メタデータ
| 項目 |
値 |
| Designation |
32P/Comas Sola |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-05-01T13:45:17.645760Z |
| Orbit solution date (soln_date, UTC) |
2025-07-07T14:18:22Z |
| Obs used |
2867 |
| NEO |
- |
| M1 |
10.300 |
| K1 |
12.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2019-12-14.0000000 |
| e |
0.55667903 |
| q (au) |
1.994458 |
| a (au) |
4.498903 |
| i (deg) |
9.944091 |
| Ω (om, deg) |
57.665791 |
| ω (w, deg) |
53.300686 |
| M (ma, deg) |
194.682189 |
等級
散乱 + 全体線形
$$
M_a = (9.509 + 5.372\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.509 |
| n |
5.372 |
| gf |
0.800 |
| gb |
-0.881 |
| k |
0.999 |
| δ90 |
1.000 |
| 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 |
15:51:35.90 |
-23:13:19.3 |
HIP 77610 |
13.05 |
| 2026-07-29 12:00 |
15:51:34.20 |
-23:13:17.2 |
HIP 77610 |
12.68 |
| 2026-07-30 00:00 |
15:51:32.70 |
-23:13:15.6 |
HIP 77610 |
12.34 |
| 2026-07-30 12:00 |
15:51:31.39 |
-23:13:14.5 |
HIP 77610 |
12.05 |
| 2026-07-31 00:00 |
15:51:30.28 |
-23:13:13.9 |
HIP 77610 |
11.80 |
| 2026-07-31 12:00 |
15:51:29.35 |
-23:13:13.7 |
HIP 77610 |
11.59 |
| 2026-08-01 00:00 |
15:51:28.62 |
-23:13:14.1 |
HIP 77610 |
11.43 |
| 2026-08-01 12:00 |
15:51:28.08 |
-23:13:15.0 |
HIP 77610 |
11.30 |
| 2026-08-02 00:00 |
15:51:27.73 |
-23:13:16.4 |
HIP 77610 |
11.22 |
| 2026-08-02 12:00 |
15:51:27.57 |
-23:13:18.3 |
HIP 77610 |
11.18 |
| 2026-08-03 00:00 |
15:51:27.60 |
-23:13:20.7 |
HIP 77610 |
11.17 |
| 2026-08-03 12:00 |
15:51:27.82 |
-23:13:23.6 |
HIP 77610 |
11.22 |
| 2026-08-04 00:00 |
15:51:28.23 |
-23:13:27.0 |
HIP 77610 |
11.30 |
| 2026-08-04 12:00 |
15:51:28.83 |
-23:13:31.0 |
HIP 77610 |
11.42 |
| 2026-08-05 00:00 |
15:51:29.62 |
-23:13:35.4 |
HIP 77610 |
11.59 |
| 2026-08-05 12:00 |
15:51:30.60 |
-23:13:40.3 |
HIP 77610 |
11.80 |
| 2026-08-06 00:00 |
15:51:31.76 |
-23:13:45.8 |
HIP 77610 |
12.05 |
| 2026-08-06 12:00 |
15:51:33.11 |
-23:13:51.7 |
HIP 77610 |
12.34 |
| 2026-08-07 00:00 |
15:51:34.65 |
-23:13:58.2 |
HIP 77610 |
12.68 |
| 2026-08-07 12:00 |
15:51:36.38 |
-23:14:05.2 |
HIP 77610 |
13.06 |
| 2026-08-08 00:00 |
15:51:38.29 |
-23:14:12.6 |
HIP 77610 |
13.48 |
| 2026-08-08 12:00 |
15:51:40.39 |
-23:14:20.6 |
HIP 77610 |
13.95 |
| 2026-08-09 00:00 |
15:51:42.68 |
-23:14:29.1 |
HIP 77610 |
14.47 |
| 2026-08-09 12:00 |
15:51:45.15 |
-23:14:38.1 |
HIP 77610 |
15.02 |
| 2026-08-10 00:00 |
15:51:47.81 |
-23:14:47.6 |
HIP 77610 |
15.62 |
| 2026-08-10 12:00 |
15:51:50.65 |
-23:14:57.7 |
HIP 77610 |
16.27 |
| 2026-08-11 00:00 |
15:51:53.67 |
-23:15:08.2 |
HIP 77610 |
16.96 |
| 2026-08-11 12:00 |
15:51:56.88 |
-23:15:19.2 |
HIP 77610 |
17.69 |
| 2026-08-12 00:00 |
15:52:00.28 |
-23:15:30.7 |
HIP 77610 |
18.47 |
| 2026-08-12 12:00 |
15:52:03.85 |
-23:15:42.8 |
HIP 77610 |
19.29 |
| 2026-08-13 00:00 |
15:52:07.61 |
-23:15:55.3 |
HIP 77610 |
20.16 |
| 2026-08-13 12:00 |
15:52:11.55 |
-23:16:08.3 |
HIP 77610 |
21.07 |
| 2026-08-14 00:00 |
15:52:15.66 |
-23:16:21.9 |
HIP 77610 |
22.02 |
| 2026-08-14 12:00 |
15:52:19.96 |
-23:16:35.9 |
HIP 77610 |
23.02 |
| 2026-08-15 00:00 |
15:52:24.44 |
-23:16:50.4 |
HIP 77610 |
24.06 |
| 2026-08-15 12:00 |
15:52:29.10 |
-23:17:05.4 |
HIP 77610 |
25.14 |
| 2026-08-16 00:00 |
15:52:33.93 |
-23:17:20.9 |
HIP 77610 |
26.27 |
| 2026-08-16 12:00 |
15:52:38.95 |
-23:17:36.9 |
HIP 77610 |
27.43 |
| 2026-08-17 00:00 |
15:52:44.13 |
-23:17:53.4 |
HIP 77610 |
28.64 |
| 2026-08-17 12:00 |
15:52:49.50 |
-23:18:10.4 |
HIP 77610 |
29.89 |
| 2026-08-18 00:00 |
15:52:55.04 |
-23:18:27.8 |
HIP 77610 |
31.19 |
| 2026-08-18 12:00 |
15:53:00.75 |
-23:18:45.7 |
HIP 77960 |
31.58 |
| 2026-08-19 00:00 |
15:53:06.63 |
-23:19:04.2 |
HIP 77960 |
30.21 |