C/2023 V5 (Leonard)
メタデータ
| 項目 |
値 |
| Designation |
C/2023 V5 (Leonard) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-12-13T21:25:38.058240Z |
| Orbit solution date (soln_date, UTC) |
2024-04-13T16:42:53Z |
| Obs used |
148 |
| NEO |
- |
| M1 |
21.400 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-11-06T03:26:34.857600Z |
| Discovery magnitude (MPC) |
17.40 G |
| Discovery observatory (MPC) |
703 · Catalina Sky Survey |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2023-11-07.0000000 |
| e |
1.00813865 |
| q (au) |
0.846019 |
| a (au) |
-103.950734 |
| i (deg) |
73.557595 |
| Ω (om, deg) |
31.524093 |
| ω (w, deg) |
56.987549 |
| M (ma, deg) |
-0.034309 |
等級
散乱 + 全体線形
$$
M_a = (20.000 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
20.000 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-02-03 00:00 |
14:20:17.56 |
-34:16:02.3 |
HIP 70072 |
5.49 |
| 2026-02-03 12:00 |
14:20:15.01 |
-34:17:34.8 |
HIP 70072 |
4.09 |
| 2026-02-04 00:00 |
14:20:12.31 |
-34:19:06.7 |
HIP 70072 |
2.95 |
| 2026-02-04 12:00 |
14:20:09.47 |
-34:20:38.1 |
HIP 70072 |
2.49 |
| 2026-02-05 00:00 |
14:20:06.49 |
-34:22:08.9 |
HIP 70072 |
3.03 |
| 2026-02-05 12:00 |
14:20:03.36 |
-34:23:39.2 |
HIP 70072 |
4.20 |
| 2026-02-06 00:00 |
14:20:00.10 |
-34:25:08.9 |
HIP 70072 |
5.63 |
| 2026-02-06 12:00 |
14:19:56.69 |
-34:26:38.1 |
HIP 70072 |
7.16 |
| 2026-02-07 00:00 |
14:19:53.14 |
-34:28:06.6 |
HIP 70072 |
8.75 |
| 2026-02-07 12:00 |
14:19:49.45 |
-34:29:34.6 |
HIP 70072 |
10.36 |
| 2026-02-08 00:00 |
14:19:45.61 |
-34:31:02.0 |
HIP 69968 |
10.89 |
| 2026-02-08 12:00 |
14:19:41.63 |
-34:32:28.8 |
HIP 69968 |
11.22 |
| 2026-02-09 00:00 |
14:19:37.51 |
-34:33:55.1 |
HIP 69968 |
11.75 |
| 2026-02-09 12:00 |
14:19:33.25 |
-34:35:20.6 |
HIP 69968 |
12.46 |
| 2026-02-10 00:00 |
14:19:28.84 |
-34:36:45.6 |
HIP 69968 |
13.32 |
| 2026-02-10 12:00 |
14:19:24.29 |
-34:38:10.0 |
HIP 69968 |
14.31 |
| 2026-02-11 00:00 |
14:19:19.59 |
-34:39:33.7 |
HIP 69968 |
15.40 |
| 2026-02-11 12:00 |
14:19:14.76 |
-34:40:56.8 |
HIP 69968 |
16.59 |
| 2026-02-12 00:00 |
14:19:09.78 |
-34:42:19.3 |
HIP 69968 |
17.84 |
| 2026-02-12 12:00 |
14:19:04.65 |
-34:43:41.1 |
HIP 69968 |
19.16 |
| 2026-02-13 00:00 |
14:18:59.38 |
-34:45:02.2 |
HIP 69832 |
18.23 |
| 2026-02-13 12:00 |
14:18:53.97 |
-34:46:22.7 |
HIP 69832 |
17.16 |
| 2026-02-14 00:00 |
14:18:48.42 |
-34:47:42.5 |
HIP 69832 |
16.19 |
| 2026-02-14 12:00 |
14:18:42.73 |
-34:49:01.6 |
HIP 69832 |
15.32 |
| 2026-02-15 00:00 |
14:18:36.89 |
-34:50:20.1 |
HIP 69832 |
14.58 |
| 2026-02-15 12:00 |
14:18:30.91 |
-34:51:37.9 |
HIP 69832 |
14.00 |
| 2026-02-16 00:00 |
14:18:24.78 |
-34:52:54.9 |
HIP 69832 |
13.60 |
| 2026-02-16 12:00 |
14:18:18.52 |
-34:54:11.3 |
HIP 69832 |
13.40 |
| 2026-02-17 00:00 |
14:18:12.11 |
-34:55:26.9 |
HIP 69832 |
13.41 |
| 2026-02-17 12:00 |
14:18:05.56 |
-34:56:41.9 |
HIP 69832 |
13.65 |
| 2026-02-18 00:00 |
14:17:58.87 |
-34:57:56.1 |
HIP 69832 |
14.10 |
| 2026-02-18 12:00 |
14:17:52.04 |
-34:59:09.6 |
HIP 69832 |
14.75 |
| 2026-02-19 00:00 |
14:17:45.06 |
-35:00:22.3 |
HIP 69832 |
15.58 |
| 2026-02-19 12:00 |
14:17:37.95 |
-35:01:34.3 |
HIP 69832 |
16.56 |
| 2026-02-20 00:00 |
14:17:30.70 |
-35:02:45.5 |
HIP 69832 |
17.68 |
| 2026-02-20 12:00 |
14:17:23.31 |
-35:03:56.0 |
HIP 69832 |
18.91 |
| 2026-02-21 00:00 |
14:17:15.77 |
-35:05:05.8 |
HIP 69832 |
20.25 |
| 2026-02-21 12:00 |
14:17:08.10 |
-35:06:14.7 |
HIP 69832 |
21.66 |
| 2026-02-22 00:00 |
14:17:00.30 |
-35:07:22.9 |
HIP 69832 |
23.15 |
| 2026-02-22 12:00 |
14:16:52.35 |
-35:08:30.3 |
HIP 69832 |
24.71 |
| 2026-02-23 00:00 |
14:16:44.27 |
-35:09:37.0 |
HIP 69832 |
26.31 |
| 2026-02-23 12:00 |
14:16:36.05 |
-35:10:42.8 |
HIP 69832 |
27.97 |
| 2026-02-24 00:00 |
14:16:27.69 |
-35:11:47.8 |
HIP 69832 |
29.67 |