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) |
| 2026-03-26 00:00 |
18:57:39.49 |
-39:40:01.8 |
HIP 93074 |
9.42 |
| 2026-03-26 12:00 |
18:57:39.73 |
-39:40:06.4 |
HIP 93074 |
9.35 |
| 2026-03-27 00:00 |
18:57:39.95 |
-39:40:10.9 |
HIP 93074 |
9.28 |
| 2026-03-27 12:00 |
18:57:40.16 |
-39:40:15.5 |
HIP 93074 |
9.21 |
| 2026-03-28 00:00 |
18:57:40.36 |
-39:40:20.2 |
HIP 93074 |
9.13 |
| 2026-03-28 12:00 |
18:57:40.55 |
-39:40:24.8 |
HIP 93074 |
9.06 |
| 2026-03-29 00:00 |
18:57:40.73 |
-39:40:29.5 |
HIP 93074 |
8.99 |
| 2026-03-29 12:00 |
18:57:40.89 |
-39:40:34.1 |
HIP 93074 |
8.92 |
| 2026-03-30 00:00 |
18:57:41.04 |
-39:40:38.8 |
HIP 93074 |
8.84 |
| 2026-03-30 12:00 |
18:57:41.17 |
-39:40:43.5 |
HIP 93074 |
8.77 |
| 2026-03-31 00:00 |
18:57:41.29 |
-39:40:48.3 |
HIP 93074 |
8.69 |
| 2026-03-31 12:00 |
18:57:41.40 |
-39:40:53.0 |
HIP 93074 |
8.62 |
| 2026-04-01 00:00 |
18:57:41.50 |
-39:40:57.8 |
HIP 93074 |
8.54 |
| 2026-04-01 12:00 |
18:57:41.59 |
-39:41:02.6 |
HIP 93074 |
8.47 |
| 2026-04-02 00:00 |
18:57:41.66 |
-39:41:07.4 |
HIP 93074 |
8.39 |
| 2026-04-02 12:00 |
18:57:41.72 |
-39:41:12.2 |
HIP 93074 |
8.31 |
| 2026-04-03 00:00 |
18:57:41.76 |
-39:41:17.0 |
HIP 93074 |
8.24 |
| 2026-04-03 12:00 |
18:57:41.80 |
-39:41:21.8 |
HIP 93074 |
8.16 |
| 2026-04-04 00:00 |
18:57:41.82 |
-39:41:26.7 |
HIP 93074 |
8.08 |
| 2026-04-04 12:00 |
18:57:41.82 |
-39:41:31.6 |
HIP 93074 |
8.00 |
| 2026-04-05 00:00 |
18:57:41.82 |
-39:41:36.4 |
HIP 93074 |
7.92 |
| 2026-04-05 12:00 |
18:57:41.80 |
-39:41:41.3 |
HIP 93074 |
7.84 |
| 2026-04-06 00:00 |
18:57:41.77 |
-39:41:46.3 |
HIP 93074 |
7.76 |
| 2026-04-06 12:00 |
18:57:41.73 |
-39:41:51.2 |
HIP 93074 |
7.67 |
| 2026-04-07 00:00 |
18:57:41.67 |
-39:41:56.1 |
HIP 93074 |
7.59 |
| 2026-04-07 12:00 |
18:57:41.60 |
-39:42:01.1 |
HIP 93074 |
7.51 |
| 2026-04-08 00:00 |
18:57:41.52 |
-39:42:06.0 |
HIP 93074 |
7.42 |
| 2026-04-08 12:00 |
18:57:41.42 |
-39:42:11.0 |
HIP 93074 |
7.34 |
| 2026-04-09 00:00 |
18:57:41.31 |
-39:42:16.0 |
HIP 93074 |
7.25 |
| 2026-04-09 12:00 |
18:57:41.19 |
-39:42:21.0 |
HIP 93074 |
7.17 |
| 2026-04-10 00:00 |
18:57:41.06 |
-39:42:26.0 |
HIP 93074 |
7.08 |
| 2026-04-10 12:00 |
18:57:40.91 |
-39:42:31.0 |
HIP 93074 |
6.99 |
| 2026-04-11 00:00 |
18:57:40.75 |
-39:42:36.0 |
HIP 93074 |
6.91 |
| 2026-04-11 12:00 |
18:57:40.58 |
-39:42:41.1 |
HIP 93074 |
6.82 |
| 2026-04-12 00:00 |
18:57:40.40 |
-39:42:46.1 |
HIP 93074 |
6.73 |
| 2026-04-12 12:00 |
18:57:40.20 |
-39:42:51.2 |
HIP 93074 |
6.64 |
| 2026-04-13 00:00 |
18:57:39.99 |
-39:42:56.2 |
HIP 93074 |
6.55 |
| 2026-04-13 12:00 |
18:57:39.76 |
-39:43:01.3 |
HIP 93074 |
6.46 |
| 2026-04-14 00:00 |
18:57:39.53 |
-39:43:06.4 |
HIP 93074 |
6.37 |
| 2026-04-14 12:00 |
18:57:39.28 |
-39:43:11.5 |
HIP 93074 |
6.28 |
| 2026-04-15 00:00 |
18:57:39.02 |
-39:43:16.5 |
HIP 93074 |
6.19 |
| 2026-04-15 12:00 |
18:57:38.74 |
-39:43:21.6 |
HIP 93074 |
6.09 |
| 2026-04-16 00:00 |
18:57:38.46 |
-39:43:26.7 |
HIP 93074 |
6.00 |