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) |
| 2026-03-26 00:00 |
16:45:55.96 |
-23:54:55.2 |
HIP 82217 |
25.51 |
| 2026-03-26 12:00 |
16:45:53.84 |
-23:55:23.4 |
HIP 82217 |
25.93 |
| 2026-03-27 00:00 |
16:45:51.50 |
-23:55:51.2 |
HIP 82217 |
26.41 |
| 2026-03-27 12:00 |
16:45:48.94 |
-23:56:18.6 |
HIP 82217 |
26.95 |
| 2026-03-28 00:00 |
16:45:46.15 |
-23:56:45.7 |
HIP 82217 |
27.56 |
| 2026-03-28 12:00 |
16:45:43.13 |
-23:57:12.5 |
HIP 82217 |
28.22 |
| 2026-03-29 00:00 |
16:45:39.90 |
-23:57:38.9 |
HIP 82217 |
28.94 |
| 2026-03-29 12:00 |
16:45:36.44 |
-23:58:04.9 |
HIP 82217 |
29.72 |
| 2026-03-30 00:00 |
16:45:32.76 |
-23:58:30.6 |
HIP 82217 |
30.56 |
| 2026-03-30 12:00 |
16:45:28.85 |
-23:58:55.9 |
HIP 82217 |
31.45 |
| 2026-03-31 00:00 |
16:45:24.73 |
-23:59:20.8 |
HIP 82217 |
32.40 |
| 2026-03-31 12:00 |
16:45:20.38 |
-23:59:45.4 |
HIP 82217 |
33.41 |
| 2026-04-01 00:00 |
16:45:15.81 |
-24:00:09.6 |
HIP 82217 |
34.47 |
| 2026-04-01 12:00 |
16:45:11.02 |
-24:00:33.5 |
HIP 82217 |
35.58 |
| 2026-04-02 00:00 |
16:45:06.00 |
-24:00:56.9 |
HIP 82217 |
36.75 |
| 2026-04-02 12:00 |
16:45:00.77 |
-24:01:20.0 |
HIP 82217 |
37.97 |
| 2026-04-03 00:00 |
16:44:55.32 |
-24:01:42.7 |
HIP 82217 |
39.24 |
| 2026-04-03 12:00 |
16:44:49.64 |
-24:02:05.1 |
HIP 82217 |
40.56 |
| 2026-04-04 00:00 |
16:44:43.75 |
-24:02:27.1 |
HIP 82217 |
41.93 |
| 2026-04-04 12:00 |
16:44:37.64 |
-24:02:48.6 |
HIP 82217 |
43.36 |
| 2026-04-05 00:00 |
16:44:31.31 |
-24:03:09.8 |
HIP 82217 |
44.83 |
| 2026-04-05 12:00 |
16:44:24.76 |
-24:03:30.6 |
HIP 81713 |
45.56 |
| 2026-04-06 00:00 |
16:44:17.99 |
-24:03:51.0 |
HIP 81713 |
44.03 |
| 2026-04-06 12:00 |
16:44:11.00 |
-24:04:11.1 |
HIP 81713 |
42.46 |
| 2026-04-07 00:00 |
16:44:03.80 |
-24:04:30.7 |
HIP 81713 |
40.86 |
| 2026-04-07 12:00 |
16:43:56.38 |
-24:04:49.9 |
HIP 81713 |
39.23 |
| 2026-04-08 00:00 |
16:43:48.75 |
-24:05:08.8 |
HIP 81713 |
37.56 |
| 2026-04-08 12:00 |
16:43:40.90 |
-24:05:27.2 |
HIP 81713 |
35.87 |
| 2026-04-09 00:00 |
16:43:32.84 |
-24:05:45.2 |
HIP 81713 |
34.15 |
| 2026-04-09 12:00 |
16:43:24.56 |
-24:06:02.8 |
HIP 81713 |
32.41 |
| 2026-04-10 00:00 |
16:43:16.07 |
-24:06:20.0 |
HIP 81713 |
30.66 |
| 2026-04-10 12:00 |
16:43:07.37 |
-24:06:36.8 |
HIP 81713 |
28.89 |
| 2026-04-11 00:00 |
16:42:58.46 |
-24:06:53.2 |
HIP 81713 |
27.13 |
| 2026-04-11 12:00 |
16:42:49.34 |
-24:07:09.2 |
HIP 81713 |
25.38 |
| 2026-04-12 00:00 |
16:42:40.01 |
-24:07:24.7 |
HIP 81713 |
23.66 |
| 2026-04-12 12:00 |
16:42:30.47 |
-24:07:39.8 |
HIP 81713 |
21.99 |
| 2026-04-13 00:00 |
16:42:20.72 |
-24:07:54.6 |
HIP 81713 |
20.39 |
| 2026-04-13 12:00 |
16:42:10.77 |
-24:08:08.8 |
HIP 81713 |
18.90 |
| 2026-04-14 00:00 |
16:42:00.61 |
-24:08:22.7 |
HIP 81713 |
17.57 |
| 2026-04-14 12:00 |
16:41:50.24 |
-24:08:36.1 |
HIP 81713 |
16.45 |
| 2026-04-15 00:00 |
16:41:39.68 |
-24:08:49.1 |
HIP 81713 |
15.61 |
| 2026-04-15 12:00 |
16:41:28.91 |
-24:09:01.6 |
HIP 81713 |
15.12 |
| 2026-04-16 00:00 |
16:41:17.94 |
-24:09:13.8 |
HIP 81713 |
15.04 |