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) |
| 2026-05-12 00:00 |
22:29:20.31 |
-58:06:05.3 |
HIP 110887 |
11.45 |
| 2026-05-12 12:00 |
22:29:20.91 |
-58:06:20.0 |
HIP 110887 |
11.52 |
| 2026-05-13 00:00 |
22:29:21.48 |
-58:06:34.7 |
HIP 110887 |
11.59 |
| 2026-05-13 12:00 |
22:29:22.04 |
-58:06:49.5 |
HIP 110887 |
11.67 |
| 2026-05-14 00:00 |
22:29:22.57 |
-58:07:04.4 |
HIP 110887 |
11.74 |
| 2026-05-14 12:00 |
22:29:23.08 |
-58:07:19.4 |
HIP 110887 |
11.82 |
| 2026-05-15 00:00 |
22:29:23.57 |
-58:07:34.4 |
HIP 110887 |
11.90 |
| 2026-05-15 12:00 |
22:29:24.05 |
-58:07:49.5 |
HIP 110887 |
11.99 |
| 2026-05-16 00:00 |
22:29:24.50 |
-58:08:04.7 |
HIP 110887 |
12.07 |
| 2026-05-16 12:00 |
22:29:24.93 |
-58:08:20.0 |
HIP 110887 |
12.16 |
| 2026-05-17 00:00 |
22:29:25.33 |
-58:08:35.3 |
HIP 110887 |
12.25 |
| 2026-05-17 12:00 |
22:29:25.72 |
-58:08:50.7 |
HIP 110887 |
12.34 |
| 2026-05-18 00:00 |
22:29:26.08 |
-58:09:06.2 |
HIP 110887 |
12.44 |
| 2026-05-18 12:00 |
22:29:26.43 |
-58:09:21.7 |
HIP 110887 |
12.54 |
| 2026-05-19 00:00 |
22:29:26.75 |
-58:09:37.3 |
HIP 110887 |
12.64 |
| 2026-05-19 12:00 |
22:29:27.05 |
-58:09:53.0 |
HIP 110887 |
12.74 |
| 2026-05-20 00:00 |
22:29:27.33 |
-58:10:08.7 |
HIP 110887 |
12.84 |
| 2026-05-20 12:00 |
22:29:27.59 |
-58:10:24.5 |
HIP 110887 |
12.95 |
| 2026-05-21 00:00 |
22:29:27.83 |
-58:10:40.3 |
HIP 110887 |
13.06 |
| 2026-05-21 12:00 |
22:29:28.05 |
-58:10:56.2 |
HIP 110887 |
13.17 |
| 2026-05-22 00:00 |
22:29:28.24 |
-58:11:12.2 |
HIP 110887 |
13.28 |
| 2026-05-22 12:00 |
22:29:28.41 |
-58:11:28.2 |
HIP 110887 |
13.39 |
| 2026-05-23 00:00 |
22:29:28.57 |
-58:11:44.3 |
HIP 110887 |
13.51 |
| 2026-05-23 12:00 |
22:29:28.70 |
-58:12:00.5 |
HIP 110887 |
13.63 |
| 2026-05-24 00:00 |
22:29:28.80 |
-58:12:16.6 |
HIP 110887 |
13.75 |
| 2026-05-24 12:00 |
22:29:28.89 |
-58:12:32.9 |
HIP 110887 |
13.87 |
| 2026-05-25 00:00 |
22:29:28.96 |
-58:12:49.2 |
HIP 110887 |
14.00 |
| 2026-05-25 12:00 |
22:29:29.00 |
-58:13:05.5 |
HIP 110887 |
14.12 |
| 2026-05-26 00:00 |
22:29:29.03 |
-58:13:21.9 |
HIP 110887 |
14.25 |
| 2026-05-26 12:00 |
22:29:29.03 |
-58:13:38.4 |
HIP 110887 |
14.38 |
| 2026-05-27 00:00 |
22:29:29.01 |
-58:13:54.8 |
HIP 110887 |
14.52 |
| 2026-05-27 12:00 |
22:29:28.97 |
-58:14:11.4 |
HIP 110887 |
14.65 |
| 2026-05-28 00:00 |
22:29:28.90 |
-58:14:27.9 |
HIP 110887 |
14.79 |
| 2026-05-28 12:00 |
22:29:28.82 |
-58:14:44.6 |
HIP 110887 |
14.93 |
| 2026-05-29 00:00 |
22:29:28.71 |
-58:15:01.2 |
HIP 110887 |
15.07 |
| 2026-05-29 12:00 |
22:29:28.59 |
-58:15:17.9 |
HIP 110887 |
15.21 |
| 2026-05-30 00:00 |
22:29:28.44 |
-58:15:34.7 |
HIP 110887 |
15.35 |
| 2026-05-30 12:00 |
22:29:28.27 |
-58:15:51.5 |
HIP 110887 |
15.50 |
| 2026-05-31 00:00 |
22:29:28.08 |
-58:16:08.3 |
HIP 110887 |
15.65 |
| 2026-05-31 12:00 |
22:29:27.87 |
-58:16:25.1 |
HIP 110887 |
15.80 |
| 2026-06-01 00:00 |
22:29:27.63 |
-58:16:42.0 |
HIP 110887 |
15.95 |
| 2026-06-01 12:00 |
22:29:27.38 |
-58:16:59.0 |
HIP 110887 |
16.10 |
| 2026-06-02 00:00 |
22:29:27.10 |
-58:17:15.9 |
HIP 110887 |
16.25 |