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) |
| 2026-03-26 00:00 |
22:34:55.90 |
-10:13:12.1 |
HIP 111364 |
25.78 |
| 2026-03-26 12:00 |
22:35:17.17 |
-10:11:04.2 |
HIP 111364 |
31.08 |
| 2026-03-27 00:00 |
22:35:38.39 |
-10:08:56.5 |
HIP 111364 |
36.47 |
| 2026-03-27 12:00 |
22:35:59.56 |
-10:06:49.0 |
HIP 111398 |
41.14 |
| 2026-03-28 00:00 |
22:36:20.69 |
-10:04:41.7 |
HIP 111822 |
38.65 |
| 2026-03-28 12:00 |
22:36:41.76 |
-10:02:34.6 |
HIP 111822 |
33.62 |
| 2026-03-29 00:00 |
22:37:02.79 |
-10:00:27.8 |
HIP 111822 |
28.82 |
| 2026-03-29 12:00 |
22:37:23.77 |
-09:58:21.1 |
HIP 111822 |
24.37 |
| 2026-03-30 00:00 |
22:37:44.70 |
-09:56:14.7 |
HIP 111822 |
20.49 |
| 2026-03-30 12:00 |
22:38:05.59 |
-09:54:08.6 |
HIP 111822 |
17.55 |
| 2026-03-31 00:00 |
22:38:26.42 |
-09:52:02.6 |
HIP 111843 |
15.56 |
| 2026-03-31 12:00 |
22:38:47.20 |
-09:49:57.0 |
HIP 111843 |
13.70 |
| 2026-04-01 00:00 |
22:39:07.92 |
-09:47:51.5 |
HIP 111843 |
13.95 |
| 2026-04-01 12:00 |
22:39:28.60 |
-09:45:46.3 |
HIP 111843 |
16.19 |
| 2026-04-02 00:00 |
22:39:49.22 |
-09:43:41.4 |
HIP 111843 |
19.75 |
| 2026-04-02 12:00 |
22:40:09.79 |
-09:41:36.7 |
HIP 111910 |
20.06 |
| 2026-04-03 00:00 |
22:40:30.30 |
-09:39:32.2 |
HIP 111910 |
18.81 |
| 2026-04-03 12:00 |
22:40:50.76 |
-09:37:28.0 |
HIP 111910 |
19.10 |
| 2026-04-04 00:00 |
22:41:11.17 |
-09:35:24.1 |
HIP 111910 |
20.86 |
| 2026-04-04 12:00 |
22:41:31.52 |
-09:33:20.5 |
HIP 111910 |
23.75 |
| 2026-04-05 00:00 |
22:41:51.81 |
-09:31:17.2 |
HIP 112109 |
25.72 |
| 2026-04-05 12:00 |
22:42:12.05 |
-09:29:14.1 |
HIP 112156 |
23.19 |
| 2026-04-06 00:00 |
22:42:32.23 |
-09:27:11.3 |
HIP 112156 |
19.17 |
| 2026-04-06 12:00 |
22:42:52.35 |
-09:25:08.8 |
HIP 112156 |
15.99 |
| 2026-04-07 00:00 |
22:43:12.42 |
-09:23:06.6 |
HIP 112156 |
14.20 |
| 2026-04-07 12:00 |
22:43:32.42 |
-09:21:04.7 |
HIP 112156 |
14.30 |
| 2026-04-08 00:00 |
22:43:52.36 |
-09:19:03.1 |
HIP 112156 |
16.25 |
| 2026-04-08 12:00 |
22:44:12.25 |
-09:17:01.8 |
HIP 112156 |
19.50 |
| 2026-04-09 00:00 |
22:44:32.07 |
-09:15:00.8 |
HIP 112156 |
23.49 |
| 2026-04-09 12:00 |
22:44:51.83 |
-09:13:00.1 |
HIP 112346 |
26.64 |
| 2026-04-10 00:00 |
22:45:11.52 |
-09:10:59.8 |
HIP 112346 |
27.77 |
| 2026-04-10 12:00 |
22:45:31.16 |
-09:08:59.8 |
HIP 112346 |
29.78 |
| 2026-04-11 00:00 |
22:45:50.73 |
-09:07:00.1 |
HIP 112346 |
32.52 |
| 2026-04-11 12:00 |
22:46:10.23 |
-09:05:00.8 |
HIP 112572 |
34.39 |
| 2026-04-12 00:00 |
22:46:29.67 |
-09:03:01.8 |
HIP 112572 |
32.03 |
| 2026-04-12 12:00 |
22:46:49.05 |
-09:01:03.2 |
HIP 112572 |
30.39 |
| 2026-04-13 00:00 |
22:47:08.35 |
-08:59:04.9 |
HIP 112656 |
27.41 |
| 2026-04-13 12:00 |
22:47:27.59 |
-08:57:07.0 |
HIP 112656 |
22.32 |
| 2026-04-14 00:00 |
22:47:46.77 |
-08:55:09.4 |
HIP 112656 |
17.27 |
| 2026-04-14 12:00 |
22:48:05.87 |
-08:53:12.2 |
HIP 112656 |
12.32 |
| 2026-04-15 00:00 |
22:48:24.90 |
-08:51:15.4 |
HIP 112656 |
7.57 |
| 2026-04-15 12:00 |
22:48:43.86 |
-08:49:19.0 |
HIP 112656 |
3.85 |
| 2026-04-16 00:00 |
22:49:02.75 |
-08:47:23.0 |
HIP 112656 |
4.86 |