メタデータ
| 項目 |
値 |
| Designation |
C/1941 K1 (van Gent) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1941-09-03T04:25:14.880000Z |
| Orbit solution date (soln_date, UTC) |
- |
| Obs used |
318 |
| 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) |
1941-09-03.0000000 |
| e |
1.00024300 |
| q (au) |
0.874789 |
| a (au) |
-3599.954732 |
| i (deg) |
94.516500 |
| Ω (om, deg) |
257.559800 |
| ω (w, deg) |
85.321900 |
| M (ma, deg) |
-0.000001 |
等級
散乱 + 全体線形
$$
M_a = (6.150 + 3.887\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.150 |
| n |
3.887 |
| gf |
1.000 |
| gb |
-0.946 |
| k |
1.000 |
| 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) |
| 2026-06-01 00:00 |
05:10:17.70 |
-51:28:28.2 |
HIP 24098 |
10.68 |
| 2026-06-01 12:00 |
05:10:19.41 |
-51:28:25.7 |
HIP 24098 |
10.58 |
| 2026-06-02 00:00 |
05:10:21.13 |
-51:28:23.3 |
HIP 24098 |
10.48 |
| 2026-06-02 12:00 |
05:10:22.84 |
-51:28:21.1 |
HIP 24098 |
10.40 |
| 2026-06-03 00:00 |
05:10:24.56 |
-51:28:19.0 |
HIP 24098 |
10.32 |
| 2026-06-03 12:00 |
05:10:26.28 |
-51:28:17.0 |
HIP 24098 |
10.25 |
| 2026-06-04 00:00 |
05:10:28.00 |
-51:28:15.1 |
HIP 24098 |
10.19 |
| 2026-06-04 12:00 |
05:10:29.73 |
-51:28:13.4 |
HIP 24098 |
10.14 |
| 2026-06-05 00:00 |
05:10:31.45 |
-51:28:11.8 |
HIP 24098 |
10.10 |
| 2026-06-05 12:00 |
05:10:33.18 |
-51:28:10.3 |
HIP 24098 |
10.07 |
| 2026-06-06 00:00 |
05:10:34.90 |
-51:28:09.0 |
HIP 24098 |
10.05 |
| 2026-06-06 12:00 |
05:10:36.63 |
-51:28:07.8 |
HIP 24098 |
10.03 |
| 2026-06-07 00:00 |
05:10:38.36 |
-51:28:06.7 |
HIP 24098 |
10.03 |
| 2026-06-07 12:00 |
05:10:40.09 |
-51:28:05.7 |
HIP 24098 |
10.04 |
| 2026-06-08 00:00 |
05:10:41.82 |
-51:28:04.9 |
HIP 24098 |
10.05 |
| 2026-06-08 12:00 |
05:10:43.55 |
-51:28:04.2 |
HIP 24098 |
10.08 |
| 2026-06-09 00:00 |
05:10:45.28 |
-51:28:03.7 |
HIP 24098 |
10.11 |
| 2026-06-09 12:00 |
05:10:47.01 |
-51:28:03.2 |
HIP 24098 |
10.15 |
| 2026-06-10 00:00 |
05:10:48.74 |
-51:28:02.9 |
HIP 24098 |
10.21 |
| 2026-06-10 12:00 |
05:10:50.47 |
-51:28:02.8 |
HIP 24098 |
10.27 |
| 2026-06-11 00:00 |
05:10:52.21 |
-51:28:02.7 |
HIP 24098 |
10.34 |
| 2026-06-11 12:00 |
05:10:53.94 |
-51:28:02.8 |
HIP 24098 |
10.42 |
| 2026-06-12 00:00 |
05:10:55.67 |
-51:28:03.0 |
HIP 24098 |
10.50 |
| 2026-06-12 12:00 |
05:10:57.40 |
-51:28:03.4 |
HIP 24098 |
10.60 |
| 2026-06-13 00:00 |
05:10:59.13 |
-51:28:03.9 |
HIP 24098 |
10.70 |
| 2026-06-13 12:00 |
05:11:00.86 |
-51:28:04.5 |
HIP 24098 |
10.81 |
| 2026-06-14 00:00 |
05:11:02.58 |
-51:28:05.3 |
HIP 24098 |
10.93 |
| 2026-06-14 12:00 |
05:11:04.31 |
-51:28:06.2 |
HIP 24098 |
11.06 |
| 2026-06-15 00:00 |
05:11:06.04 |
-51:28:07.2 |
HIP 24098 |
11.19 |
| 2026-06-15 12:00 |
05:11:07.76 |
-51:28:08.3 |
HIP 24098 |
11.33 |
| 2026-06-16 00:00 |
05:11:09.49 |
-51:28:09.6 |
HIP 24098 |
11.48 |
| 2026-06-16 12:00 |
05:11:11.21 |
-51:28:11.0 |
HIP 24098 |
11.63 |
| 2026-06-17 00:00 |
05:11:12.93 |
-51:28:12.6 |
HIP 24253 |
11.77 |
| 2026-06-17 12:00 |
05:11:14.65 |
-51:28:14.2 |
HIP 24253 |
11.52 |
| 2026-06-18 00:00 |
05:11:16.36 |
-51:28:16.0 |
HIP 24253 |
11.26 |
| 2026-06-18 12:00 |
05:11:18.08 |
-51:28:18.0 |
HIP 24253 |
11.01 |
| 2026-06-19 00:00 |
05:11:19.79 |
-51:28:20.0 |
HIP 24253 |
10.75 |
| 2026-06-19 12:00 |
05:11:21.50 |
-51:28:22.2 |
HIP 24253 |
10.50 |
| 2026-06-20 00:00 |
05:11:23.21 |
-51:28:24.5 |
HIP 24253 |
10.24 |
| 2026-06-20 12:00 |
05:11:24.92 |
-51:28:27.0 |
HIP 24253 |
9.98 |
| 2026-06-21 00:00 |
05:11:26.62 |
-51:28:29.6 |
HIP 24253 |
9.73 |
| 2026-06-21 12:00 |
05:11:28.32 |
-51:28:32.3 |
HIP 24253 |
9.47 |
| 2026-06-22 00:00 |
05:11:30.02 |
-51:28:35.1 |
HIP 24253 |
9.22 |