C/2007 VO53 (Spacewatch)
メタデータ
| 項目 |
値 |
| Designation |
C/2007 VO53 (Spacewatch) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-04-26T10:19:11.421120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:13Z |
| Obs used |
701 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2009-08-27.0000000 |
| e |
0.99960499 |
| q (au) |
4.842735 |
| a (au) |
12259.836506 |
| i (deg) |
86.994806 |
| Ω (om, deg) |
59.744414 |
| ω (w, deg) |
75.019866 |
| M (ma, deg) |
359.999824 |
等級
散乱 + 全体線形
$$
M_a = (1.761 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
1.761 |
| n |
6.000 |
| gf |
0.986 |
| gb |
-0.601 |
| k |
1.000 |
| δ90 |
9.997 |
| 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 |
15:33:36.52 |
-48:28:49.3 |
HIP 76053 |
19.66 |
| 2026-02-03 12:00 |
15:33:37.54 |
-48:29:24.5 |
HIP 76053 |
20.11 |
| 2026-02-04 00:00 |
15:33:38.52 |
-48:29:59.7 |
HIP 76053 |
20.56 |
| 2026-02-04 12:00 |
15:33:39.45 |
-48:30:34.9 |
HIP 76053 |
21.02 |
| 2026-02-05 00:00 |
15:33:40.34 |
-48:31:10.1 |
HIP 76053 |
21.47 |
| 2026-02-05 12:00 |
15:33:41.17 |
-48:31:45.1 |
HIP 76053 |
21.93 |
| 2026-02-06 00:00 |
15:33:41.96 |
-48:32:20.2 |
HIP 76053 |
22.38 |
| 2026-02-06 12:00 |
15:33:42.71 |
-48:32:55.1 |
HIP 76053 |
22.84 |
| 2026-02-07 00:00 |
15:33:43.40 |
-48:33:30.1 |
HIP 76053 |
23.29 |
| 2026-02-07 12:00 |
15:33:44.05 |
-48:34:04.9 |
HIP 76355 |
23.60 |
| 2026-02-08 00:00 |
15:33:44.65 |
-48:34:39.8 |
HIP 76355 |
23.19 |
| 2026-02-08 12:00 |
15:33:45.20 |
-48:35:14.5 |
HIP 76355 |
22.80 |
| 2026-02-09 00:00 |
15:33:45.70 |
-48:35:49.2 |
HIP 76355 |
22.42 |
| 2026-02-09 12:00 |
15:33:46.16 |
-48:36:23.8 |
HIP 76355 |
22.06 |
| 2026-02-10 00:00 |
15:33:46.57 |
-48:36:58.4 |
HIP 76355 |
21.71 |
| 2026-02-10 12:00 |
15:33:46.93 |
-48:37:32.9 |
HIP 76355 |
21.39 |
| 2026-02-11 00:00 |
15:33:47.24 |
-48:38:07.3 |
HIP 76355 |
21.08 |
| 2026-02-11 12:00 |
15:33:47.50 |
-48:38:41.7 |
HIP 76355 |
20.79 |
| 2026-02-12 00:00 |
15:33:47.71 |
-48:39:15.9 |
HIP 76355 |
20.52 |
| 2026-02-12 12:00 |
15:33:47.87 |
-48:39:50.1 |
HIP 76355 |
20.27 |
| 2026-02-13 00:00 |
15:33:47.99 |
-48:40:24.3 |
HIP 76171 |
19.88 |
| 2026-02-13 12:00 |
15:33:48.06 |
-48:40:58.3 |
HIP 76171 |
19.32 |
| 2026-02-14 00:00 |
15:33:48.07 |
-48:41:32.2 |
HIP 76171 |
18.77 |
| 2026-02-14 12:00 |
15:33:48.04 |
-48:42:06.1 |
HIP 76171 |
18.21 |
| 2026-02-15 00:00 |
15:33:47.96 |
-48:42:39.9 |
HIP 76171 |
17.65 |
| 2026-02-15 12:00 |
15:33:47.83 |
-48:43:13.6 |
HIP 76171 |
17.10 |
| 2026-02-16 00:00 |
15:33:47.65 |
-48:43:47.1 |
HIP 76171 |
16.54 |
| 2026-02-16 12:00 |
15:33:47.42 |
-48:44:20.6 |
HIP 76171 |
15.98 |
| 2026-02-17 00:00 |
15:33:47.15 |
-48:44:54.0 |
HIP 76171 |
15.43 |
| 2026-02-17 12:00 |
15:33:46.82 |
-48:45:27.3 |
HIP 76171 |
14.87 |
| 2026-02-18 00:00 |
15:33:46.44 |
-48:46:00.5 |
HIP 76171 |
14.32 |
| 2026-02-18 12:00 |
15:33:46.01 |
-48:46:33.6 |
HIP 76171 |
13.77 |
| 2026-02-19 00:00 |
15:33:45.54 |
-48:47:06.6 |
HIP 76171 |
13.21 |
| 2026-02-19 12:00 |
15:33:45.01 |
-48:47:39.4 |
HIP 76171 |
12.66 |
| 2026-02-20 00:00 |
15:33:44.44 |
-48:48:12.2 |
HIP 76171 |
12.10 |
| 2026-02-20 12:00 |
15:33:43.81 |
-48:48:44.8 |
HIP 76171 |
11.55 |
| 2026-02-21 00:00 |
15:33:43.14 |
-48:49:17.4 |
HIP 76171 |
11.00 |
| 2026-02-21 12:00 |
15:33:42.42 |
-48:49:49.8 |
HIP 76171 |
10.44 |
| 2026-02-22 00:00 |
15:33:41.65 |
-48:50:22.0 |
HIP 76171 |
9.89 |
| 2026-02-22 12:00 |
15:33:40.82 |
-48:50:54.2 |
HIP 76171 |
9.34 |
| 2026-02-23 00:00 |
15:33:39.95 |
-48:51:26.2 |
HIP 76171 |
8.79 |
| 2026-02-23 12:00 |
15:33:39.03 |
-48:51:58.2 |
HIP 76171 |
8.24 |
| 2026-02-24 00:00 |
15:33:38.06 |
-48:52:29.9 |
HIP 76171 |
7.68 |