メタデータ
| 項目 |
値 |
| Designation |
C/1932 H1 (Carrasco) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1931-11-29T19:41:48.048000Z |
| Orbit solution date (soln_date, UTC) |
2023-12-05T08:04:21Z |
| Obs used |
6 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1932-04-30.0000000 |
| e |
1.00010577 |
| q (au) |
2.318385 |
| a (au) |
-21919.100180 |
| i (deg) |
58.083496 |
| Ω (om, deg) |
18.797874 |
| ω (w, deg) |
109.807035 |
| M (ma, deg) |
0.000046 |
等級
散乱 + 全体線形
$$
M_a = (7.489 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.489 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.501 |
| 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) |
| 2026-06-01 00:00 |
22:32:11.40 |
-75:24:25.3 |
HIP 110719 |
33.57 |
| 2026-06-01 12:00 |
22:32:11.21 |
-75:24:39.4 |
HIP 110719 |
33.73 |
| 2026-06-02 00:00 |
22:32:10.98 |
-75:24:53.5 |
HIP 110719 |
33.88 |
| 2026-06-02 12:00 |
22:32:10.72 |
-75:25:07.6 |
HIP 110719 |
34.03 |
| 2026-06-03 00:00 |
22:32:10.43 |
-75:25:21.7 |
HIP 110719 |
34.19 |
| 2026-06-03 12:00 |
22:32:10.10 |
-75:25:35.9 |
HIP 110719 |
34.34 |
| 2026-06-04 00:00 |
22:32:09.75 |
-75:25:50.0 |
HIP 110719 |
34.49 |
| 2026-06-04 12:00 |
22:32:09.36 |
-75:26:04.2 |
HIP 110719 |
34.64 |
| 2026-06-05 00:00 |
22:32:08.93 |
-75:26:18.3 |
HIP 110719 |
34.79 |
| 2026-06-05 12:00 |
22:32:08.48 |
-75:26:32.5 |
HIP 110719 |
34.95 |
| 2026-06-06 00:00 |
22:32:07.99 |
-75:26:46.7 |
HIP 110719 |
35.10 |
| 2026-06-06 12:00 |
22:32:07.47 |
-75:27:00.8 |
HIP 110719 |
35.25 |
| 2026-06-07 00:00 |
22:32:06.92 |
-75:27:15.0 |
HIP 110719 |
35.40 |
| 2026-06-07 12:00 |
22:32:06.34 |
-75:27:29.2 |
HIP 110719 |
35.55 |
| 2026-06-08 00:00 |
22:32:05.72 |
-75:27:43.4 |
HIP 111427 |
35.70 |
| 2026-06-08 12:00 |
22:32:05.08 |
-75:27:57.5 |
HIP 111427 |
35.48 |
| 2026-06-09 00:00 |
22:32:04.40 |
-75:28:11.7 |
HIP 111427 |
35.26 |
| 2026-06-09 12:00 |
22:32:03.68 |
-75:28:25.8 |
HIP 111427 |
35.04 |
| 2026-06-10 00:00 |
22:32:02.94 |
-75:28:40.0 |
HIP 111427 |
34.82 |
| 2026-06-10 12:00 |
22:32:02.16 |
-75:28:54.2 |
HIP 111427 |
34.61 |
| 2026-06-11 00:00 |
22:32:01.35 |
-75:29:08.3 |
HIP 111427 |
34.39 |
| 2026-06-11 12:00 |
22:32:00.51 |
-75:29:22.4 |
HIP 111427 |
34.18 |
| 2026-06-12 00:00 |
22:31:59.64 |
-75:29:36.6 |
HIP 111427 |
33.97 |
| 2026-06-12 12:00 |
22:31:58.73 |
-75:29:50.7 |
HIP 111427 |
33.75 |
| 2026-06-13 00:00 |
22:31:57.79 |
-75:30:04.8 |
HIP 111427 |
33.54 |
| 2026-06-13 12:00 |
22:31:56.82 |
-75:30:18.9 |
HIP 111427 |
33.33 |
| 2026-06-14 00:00 |
22:31:55.82 |
-75:30:32.9 |
HIP 111427 |
33.13 |
| 2026-06-14 12:00 |
22:31:54.78 |
-75:30:47.0 |
HIP 111427 |
32.92 |
| 2026-06-15 00:00 |
22:31:53.72 |
-75:31:01.0 |
HIP 111427 |
32.71 |
| 2026-06-15 12:00 |
22:31:52.62 |
-75:31:15.1 |
HIP 111427 |
32.51 |
| 2026-06-16 00:00 |
22:31:51.49 |
-75:31:29.1 |
HIP 111427 |
32.31 |
| 2026-06-16 12:00 |
22:31:50.33 |
-75:31:43.1 |
HIP 111427 |
32.11 |
| 2026-06-17 00:00 |
22:31:49.13 |
-75:31:57.0 |
HIP 111427 |
31.91 |
| 2026-06-17 12:00 |
22:31:47.91 |
-75:32:11.0 |
HIP 111427 |
31.71 |
| 2026-06-18 00:00 |
22:31:46.65 |
-75:32:24.9 |
HIP 111427 |
31.51 |
| 2026-06-18 12:00 |
22:31:45.37 |
-75:32:38.8 |
HIP 111427 |
31.32 |
| 2026-06-19 00:00 |
22:31:44.05 |
-75:32:52.7 |
HIP 111427 |
31.12 |
| 2026-06-19 12:00 |
22:31:42.70 |
-75:33:06.5 |
HIP 111427 |
30.93 |
| 2026-06-20 00:00 |
22:31:41.32 |
-75:33:20.3 |
HIP 111427 |
30.74 |
| 2026-06-20 12:00 |
22:31:39.90 |
-75:33:34.1 |
HIP 111427 |
30.55 |
| 2026-06-21 00:00 |
22:31:38.46 |
-75:33:47.9 |
HIP 111427 |
30.37 |
| 2026-06-21 12:00 |
22:31:36.99 |
-75:34:01.6 |
HIP 111427 |
30.18 |
| 2026-06-22 00:00 |
22:31:35.48 |
-75:34:15.3 |
HIP 111427 |
30.00 |