424P/La Sagra
メタデータ
| 項目 |
値 |
| Designation |
424P/La Sagra |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-08-16T14:00:44.933760Z |
| Orbit solution date (soln_date, UTC) |
2022-02-14T01:12:55Z |
| Obs used |
614 |
| NEO |
- |
| M1 |
17.800 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2021-06-06T12:36:39.744000Z |
| Discovery magnitude (MPC) |
20.60 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2016-05-02.0000000 |
| e |
0.69277912 |
| q (au) |
1.351983 |
| a (au) |
4.400689 |
| i (deg) |
8.637783 |
| Ω (om, deg) |
51.619990 |
| ω (w, deg) |
312.445906 |
| M (ma, deg) |
144.602315 |
等級
散乱 + 全体線形
$$
M_a = (17.866 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.866 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-0.862 |
| k |
0.990 |
| 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) |
| 2026-02-03 00:00 |
12:35:04.73 |
+04:15:53.5 |
HIP 61417 |
13.37 |
| 2026-02-03 12:00 |
12:34:58.66 |
+04:16:55.9 |
HIP 61417 |
14.56 |
| 2026-02-04 00:00 |
12:34:52.46 |
+04:17:58.9 |
HIP 61417 |
15.89 |
| 2026-02-04 12:00 |
12:34:46.14 |
+04:19:02.5 |
HIP 61417 |
17.34 |
| 2026-02-05 00:00 |
12:34:39.69 |
+04:20:06.8 |
HIP 61304 |
17.07 |
| 2026-02-05 12:00 |
12:34:33.11 |
+04:21:11.8 |
HIP 61304 |
16.09 |
| 2026-02-06 00:00 |
12:34:26.41 |
+04:22:17.4 |
HIP 61304 |
15.28 |
| 2026-02-06 12:00 |
12:34:19.58 |
+04:23:23.6 |
HIP 61304 |
14.69 |
| 2026-02-07 00:00 |
12:34:12.62 |
+04:24:30.5 |
HIP 61304 |
14.35 |
| 2026-02-07 12:00 |
12:34:05.55 |
+04:25:38.0 |
HIP 61304 |
14.29 |
| 2026-02-08 00:00 |
12:33:58.34 |
+04:26:46.1 |
HIP 61304 |
14.54 |
| 2026-02-08 12:00 |
12:33:51.02 |
+04:27:54.8 |
HIP 61304 |
15.09 |
| 2026-02-09 00:00 |
12:33:43.57 |
+04:29:04.1 |
HIP 61304 |
15.92 |
| 2026-02-09 12:00 |
12:33:35.99 |
+04:30:14.0 |
HIP 61304 |
17.00 |
| 2026-02-10 00:00 |
12:33:28.30 |
+04:31:24.5 |
HIP 61304 |
18.31 |
| 2026-02-10 12:00 |
12:33:20.49 |
+04:32:35.6 |
HIP 61304 |
19.80 |
| 2026-02-11 00:00 |
12:33:12.55 |
+04:33:47.2 |
HIP 61304 |
21.44 |
| 2026-02-11 12:00 |
12:33:04.50 |
+04:34:59.4 |
HIP 61304 |
23.22 |
| 2026-02-12 00:00 |
12:32:56.32 |
+04:36:12.2 |
HIP 61304 |
25.11 |
| 2026-02-12 12:00 |
12:32:48.03 |
+04:37:25.5 |
HIP 61304 |
27.10 |
| 2026-02-13 00:00 |
12:32:39.62 |
+04:38:39.4 |
HIP 61341 |
29.09 |
| 2026-02-13 12:00 |
12:32:31.10 |
+04:39:53.7 |
HIP 61104 |
28.89 |
| 2026-02-14 00:00 |
12:32:22.46 |
+04:41:08.6 |
HIP 61104 |
26.63 |
| 2026-02-14 12:00 |
12:32:13.70 |
+04:42:24.0 |
HIP 61104 |
24.39 |
| 2026-02-15 00:00 |
12:32:04.83 |
+04:43:39.9 |
HIP 61104 |
22.19 |
| 2026-02-15 12:00 |
12:31:55.85 |
+04:44:56.3 |
HIP 61104 |
20.05 |
| 2026-02-16 00:00 |
12:31:46.76 |
+04:46:13.2 |
HIP 61104 |
18.00 |
| 2026-02-16 12:00 |
12:31:37.55 |
+04:47:30.6 |
HIP 61104 |
16.11 |
| 2026-02-17 00:00 |
12:31:28.23 |
+04:48:48.4 |
HIP 61104 |
14.44 |
| 2026-02-17 12:00 |
12:31:18.81 |
+04:50:06.7 |
HIP 61104 |
13.09 |
| 2026-02-18 00:00 |
12:31:09.28 |
+04:51:25.4 |
HIP 61104 |
12.19 |
| 2026-02-18 12:00 |
12:30:59.64 |
+04:52:44.5 |
HIP 61104 |
11.87 |
| 2026-02-19 00:00 |
12:30:49.89 |
+04:54:04.1 |
HIP 61046 |
10.54 |
| 2026-02-19 12:00 |
12:30:40.04 |
+04:55:24.0 |
HIP 61046 |
9.08 |
| 2026-02-20 00:00 |
12:30:30.09 |
+04:56:44.4 |
HIP 61046 |
8.34 |
| 2026-02-20 12:00 |
12:30:20.03 |
+04:58:05.2 |
HIP 61046 |
8.53 |
| 2026-02-21 00:00 |
12:30:09.87 |
+04:59:26.3 |
HIP 61046 |
9.61 |
| 2026-02-21 12:00 |
12:29:59.61 |
+05:00:47.8 |
HIP 61046 |
11.36 |
| 2026-02-22 00:00 |
12:29:49.26 |
+05:02:09.7 |
HIP 60942 |
12.98 |
| 2026-02-22 12:00 |
12:29:38.80 |
+05:03:31.9 |
HIP 60942 |
13.50 |
| 2026-02-23 00:00 |
12:29:28.25 |
+05:04:54.4 |
HIP 60942 |
14.62 |
| 2026-02-23 12:00 |
12:29:17.61 |
+05:06:17.3 |
HIP 60942 |
16.22 |
| 2026-02-24 00:00 |
12:29:06.87 |
+05:07:40.4 |
HIP 60942 |
18.18 |