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
$$
M_a = (10.654 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.654 |
| n |
6.000 |
| gf |
0.998 |
| gb |
-0.912 |
| k |
0.800 |
| δ90 |
7.619 |
| 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 |
22:22:15.01 |
-58:58:36.7 |
HIP 110499 |
8.28 |
| 2026-09-20 12:00 |
22:22:12.56 |
-58:58:35.1 |
HIP 110499 |
8.53 |
| 2026-09-21 00:00 |
22:22:10.13 |
-58:58:33.3 |
HIP 110499 |
8.78 |
| 2026-09-21 12:00 |
22:22:07.71 |
-58:58:31.4 |
HIP 110499 |
9.03 |
| 2026-09-22 00:00 |
22:22:05.29 |
-58:58:29.3 |
HIP 110499 |
9.29 |
| 2026-09-22 12:00 |
22:22:02.89 |
-58:58:27.1 |
HIP 110499 |
9.55 |
| 2026-09-23 00:00 |
22:22:00.50 |
-58:58:24.8 |
HIP 110499 |
9.81 |
| 2026-09-23 12:00 |
22:21:58.11 |
-58:58:22.3 |
HIP 110328 |
10.03 |
| 2026-09-24 00:00 |
22:21:55.74 |
-58:58:19.6 |
HIP 110328 |
9.73 |
| 2026-09-24 12:00 |
22:21:53.38 |
-58:58:16.8 |
HIP 110328 |
9.43 |
| 2026-09-25 00:00 |
22:21:51.03 |
-58:58:13.8 |
HIP 110328 |
9.14 |
| 2026-09-25 12:00 |
22:21:48.69 |
-58:58:10.7 |
HIP 110328 |
8.84 |
| 2026-09-26 00:00 |
22:21:46.36 |
-58:58:07.5 |
HIP 110328 |
8.55 |
| 2026-09-26 12:00 |
22:21:44.04 |
-58:58:04.1 |
HIP 110328 |
8.26 |
| 2026-09-27 00:00 |
22:21:41.74 |
-58:58:00.6 |
HIP 110328 |
7.96 |
| 2026-09-27 12:00 |
22:21:39.44 |
-58:57:56.9 |
HIP 110328 |
7.67 |
| 2026-09-28 00:00 |
22:21:37.16 |
-58:57:53.1 |
HIP 110328 |
7.38 |
| 2026-09-28 12:00 |
22:21:34.89 |
-58:57:49.1 |
HIP 110328 |
7.10 |
| 2026-09-29 00:00 |
22:21:32.63 |
-58:57:45.0 |
HIP 110328 |
6.81 |
| 2026-09-29 12:00 |
22:21:30.38 |
-58:57:40.8 |
HIP 110328 |
6.52 |
| 2026-09-30 00:00 |
22:21:28.15 |
-58:57:36.4 |
HIP 110328 |
6.24 |
| 2026-09-30 12:00 |
22:21:25.93 |
-58:57:31.8 |
HIP 110328 |
5.95 |
| 2026-10-01 00:00 |
22:21:23.72 |
-58:57:27.2 |
HIP 110328 |
5.67 |
| 2026-10-01 12:00 |
22:21:21.52 |
-58:57:22.3 |
HIP 110328 |
5.39 |
| 2026-10-02 00:00 |
22:21:19.34 |
-58:57:17.4 |
HIP 110328 |
5.11 |
| 2026-10-02 12:00 |
22:21:17.17 |
-58:57:12.3 |
HIP 110328 |
4.83 |
| 2026-10-03 00:00 |
22:21:15.02 |
-58:57:07.0 |
HIP 110328 |
4.56 |
| 2026-10-03 12:00 |
22:21:12.87 |
-58:57:01.6 |
HIP 110328 |
4.29 |
| 2026-10-04 00:00 |
22:21:10.75 |
-58:56:56.1 |
HIP 110328 |
4.01 |
| 2026-10-04 12:00 |
22:21:08.63 |
-58:56:50.4 |
HIP 110328 |
3.75 |
| 2026-10-05 00:00 |
22:21:06.53 |
-58:56:44.6 |
HIP 110328 |
3.48 |
| 2026-10-05 12:00 |
22:21:04.45 |
-58:56:38.7 |
HIP 110328 |
3.22 |
| 2026-10-06 00:00 |
22:21:02.38 |
-58:56:32.6 |
HIP 110328 |
2.96 |
| 2026-10-06 12:00 |
22:21:00.32 |
-58:56:26.4 |
HIP 110328 |
2.71 |
| 2026-10-07 00:00 |
22:20:58.28 |
-58:56:20.0 |
HIP 110328 |
2.46 |
| 2026-10-07 12:00 |
22:20:56.25 |
-58:56:13.5 |
HIP 110328 |
2.22 |
| 2026-10-08 00:00 |
22:20:54.24 |
-58:56:06.9 |
HIP 110328 |
1.99 |
| 2026-10-08 12:00 |
22:20:52.24 |
-58:56:00.1 |
HIP 110328 |
1.78 |
| 2026-10-09 00:00 |
22:20:50.26 |
-58:55:53.2 |
HIP 110328 |
1.58 |
| 2026-10-09 12:00 |
22:20:48.30 |
-58:55:46.1 |
HIP 110328 |
1.41 |
| 2026-10-10 00:00 |
22:20:46.35 |
-58:55:38.9 |
HIP 110328 |
1.28 |
| 2026-10-10 12:00 |
22:20:44.42 |
-58:55:31.6 |
HIP 110328 |
1.20 |
| 2026-10-11 00:00 |
22:20:42.50 |
-58:55:24.2 |
HIP 110328 |
1.18 |