メタデータ
| 項目 |
値 |
| Designation |
416P/Scotti |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-02-07T12:56:21.298560Z |
| Orbit solution date (soln_date, UTC) |
2025-04-24T09:42:34Z |
| Obs used |
138 |
| NEO |
- |
| M1 |
16.100 |
| 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) |
2015-12-07.0000000 |
| e |
0.45570137 |
| q (au) |
2.180164 |
| a (au) |
4.005456 |
| i (deg) |
3.365426 |
| Ω (om, deg) |
355.801740 |
| ω (w, deg) |
134.673507 |
| M (ma, deg) |
126.940382 |
等級
散乱 + 全体線形
$$
M_a = (15.729 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.729 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.558 |
| k |
0.800 |
| 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) |
| 2026-09-20 00:00 |
22:44:23.18 |
-09:01:03.2 |
HIP 112156 |
22.16 |
| 2026-09-20 12:00 |
22:44:06.88 |
-09:02:30.2 |
HIP 112156 |
17.89 |
| 2026-09-21 00:00 |
22:43:50.65 |
-09:03:56.6 |
HIP 112156 |
13.64 |
| 2026-09-21 12:00 |
22:43:34.50 |
-09:05:22.4 |
HIP 112156 |
9.41 |
| 2026-09-22 00:00 |
22:43:18.44 |
-09:06:47.6 |
HIP 112156 |
5.23 |
| 2026-09-22 12:00 |
22:43:02.47 |
-09:08:12.2 |
HIP 112156 |
1.25 |
| 2026-09-23 00:00 |
22:42:46.58 |
-09:09:36.2 |
HIP 112156 |
3.28 |
| 2026-09-23 12:00 |
22:42:30.78 |
-09:10:59.5 |
HIP 112156 |
7.36 |
| 2026-09-24 00:00 |
22:42:15.08 |
-09:12:22.1 |
HIP 112156 |
11.46 |
| 2026-09-24 12:00 |
22:41:59.47 |
-09:13:44.1 |
HIP 112156 |
15.54 |
| 2026-09-25 00:00 |
22:41:43.95 |
-09:15:05.4 |
HIP 112156 |
19.60 |
| 2026-09-25 12:00 |
22:41:28.54 |
-09:16:26.0 |
HIP 111910 |
20.55 |
| 2026-09-26 00:00 |
22:41:13.23 |
-09:17:45.9 |
HIP 111910 |
16.56 |
| 2026-09-26 12:00 |
22:40:58.03 |
-09:19:05.0 |
HIP 111910 |
12.62 |
| 2026-09-27 00:00 |
22:40:42.93 |
-09:20:23.5 |
HIP 111910 |
8.72 |
| 2026-09-27 12:00 |
22:40:27.94 |
-09:21:41.2 |
HIP 111910 |
4.95 |
| 2026-09-28 00:00 |
22:40:13.06 |
-09:22:58.1 |
HIP 111910 |
1.90 |
| 2026-09-28 12:00 |
22:39:58.29 |
-09:24:14.3 |
HIP 111910 |
3.57 |
| 2026-09-29 00:00 |
22:39:43.64 |
-09:25:29.7 |
HIP 111910 |
7.16 |
| 2026-09-29 12:00 |
22:39:29.11 |
-09:26:44.4 |
HIP 111910 |
10.88 |
| 2026-09-30 00:00 |
22:39:14.69 |
-09:27:58.2 |
HIP 111910 |
14.60 |
| 2026-09-30 12:00 |
22:39:00.40 |
-09:29:11.2 |
HIP 111910 |
18.31 |
| 2026-10-01 00:00 |
22:38:46.23 |
-09:30:23.4 |
HIP 111910 |
21.99 |
| 2026-10-01 12:00 |
22:38:32.19 |
-09:31:34.8 |
HIP 111637 |
25.16 |
| 2026-10-02 00:00 |
22:38:18.28 |
-09:32:45.4 |
HIP 111637 |
22.42 |
| 2026-10-02 12:00 |
22:38:04.50 |
-09:33:55.1 |
HIP 111637 |
19.97 |
| 2026-10-03 00:00 |
22:37:50.85 |
-09:35:03.9 |
HIP 111637 |
17.93 |
| 2026-10-03 12:00 |
22:37:37.33 |
-09:36:11.9 |
HIP 111637 |
16.43 |
| 2026-10-04 00:00 |
22:37:23.95 |
-09:37:18.9 |
HIP 111637 |
15.59 |
| 2026-10-04 12:00 |
22:37:10.71 |
-09:38:25.1 |
HIP 111637 |
15.50 |
| 2026-10-05 00:00 |
22:36:57.61 |
-09:39:30.4 |
HIP 111637 |
16.15 |
| 2026-10-05 12:00 |
22:36:44.65 |
-09:40:34.8 |
HIP 111637 |
17.44 |
| 2026-10-06 00:00 |
22:36:31.84 |
-09:41:38.3 |
HIP 111637 |
19.21 |
| 2026-10-06 12:00 |
22:36:19.17 |
-09:42:40.8 |
HIP 111637 |
21.32 |
| 2026-10-07 00:00 |
22:36:06.65 |
-09:43:42.4 |
HIP 111637 |
23.67 |
| 2026-10-07 12:00 |
22:35:54.29 |
-09:44:43.0 |
HIP 111637 |
26.19 |
| 2026-10-08 00:00 |
22:35:42.07 |
-09:45:42.7 |
HIP 111398 |
25.26 |
| 2026-10-08 12:00 |
22:35:30.01 |
-09:46:41.4 |
HIP 111398 |
22.93 |
| 2026-10-09 00:00 |
22:35:18.11 |
-09:47:39.1 |
HIP 111398 |
20.84 |
| 2026-10-09 12:00 |
22:35:06.36 |
-09:48:35.9 |
HIP 111398 |
19.05 |
| 2026-10-10 00:00 |
22:34:54.78 |
-09:49:31.6 |
HIP 111398 |
17.61 |
| 2026-10-10 12:00 |
22:34:43.35 |
-09:50:26.4 |
HIP 111398 |
16.61 |
| 2026-10-11 00:00 |
22:34:32.09 |
-09:51:20.1 |
HIP 111398 |
16.10 |