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) |
| 2026-05-12 00:00 |
16:27:58.19 |
-24:09:13.3 |
HIP 80736 |
26.88 |
| 2026-05-12 12:00 |
16:27:39.46 |
-24:09:01.0 |
HIP 80736 |
29.47 |
| 2026-05-13 00:00 |
16:27:20.65 |
-24:08:48.2 |
HIP 80736 |
32.44 |
| 2026-05-13 12:00 |
16:27:01.77 |
-24:08:35.0 |
HIP 80462 |
29.46 |
| 2026-05-14 00:00 |
16:26:42.81 |
-24:08:21.3 |
HIP 80462 |
26.52 |
| 2026-05-14 12:00 |
16:26:23.79 |
-24:08:07.2 |
HIP 80462 |
24.01 |
| 2026-05-15 00:00 |
16:26:04.69 |
-24:07:52.7 |
HIP 80462 |
22.07 |
| 2026-05-15 12:00 |
16:25:45.53 |
-24:07:37.7 |
HIP 80462 |
20.88 |
| 2026-05-16 00:00 |
16:25:26.31 |
-24:07:22.4 |
HIP 80462 |
20.57 |
| 2026-05-16 12:00 |
16:25:07.03 |
-24:07:06.6 |
HIP 80462 |
21.20 |
| 2026-05-17 00:00 |
16:24:47.70 |
-24:06:50.3 |
HIP 80462 |
22.69 |
| 2026-05-17 12:00 |
16:24:28.32 |
-24:06:33.7 |
HIP 80462 |
24.90 |
| 2026-05-18 00:00 |
16:24:08.88 |
-24:06:16.6 |
HIP 80224 |
26.83 |
| 2026-05-18 12:00 |
16:23:49.41 |
-24:05:59.2 |
HIP 80224 |
23.73 |
| 2026-05-19 00:00 |
16:23:29.89 |
-24:05:41.3 |
HIP 80224 |
21.11 |
| 2026-05-19 12:00 |
16:23:10.33 |
-24:05:23.1 |
HIP 80224 |
19.19 |
| 2026-05-20 00:00 |
16:22:50.74 |
-24:05:04.4 |
HIP 80196 |
18.14 |
| 2026-05-20 12:00 |
16:22:31.12 |
-24:04:45.4 |
HIP 80196 |
17.23 |
| 2026-05-21 00:00 |
16:22:11.47 |
-24:04:26.0 |
HIP 80196 |
17.47 |
| 2026-05-21 12:00 |
16:21:51.79 |
-24:04:06.2 |
HIP 80079 |
17.85 |
| 2026-05-22 00:00 |
16:21:32.09 |
-24:03:46.0 |
HIP 80079 |
13.86 |
| 2026-05-22 12:00 |
16:21:12.38 |
-24:03:25.5 |
HIP 80079 |
10.31 |
| 2026-05-23 00:00 |
16:20:52.65 |
-24:03:04.6 |
HIP 80079 |
7.81 |
| 2026-05-23 12:00 |
16:20:32.90 |
-24:02:43.4 |
HIP 80079 |
7.53 |
| 2026-05-24 00:00 |
16:20:13.15 |
-24:02:21.8 |
HIP 80079 |
9.66 |
| 2026-05-24 12:00 |
16:19:53.39 |
-24:02:00.0 |
HIP 80079 |
13.08 |
| 2026-05-25 00:00 |
16:19:33.63 |
-24:01:37.6 |
HIP 80029 |
15.86 |
| 2026-05-25 12:00 |
16:19:13.87 |
-24:01:15.1 |
HIP 80029 |
18.39 |
| 2026-05-26 00:00 |
16:18:54.12 |
-24:00:52.1 |
HIP 80029 |
21.58 |
| 2026-05-26 12:00 |
16:18:34.37 |
-24:00:28.9 |
HIP 79806 |
22.08 |
| 2026-05-27 00:00 |
16:18:14.62 |
-24:00:05.4 |
HIP 79806 |
18.89 |
| 2026-05-27 12:00 |
16:17:54.90 |
-23:59:41.5 |
HIP 79806 |
16.34 |
| 2026-05-28 00:00 |
16:17:35.18 |
-23:59:17.4 |
HIP 79806 |
14.78 |
| 2026-05-28 12:00 |
16:17:15.49 |
-23:58:52.9 |
HIP 79806 |
14.51 |
| 2026-05-29 00:00 |
16:16:55.82 |
-23:58:28.2 |
HIP 79806 |
15.61 |
| 2026-05-29 12:00 |
16:16:36.17 |
-23:58:03.2 |
HIP 79806 |
17.82 |
| 2026-05-30 00:00 |
16:16:16.55 |
-23:57:37.9 |
HIP 79740 |
19.42 |
| 2026-05-30 12:00 |
16:15:56.96 |
-23:57:12.3 |
HIP 79643 |
15.94 |
| 2026-05-31 00:00 |
16:15:37.40 |
-23:56:46.5 |
HIP 79643 |
12.91 |
| 2026-05-31 12:00 |
16:15:17.88 |
-23:56:20.5 |
HIP 79643 |
10.94 |
| 2026-06-01 00:00 |
16:14:58.40 |
-23:55:54.2 |
HIP 79643 |
10.62 |
| 2026-06-01 12:00 |
16:14:38.96 |
-23:55:27.6 |
HIP 79643 |
12.07 |
| 2026-06-02 00:00 |
16:14:19.56 |
-23:55:00.8 |
HIP 79557 |
9.46 |