:02.42 |
+21:50:38.5 |
HIP 110791 |
4.00 |
| 2026-05-20 00:00 |
22:27:02.55 |
+21:50:47.8 |
HIP 110791 |
3.97 |
| 2026-05-20 12:00 |
22:27:02.67 |
+21:50:57.1 |
HIP 110791 |
3.95 |
| 2026-05-21 00:00 |
22:27:02.78 |
+21:51:06.3 |
HIP 110791 |
3.93 |
| 2026-05-21 12:00 |
22:27:02.88 |
+21:51:15.6 |
HIP 110791 |
3.91 |
| 2026-05-22 00:00 |
22:27:02.98 |
+21:51:24.7 |
HIP 110791 |
3.90 |
| 2026-05-22 12:00 |
22:27:03.06 |
+21:51:33.9 |
HIP 110791 |
3.89 |
| 2026-05-23 00:00 |
22:27:03.14 |
+21:51:43.0 |
HIP 110791 |
3.89 |
| 2026-05-23 12:00 |
22:27:03.20 |
+21:51:52.1 |
HIP 110791 |
3.89 |
| 2026-05-24 00:00 |
22:27:03.26 |
+21:52:01.1 |
HIP 110791 |
3.89 |
| 2026-05-24 12:00 |
22:27:03.30 |
+21:52:10.1 |
HIP 110791 |
3.90 |
| 2026-05-25 00:00 |
22:27:03.34 |
+21:52:19.1 |
HIP 110791 |
3.91 |
| 2026-05-25 12:00 |
22:27:03.37 |
+21:52:28.0 |
HIP 110791 |
3.92 |
| 2026-05-26 00:00 |
22:27:03.39 |
+21:52:36.9 |
HIP 110791 |
3.94 |
| 2026-05-26 12:00 |
22:27:03.40 |
+21:52:45.7 |
HIP 110791 |
3.96 |
| 2026-05-27 00:00 |
22:27:03.40 |
+21:52:54.5 |
HIP 110791 |
3.99 |
| 2026-05-27 12:00 |
22:27:03.39 |
+21:53:03.2 |
HIP 110791 |
4.02 |
| 2026-05-28 00:00 |
22:27:03.38 |
+21:53:11.9 |
HIP 110791 |
4.05 |
| 2026-05-28 12:00 |
22:27:03.35 |
+21:53:20.6 |
HIP 110791 |
4.08 |
| 2026-05-29 00:00 |
22:27:03.32 |
+21:53:29.2 |
HIP 110791 |
4.11 |
| 2026-05-29 12:00 |
22:27:03.27 |
+21:53:37.8 |
HIP 110791 |
4.15 |
| 2026-05-30 00:00 |
22:27:03.22 |
+21:53:46.3 |
HIP 110791 |
4.19 |
| 2026-05-30 12:00 |
22:27:03.15 |
+21:53:54.8 |
HIP 110791 |
4.23 |
| 2026-05-31 00:00 |
22:27:03.08 |
+21:54:03.2 |
HIP 110791 |
4.28 |
| 2026-05-31 12:00 |
22:27:03.00 |
+21:54:11.6 |
HIP 110791 |
4.32 |
| 2026-06-01 00:00 |
22:27:02.91 |
+21:54:20.0 |
HIP 110791 |
4.37 |
| 2026-06-01 12:00 |
22:27:02.81 |
+21:54:28.3 |
HIP 110791 |
4.42 |
| 2026-06-02 00:00 |
22:27:02.70 |
+21:54:36.5 |
HIP 110791 |
4.47 |