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 |
1.000 |
| 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) |
| 2026-05-12 00:00 |
01:56:50.35 |
+28:38:25.6 |
HIP 9166 |
17.14 |
| 2026-05-12 12:00 |
01:56:52.57 |
+28:38:41.0 |
HIP 9166 |
16.81 |
| 2026-05-13 00:00 |
01:56:54.78 |
+28:38:56.5 |
HIP 9166 |
16.50 |
| 2026-05-13 12:00 |
01:56:56.99 |
+28:39:12.0 |
HIP 9166 |
16.20 |
| 2026-05-14 00:00 |
01:56:59.19 |
+28:39:27.6 |
HIP 9166 |
15.91 |
| 2026-05-14 12:00 |
01:57:01.38 |
+28:39:43.2 |
HIP 9166 |
15.64 |
| 2026-05-15 00:00 |
01:57:03.57 |
+28:39:58.8 |
HIP 9166 |
15.39 |
| 2026-05-15 12:00 |
01:57:05.75 |
+28:40:14.5 |
HIP 9166 |
15.15 |
| 2026-05-16 00:00 |
01:57:07.92 |
+28:40:30.2 |
HIP 9166 |
14.93 |
| 2026-05-16 12:00 |
01:57:10.08 |
+28:40:46.0 |
HIP 9166 |
14.73 |
| 2026-05-17 00:00 |
01:57:12.24 |
+28:41:01.8 |
HIP 9166 |
14.55 |
| 2026-05-17 12:00 |
01:57:14.38 |
+28:41:17.6 |
HIP 9166 |
14.39 |
| 2026-05-18 00:00 |
01:57:16.52 |
+28:41:33.4 |
HIP 9166 |
14.25 |
| 2026-05-18 12:00 |
01:57:18.66 |
+28:41:49.3 |
HIP 9166 |
14.13 |
| 2026-05-19 00:00 |
01:57:20.78 |
+28:42:05.2 |
HIP 9166 |
14.04 |
| 2026-05-19 12:00 |
01:57:22.89 |
+28:42:21.2 |
HIP 9166 |
13.96 |
| 2026-05-20 00:00 |
01:57:25.00 |
+28:42:37.1 |
HIP 9166 |
13.90 |
| 2026-05-20 12:00 |
01:57:27.09 |
+28:42:53.1 |
HIP 9166 |
13.87 |
| 2026-05-21 00:00 |
01:57:29.18 |
+28:43:09.1 |
HIP 9166 |
13.86 |
| 2026-05-21 12:00 |
01:57:31.26 |
+28:43:25.2 |
HIP 9166 |
13.87 |
| 2026-05-22 00:00 |
01:57:33.33 |
+28:43:41.3 |
HIP 9166 |
13.90 |
| 2026-05-22 12:00 |
01:57:35.39 |
+28:43:57.4 |
HIP 9166 |
13.95 |
| 2026-05-23 00:00 |
01:57:37.44 |
+28:44:13.5 |
HIP 9166 |
14.03 |
| 2026-05-23 12:00 |
01:57:39.48 |
+28:44:29.6 |
HIP 9166 |
14.12 |
| 2026-05-24 00:00 |
01:57:41.51 |
+28:44:45.8 |
HIP 9166 |
14.23 |
| 2026-05-24 12:00 |
01:57:43.53 |
+28:45:02.0 |
HIP 9166 |
14.36 |
| 2026-05-25 00:00 |
01:57:45.54 |
+28:45:18.2 |
HIP 9166 |
14.51 |
| 2026-05-25 12:00 |
01:57:47.54 |
+28:45:34.4 |
HIP 9166 |
14.68 |
| 2026-05-26 00:00 |
01:57:49.52 |
+28:45:50.6 |
HIP 9166 |
14.86 |
| 2026-05-26 12:00 |
01:57:51.50 |
+28:46:06.9 |
HIP 9246 |
14.72 |
| 2026-05-27 00:00 |
01:57:53.47 |
+28:46:23.1 |
HIP 9246 |
14.22 |
| 2026-05-27 12:00 |
01:57:55.43 |
+28:46:39.4 |
HIP 9246 |
13.72 |
| 2026-05-28 00:00 |
01:57:57.37 |
+28:46:55.7 |
HIP 9246 |
13.22 |
| 2026-05-28 12:00 |
01:57:59.31 |
+28:47:12.0 |
HIP 9246 |
12.73 |
| 2026-05-29 00:00 |
01:58:01.23 |
+28:47:28.3 |
HIP 9246 |
12.24 |
| 2026-05-29 12:00 |
01:58:03.15 |
+28:47:44.7 |
HIP 9246 |
11.75 |
| 2026-05-30 00:00 |
01:58:05.05 |
+28:48:01.0 |
HIP 9246 |
11.27 |
| 2026-05-30 12:00 |
01:58:06.94 |
+28:48:17.4 |
HIP 9246 |
10.79 |
| 2026-05-31 00:00 |
01:58:08.82 |
+28:48:33.7 |
HIP 9246 |
10.31 |
| 2026-05-31 12:00 |
01:58:10.68 |
+28:48:50.1 |
HIP 9246 |
9.84 |
| 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 |