メタデータ
| 項目 |
値 |
| Designation |
382P/Larson |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-07-08T09:40:46.269120Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T09:13:13Z |
| Obs used |
543 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
14.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-05-31T10:50:13.056000Z |
| Discovery magnitude (MPC) |
22.00 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) |
2015-02-14.0000000 |
| e |
0.27620614 |
| q (au) |
4.380367 |
| a (au) |
6.051954 |
| i (deg) |
7.867442 |
| Ω (om, deg) |
181.665365 |
| ω (w, deg) |
175.509381 |
| M (ma, deg) |
181.166011 |
等級
散乱 + 全体線形
$$
M_a = (5.637 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.637 |
| 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) |
| 2026-03-26 00:00 |
06:40:20.56 |
+15:38:29.0 |
HIP 31908 |
6.30 |
| 2026-03-26 12:00 |
06:40:25.54 |
+15:39:03.6 |
HIP 31908 |
6.58 |
| 2026-03-27 00:00 |
06:40:30.68 |
+15:39:37.9 |
HIP 31908 |
7.12 |
| 2026-03-27 12:00 |
06:40:35.96 |
+15:40:12.0 |
HIP 31908 |
7.90 |
| 2026-03-28 00:00 |
06:40:41.39 |
+15:40:45.9 |
HIP 31908 |
8.87 |
| 2026-03-28 12:00 |
06:40:46.96 |
+15:41:19.5 |
HIP 31908 |
9.98 |
| 2026-03-29 00:00 |
06:40:52.67 |
+15:41:52.9 |
HIP 31908 |
11.21 |
| 2026-03-29 12:00 |
06:40:58.53 |
+15:42:26.0 |
HIP 31908 |
12.52 |
| 2026-03-30 00:00 |
06:41:04.53 |
+15:42:58.8 |
HIP 31908 |
13.91 |
| 2026-03-30 12:00 |
06:41:10.68 |
+15:43:31.4 |
HIP 31908 |
15.37 |
| 2026-03-31 00:00 |
06:41:16.96 |
+15:44:03.8 |
HIP 31908 |
16.88 |
| 2026-03-31 12:00 |
06:41:23.38 |
+15:44:35.9 |
HIP 31908 |
18.44 |
| 2026-04-01 00:00 |
06:41:29.95 |
+15:45:07.7 |
HIP 31908 |
20.04 |
| 2026-04-01 12:00 |
06:41:36.66 |
+15:45:39.3 |
HIP 31908 |
21.69 |
| 2026-04-02 00:00 |
06:41:43.50 |
+15:46:10.6 |
HIP 31908 |
23.38 |
| 2026-04-02 12:00 |
06:41:50.48 |
+15:46:41.6 |
HIP 31908 |
25.10 |
| 2026-04-03 00:00 |
06:41:57.60 |
+15:47:12.4 |
HIP 32150 |
24.86 |
| 2026-04-03 12:00 |
06:42:04.86 |
+15:47:42.8 |
HIP 32150 |
23.55 |
| 2026-04-04 00:00 |
06:42:12.25 |
+15:48:13.1 |
HIP 32150 |
22.30 |
| 2026-04-04 12:00 |
06:42:19.78 |
+15:48:43.0 |
HIP 32150 |
21.13 |
| 2026-04-05 00:00 |
06:42:27.45 |
+15:49:12.7 |
HIP 32150 |
20.06 |
| 2026-04-05 12:00 |
06:42:35.25 |
+15:49:42.1 |
HIP 32150 |
19.13 |
| 2026-04-06 00:00 |
06:42:43.18 |
+15:50:11.2 |
HIP 32150 |
18.35 |
| 2026-04-06 12:00 |
06:42:51.25 |
+15:50:40.0 |
HIP 32150 |
17.76 |
| 2026-04-07 00:00 |
06:42:59.45 |
+15:51:08.6 |
HIP 32150 |
17.39 |
| 2026-04-07 12:00 |
06:43:07.78 |
+15:51:36.8 |
HIP 32150 |
17.26 |
| 2026-04-08 00:00 |
06:43:16.24 |
+15:52:04.8 |
HIP 32150 |
17.39 |
| 2026-04-08 12:00 |
06:43:24.84 |
+15:52:32.5 |
HIP 32150 |
17.79 |
| 2026-04-09 00:00 |
06:43:33.57 |
+15:52:59.9 |
HIP 32150 |
18.45 |
| 2026-04-09 12:00 |
06:43:42.42 |
+15:53:26.9 |
HIP 32150 |
19.34 |
| 2026-04-10 00:00 |
06:43:51.41 |
+15:53:53.7 |
HIP 32150 |
20.45 |
| 2026-04-10 12:00 |
06:44:00.52 |
+15:54:20.2 |
HIP 32150 |
21.76 |
| 2026-04-11 00:00 |
06:44:09.76 |
+15:54:46.4 |
HIP 32150 |
23.24 |
| 2026-04-11 12:00 |
06:44:19.13 |
+15:55:12.3 |
HIP 32150 |
24.86 |
| 2026-04-12 00:00 |
06:44:28.63 |
+15:55:37.9 |
HIP 32150 |
26.62 |
| 2026-04-12 12:00 |
06:44:38.25 |
+15:56:03.2 |
HIP 32150 |
28.48 |
| 2026-04-13 00:00 |
06:44:47.99 |
+15:56:28.2 |
HIP 32413 |
26.84 |
| 2026-04-13 12:00 |
06:44:57.87 |
+15:56:52.8 |
HIP 32413 |
25.05 |
| 2026-04-14 00:00 |
06:45:07.86 |
+15:57:17.2 |
HIP 32413 |
23.35 |
| 2026-04-14 12:00 |
06:45:17.98 |
+15:57:41.2 |
HIP 32413 |
21.79 |
| 2026-04-15 00:00 |
06:45:28.22 |
+15:58:04.9 |
HIP 32413 |
20.40 |
| 2026-04-15 12:00 |
06:45:38.59 |
+15:58:28.3 |
HIP 32413 |
19.23 |
| 2026-04-16 00:00 |
06:45:49.08 |
+15:58:51.4 |
HIP 32413 |
18.34 |