C/1941 B2 (de Kock-Paraskevopoulos)
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) |
| 2026-02-03 00:00 |
21:30:46.77 |
-02:37:48.6 |
HIP 106011 |
36.96 |
| 2026-02-03 12:00 |
21:30:47.81 |
-02:37:43.9 |
HIP 106011 |
37.22 |
| 2026-02-04 00:00 |
21:30:48.85 |
-02:37:39.2 |
HIP 106011 |
37.48 |
| 2026-02-04 12:00 |
21:30:49.89 |
-02:37:34.4 |
HIP 106011 |
37.74 |
| 2026-02-05 00:00 |
21:30:50.93 |
-02:37:29.6 |
HIP 106011 |
38.00 |
| 2026-02-05 12:00 |
21:30:51.97 |
-02:37:24.8 |
HIP 106011 |
38.25 |
| 2026-02-06 00:00 |
21:30:53.02 |
-02:37:20.0 |
HIP 106011 |
38.51 |
| 2026-02-06 12:00 |
21:30:54.06 |
-02:37:15.1 |
HIP 106011 |
38.77 |
| 2026-02-07 00:00 |
21:30:55.10 |
-02:37:10.2 |
HIP 106011 |
39.03 |
| 2026-02-07 12:00 |
21:30:56.15 |
-02:37:05.2 |
HIP 106011 |
39.29 |
| 2026-02-08 00:00 |
21:30:57.19 |
-02:37:00.3 |
HIP 106439 |
39.07 |
| 2026-02-08 12:00 |
21:30:58.24 |
-02:36:55.3 |
HIP 106439 |
38.80 |
| 2026-02-09 00:00 |
21:30:59.28 |
-02:36:50.2 |
HIP 106439 |
38.53 |
| 2026-02-09 12:00 |
21:31:00.33 |
-02:36:45.1 |
HIP 106439 |
38.26 |
| 2026-02-10 00:00 |
21:31:01.37 |
-02:36:40.0 |
HIP 106439 |
37.99 |
| 2026-02-10 12:00 |
21:31:02.42 |
-02:36:34.9 |
HIP 106439 |
37.72 |
| 2026-02-11 00:00 |
21:31:03.46 |
-02:36:29.8 |
HIP 106439 |
37.45 |
| 2026-02-11 12:00 |
21:31:04.51 |
-02:36:24.6 |
HIP 106439 |
37.17 |
| 2026-02-12 00:00 |
21:31:05.55 |
-02:36:19.3 |
HIP 106439 |
36.90 |
| 2026-02-12 12:00 |
21:31:06.60 |
-02:36:14.1 |
HIP 106439 |
36.63 |
| 2026-02-13 00:00 |
21:31:07.64 |
-02:36:08.8 |
HIP 106439 |
36.36 |
| 2026-02-13 12:00 |
21:31:08.68 |
-02:36:03.5 |
HIP 106439 |
36.09 |
| 2026-02-14 00:00 |
21:31:09.72 |
-02:35:58.2 |
HIP 106439 |
35.82 |
| 2026-02-14 12:00 |
21:31:10.77 |
-02:35:52.8 |
HIP 106439 |
35.55 |
| 2026-02-15 00:00 |
21:31:11.81 |
-02:35:47.4 |
HIP 106439 |
35.28 |
| 2026-02-15 12:00 |
21:31:12.85 |
-02:35:42.0 |
HIP 106439 |
35.01 |
| 2026-02-16 00:00 |
21:31:13.89 |
-02:35:36.6 |
HIP 106439 |
34.74 |
| 2026-02-16 12:00 |
21:31:14.92 |
-02:35:31.1 |
HIP 106439 |
34.47 |
| 2026-02-17 00:00 |
21:31:15.96 |
-02:35:25.6 |
HIP 106439 |
34.20 |
| 2026-02-17 12:00 |
21:31:16.99 |
-02:35:20.1 |
HIP 106439 |
33.93 |
| 2026-02-18 00:00 |
21:31:18.03 |
-02:35:14.6 |
HIP 106439 |
33.66 |
| 2026-02-18 12:00 |
21:31:19.06 |
-02:35:09.0 |
HIP 106439 |
33.39 |
| 2026-02-19 00:00 |
21:31:20.09 |
-02:35:03.4 |
HIP 106439 |
33.12 |
| 2026-02-19 12:00 |
21:31:21.12 |
-02:34:57.8 |
HIP 106439 |
32.85 |
| 2026-02-20 00:00 |
21:31:22.15 |
-02:34:52.2 |
HIP 106439 |
32.59 |
| 2026-02-20 12:00 |
21:31:23.18 |
-02:34:46.5 |
HIP 106439 |
32.32 |
| 2026-02-21 00:00 |
21:31:24.20 |
-02:34:40.9 |
HIP 106439 |
32.05 |
| 2026-02-21 12:00 |
21:31:25.22 |
-02:34:35.2 |
HIP 106439 |
31.79 |
| 2026-02-22 00:00 |
21:31:26.24 |
-02:34:29.5 |
HIP 106439 |
31.52 |
| 2026-02-22 12:00 |
21:31:27.26 |
-02:34:23.7 |
HIP 106439 |
31.26 |
| 2026-02-23 00:00 |
21:31:28.28 |
-02:34:18.0 |
HIP 106439 |
30.99 |
| 2026-02-23 12:00 |
21:31:29.29 |
-02:34:12.2 |
HIP 106439 |
30.73 |
| 2026-02-24 00:00 |
21:31:30.31 |
-02:34:06.4 |
HIP 106439 |
30.47 |