377P/Scotti
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
$$
M_a = (11.033 + 2.762\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.033 |
| n |
2.762 |
| gf |
0.905 |
| gb |
-0.938 |
| k |
1.000 |
| δ90 |
9.615 |
| 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 |
23:29:51.26 |
+03:19:03.0 |
HIP 116138 |
31.33 |
| 2026-02-03 12:00 |
23:30:05.94 |
+03:20:14.7 |
HIP 116138 |
27.49 |
| 2026-02-04 00:00 |
23:30:20.67 |
+03:21:26.9 |
HIP 116138 |
23.66 |
| 2026-02-04 12:00 |
23:30:35.44 |
+03:22:39.6 |
HIP 116138 |
19.81 |
| 2026-02-05 00:00 |
23:30:50.26 |
+03:23:52.8 |
HIP 116138 |
15.98 |
| 2026-02-05 12:00 |
23:31:05.13 |
+03:25:06.4 |
HIP 116138 |
12.17 |
| 2026-02-06 00:00 |
23:31:20.05 |
+03:26:20.6 |
HIP 116138 |
8.44 |
| 2026-02-06 12:00 |
23:31:35.01 |
+03:27:35.2 |
HIP 116138 |
5.01 |
| 2026-02-07 00:00 |
23:31:50.01 |
+03:28:50.3 |
HIP 116138 |
3.15 |
| 2026-02-07 12:00 |
23:32:05.07 |
+03:30:05.8 |
HIP 116138 |
5.11 |
| 2026-02-08 00:00 |
23:32:20.16 |
+03:31:21.8 |
HIP 116138 |
8.59 |
| 2026-02-08 12:00 |
23:32:35.30 |
+03:32:38.3 |
HIP 116223 |
10.85 |
| 2026-02-09 00:00 |
23:32:50.49 |
+03:33:55.3 |
HIP 116223 |
11.07 |
| 2026-02-09 12:00 |
23:33:05.71 |
+03:35:12.7 |
HIP 116223 |
12.63 |
| 2026-02-10 00:00 |
23:33:20.98 |
+03:36:30.5 |
HIP 116223 |
15.13 |
| 2026-02-10 12:00 |
23:33:36.29 |
+03:37:48.8 |
HIP 116223 |
18.20 |
| 2026-02-11 00:00 |
23:33:51.64 |
+03:39:07.5 |
HIP 116223 |
21.60 |
| 2026-02-11 12:00 |
23:34:07.04 |
+03:40:26.7 |
HIP 116344 |
24.36 |
| 2026-02-12 00:00 |
23:34:22.47 |
+03:41:46.3 |
HIP 116344 |
25.13 |
| 2026-02-12 12:00 |
23:34:37.94 |
+03:43:06.3 |
HIP 116433 |
24.13 |
| 2026-02-13 00:00 |
23:34:53.45 |
+03:44:26.8 |
HIP 116433 |
20.85 |
| 2026-02-13 12:00 |
23:35:08.99 |
+03:45:47.7 |
HIP 116433 |
17.89 |
| 2026-02-14 00:00 |
23:35:24.58 |
+03:47:09.0 |
HIP 116433 |
15.45 |
| 2026-02-14 12:00 |
23:35:40.20 |
+03:48:30.7 |
HIP 116433 |
13.83 |
| 2026-02-15 00:00 |
23:35:55.85 |
+03:49:52.8 |
HIP 116433 |
13.33 |
| 2026-02-15 12:00 |
23:36:11.54 |
+03:51:15.4 |
HIP 116433 |
14.08 |
| 2026-02-16 00:00 |
23:36:27.27 |
+03:52:38.3 |
HIP 116433 |
15.92 |
| 2026-02-16 12:00 |
23:36:43.03 |
+03:54:01.6 |
HIP 116433 |
18.53 |
| 2026-02-17 00:00 |
23:36:58.82 |
+03:55:25.4 |
HIP 116433 |
21.64 |
| 2026-02-17 12:00 |
23:37:14.65 |
+03:56:49.5 |
HIP 116433 |
25.07 |
| 2026-02-18 00:00 |
23:37:30.51 |
+03:58:14.0 |
HIP 116662 |
25.60 |
| 2026-02-18 12:00 |
23:37:46.40 |
+03:59:38.8 |
HIP 116662 |
22.26 |
| 2026-02-19 00:00 |
23:38:02.32 |
+04:01:04.1 |
HIP 116662 |
19.26 |
| 2026-02-19 12:00 |
23:38:18.27 |
+04:02:29.7 |
HIP 116662 |
16.79 |
| 2026-02-20 00:00 |
23:38:34.25 |
+04:03:55.7 |
HIP 116662 |
15.10 |
| 2026-02-20 12:00 |
23:38:50.26 |
+04:05:22.0 |
HIP 116662 |
14.49 |
| 2026-02-21 00:00 |
23:39:06.29 |
+04:06:48.7 |
HIP 116662 |
15.10 |
| 2026-02-21 12:00 |
23:39:22.36 |
+04:08:15.8 |
HIP 116662 |
16.80 |
| 2026-02-22 00:00 |
23:39:38.45 |
+04:09:43.2 |
HIP 116662 |
19.31 |
| 2026-02-22 12:00 |
23:39:54.57 |
+04:11:10.9 |
HIP 116662 |
22.37 |
| 2026-02-23 00:00 |
23:40:10.71 |
+04:12:39.0 |
HIP 116662 |
25.77 |
| 2026-02-23 12:00 |
23:40:26.88 |
+04:14:07.4 |
HIP 116662 |
29.42 |
| 2026-02-24 00:00 |
23:40:43.07 |
+04:15:36.1 |
HIP 116662 |
33.22 |