202P/Scotti
メタデータ
| 項目 |
値 |
| Designation |
202P/Scotti |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-02-07T04:49:05.456640Z |
| Orbit solution date (soln_date, UTC) |
2025-03-06T13:42:30Z |
| Obs used |
449 |
| NEO |
- |
| M1 |
13.900 |
| K1 |
10.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2007-11-13.0000000 |
| e |
0.33043947 |
| q (au) |
2.526852 |
| a (au) |
3.773896 |
| i (deg) |
2.185340 |
| Ω (om, deg) |
194.588240 |
| ω (w, deg) |
255.594450 |
| M (ma, deg) |
299.207436 |
等級
散乱 + 全体線形
$$
M_a = (16.098 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.098 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.975 |
| 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) |
| 2026-02-03 00:00 |
13:47:35.46 |
-10:19:23.2 |
HIP 67315 |
9.42 |
| 2026-02-03 12:00 |
13:47:41.18 |
-10:19:40.9 |
HIP 67315 |
9.15 |
| 2026-02-04 00:00 |
13:47:46.66 |
-10:19:57.2 |
HIP 67315 |
9.09 |
| 2026-02-04 12:00 |
13:47:51.90 |
-10:20:12.2 |
HIP 67315 |
9.21 |
| 2026-02-05 00:00 |
13:47:56.91 |
-10:20:25.8 |
HIP 67315 |
9.49 |
| 2026-02-05 12:00 |
13:48:01.68 |
-10:20:38.1 |
HIP 67315 |
9.88 |
| 2026-02-06 00:00 |
13:48:06.21 |
-10:20:49.0 |
HIP 67315 |
10.35 |
| 2026-02-06 12:00 |
13:48:10.50 |
-10:20:58.5 |
HIP 67315 |
10.88 |
| 2026-02-07 00:00 |
13:48:14.55 |
-10:21:06.6 |
HIP 67315 |
11.43 |
| 2026-02-07 12:00 |
13:48:18.37 |
-10:21:13.4 |
HIP 67315 |
11.99 |
| 2026-02-08 00:00 |
13:48:21.94 |
-10:21:18.8 |
HIP 67315 |
12.55 |
| 2026-02-08 12:00 |
13:48:25.27 |
-10:21:22.8 |
HIP 67315 |
13.09 |
| 2026-02-09 00:00 |
13:48:28.36 |
-10:21:25.4 |
HIP 67315 |
13.59 |
| 2026-02-09 12:00 |
13:48:31.21 |
-10:21:26.7 |
HIP 67315 |
14.07 |
| 2026-02-10 00:00 |
13:48:33.81 |
-10:21:26.5 |
HIP 67315 |
14.50 |
| 2026-02-10 12:00 |
13:48:36.17 |
-10:21:25.0 |
HIP 67315 |
14.90 |
| 2026-02-11 00:00 |
13:48:38.29 |
-10:21:22.0 |
HIP 67315 |
15.24 |
| 2026-02-11 12:00 |
13:48:40.16 |
-10:21:17.7 |
HIP 67315 |
15.53 |
| 2026-02-12 00:00 |
13:48:41.79 |
-10:21:12.0 |
HIP 67315 |
15.77 |
| 2026-02-12 12:00 |
13:48:43.17 |
-10:21:04.8 |
HIP 67315 |
15.96 |
| 2026-02-13 00:00 |
13:48:44.31 |
-10:20:56.3 |
HIP 67315 |
16.09 |
| 2026-02-13 12:00 |
13:48:45.20 |
-10:20:46.4 |
HIP 67315 |
16.16 |
| 2026-02-14 00:00 |
13:48:45.85 |
-10:20:35.1 |
HIP 67315 |
16.17 |
| 2026-02-14 12:00 |
13:48:46.24 |
-10:20:22.4 |
HIP 67315 |
16.13 |
| 2026-02-15 00:00 |
13:48:46.39 |
-10:20:08.3 |
HIP 67315 |
16.02 |
| 2026-02-15 12:00 |
13:48:46.30 |
-10:19:52.8 |
HIP 67315 |
15.86 |
| 2026-02-16 00:00 |
13:48:45.96 |
-10:19:35.8 |
HIP 67315 |
15.63 |
| 2026-02-16 12:00 |
13:48:45.37 |
-10:19:17.5 |
HIP 67315 |
15.34 |
| 2026-02-17 00:00 |
13:48:44.53 |
-10:18:57.8 |
HIP 67315 |
14.99 |
| 2026-02-17 12:00 |
13:48:43.45 |
-10:18:36.7 |
HIP 67315 |
14.58 |
| 2026-02-18 00:00 |
13:48:42.12 |
-10:18:14.3 |
HIP 67315 |
14.11 |
| 2026-02-18 12:00 |
13:48:40.55 |
-10:17:50.4 |
HIP 67315 |
13.57 |
| 2026-02-19 00:00 |
13:48:38.73 |
-10:17:25.1 |
HIP 67315 |
12.97 |
| 2026-02-19 12:00 |
13:48:36.66 |
-10:16:58.5 |
HIP 67315 |
12.31 |
| 2026-02-20 00:00 |
13:48:34.35 |
-10:16:30.4 |
HIP 67315 |
11.59 |
| 2026-02-20 12:00 |
13:48:31.79 |
-10:16:01.0 |
HIP 67315 |
10.80 |
| 2026-02-21 00:00 |
13:48:28.99 |
-10:15:30.2 |
HIP 67315 |
9.96 |
| 2026-02-21 12:00 |
13:48:25.94 |
-10:14:58.1 |
HIP 67315 |
9.05 |
| 2026-02-22 00:00 |
13:48:22.65 |
-10:14:24.5 |
HIP 67315 |
8.08 |
| 2026-02-22 12:00 |
13:48:19.12 |
-10:13:49.6 |
HIP 67315 |
7.04 |
| 2026-02-23 00:00 |
13:48:15.34 |
-10:13:13.4 |
HIP 67315 |
5.95 |
| 2026-02-23 12:00 |
13:48:11.33 |
-10:12:35.7 |
HIP 67315 |
4.81 |
| 2026-02-24 00:00 |
13:48:07.07 |
-10:11:56.8 |
HIP 67315 |
3.61 |