メタデータ
| 項目 |
値 |
| Designation |
377P/Scotti |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-07-10T01:54:37.517760Z |
| Orbit solution date (soln_date, UTC) |
2022-07-06T03:13:02Z |
| Obs used |
192 |
| NEO |
- |
| M1 |
12.300 |
| K1 |
6.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-03-09T02:38:12.768000Z |
| Discovery magnitude (MPC) |
20.30 G |
| Discovery observatory (MPC) |
J04 · ESA Optical Ground Station, Tenerife |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-07-04.0000000 |
| e |
0.25147638 |
| q (au) |
5.036392 |
| a (au) |
6.728435 |
| i (deg) |
9.016997 |
| Ω (om, deg) |
226.030194 |
| ω (w, deg) |
354.469351 |
| M (ma, deg) |
235.870097 |
等級
散乱 + 全体線形
$$
M_a = (11.055 + 2.748\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.055 |
| n |
2.748 |
| gf |
0.931 |
| gb |
-0.938 |
| k |
1.000 |
| δ90 |
9.697 |
| 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 |
00:29:20.77 |
+09:23:49.3 |
HIP 2332 |
19.51 |
| 2026-06-01 12:00 |
00:29:31.25 |
+09:25:06.5 |
HIP 2332 |
17.44 |
| 2026-06-02 00:00 |
00:29:41.65 |
+09:26:23.3 |
HIP 2332 |
15.64 |
| 2026-06-02 12:00 |
00:29:51.97 |
+09:27:39.7 |
HIP 2332 |
14.21 |
| 2026-06-03 00:00 |
00:30:02.21 |
+09:28:55.6 |
HIP 2332 |
13.24 |
| 2026-06-03 12:00 |
00:30:12.37 |
+09:30:11.1 |
HIP 2332 |
12.84 |
| 2026-06-04 00:00 |
00:30:22.44 |
+09:31:26.1 |
HIP 2332 |
13.03 |
| 2026-06-04 12:00 |
00:30:32.43 |
+09:32:40.7 |
HIP 2332 |
13.78 |
| 2026-06-05 00:00 |
00:30:42.34 |
+09:33:54.9 |
HIP 2332 |
14.99 |
| 2026-06-05 12:00 |
00:30:52.16 |
+09:35:08.6 |
HIP 2332 |
16.55 |
| 2026-06-06 00:00 |
00:31:01.90 |
+09:36:21.8 |
HIP 2441 |
18.04 |
| 2026-06-06 12:00 |
00:31:11.56 |
+09:37:34.6 |
HIP 2410 |
19.10 |
| 2026-06-07 00:00 |
00:31:21.13 |
+09:38:46.9 |
HIP 2410 |
19.06 |
| 2026-06-07 12:00 |
00:31:30.61 |
+09:39:58.7 |
HIP 2410 |
19.39 |
| 2026-06-08 00:00 |
00:31:40.01 |
+09:41:10.1 |
HIP 2410 |
20.05 |
| 2026-06-08 12:00 |
00:31:49.32 |
+09:42:21.0 |
HIP 2410 |
21.00 |
| 2026-06-09 00:00 |
00:31:58.54 |
+09:43:31.4 |
HIP 2410 |
22.19 |
| 2026-06-09 12:00 |
00:32:07.68 |
+09:44:41.3 |
HIP 2640 |
20.05 |
| 2026-06-10 00:00 |
00:32:16.72 |
+09:45:50.7 |
HIP 2640 |
17.76 |
| 2026-06-10 12:00 |
00:32:25.68 |
+09:46:59.7 |
HIP 2640 |
15.57 |
| 2026-06-11 00:00 |
00:32:34.55 |
+09:48:08.1 |
HIP 2640 |
13.50 |
| 2026-06-11 12:00 |
00:32:43.32 |
+09:49:16.1 |
HIP 2640 |
11.60 |
| 2026-06-12 00:00 |
00:32:52.01 |
+09:50:23.5 |
HIP 2640 |
9.96 |
| 2026-06-12 12:00 |
00:33:00.60 |
+09:51:30.4 |
HIP 2640 |
8.70 |
| 2026-06-13 00:00 |
00:33:09.10 |
+09:52:36.8 |
HIP 2640 |
7.98 |
| 2026-06-13 12:00 |
00:33:17.51 |
+09:53:42.7 |
HIP 2640 |
7.94 |
| 2026-06-14 00:00 |
00:33:25.83 |
+09:54:48.1 |
HIP 2640 |
8.56 |
| 2026-06-14 12:00 |
00:33:34.05 |
+09:55:52.9 |
HIP 2640 |
9.69 |
| 2026-06-15 00:00 |
00:33:42.18 |
+09:56:57.2 |
HIP 2640 |
11.18 |
| 2026-06-15 12:00 |
00:33:50.22 |
+09:58:01.0 |
HIP 2640 |
12.87 |
| 2026-06-16 00:00 |
00:33:58.15 |
+09:59:04.2 |
HIP 2640 |
14.70 |
| 2026-06-16 12:00 |
00:34:06.00 |
+10:00:06.9 |
HIP 2640 |
16.60 |
| 2026-06-17 00:00 |
00:34:13.75 |
+10:01:09.0 |
HIP 2695 |
16.84 |
| 2026-06-17 12:00 |
00:34:21.40 |
+10:02:10.6 |
HIP 2695 |
16.01 |
| 2026-06-18 00:00 |
00:34:28.95 |
+10:03:11.7 |
HIP 2695 |
15.44 |
| 2026-06-18 12:00 |
00:34:36.41 |
+10:04:12.1 |
HIP 2784 |
14.25 |
| 2026-06-19 00:00 |
00:34:43.77 |
+10:05:12.1 |
HIP 2784 |
12.22 |
| 2026-06-19 12:00 |
00:34:51.03 |
+10:06:11.4 |
HIP 2784 |
10.23 |
| 2026-06-20 00:00 |
00:34:58.19 |
+10:07:10.2 |
HIP 2784 |
8.30 |
| 2026-06-20 12:00 |
00:35:05.26 |
+10:08:08.4 |
HIP 2784 |
6.44 |
| 2026-06-21 00:00 |
00:35:12.22 |
+10:09:06.0 |
HIP 2784 |
4.72 |
| 2026-06-21 12:00 |
00:35:19.09 |
+10:10:03.1 |
HIP 2784 |
3.30 |
| 2026-06-22 00:00 |
00:35:25.85 |
+10:10:59.6 |
HIP 2784 |
2.65 |