メタデータ
| 項目 |
値 |
| Designation |
C/1967 C2 (Wild) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1967-03-02T12:44:10.069440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:17Z |
| Obs used |
37 |
| NEO |
- |
| M1 |
9.900 |
| K1 |
10.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1967-03-07.0000000 |
| e |
1.00000000 |
| q (au) |
1.327154 |
| a (au) |
- |
| i (deg) |
99.105076 |
| Ω (om, deg) |
306.845094 |
| ω (w, deg) |
173.262851 |
| M (ma, deg) |
- |
等級
散乱 + 全体線形
$$
M_a = (8.767 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.767 |
| 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) |
| 2026-07-29 00:00 |
21:19:57.87 |
-37:45:57.8 |
HIP 105495 |
27.31 |
| 2026-07-29 12:00 |
21:19:56.20 |
-37:46:04.8 |
HIP 105495 |
27.65 |
| 2026-07-30 00:00 |
21:19:54.52 |
-37:46:11.8 |
HIP 105495 |
28.00 |
| 2026-07-30 12:00 |
21:19:52.84 |
-37:46:18.7 |
HIP 105495 |
28.35 |
| 2026-07-31 00:00 |
21:19:51.16 |
-37:46:25.5 |
HIP 105495 |
28.70 |
| 2026-07-31 12:00 |
21:19:49.48 |
-37:46:32.3 |
HIP 105495 |
29.04 |
| 2026-08-01 00:00 |
21:19:47.79 |
-37:46:39.0 |
HIP 105495 |
29.39 |
| 2026-08-01 12:00 |
21:19:46.10 |
-37:46:45.7 |
HIP 105495 |
29.74 |
| 2026-08-02 00:00 |
21:19:44.41 |
-37:46:52.3 |
HIP 105495 |
30.09 |
| 2026-08-02 12:00 |
21:19:42.72 |
-37:46:58.8 |
HIP 105495 |
30.44 |
| 2026-08-03 00:00 |
21:19:41.02 |
-37:47:05.3 |
HIP 105434 |
30.77 |
| 2026-08-03 12:00 |
21:19:39.33 |
-37:47:11.7 |
HIP 105434 |
30.91 |
| 2026-08-04 00:00 |
21:19:37.63 |
-37:47:18.0 |
HIP 105434 |
31.05 |
| 2026-08-04 12:00 |
21:19:35.93 |
-37:47:24.3 |
HIP 105434 |
31.20 |
| 2026-08-05 00:00 |
21:19:34.23 |
-37:47:30.5 |
HIP 105434 |
31.35 |
| 2026-08-05 12:00 |
21:19:32.52 |
-37:47:36.7 |
HIP 105434 |
31.50 |
| 2026-08-06 00:00 |
21:19:30.82 |
-37:47:42.8 |
HIP 105434 |
31.66 |
| 2026-08-06 12:00 |
21:19:29.11 |
-37:47:48.8 |
HIP 105434 |
31.83 |
| 2026-08-07 00:00 |
21:19:27.40 |
-37:47:54.8 |
HIP 105434 |
31.99 |
| 2026-08-07 12:00 |
21:19:25.70 |
-37:48:00.7 |
HIP 105434 |
32.16 |
| 2026-08-08 00:00 |
21:19:23.99 |
-37:48:06.5 |
HIP 105434 |
32.34 |
| 2026-08-08 12:00 |
21:19:22.28 |
-37:48:12.3 |
HIP 105434 |
32.51 |
| 2026-08-09 00:00 |
21:19:20.57 |
-37:48:18.0 |
HIP 105434 |
32.70 |
| 2026-08-09 12:00 |
21:19:18.86 |
-37:48:23.6 |
HIP 105304 |
32.69 |
| 2026-08-10 00:00 |
21:19:17.15 |
-37:48:29.1 |
HIP 105304 |
32.64 |
| 2026-08-10 12:00 |
21:19:15.44 |
-37:48:34.6 |
HIP 105304 |
32.61 |
| 2026-08-11 00:00 |
21:19:13.73 |
-37:48:40.1 |
HIP 105304 |
32.58 |
| 2026-08-11 12:00 |
21:19:12.02 |
-37:48:45.4 |
HIP 105304 |
32.55 |
| 2026-08-12 00:00 |
21:19:10.31 |
-37:48:50.7 |
HIP 105029 |
32.43 |
| 2026-08-12 12:00 |
21:19:08.60 |
-37:48:55.9 |
HIP 105029 |
32.09 |
| 2026-08-13 00:00 |
21:19:06.89 |
-37:49:01.0 |
HIP 105029 |
31.75 |
| 2026-08-13 12:00 |
21:19:05.18 |
-37:49:06.1 |
HIP 105029 |
31.41 |
| 2026-08-14 00:00 |
21:19:03.47 |
-37:49:11.1 |
HIP 105029 |
31.07 |
| 2026-08-14 12:00 |
21:19:01.77 |
-37:49:16.0 |
HIP 105029 |
30.74 |
| 2026-08-15 00:00 |
21:19:00.06 |
-37:49:20.9 |
HIP 105029 |
30.40 |
| 2026-08-15 12:00 |
21:18:58.36 |
-37:49:25.6 |
HIP 105029 |
30.06 |
| 2026-08-16 00:00 |
21:18:56.66 |
-37:49:30.3 |
HIP 105029 |
29.73 |
| 2026-08-16 12:00 |
21:18:54.96 |
-37:49:35.0 |
HIP 105029 |
29.39 |
| 2026-08-17 00:00 |
21:18:53.26 |
-37:49:39.5 |
HIP 105029 |
29.06 |
| 2026-08-17 12:00 |
21:18:51.56 |
-37:49:44.0 |
HIP 105029 |
28.72 |
| 2026-08-18 00:00 |
21:18:49.86 |
-37:49:48.4 |
HIP 105029 |
28.39 |
| 2026-08-18 12:00 |
21:18:48.17 |
-37:49:52.7 |
HIP 105029 |
28.05 |
| 2026-08-19 00:00 |
21:18:46.48 |
-37:49:57.0 |
HIP 105029 |
27.72 |