C/2005 K1 (Skiff)
メタデータ
| 項目 |
値 |
| Designation |
C/2005 K1 (Skiff) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-11-21T04:38:57.312960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:49Z |
| Obs used |
616 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
12.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2005-08-23.0000000 |
| e |
1.00329003 |
| q (au) |
3.692912 |
| a (au) |
-1122.454642 |
| i (deg) |
77.747578 |
| Ω (om, deg) |
106.305012 |
| ω (w, deg) |
134.938813 |
| M (ma, deg) |
-0.002364 |
等級
散乱 + 全体線形
$$
M_a = (4.163 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.163 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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 |
04:49:39.48 |
-54:23:54.7 |
HIP 22448 |
3.59 |
| 2026-02-03 12:00 |
04:49:37.02 |
-54:23:13.0 |
HIP 22448 |
4.37 |
| 2026-02-04 00:00 |
04:49:34.61 |
-54:22:31.1 |
HIP 22448 |
5.15 |
| 2026-02-04 12:00 |
04:49:32.24 |
-54:21:49.0 |
HIP 22448 |
5.93 |
| 2026-02-05 00:00 |
04:49:29.91 |
-54:21:06.7 |
HIP 22448 |
6.71 |
| 2026-02-05 12:00 |
04:49:27.63 |
-54:20:24.3 |
HIP 22448 |
7.49 |
| 2026-02-06 00:00 |
04:49:25.39 |
-54:19:41.6 |
HIP 22448 |
8.27 |
| 2026-02-06 12:00 |
04:49:23.19 |
-54:18:58.8 |
HIP 22448 |
9.06 |
| 2026-02-07 00:00 |
04:49:21.03 |
-54:18:15.7 |
HIP 22471 |
9.26 |
| 2026-02-07 12:00 |
04:49:18.92 |
-54:17:32.5 |
HIP 22471 |
9.03 |
| 2026-02-08 00:00 |
04:49:16.85 |
-54:16:49.2 |
HIP 22471 |
8.85 |
| 2026-02-08 12:00 |
04:49:14.82 |
-54:16:05.6 |
HIP 22471 |
8.74 |
| 2026-02-09 00:00 |
04:49:12.84 |
-54:15:21.9 |
HIP 22471 |
8.69 |
| 2026-02-09 12:00 |
04:49:10.90 |
-54:14:38.0 |
HIP 22471 |
8.70 |
| 2026-02-10 00:00 |
04:49:09.01 |
-54:13:54.0 |
HIP 22471 |
8.78 |
| 2026-02-10 12:00 |
04:49:07.16 |
-54:13:09.8 |
HIP 22471 |
8.92 |
| 2026-02-11 00:00 |
04:49:05.35 |
-54:12:25.4 |
HIP 22471 |
9.12 |
| 2026-02-11 12:00 |
04:49:03.59 |
-54:11:40.9 |
HIP 22471 |
9.37 |
| 2026-02-12 00:00 |
04:49:01.87 |
-54:10:56.3 |
HIP 22471 |
9.67 |
| 2026-02-12 12:00 |
04:49:00.20 |
-54:10:11.5 |
HIP 22471 |
10.03 |
| 2026-02-13 00:00 |
04:48:58.57 |
-54:09:26.5 |
HIP 22471 |
10.42 |
| 2026-02-13 12:00 |
04:48:56.98 |
-54:08:41.5 |
HIP 22471 |
10.85 |
| 2026-02-14 00:00 |
04:48:55.44 |
-54:07:56.2 |
HIP 22471 |
11.31 |
| 2026-02-14 12:00 |
04:48:53.95 |
-54:07:10.9 |
HIP 22471 |
11.81 |
| 2026-02-15 00:00 |
04:48:52.50 |
-54:06:25.4 |
HIP 22471 |
12.32 |
| 2026-02-15 12:00 |
04:48:51.09 |
-54:05:39.8 |
HIP 22471 |
12.87 |
| 2026-02-16 00:00 |
04:48:49.74 |
-54:04:54.1 |
HIP 22471 |
13.43 |
| 2026-02-16 12:00 |
04:48:48.42 |
-54:04:08.3 |
HIP 22431 |
13.29 |
| 2026-02-17 00:00 |
04:48:47.15 |
-54:03:22.3 |
HIP 22431 |
12.76 |
| 2026-02-17 12:00 |
04:48:45.93 |
-54:02:36.3 |
HIP 22431 |
12.25 |
| 2026-02-18 00:00 |
04:48:44.75 |
-54:01:50.1 |
HIP 22431 |
11.76 |
| 2026-02-18 12:00 |
04:48:43.62 |
-54:01:03.9 |
HIP 22431 |
11.30 |
| 2026-02-19 00:00 |
04:48:42.53 |
-54:00:17.5 |
HIP 22431 |
10.88 |
| 2026-02-19 12:00 |
04:48:41.49 |
-53:59:31.0 |
HIP 22431 |
10.49 |
| 2026-02-20 00:00 |
04:48:40.49 |
-53:58:44.5 |
HIP 22431 |
10.14 |
| 2026-02-20 12:00 |
04:48:39.54 |
-53:57:57.9 |
HIP 22431 |
9.84 |
| 2026-02-21 00:00 |
04:48:38.64 |
-53:57:11.1 |
HIP 22431 |
9.58 |
| 2026-02-21 12:00 |
04:48:37.78 |
-53:56:24.3 |
HIP 22431 |
9.38 |
| 2026-02-22 00:00 |
04:48:36.97 |
-53:55:37.5 |
HIP 22431 |
9.23 |
| 2026-02-22 12:00 |
04:48:36.20 |
-53:54:50.5 |
HIP 22431 |
9.15 |
| 2026-02-23 00:00 |
04:48:35.47 |
-53:54:03.5 |
HIP 22431 |
9.12 |
| 2026-02-23 12:00 |
04:48:34.80 |
-53:53:16.4 |
HIP 22431 |
9.16 |
| 2026-02-24 00:00 |
04:48:34.17 |
-53:52:29.3 |
HIP 22431 |
9.26 |