メタデータ
| 項目 |
値 |
| Designation |
C/1941 B2 (de Kock-Paraskevopoulos) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1941-01-27T15:47:05.280000Z |
| Orbit solution date (soln_date, UTC) |
- |
| Obs used |
130 |
| 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) |
1941-02-15.0000000 |
| e |
0.99910200 |
| q (au) |
0.790033 |
| a (au) |
879.769488 |
| i (deg) |
168.203900 |
| Ω (om, deg) |
43.106900 |
| ω (w, deg) |
268.699700 |
| M (ma, deg) |
0.000693 |
等級
散乱 + 全体線形
$$
M_a = (5.838 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.838 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.846 |
| k |
0.901 |
| 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) |
| 2026-03-26 00:00 |
21:32:24.26 |
-02:28:02.2 |
HIP 106439 |
16.92 |
| 2026-03-26 12:00 |
21:32:25.01 |
-02:27:56.2 |
HIP 106439 |
16.75 |
| 2026-03-27 00:00 |
21:32:25.74 |
-02:27:50.1 |
HIP 106439 |
16.58 |
| 2026-03-27 12:00 |
21:32:26.48 |
-02:27:44.1 |
HIP 106439 |
16.42 |
| 2026-03-28 00:00 |
21:32:27.20 |
-02:27:38.0 |
HIP 106439 |
16.25 |
| 2026-03-28 12:00 |
21:32:27.92 |
-02:27:32.0 |
HIP 106439 |
16.09 |
| 2026-03-29 00:00 |
21:32:28.63 |
-02:27:26.0 |
HIP 106439 |
15.94 |
| 2026-03-29 12:00 |
21:32:29.34 |
-02:27:20.0 |
HIP 106439 |
15.78 |
| 2026-03-30 00:00 |
21:32:30.04 |
-02:27:14.0 |
HIP 106439 |
15.63 |
| 2026-03-30 12:00 |
21:32:30.73 |
-02:27:08.0 |
HIP 106439 |
15.48 |
| 2026-03-31 00:00 |
21:32:31.42 |
-02:27:02.1 |
HIP 106439 |
15.33 |
| 2026-03-31 12:00 |
21:32:32.10 |
-02:26:56.1 |
HIP 106439 |
15.19 |
| 2026-04-01 00:00 |
21:32:32.77 |
-02:26:50.2 |
HIP 106439 |
15.05 |
| 2026-04-01 12:00 |
21:32:33.43 |
-02:26:44.3 |
HIP 106439 |
14.91 |
| 2026-04-02 00:00 |
21:32:34.09 |
-02:26:38.4 |
HIP 106439 |
14.78 |
| 2026-04-02 12:00 |
21:32:34.74 |
-02:26:32.5 |
HIP 106439 |
14.64 |
| 2026-04-03 00:00 |
21:32:35.39 |
-02:26:26.6 |
HIP 106439 |
14.51 |
| 2026-04-03 12:00 |
21:32:36.03 |
-02:26:20.7 |
HIP 106439 |
14.39 |
| 2026-04-04 00:00 |
21:32:36.66 |
-02:26:14.9 |
HIP 106439 |
14.26 |
| 2026-04-04 12:00 |
21:32:37.28 |
-02:26:09.1 |
HIP 106439 |
14.14 |
| 2026-04-05 00:00 |
21:32:37.90 |
-02:26:03.3 |
HIP 106439 |
14.03 |
| 2026-04-05 12:00 |
21:32:38.51 |
-02:25:57.5 |
HIP 106439 |
13.91 |
| 2026-04-06 00:00 |
21:32:39.11 |
-02:25:51.7 |
HIP 106439 |
13.80 |
| 2026-04-06 12:00 |
21:32:39.70 |
-02:25:45.9 |
HIP 106439 |
13.69 |
| 2026-04-07 00:00 |
21:32:40.29 |
-02:25:40.2 |
HIP 106439 |
13.59 |
| 2026-04-07 12:00 |
21:32:40.87 |
-02:25:34.5 |
HIP 106439 |
13.48 |
| 2026-04-08 00:00 |
21:32:41.44 |
-02:25:28.8 |
HIP 106439 |
13.38 |
| 2026-04-08 12:00 |
21:32:42.01 |
-02:25:23.1 |
HIP 106439 |
13.29 |
| 2026-04-09 00:00 |
21:32:42.57 |
-02:25:17.4 |
HIP 106439 |
13.19 |
| 2026-04-09 12:00 |
21:32:43.12 |
-02:25:11.8 |
HIP 106439 |
13.10 |
| 2026-04-10 00:00 |
21:32:43.66 |
-02:25:06.2 |
HIP 106439 |
13.02 |
| 2026-04-10 12:00 |
21:32:44.20 |
-02:25:00.6 |
HIP 106439 |
12.93 |
| 2026-04-11 00:00 |
21:32:44.72 |
-02:24:55.0 |
HIP 106439 |
12.85 |
| 2026-04-11 12:00 |
21:32:45.24 |
-02:24:49.5 |
HIP 106439 |
12.77 |
| 2026-04-12 00:00 |
21:32:45.76 |
-02:24:43.9 |
HIP 106439 |
12.70 |
| 2026-04-12 12:00 |
21:32:46.26 |
-02:24:38.4 |
HIP 106439 |
12.63 |
| 2026-04-13 00:00 |
21:32:46.76 |
-02:24:32.9 |
HIP 106439 |
12.56 |
| 2026-04-13 12:00 |
21:32:47.25 |
-02:24:27.5 |
HIP 106439 |
12.49 |
| 2026-04-14 00:00 |
21:32:47.73 |
-02:24:22.1 |
HIP 106439 |
12.43 |
| 2026-04-14 12:00 |
21:32:48.20 |
-02:24:16.6 |
HIP 106439 |
12.37 |
| 2026-04-15 00:00 |
21:32:48.67 |
-02:24:11.3 |
HIP 106439 |
12.31 |
| 2026-04-15 12:00 |
21:32:49.12 |
-02:24:05.9 |
HIP 106439 |
12.26 |
| 2026-04-16 00:00 |
21:32:49.57 |
-02:24:00.6 |
HIP 106439 |
12.21 |