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) |
| 2026-09-20 00:00 |
21:29:41.42 |
-02:30:56.5 |
HIP 106011 |
21.42 |
| 2026-09-20 12:00 |
21:29:40.58 |
-02:31:02.7 |
HIP 106011 |
21.19 |
| 2026-09-21 00:00 |
21:29:39.74 |
-02:31:09.0 |
HIP 106011 |
20.96 |
| 2026-09-21 12:00 |
21:29:38.91 |
-02:31:15.3 |
HIP 106011 |
20.73 |
| 2026-09-22 00:00 |
21:29:38.08 |
-02:31:21.5 |
HIP 106011 |
20.51 |
| 2026-09-22 12:00 |
21:29:37.26 |
-02:31:27.8 |
HIP 106011 |
20.28 |
| 2026-09-23 00:00 |
21:29:36.45 |
-02:31:34.0 |
HIP 106011 |
20.06 |
| 2026-09-23 12:00 |
21:29:35.64 |
-02:31:40.3 |
HIP 106011 |
19.84 |
| 2026-09-24 00:00 |
21:29:34.84 |
-02:31:46.5 |
HIP 106011 |
19.62 |
| 2026-09-24 12:00 |
21:29:34.04 |
-02:31:52.7 |
HIP 106011 |
19.40 |
| 2026-09-25 00:00 |
21:29:33.25 |
-02:31:58.9 |
HIP 106011 |
19.18 |
| 2026-09-25 12:00 |
21:29:32.47 |
-02:32:05.1 |
HIP 106011 |
18.97 |
| 2026-09-26 00:00 |
21:29:31.69 |
-02:32:11.4 |
HIP 106011 |
18.75 |
| 2026-09-26 12:00 |
21:29:30.92 |
-02:32:17.5 |
HIP 106011 |
18.54 |
| 2026-09-27 00:00 |
21:29:30.15 |
-02:32:23.7 |
HIP 106011 |
18.33 |
| 2026-09-27 12:00 |
21:29:29.39 |
-02:32:29.9 |
HIP 106011 |
18.12 |
| 2026-09-28 00:00 |
21:29:28.64 |
-02:32:36.1 |
HIP 106011 |
17.91 |
| 2026-09-28 12:00 |
21:29:27.89 |
-02:32:42.2 |
HIP 106011 |
17.71 |
| 2026-09-29 00:00 |
21:29:27.15 |
-02:32:48.4 |
HIP 106011 |
17.51 |
| 2026-09-29 12:00 |
21:29:26.42 |
-02:32:54.5 |
HIP 106011 |
17.30 |
| 2026-09-30 00:00 |
21:29:25.69 |
-02:33:00.7 |
HIP 106011 |
17.11 |
| 2026-09-30 12:00 |
21:29:24.97 |
-02:33:06.8 |
HIP 106011 |
16.91 |
| 2026-10-01 00:00 |
21:29:24.25 |
-02:33:12.9 |
HIP 106011 |
16.71 |
| 2026-10-01 12:00 |
21:29:23.55 |
-02:33:19.0 |
HIP 106011 |
16.52 |
| 2026-10-02 00:00 |
21:29:22.84 |
-02:33:25.1 |
HIP 106011 |
16.33 |
| 2026-10-02 12:00 |
21:29:22.15 |
-02:33:31.1 |
HIP 106011 |
16.14 |
| 2026-10-03 00:00 |
21:29:21.46 |
-02:33:37.2 |
HIP 106011 |
15.95 |
| 2026-10-03 12:00 |
21:29:20.78 |
-02:33:43.2 |
HIP 106011 |
15.76 |
| 2026-10-04 00:00 |
21:29:20.11 |
-02:33:49.2 |
HIP 106011 |
15.58 |
| 2026-10-04 12:00 |
21:29:19.44 |
-02:33:55.3 |
HIP 106011 |
15.40 |
| 2026-10-05 00:00 |
21:29:18.79 |
-02:34:01.2 |
HIP 106011 |
15.22 |
| 2026-10-05 12:00 |
21:29:18.13 |
-02:34:07.2 |
HIP 106011 |
15.04 |
| 2026-10-06 00:00 |
21:29:17.49 |
-02:34:13.2 |
HIP 106011 |
14.86 |
| 2026-10-06 12:00 |
21:29:16.85 |
-02:34:19.1 |
HIP 106011 |
14.69 |
| 2026-10-07 00:00 |
21:29:16.22 |
-02:34:25.1 |
HIP 106011 |
14.52 |
| 2026-10-07 12:00 |
21:29:15.60 |
-02:34:31.0 |
HIP 106011 |
14.35 |
| 2026-10-08 00:00 |
21:29:14.99 |
-02:34:36.9 |
HIP 106011 |
14.18 |
| 2026-10-08 12:00 |
21:29:14.38 |
-02:34:42.7 |
HIP 106011 |
14.02 |
| 2026-10-09 00:00 |
21:29:13.78 |
-02:34:48.6 |
HIP 106011 |
13.86 |
| 2026-10-09 12:00 |
21:29:13.19 |
-02:34:54.4 |
HIP 106011 |
13.70 |
| 2026-10-10 00:00 |
21:29:12.60 |
-02:35:00.2 |
HIP 106011 |
13.54 |
| 2026-10-10 12:00 |
21:29:12.02 |
-02:35:06.0 |
HIP 106011 |
13.38 |
| 2026-10-11 00:00 |
21:29:11.45 |
-02:35:11.8 |
HIP 106011 |
13.23 |