メタデータ
| 項目 |
値 |
| Designation |
C/1939 B1 (Kozik-Peltier) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1939-02-06T20:30:18.336960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:05Z |
| Obs used |
53 |
| NEO |
- |
| M1 |
9.600 |
| K1 |
10.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1939-02-08.0000000 |
| e |
0.99545124 |
| q (au) |
0.716485 |
| a (au) |
157.511966 |
| i (deg) |
63.526389 |
| Ω (om, deg) |
289.609052 |
| ω (w, deg) |
169.024376 |
| M (ma, deg) |
0.000571 |
等級
散乱 + 全体線形
$$
M_a = (8.530 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.530 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-1.000 |
| k |
0.800 |
| δ90 |
1.000 |
| 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 |
18:57:07.00 |
-39:47:49.6 |
HIP 93074 |
5.49 |
| 2026-05-12 12:00 |
18:57:06.10 |
-39:47:54.4 |
HIP 93074 |
5.63 |
| 2026-05-13 00:00 |
18:57:05.19 |
-39:47:59.2 |
HIP 93074 |
5.78 |
| 2026-05-13 12:00 |
18:57:04.26 |
-39:48:04.0 |
HIP 93074 |
5.94 |
| 2026-05-14 00:00 |
18:57:03.33 |
-39:48:08.8 |
HIP 93074 |
6.09 |
| 2026-05-14 12:00 |
18:57:02.39 |
-39:48:13.5 |
HIP 93074 |
6.26 |
| 2026-05-15 00:00 |
18:57:01.44 |
-39:48:18.3 |
HIP 93074 |
6.42 |
| 2026-05-15 12:00 |
18:57:00.48 |
-39:48:23.0 |
HIP 93074 |
6.59 |
| 2026-05-16 00:00 |
18:56:59.51 |
-39:48:27.7 |
HIP 93074 |
6.76 |
| 2026-05-16 12:00 |
18:56:58.53 |
-39:48:32.4 |
HIP 93074 |
6.94 |
| 2026-05-17 00:00 |
18:56:57.54 |
-39:48:37.1 |
HIP 93074 |
7.12 |
| 2026-05-17 12:00 |
18:56:56.54 |
-39:48:41.7 |
HIP 93074 |
7.30 |
| 2026-05-18 00:00 |
18:56:55.53 |
-39:48:46.3 |
HIP 93074 |
7.49 |
| 2026-05-18 12:00 |
18:56:54.51 |
-39:48:50.9 |
HIP 93074 |
7.68 |
| 2026-05-19 00:00 |
18:56:53.49 |
-39:48:55.5 |
HIP 93074 |
7.87 |
| 2026-05-19 12:00 |
18:56:52.45 |
-39:49:00.1 |
HIP 93074 |
8.06 |
| 2026-05-20 00:00 |
18:56:51.40 |
-39:49:04.7 |
HIP 93074 |
8.26 |
| 2026-05-20 12:00 |
18:56:50.35 |
-39:49:09.2 |
HIP 93074 |
8.46 |
| 2026-05-21 00:00 |
18:56:49.29 |
-39:49:13.7 |
HIP 93074 |
8.66 |
| 2026-05-21 12:00 |
18:56:48.21 |
-39:49:18.2 |
HIP 93074 |
8.87 |
| 2026-05-22 00:00 |
18:56:47.13 |
-39:49:22.6 |
HIP 93074 |
9.07 |
| 2026-05-22 12:00 |
18:56:46.04 |
-39:49:27.1 |
HIP 93074 |
9.28 |
| 2026-05-23 00:00 |
18:56:44.94 |
-39:49:31.5 |
HIP 93074 |
9.50 |
| 2026-05-23 12:00 |
18:56:43.84 |
-39:49:35.9 |
HIP 93074 |
9.71 |
| 2026-05-24 00:00 |
18:56:42.72 |
-39:49:40.2 |
HIP 93074 |
9.92 |
| 2026-05-24 12:00 |
18:56:41.60 |
-39:49:44.6 |
HIP 92942 |
9.94 |
| 2026-05-25 00:00 |
18:56:40.46 |
-39:49:48.9 |
HIP 92942 |
9.75 |
| 2026-05-25 12:00 |
18:56:39.32 |
-39:49:53.2 |
HIP 92942 |
9.57 |
| 2026-05-26 00:00 |
18:56:38.17 |
-39:49:57.4 |
HIP 92942 |
9.38 |
| 2026-05-26 12:00 |
18:56:37.02 |
-39:50:01.7 |
HIP 92942 |
9.20 |
| 2026-05-27 00:00 |
18:56:35.85 |
-39:50:05.9 |
HIP 92942 |
9.01 |
| 2026-05-27 12:00 |
18:56:34.68 |
-39:50:10.1 |
HIP 92942 |
8.83 |
| 2026-05-28 00:00 |
18:56:33.50 |
-39:50:14.2 |
HIP 92942 |
8.65 |
| 2026-05-28 12:00 |
18:56:32.32 |
-39:50:18.4 |
HIP 92942 |
8.47 |
| 2026-05-29 00:00 |
18:56:31.12 |
-39:50:22.5 |
HIP 92942 |
8.30 |
| 2026-05-29 12:00 |
18:56:29.92 |
-39:50:26.6 |
HIP 92942 |
8.13 |
| 2026-05-30 00:00 |
18:56:28.71 |
-39:50:30.6 |
HIP 92942 |
7.96 |
| 2026-05-30 12:00 |
18:56:27.49 |
-39:50:34.6 |
HIP 92942 |
7.80 |
| 2026-05-31 00:00 |
18:56:26.27 |
-39:50:38.6 |
HIP 92942 |
7.64 |
| 2026-05-31 12:00 |
18:56:25.04 |
-39:50:42.6 |
HIP 92942 |
7.48 |
| 2026-06-01 00:00 |
18:56:23.80 |
-39:50:46.5 |
HIP 92942 |
7.33 |
| 2026-06-01 12:00 |
18:56:22.55 |
-39:50:50.4 |
HIP 92942 |
7.19 |
| 2026-06-02 00:00 |
18:56:21.30 |
-39:50:54.3 |
HIP 92942 |
7.05 |