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) |
| 2026-05-12 00:00 |
21:33:01.27 |
-02:20:08.4 |
HIP 106461 |
11.09 |
| 2026-05-12 12:00 |
21:33:01.27 |
-02:20:04.9 |
HIP 106461 |
11.10 |
| 2026-05-13 00:00 |
21:33:01.25 |
-02:20:01.5 |
HIP 106461 |
11.12 |
| 2026-05-13 12:00 |
21:33:01.23 |
-02:19:58.2 |
HIP 106461 |
11.13 |
| 2026-05-14 00:00 |
21:33:01.20 |
-02:19:54.8 |
HIP 106461 |
11.15 |
| 2026-05-14 12:00 |
21:33:01.16 |
-02:19:51.6 |
HIP 106461 |
11.17 |
| 2026-05-15 00:00 |
21:33:01.11 |
-02:19:48.3 |
HIP 106461 |
11.20 |
| 2026-05-15 12:00 |
21:33:01.05 |
-02:19:45.1 |
HIP 106461 |
11.22 |
| 2026-05-16 00:00 |
21:33:00.98 |
-02:19:42.0 |
HIP 106461 |
11.25 |
| 2026-05-16 12:00 |
21:33:00.90 |
-02:19:38.9 |
HIP 106461 |
11.28 |
| 2026-05-17 00:00 |
21:33:00.82 |
-02:19:35.8 |
HIP 106461 |
11.31 |
| 2026-05-17 12:00 |
21:33:00.72 |
-02:19:32.8 |
HIP 106461 |
11.35 |
| 2026-05-18 00:00 |
21:33:00.62 |
-02:19:29.9 |
HIP 106461 |
11.38 |
| 2026-05-18 12:00 |
21:33:00.51 |
-02:19:27.0 |
HIP 106461 |
11.42 |
| 2026-05-19 00:00 |
21:33:00.39 |
-02:19:24.1 |
HIP 106461 |
11.46 |
| 2026-05-19 12:00 |
21:33:00.26 |
-02:19:21.3 |
HIP 106461 |
11.51 |
| 2026-05-20 00:00 |
21:33:00.12 |
-02:19:18.5 |
HIP 106461 |
11.55 |
| 2026-05-20 12:00 |
21:32:59.97 |
-02:19:15.8 |
HIP 106461 |
11.60 |
| 2026-05-21 00:00 |
21:32:59.81 |
-02:19:13.1 |
HIP 106461 |
11.65 |
| 2026-05-21 12:00 |
21:32:59.65 |
-02:19:10.5 |
HIP 106461 |
11.70 |
| 2026-05-22 00:00 |
21:32:59.48 |
-02:19:07.9 |
HIP 106461 |
11.75 |
| 2026-05-22 12:00 |
21:32:59.29 |
-02:19:05.3 |
HIP 106461 |
11.81 |
| 2026-05-23 00:00 |
21:32:59.10 |
-02:19:02.9 |
HIP 106461 |
11.86 |
| 2026-05-23 12:00 |
21:32:58.90 |
-02:19:00.4 |
HIP 106461 |
11.92 |
| 2026-05-24 00:00 |
21:32:58.69 |
-02:18:58.0 |
HIP 106461 |
11.98 |
| 2026-05-24 12:00 |
21:32:58.48 |
-02:18:55.7 |
HIP 106461 |
12.05 |
| 2026-05-25 00:00 |
21:32:58.25 |
-02:18:53.4 |
HIP 106461 |
12.11 |
| 2026-05-25 12:00 |
21:32:58.02 |
-02:18:51.1 |
HIP 106461 |
12.18 |
| 2026-05-26 00:00 |
21:32:57.77 |
-02:18:48.9 |
HIP 106461 |
12.25 |
| 2026-05-26 12:00 |
21:32:57.52 |
-02:18:46.8 |
HIP 106461 |
12.32 |
| 2026-05-27 00:00 |
21:32:57.26 |
-02:18:44.7 |
HIP 106461 |
12.39 |
| 2026-05-27 12:00 |
21:32:56.99 |
-02:18:42.6 |
HIP 106461 |
12.46 |
| 2026-05-28 00:00 |
21:32:56.72 |
-02:18:40.6 |
HIP 106461 |
12.54 |
| 2026-05-28 12:00 |
21:32:56.43 |
-02:18:38.7 |
HIP 106461 |
12.62 |
| 2026-05-29 00:00 |
21:32:56.14 |
-02:18:36.8 |
HIP 106461 |
12.69 |
| 2026-05-29 12:00 |
21:32:55.83 |
-02:18:34.9 |
HIP 106461 |
12.78 |
| 2026-05-30 00:00 |
21:32:55.52 |
-02:18:33.1 |
HIP 106461 |
12.86 |
| 2026-05-30 12:00 |
21:32:55.20 |
-02:18:31.3 |
HIP 106461 |
12.94 |
| 2026-05-31 00:00 |
21:32:54.88 |
-02:18:29.6 |
HIP 106461 |
13.03 |
| 2026-05-31 12:00 |
21:32:54.54 |
-02:18:28.0 |
HIP 106461 |
13.12 |
| 2026-06-01 00:00 |
21:32:54.20 |
-02:18:26.4 |
HIP 106461 |
13.21 |
| 2026-06-01 12:00 |
21:32:53.84 |
-02:18:24.8 |
HIP 106461 |
13.30 |
| 2026-06-02 00:00 |
21:32:53.48 |
-02:18:23.3 |
HIP 106461 |
13.39 |