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 |
-0.503 |
| 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 |
07:08:48.62 |
+16:08:43.5 |
HIP 34437 |
6.46 |
| 2026-06-01 12:00 |
07:09:07.03 |
+16:08:32.3 |
HIP 34437 |
10.86 |
| 2026-06-02 00:00 |
07:09:25.48 |
+16:08:20.6 |
HIP 34437 |
15.29 |
| 2026-06-02 12:00 |
07:09:43.98 |
+16:08:08.6 |
HIP 34437 |
19.73 |
| 2026-06-03 00:00 |
07:10:02.53 |
+16:07:56.2 |
HIP 34437 |
24.18 |
| 2026-06-03 12:00 |
07:10:21.13 |
+16:07:43.4 |
HIP 34437 |
28.65 |
| 2026-06-04 00:00 |
07:10:39.78 |
+16:07:30.3 |
HIP 34540 |
31.57 |
| 2026-06-04 12:00 |
07:10:58.48 |
+16:07:16.7 |
HIP 34540 |
34.57 |
| 2026-06-05 00:00 |
07:11:17.22 |
+16:07:02.8 |
HIP 34909 |
30.13 |
| 2026-06-05 12:00 |
07:11:36.01 |
+16:06:48.4 |
HIP 34909 |
25.67 |
| 2026-06-06 00:00 |
07:11:54.84 |
+16:06:33.7 |
HIP 34909 |
21.21 |
| 2026-06-06 12:00 |
07:12:13.72 |
+16:06:18.6 |
HIP 34909 |
16.78 |
| 2026-06-07 00:00 |
07:12:32.64 |
+16:06:03.1 |
HIP 34909 |
12.42 |
| 2026-06-07 12:00 |
07:12:51.60 |
+16:05:47.2 |
HIP 34909 |
8.27 |
| 2026-06-08 00:00 |
07:13:10.61 |
+16:05:30.9 |
HIP 34909 |
4.91 |
| 2026-06-08 12:00 |
07:13:29.66 |
+16:05:14.3 |
HIP 34909 |
4.66 |
| 2026-06-09 00:00 |
07:13:48.76 |
+16:04:57.3 |
HIP 34909 |
7.84 |
| 2026-06-09 12:00 |
07:14:07.89 |
+16:04:39.8 |
HIP 34909 |
11.99 |
| 2026-06-10 00:00 |
07:14:27.06 |
+16:04:22.0 |
HIP 35071 |
13.18 |
| 2026-06-10 12:00 |
07:14:46.28 |
+16:04:03.8 |
HIP 35071 |
9.88 |
| 2026-06-11 00:00 |
07:15:05.53 |
+16:03:45.2 |
HIP 35071 |
8.02 |
| 2026-06-11 12:00 |
07:15:24.82 |
+16:03:26.3 |
HIP 35071 |
8.59 |
| 2026-06-12 00:00 |
07:15:44.15 |
+16:03:06.9 |
HIP 35071 |
11.25 |
| 2026-06-12 12:00 |
07:16:03.51 |
+16:02:47.2 |
HIP 35219 |
11.56 |
| 2026-06-13 00:00 |
07:16:22.92 |
+16:02:27.1 |
HIP 35219 |
8.22 |
| 2026-06-13 12:00 |
07:16:42.35 |
+16:02:06.6 |
HIP 35219 |
6.74 |
| 2026-06-14 00:00 |
07:17:01.83 |
+16:01:45.7 |
HIP 35219 |
8.19 |
| 2026-06-14 12:00 |
07:17:21.33 |
+16:01:24.4 |
HIP 35219 |
11.54 |
| 2026-06-15 00:00 |
07:17:40.87 |
+16:01:02.7 |
HIP 35219 |
15.61 |
| 2026-06-15 12:00 |
07:18:00.45 |
+16:00:40.7 |
HIP 35219 |
19.97 |
| 2026-06-16 00:00 |
07:18:20.05 |
+16:00:18.3 |
HIP 35266 |
24.11 |
| 2026-06-16 12:00 |
07:18:39.69 |
+15:59:55.5 |
HIP 35551 |
23.21 |
| 2026-06-17 00:00 |
07:18:59.35 |
+15:59:32.3 |
HIP 35551 |
19.07 |
| 2026-06-17 12:00 |
07:19:19.05 |
+15:59:08.8 |
HIP 35551 |
15.28 |
| 2026-06-18 00:00 |
07:19:38.77 |
+15:58:44.8 |
HIP 35551 |
12.18 |
| 2026-06-18 12:00 |
07:19:58.52 |
+15:58:20.5 |
HIP 35551 |
10.42 |
| 2026-06-19 00:00 |
07:20:18.30 |
+15:57:55.8 |
HIP 35551 |
10.70 |
| 2026-06-19 12:00 |
07:20:38.11 |
+15:57:30.8 |
HIP 35551 |
12.88 |
| 2026-06-20 00:00 |
07:20:57.94 |
+15:57:05.4 |
HIP 35551 |
16.23 |
| 2026-06-20 12:00 |
07:21:17.80 |
+15:56:39.6 |
HIP 35551 |
20.18 |
| 2026-06-21 00:00 |
07:21:37.68 |
+15:56:13.4 |
HIP 35818 |
24.04 |
| 2026-06-21 12:00 |
07:21:57.59 |
+15:55:46.9 |
HIP 35818 |
19.32 |
| 2026-06-22 00:00 |
07:22:17.52 |
+15:55:20.0 |
HIP 35818 |
14.66 |