C/1968 U1 (Wild)
メタデータ
| 項目 |
値 |
| Designation |
C/1968 U1 (Wild) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1968-03-30T21:16:07.515840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:19Z |
| Obs used |
15 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1968-10-24.0000000 |
| e |
0.99993577 |
| q (au) |
2.603057 |
| a (au) |
40525.056308 |
| i (deg) |
135.132950 |
| Ω (om, deg) |
209.215253 |
| ω (w, deg) |
101.490599 |
| M (ma, deg) |
0.000025 |
等級
散乱 + 全体線形
$$
M_a = (10.655 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.655 |
| n |
6.000 |
| gf |
0.937 |
| gb |
-0.912 |
| k |
0.800 |
| δ90 |
7.732 |
| 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 |
22:22:58.51 |
-57:57:00.4 |
HIP 110450 |
6.03 |
| 2026-02-03 12:00 |
22:23:00.85 |
-57:56:50.2 |
HIP 110450 |
6.39 |
| 2026-02-04 00:00 |
22:23:03.21 |
-57:56:40.1 |
HIP 110450 |
6.74 |
| 2026-02-04 12:00 |
22:23:05.57 |
-57:56:30.1 |
HIP 110450 |
7.10 |
| 2026-02-05 00:00 |
22:23:07.94 |
-57:56:20.2 |
HIP 110450 |
7.45 |
| 2026-02-05 12:00 |
22:23:10.31 |
-57:56:10.5 |
HIP 110450 |
7.81 |
| 2026-02-06 00:00 |
22:23:12.70 |
-57:56:00.8 |
HIP 110450 |
8.16 |
| 2026-02-06 12:00 |
22:23:15.08 |
-57:55:51.3 |
HIP 110450 |
8.51 |
| 2026-02-07 00:00 |
22:23:17.48 |
-57:55:41.9 |
HIP 110450 |
8.87 |
| 2026-02-07 12:00 |
22:23:19.88 |
-57:55:32.6 |
HIP 110450 |
9.22 |
| 2026-02-08 00:00 |
22:23:22.28 |
-57:55:23.5 |
HIP 110450 |
9.57 |
| 2026-02-08 12:00 |
22:23:24.69 |
-57:55:14.4 |
HIP 110450 |
9.93 |
| 2026-02-09 00:00 |
22:23:27.11 |
-57:55:05.5 |
HIP 110450 |
10.28 |
| 2026-02-09 12:00 |
22:23:29.53 |
-57:54:56.7 |
HIP 110450 |
10.63 |
| 2026-02-10 00:00 |
22:23:31.96 |
-57:54:48.0 |
HIP 110450 |
10.99 |
| 2026-02-10 12:00 |
22:23:34.39 |
-57:54:39.5 |
HIP 110450 |
11.34 |
| 2026-02-11 00:00 |
22:23:36.82 |
-57:54:31.1 |
HIP 110450 |
11.69 |
| 2026-02-11 12:00 |
22:23:39.26 |
-57:54:22.8 |
HIP 110450 |
12.04 |
| 2026-02-12 00:00 |
22:23:41.71 |
-57:54:14.6 |
HIP 110649 |
11.82 |
| 2026-02-12 12:00 |
22:23:44.16 |
-57:54:06.6 |
HIP 110649 |
11.48 |
| 2026-02-13 00:00 |
22:23:46.61 |
-57:53:58.6 |
HIP 110649 |
11.13 |
| 2026-02-13 12:00 |
22:23:49.07 |
-57:53:50.9 |
HIP 110649 |
10.79 |
| 2026-02-14 00:00 |
22:23:51.53 |
-57:53:43.2 |
HIP 110649 |
10.45 |
| 2026-02-14 12:00 |
22:23:53.99 |
-57:53:35.7 |
HIP 110649 |
10.11 |
| 2026-02-15 00:00 |
22:23:56.45 |
-57:53:28.3 |
HIP 110649 |
9.77 |
| 2026-02-15 12:00 |
22:23:58.92 |
-57:53:21.0 |
HIP 110649 |
9.43 |
| 2026-02-16 00:00 |
22:24:01.40 |
-57:53:13.9 |
HIP 110649 |
9.09 |
| 2026-02-16 12:00 |
22:24:03.87 |
-57:53:06.9 |
HIP 110649 |
8.76 |
| 2026-02-17 00:00 |
22:24:06.35 |
-57:53:00.0 |
HIP 110649 |
8.43 |
| 2026-02-17 12:00 |
22:24:08.83 |
-57:52:53.2 |
HIP 110649 |
8.10 |
| 2026-02-18 00:00 |
22:24:11.31 |
-57:52:46.6 |
HIP 110649 |
7.78 |
| 2026-02-18 12:00 |
22:24:13.79 |
-57:52:40.2 |
HIP 110649 |
7.46 |
| 2026-02-19 00:00 |
22:24:16.27 |
-57:52:33.8 |
HIP 110649 |
7.14 |
| 2026-02-19 12:00 |
22:24:18.76 |
-57:52:27.6 |
HIP 110649 |
6.82 |
| 2026-02-20 00:00 |
22:24:21.25 |
-57:52:21.6 |
HIP 110649 |
6.52 |
| 2026-02-20 12:00 |
22:24:23.73 |
-57:52:15.6 |
HIP 110649 |
6.21 |
| 2026-02-21 00:00 |
22:24:26.22 |
-57:52:09.8 |
HIP 110649 |
5.91 |
| 2026-02-21 12:00 |
22:24:28.71 |
-57:52:04.2 |
HIP 110649 |
5.62 |
| 2026-02-22 00:00 |
22:24:31.20 |
-57:51:58.6 |
HIP 110649 |
5.34 |
| 2026-02-22 12:00 |
22:24:33.69 |
-57:51:53.3 |
HIP 110649 |
5.07 |
| 2026-02-23 00:00 |
22:24:36.18 |
-57:51:48.0 |
HIP 110649 |
4.81 |
| 2026-02-23 12:00 |
22:24:38.67 |
-57:51:42.9 |
HIP 110649 |
4.56 |
| 2026-02-24 00:00 |
22:24:41.16 |
-57:51:37.9 |
HIP 110649 |
4.33 |