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) |
| 2026-03-26 00:00 |
21:21:44.57 |
-37:15:42.3 |
HIP 105392 |
15.23 |
| 2026-03-26 12:00 |
21:21:45.71 |
-37:15:43.5 |
HIP 105392 |
15.40 |
| 2026-03-27 00:00 |
21:21:46.85 |
-37:15:44.8 |
HIP 105392 |
15.57 |
| 2026-03-27 12:00 |
21:21:47.97 |
-37:15:46.2 |
HIP 105392 |
15.75 |
| 2026-03-28 00:00 |
21:21:49.08 |
-37:15:47.6 |
HIP 105392 |
15.92 |
| 2026-03-28 12:00 |
21:21:50.18 |
-37:15:49.1 |
HIP 105392 |
16.10 |
| 2026-03-29 00:00 |
21:21:51.27 |
-37:15:50.7 |
HIP 105392 |
16.27 |
| 2026-03-29 12:00 |
21:21:52.35 |
-37:15:52.4 |
HIP 105392 |
16.45 |
| 2026-03-30 00:00 |
21:21:53.42 |
-37:15:54.2 |
HIP 105392 |
16.63 |
| 2026-03-30 12:00 |
21:21:54.47 |
-37:15:56.0 |
HIP 105392 |
16.80 |
| 2026-03-31 00:00 |
21:21:55.52 |
-37:15:57.9 |
HIP 105392 |
16.98 |
| 2026-03-31 12:00 |
21:21:56.55 |
-37:16:00.0 |
HIP 105392 |
17.16 |
| 2026-04-01 00:00 |
21:21:57.58 |
-37:16:02.1 |
HIP 105495 |
17.24 |
| 2026-04-01 12:00 |
21:21:58.59 |
-37:16:04.2 |
HIP 105495 |
17.20 |
| 2026-04-02 00:00 |
21:21:59.59 |
-37:16:06.5 |
HIP 105495 |
17.16 |
| 2026-04-02 12:00 |
21:22:00.58 |
-37:16:08.8 |
HIP 105495 |
17.12 |
| 2026-04-03 00:00 |
21:22:01.55 |
-37:16:11.2 |
HIP 105495 |
17.08 |
| 2026-04-03 12:00 |
21:22:02.52 |
-37:16:13.7 |
HIP 105495 |
17.04 |
| 2026-04-04 00:00 |
21:22:03.47 |
-37:16:16.3 |
HIP 105495 |
17.01 |
| 2026-04-04 12:00 |
21:22:04.41 |
-37:16:19.0 |
HIP 105495 |
16.97 |
| 2026-04-05 00:00 |
21:22:05.34 |
-37:16:21.7 |
HIP 105495 |
16.93 |
| 2026-04-05 12:00 |
21:22:06.26 |
-37:16:24.5 |
HIP 105495 |
16.90 |
| 2026-04-06 00:00 |
21:22:07.17 |
-37:16:27.4 |
HIP 105495 |
16.87 |
| 2026-04-06 12:00 |
21:22:08.06 |
-37:16:30.4 |
HIP 105495 |
16.83 |
| 2026-04-07 00:00 |
21:22:08.95 |
-37:16:33.5 |
HIP 105495 |
16.80 |
| 2026-04-07 12:00 |
21:22:09.82 |
-37:16:36.6 |
HIP 105495 |
16.77 |
| 2026-04-08 00:00 |
21:22:10.68 |
-37:16:39.8 |
HIP 105495 |
16.73 |
| 2026-04-08 12:00 |
21:22:11.52 |
-37:16:43.1 |
HIP 105495 |
16.70 |
| 2026-04-09 00:00 |
21:22:12.35 |
-37:16:46.5 |
HIP 105495 |
16.67 |
| 2026-04-09 12:00 |
21:22:13.18 |
-37:16:50.0 |
HIP 105495 |
16.64 |
| 2026-04-10 00:00 |
21:22:13.98 |
-37:16:53.5 |
HIP 105495 |
16.61 |
| 2026-04-10 12:00 |
21:22:14.78 |
-37:16:57.1 |
HIP 105495 |
16.57 |
| 2026-04-11 00:00 |
21:22:15.56 |
-37:17:00.8 |
HIP 105495 |
16.54 |
| 2026-04-11 12:00 |
21:22:16.33 |
-37:17:04.5 |
HIP 105495 |
16.51 |
| 2026-04-12 00:00 |
21:22:17.09 |
-37:17:08.4 |
HIP 105495 |
16.48 |
| 2026-04-12 12:00 |
21:22:17.84 |
-37:17:12.3 |
HIP 105495 |
16.44 |
| 2026-04-13 00:00 |
21:22:18.57 |
-37:17:16.3 |
HIP 105495 |
16.41 |
| 2026-04-13 12:00 |
21:22:19.29 |
-37:17:20.3 |
HIP 105495 |
16.38 |
| 2026-04-14 00:00 |
21:22:20.00 |
-37:17:24.5 |
HIP 105495 |
16.34 |
| 2026-04-14 12:00 |
21:22:20.69 |
-37:17:28.7 |
HIP 105495 |
16.31 |
| 2026-04-15 00:00 |
21:22:21.37 |
-37:17:33.0 |
HIP 105495 |
16.28 |
| 2026-04-15 12:00 |
21:22:22.04 |
-37:17:37.4 |
HIP 105495 |
16.24 |
| 2026-04-16 00:00 |
21:22:22.69 |
-37:17:41.8 |
HIP 105495 |
16.20 |