C/2006 S5 (Hill)
メタデータ
| 項目 |
値 |
| Designation |
C/2006 S5 (Hill) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-12-09T18:01:38.340480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:00Z |
| Obs used |
1177 |
| NEO |
- |
| M1 |
12.500 |
| 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) |
2007-11-10.0000000 |
| e |
0.97300141 |
| q (au) |
2.630434 |
| a (au) |
97.428581 |
| i (deg) |
10.131379 |
| Ω (om, deg) |
281.563425 |
| ω (w, deg) |
182.109258 |
| M (ma, deg) |
359.969509 |
等級
散乱 + 全体線形
$$
M_a = (13.005 + 2.274\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.005 |
| n |
2.274 |
| gf |
1.000 |
| gb |
-0.585 |
| 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 |
16:58:38.38 |
-27:11:58.7 |
HIP 83073 |
5.52 |
| 2026-02-03 12:00 |
16:58:40.64 |
-27:12:04.7 |
HIP 83073 |
5.79 |
| 2026-02-04 00:00 |
16:58:42.87 |
-27:12:10.8 |
HIP 83073 |
6.09 |
| 2026-02-04 12:00 |
16:58:45.08 |
-27:12:16.8 |
HIP 83073 |
6.41 |
| 2026-02-05 00:00 |
16:58:47.25 |
-27:12:22.8 |
HIP 83073 |
6.75 |
| 2026-02-05 12:00 |
16:58:49.40 |
-27:12:28.7 |
HIP 83073 |
7.11 |
| 2026-02-06 00:00 |
16:58:51.52 |
-27:12:34.7 |
HIP 83073 |
7.47 |
| 2026-02-06 12:00 |
16:58:53.62 |
-27:12:40.6 |
HIP 83073 |
7.85 |
| 2026-02-07 00:00 |
16:58:55.68 |
-27:12:46.5 |
HIP 83073 |
8.23 |
| 2026-02-07 12:00 |
16:58:57.72 |
-27:12:52.4 |
HIP 83073 |
8.61 |
| 2026-02-08 00:00 |
16:58:59.73 |
-27:12:58.2 |
HIP 83073 |
9.00 |
| 2026-02-08 12:00 |
16:59:01.71 |
-27:13:04.0 |
HIP 83073 |
9.38 |
| 2026-02-09 00:00 |
16:59:03.66 |
-27:13:09.8 |
HIP 83073 |
9.77 |
| 2026-02-09 12:00 |
16:59:05.58 |
-27:13:15.6 |
HIP 83073 |
10.16 |
| 2026-02-10 00:00 |
16:59:07.47 |
-27:13:21.4 |
HIP 83073 |
10.54 |
| 2026-02-10 12:00 |
16:59:09.33 |
-27:13:27.1 |
HIP 83073 |
10.93 |
| 2026-02-11 00:00 |
16:59:11.17 |
-27:13:32.8 |
HIP 83073 |
11.31 |
| 2026-02-11 12:00 |
16:59:12.97 |
-27:13:38.4 |
HIP 83073 |
11.69 |
| 2026-02-12 00:00 |
16:59:14.75 |
-27:13:44.1 |
HIP 83073 |
12.06 |
| 2026-02-12 12:00 |
16:59:16.49 |
-27:13:49.7 |
HIP 83073 |
12.43 |
| 2026-02-13 00:00 |
16:59:18.20 |
-27:13:55.3 |
HIP 83073 |
12.80 |
| 2026-02-13 12:00 |
16:59:19.89 |
-27:14:00.8 |
HIP 83073 |
13.16 |
| 2026-02-14 00:00 |
16:59:21.54 |
-27:14:06.3 |
HIP 83073 |
13.52 |
| 2026-02-14 12:00 |
16:59:23.17 |
-27:14:11.8 |
HIP 83073 |
13.87 |
| 2026-02-15 00:00 |
16:59:24.76 |
-27:14:17.3 |
HIP 83073 |
14.22 |
| 2026-02-15 12:00 |
16:59:26.32 |
-27:14:22.7 |
HIP 83073 |
14.57 |
| 2026-02-16 00:00 |
16:59:27.85 |
-27:14:28.1 |
HIP 83073 |
14.90 |
| 2026-02-16 12:00 |
16:59:29.35 |
-27:14:33.5 |
HIP 83073 |
15.24 |
| 2026-02-17 00:00 |
16:59:30.82 |
-27:14:38.8 |
HIP 83073 |
15.56 |
| 2026-02-17 12:00 |
16:59:32.26 |
-27:14:44.1 |
HIP 83073 |
15.88 |
| 2026-02-18 00:00 |
16:59:33.67 |
-27:14:49.4 |
HIP 83073 |
16.20 |
| 2026-02-18 12:00 |
16:59:35.04 |
-27:14:54.7 |
HIP 83073 |
16.51 |
| 2026-02-19 00:00 |
16:59:36.39 |
-27:14:59.9 |
HIP 83073 |
16.81 |
| 2026-02-19 12:00 |
16:59:37.70 |
-27:15:05.0 |
HIP 83073 |
17.10 |
| 2026-02-20 00:00 |
16:59:38.98 |
-27:15:10.2 |
HIP 83073 |
17.40 |
| 2026-02-20 12:00 |
16:59:40.23 |
-27:15:15.3 |
HIP 83073 |
17.68 |
| 2026-02-21 00:00 |
16:59:41.45 |
-27:15:20.4 |
HIP 83073 |
17.96 |
| 2026-02-21 12:00 |
16:59:42.63 |
-27:15:25.4 |
HIP 83073 |
18.23 |
| 2026-02-22 00:00 |
16:59:43.79 |
-27:15:30.4 |
HIP 83073 |
18.49 |
| 2026-02-22 12:00 |
16:59:44.91 |
-27:15:35.4 |
HIP 83073 |
18.75 |
| 2026-02-23 00:00 |
16:59:46.00 |
-27:15:40.3 |
HIP 83073 |
19.01 |
| 2026-02-23 12:00 |
16:59:47.05 |
-27:15:45.2 |
HIP 83195 |
19.17 |
| 2026-02-24 00:00 |
16:59:48.08 |
-27:15:50.0 |
HIP 83195 |
19.19 |