メタデータ
| 項目 |
値 |
| Designation |
C/1993 K1 (Shoemaker-Levy) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1994-02-02T01:24:00.826560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:46Z |
| Obs used |
46 |
| NEO |
- |
| M1 |
10.000 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1994-07-30.0000000 |
| e |
1.00011336 |
| q (au) |
4.849378 |
| a (au) |
-42777.594887 |
| i (deg) |
67.766845 |
| Ω (om, deg) |
30.328734 |
| ω (w, deg) |
232.460115 |
| M (ma, deg) |
0.000020 |
等級
散乱 + 全体線形
$$
M_a = (11.159 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.159 |
| n |
2.000 |
| gf |
0.998 |
| gb |
-0.538 |
| k |
0.800 |
| 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 |
01:58:12.54 |
+28:49:06.4 |
HIP 9246 |
9.37 |
| 2026-06-01 12:00 |
01:58:14.38 |
+28:49:22.8 |
HIP 9246 |
8.91 |
| 2026-06-02 00:00 |
01:58:16.21 |
+28:49:39.2 |
HIP 9246 |
8.45 |
| 2026-06-02 12:00 |
01:58:18.03 |
+28:49:55.6 |
HIP 9246 |
8.00 |
| 2026-06-03 00:00 |
01:58:19.84 |
+28:50:12.0 |
HIP 9246 |
7.55 |
| 2026-06-03 12:00 |
01:58:21.63 |
+28:50:28.4 |
HIP 9246 |
7.11 |
| 2026-06-04 00:00 |
01:58:23.41 |
+28:50:44.8 |
HIP 9246 |
6.68 |
| 2026-06-04 12:00 |
01:58:25.18 |
+28:51:01.2 |
HIP 9246 |
6.26 |
| 2026-06-05 00:00 |
01:58:26.94 |
+28:51:17.6 |
HIP 9246 |
5.85 |
| 2026-06-05 12:00 |
01:58:28.68 |
+28:51:33.9 |
HIP 9246 |
5.45 |
| 2026-06-06 00:00 |
01:58:30.41 |
+28:51:50.3 |
HIP 9246 |
5.07 |
| 2026-06-06 12:00 |
01:58:32.13 |
+28:52:06.7 |
HIP 9246 |
4.71 |
| 2026-06-07 00:00 |
01:58:33.83 |
+28:52:23.1 |
HIP 9246 |
4.37 |
| 2026-06-07 12:00 |
01:58:35.52 |
+28:52:39.5 |
HIP 9246 |
4.05 |
| 2026-06-08 00:00 |
01:58:37.20 |
+28:52:55.9 |
HIP 9246 |
3.77 |
| 2026-06-08 12:00 |
01:58:38.86 |
+28:53:12.2 |
HIP 9246 |
3.53 |
| 2026-06-09 00:00 |
01:58:40.51 |
+28:53:28.6 |
HIP 9246 |
3.33 |
| 2026-06-09 12:00 |
01:58:42.15 |
+28:53:44.9 |
HIP 9246 |
3.19 |
| 2026-06-10 00:00 |
01:58:43.77 |
+28:54:01.3 |
HIP 9246 |
3.12 |
| 2026-06-10 12:00 |
01:58:45.38 |
+28:54:17.6 |
HIP 9246 |
3.10 |
| 2026-06-11 00:00 |
01:58:46.97 |
+28:54:33.9 |
HIP 9246 |
3.15 |
| 2026-06-11 12:00 |
01:58:48.55 |
+28:54:50.2 |
HIP 9246 |
3.27 |
| 2026-06-12 00:00 |
01:58:50.12 |
+28:55:06.5 |
HIP 9246 |
3.43 |
| 2026-06-12 12:00 |
01:58:51.67 |
+28:55:22.8 |
HIP 9246 |
3.64 |
| 2026-06-13 00:00 |
01:58:53.20 |
+28:55:39.0 |
HIP 9246 |
3.89 |
| 2026-06-13 12:00 |
01:58:54.72 |
+28:55:55.3 |
HIP 9246 |
4.17 |
| 2026-06-14 00:00 |
01:58:56.23 |
+28:56:11.5 |
HIP 9246 |
4.47 |
| 2026-06-14 12:00 |
01:58:57.72 |
+28:56:27.7 |
HIP 9246 |
4.79 |
| 2026-06-15 00:00 |
01:58:59.19 |
+28:56:43.9 |
HIP 9246 |
5.12 |
| 2026-06-15 12:00 |
01:59:00.65 |
+28:57:00.1 |
HIP 9246 |
5.46 |
| 2026-06-16 00:00 |
01:59:02.10 |
+28:57:16.2 |
HIP 9246 |
5.82 |
| 2026-06-16 12:00 |
01:59:03.53 |
+28:57:32.3 |
HIP 9246 |
6.17 |
| 2026-06-17 00:00 |
01:59:04.94 |
+28:57:48.4 |
HIP 9246 |
6.54 |
| 2026-06-17 12:00 |
01:59:06.34 |
+28:58:04.5 |
HIP 9246 |
6.90 |
| 2026-06-18 00:00 |
01:59:07.72 |
+28:58:20.5 |
HIP 9246 |
7.27 |
| 2026-06-18 12:00 |
01:59:09.08 |
+28:58:36.5 |
HIP 9246 |
7.64 |
| 2026-06-19 00:00 |
01:59:10.43 |
+28:58:52.5 |
HIP 9246 |
8.01 |
| 2026-06-19 12:00 |
01:59:11.77 |
+28:59:08.5 |
HIP 9246 |
8.39 |
| 2026-06-20 00:00 |
01:59:13.08 |
+28:59:24.4 |
HIP 9246 |
8.76 |
| 2026-06-20 12:00 |
01:59:14.38 |
+28:59:40.3 |
HIP 9246 |
9.13 |
| 2026-06-21 00:00 |
01:59:15.67 |
+28:59:56.2 |
HIP 9246 |
9.50 |
| 2026-06-21 12:00 |
01:59:16.93 |
+29:00:12.0 |
HIP 9246 |
9.87 |
| 2026-06-22 00:00 |
01:59:18.19 |
+29:00:27.8 |
HIP 9246 |
10.23 |