C/1993 K1 (Shoemaker-Levy)
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) |
| 2026-02-03 00:00 |
01:50:44.86 |
+28:16:44.9 |
HIP 8571 |
20.84 |
| 2026-02-03 12:00 |
01:50:45.45 |
+28:16:40.0 |
HIP 8571 |
20.78 |
| 2026-02-04 00:00 |
01:50:46.06 |
+28:16:35.2 |
HIP 8571 |
20.72 |
| 2026-02-04 12:00 |
01:50:46.70 |
+28:16:30.6 |
HIP 8571 |
20.66 |
| 2026-02-05 00:00 |
01:50:47.35 |
+28:16:26.1 |
HIP 8571 |
20.61 |
| 2026-02-05 12:00 |
01:50:48.03 |
+28:16:21.7 |
HIP 8571 |
20.56 |
| 2026-02-06 00:00 |
01:50:48.72 |
+28:16:17.4 |
HIP 8571 |
20.52 |
| 2026-02-06 12:00 |
01:50:49.44 |
+28:16:13.3 |
HIP 8571 |
20.48 |
| 2026-02-07 00:00 |
01:50:50.17 |
+28:16:09.3 |
HIP 8571 |
20.45 |
| 2026-02-07 12:00 |
01:50:50.93 |
+28:16:05.4 |
HIP 8571 |
20.42 |
| 2026-02-08 00:00 |
01:50:51.70 |
+28:16:01.6 |
HIP 8571 |
20.39 |
| 2026-02-08 12:00 |
01:50:52.50 |
+28:15:58.0 |
HIP 8571 |
20.37 |
| 2026-02-09 00:00 |
01:50:53.31 |
+28:15:54.5 |
HIP 8571 |
20.35 |
| 2026-02-09 12:00 |
01:50:54.14 |
+28:15:51.1 |
HIP 8571 |
20.34 |
| 2026-02-10 00:00 |
01:50:55.00 |
+28:15:47.8 |
HIP 8571 |
20.33 |
| 2026-02-10 12:00 |
01:50:55.87 |
+28:15:44.7 |
HIP 8571 |
20.33 |
| 2026-02-11 00:00 |
01:50:56.76 |
+28:15:41.6 |
HIP 8571 |
20.33 |
| 2026-02-11 12:00 |
01:50:57.67 |
+28:15:38.8 |
HIP 8571 |
20.34 |
| 2026-02-12 00:00 |
01:50:58.60 |
+28:15:36.0 |
HIP 8571 |
20.36 |
| 2026-02-12 12:00 |
01:50:59.55 |
+28:15:33.4 |
HIP 8571 |
20.38 |
| 2026-02-13 00:00 |
01:51:00.52 |
+28:15:30.9 |
HIP 8571 |
20.40 |
| 2026-02-13 12:00 |
01:51:01.51 |
+28:15:28.5 |
HIP 8571 |
20.43 |
| 2026-02-14 00:00 |
01:51:02.52 |
+28:15:26.2 |
HIP 8571 |
20.47 |
| 2026-02-14 12:00 |
01:51:03.54 |
+28:15:24.1 |
HIP 8571 |
20.51 |
| 2026-02-15 00:00 |
01:51:04.59 |
+28:15:22.1 |
HIP 8571 |
20.56 |
| 2026-02-15 12:00 |
01:51:05.65 |
+28:15:20.2 |
HIP 8571 |
20.61 |
| 2026-02-16 00:00 |
01:51:06.73 |
+28:15:18.5 |
HIP 8571 |
20.67 |
| 2026-02-16 12:00 |
01:51:07.84 |
+28:15:16.9 |
HIP 8571 |
20.74 |
| 2026-02-17 00:00 |
01:51:08.95 |
+28:15:15.4 |
HIP 8571 |
20.81 |
| 2026-02-17 12:00 |
01:51:10.09 |
+28:15:14.1 |
HIP 8571 |
20.89 |
| 2026-02-18 00:00 |
01:51:11.25 |
+28:15:12.9 |
HIP 8571 |
20.97 |
| 2026-02-18 12:00 |
01:51:12.42 |
+28:15:11.8 |
HIP 8571 |
21.06 |
| 2026-02-19 00:00 |
01:51:13.61 |
+28:15:10.8 |
HIP 8571 |
21.16 |
| 2026-02-19 12:00 |
01:51:14.82 |
+28:15:10.0 |
HIP 8571 |
21.27 |
| 2026-02-20 00:00 |
01:51:16.05 |
+28:15:09.3 |
HIP 8571 |
21.38 |
| 2026-02-20 12:00 |
01:51:17.29 |
+28:15:08.7 |
HIP 8571 |
21.49 |
| 2026-02-21 00:00 |
01:51:18.56 |
+28:15:08.3 |
HIP 8571 |
21.62 |
| 2026-02-21 12:00 |
01:51:19.84 |
+28:15:08.0 |
HIP 8571 |
21.75 |
| 2026-02-22 00:00 |
01:51:21.13 |
+28:15:07.8 |
HIP 8571 |
21.89 |
| 2026-02-22 12:00 |
01:51:22.45 |
+28:15:07.8 |
HIP 8571 |
22.03 |
| 2026-02-23 00:00 |
01:51:23.78 |
+28:15:07.9 |
HIP 8571 |
22.18 |
| 2026-02-23 12:00 |
01:51:25.13 |
+28:15:08.1 |
HIP 8571 |
22.34 |
| 2026-02-24 00:00 |
01:51:26.49 |
+28:15:08.4 |
HIP 8571 |
22.50 |