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) |
| 2026-09-20 00:00 |
01:57:57.29 |
+29:26:10.6 |
HIP 9067 |
27.56 |
| 2026-09-20 12:00 |
01:57:55.27 |
+29:26:08.9 |
HIP 9067 |
27.33 |
| 2026-09-21 00:00 |
01:57:53.23 |
+29:26:07.0 |
HIP 9067 |
27.11 |
| 2026-09-21 12:00 |
01:57:51.19 |
+29:26:05.0 |
HIP 9067 |
26.89 |
| 2026-09-22 00:00 |
01:57:49.13 |
+29:26:02.9 |
HIP 9067 |
26.68 |
| 2026-09-22 12:00 |
01:57:47.06 |
+29:26:00.7 |
HIP 9067 |
26.48 |
| 2026-09-23 00:00 |
01:57:44.98 |
+29:25:58.3 |
HIP 9067 |
26.28 |
| 2026-09-23 12:00 |
01:57:42.88 |
+29:25:55.9 |
HIP 9067 |
26.09 |
| 2026-09-24 00:00 |
01:57:40.78 |
+29:25:53.2 |
HIP 9067 |
25.90 |
| 2026-09-24 12:00 |
01:57:38.66 |
+29:25:50.5 |
HIP 9067 |
25.73 |
| 2026-09-25 00:00 |
01:57:36.54 |
+29:25:47.7 |
HIP 9067 |
25.56 |
| 2026-09-25 12:00 |
01:57:34.40 |
+29:25:44.7 |
HIP 9067 |
25.40 |
| 2026-09-26 00:00 |
01:57:32.25 |
+29:25:41.6 |
HIP 9067 |
25.25 |
| 2026-09-26 12:00 |
01:57:30.10 |
+29:25:38.3 |
HIP 9067 |
25.11 |
| 2026-09-27 00:00 |
01:57:27.93 |
+29:25:35.0 |
HIP 9067 |
24.97 |
| 2026-09-27 12:00 |
01:57:25.75 |
+29:25:31.5 |
HIP 9067 |
24.85 |
| 2026-09-28 00:00 |
01:57:23.57 |
+29:25:27.9 |
HIP 9067 |
24.74 |
| 2026-09-28 12:00 |
01:57:21.37 |
+29:25:24.1 |
HIP 9067 |
24.63 |
| 2026-09-29 00:00 |
01:57:19.16 |
+29:25:20.3 |
HIP 9067 |
24.54 |
| 2026-09-29 12:00 |
01:57:16.95 |
+29:25:16.3 |
HIP 9067 |
24.46 |
| 2026-09-30 00:00 |
01:57:14.72 |
+29:25:12.2 |
HIP 9067 |
24.38 |
| 2026-09-30 12:00 |
01:57:12.49 |
+29:25:08.0 |
HIP 9067 |
24.32 |
| 2026-10-01 00:00 |
01:57:10.25 |
+29:25:03.6 |
HIP 9002 |
24.18 |
| 2026-10-01 12:00 |
01:57:07.99 |
+29:24:59.1 |
HIP 9002 |
23.91 |
| 2026-10-02 00:00 |
01:57:05.73 |
+29:24:54.6 |
HIP 9002 |
23.64 |
| 2026-10-02 12:00 |
01:57:03.47 |
+29:24:49.8 |
HIP 9002 |
23.38 |
| 2026-10-03 00:00 |
01:57:01.19 |
+29:24:45.0 |
HIP 9002 |
23.13 |
| 2026-10-03 12:00 |
01:56:58.90 |
+29:24:40.0 |
HIP 9002 |
22.89 |
| 2026-10-04 00:00 |
01:56:56.61 |
+29:24:35.0 |
HIP 9002 |
22.66 |
| 2026-10-04 12:00 |
01:56:54.31 |
+29:24:29.8 |
HIP 9002 |
22.44 |
| 2026-10-05 00:00 |
01:56:52.00 |
+29:24:24.5 |
HIP 9002 |
22.23 |
| 2026-10-05 12:00 |
01:56:49.69 |
+29:24:19.0 |
HIP 9002 |
22.02 |
| 2026-10-06 00:00 |
01:56:47.36 |
+29:24:13.5 |
HIP 9002 |
21.83 |
| 2026-10-06 12:00 |
01:56:45.03 |
+29:24:07.8 |
HIP 9002 |
21.65 |
| 2026-10-07 00:00 |
01:56:42.70 |
+29:24:02.0 |
HIP 9002 |
21.49 |
| 2026-10-07 12:00 |
01:56:40.35 |
+29:23:56.1 |
HIP 9002 |
21.33 |
| 2026-10-08 00:00 |
01:56:38.00 |
+29:23:50.1 |
HIP 9002 |
21.19 |
| 2026-10-08 12:00 |
01:56:35.65 |
+29:23:43.9 |
HIP 9002 |
21.06 |
| 2026-10-09 00:00 |
01:56:33.28 |
+29:23:37.6 |
HIP 9002 |
20.95 |
| 2026-10-09 12:00 |
01:56:30.92 |
+29:23:31.3 |
HIP 9002 |
20.84 |
| 2026-10-10 00:00 |
01:56:28.54 |
+29:23:24.8 |
HIP 9002 |
20.76 |
| 2026-10-10 12:00 |
01:56:26.16 |
+29:23:18.2 |
HIP 9002 |
20.68 |
| 2026-10-11 00:00 |
01:56:23.78 |
+29:23:11.5 |
HIP 9002 |
20.63 |