メタデータ
| 項目 |
値 |
| Designation |
314P/Montani |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-10-07T20:49:44.149440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:21Z |
| Obs used |
384 |
| NEO |
- |
| M1 |
12.600 |
| K1 |
5.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-10-21.0000000 |
| e |
0.41595010 |
| q (au) |
4.249163 |
| a (au) |
7.275343 |
| i (deg) |
3.976588 |
| Ω (om, deg) |
267.703383 |
| ω (w, deg) |
213.407905 |
| M (ma, deg) |
268.897663 |
等級
散乱 + 全体線形
$$
M_a = (10.942 + 2.639\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.942 |
| n |
2.639 |
| gf |
1.000 |
| gb |
-0.944 |
| 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) |
| 2026-09-20 00:00 |
19:58:41.53 |
-18:09:12.5 |
HIP 98339 |
3.55 |
| 2026-09-20 12:00 |
19:58:38.27 |
-18:09:26.0 |
HIP 98339 |
3.86 |
| 2026-09-21 00:00 |
19:58:35.10 |
-18:09:39.2 |
HIP 98339 |
4.29 |
| 2026-09-21 12:00 |
19:58:32.03 |
-18:09:52.2 |
HIP 98339 |
4.79 |
| 2026-09-22 00:00 |
19:58:29.06 |
-18:10:04.9 |
HIP 98339 |
5.34 |
| 2026-09-22 12:00 |
19:58:26.18 |
-18:10:17.4 |
HIP 98339 |
5.90 |
| 2026-09-23 00:00 |
19:58:23.40 |
-18:10:29.6 |
HIP 98339 |
6.47 |
| 2026-09-23 12:00 |
19:58:20.72 |
-18:10:41.5 |
HIP 98339 |
7.05 |
| 2026-09-24 00:00 |
19:58:18.14 |
-18:10:53.2 |
HIP 98339 |
7.61 |
| 2026-09-24 12:00 |
19:58:15.66 |
-18:11:04.6 |
HIP 98339 |
8.17 |
| 2026-09-25 00:00 |
19:58:13.28 |
-18:11:15.8 |
HIP 98339 |
8.71 |
| 2026-09-25 12:00 |
19:58:10.99 |
-18:11:26.7 |
HIP 98339 |
9.23 |
| 2026-09-26 00:00 |
19:58:08.80 |
-18:11:37.3 |
HIP 98339 |
9.74 |
| 2026-09-26 12:00 |
19:58:06.72 |
-18:11:47.7 |
HIP 98339 |
10.22 |
| 2026-09-27 00:00 |
19:58:04.73 |
-18:11:57.8 |
HIP 98339 |
10.69 |
| 2026-09-27 12:00 |
19:58:02.84 |
-18:12:07.6 |
HIP 98339 |
11.14 |
| 2026-09-28 00:00 |
19:58:01.05 |
-18:12:17.2 |
HIP 98339 |
11.56 |
| 2026-09-28 12:00 |
19:57:59.36 |
-18:12:26.5 |
HIP 98339 |
11.96 |
| 2026-09-29 00:00 |
19:57:57.78 |
-18:12:35.6 |
HIP 98339 |
12.35 |
| 2026-09-29 12:00 |
19:57:56.29 |
-18:12:44.4 |
HIP 98339 |
12.70 |
| 2026-09-30 00:00 |
19:57:54.90 |
-18:12:52.9 |
HIP 98339 |
13.04 |
| 2026-09-30 12:00 |
19:57:53.61 |
-18:13:01.1 |
HIP 98339 |
13.35 |
| 2026-10-01 00:00 |
19:57:52.42 |
-18:13:09.1 |
HIP 98339 |
13.64 |
| 2026-10-01 12:00 |
19:57:51.34 |
-18:13:16.8 |
HIP 98339 |
13.91 |
| 2026-10-02 00:00 |
19:57:50.35 |
-18:13:24.3 |
HIP 98339 |
14.15 |
| 2026-10-02 12:00 |
19:57:49.47 |
-18:13:31.4 |
HIP 98339 |
14.37 |
| 2026-10-03 00:00 |
19:57:48.68 |
-18:13:38.3 |
HIP 98339 |
14.57 |
| 2026-10-03 12:00 |
19:57:48.00 |
-18:13:44.9 |
HIP 98339 |
14.74 |
| 2026-10-04 00:00 |
19:57:47.42 |
-18:13:51.3 |
HIP 98339 |
14.89 |
| 2026-10-04 12:00 |
19:57:46.94 |
-18:13:57.3 |
HIP 98339 |
15.02 |
| 2026-10-05 00:00 |
19:57:46.56 |
-18:14:03.1 |
HIP 98339 |
15.12 |
| 2026-10-05 12:00 |
19:57:46.29 |
-18:14:08.6 |
HIP 98339 |
15.19 |
| 2026-10-06 00:00 |
19:57:46.12 |
-18:14:13.9 |
HIP 98339 |
15.25 |
| 2026-10-06 12:00 |
19:57:46.04 |
-18:14:18.8 |
HIP 98339 |
15.27 |
| 2026-10-07 00:00 |
19:57:46.08 |
-18:14:23.5 |
HIP 98339 |
15.28 |
| 2026-10-07 12:00 |
19:57:46.21 |
-18:14:27.9 |
HIP 98339 |
15.26 |
| 2026-10-08 00:00 |
19:57:46.44 |
-18:14:32.0 |
HIP 98339 |
15.21 |
| 2026-10-08 12:00 |
19:57:46.78 |
-18:14:35.8 |
HIP 98339 |
15.14 |
| 2026-10-09 00:00 |
19:57:47.22 |
-18:14:39.3 |
HIP 98339 |
15.05 |
| 2026-10-09 12:00 |
19:57:47.77 |
-18:14:42.6 |
HIP 98339 |
14.93 |
| 2026-10-10 00:00 |
19:57:48.41 |
-18:14:45.6 |
HIP 98339 |
14.79 |
| 2026-10-10 12:00 |
19:57:49.16 |
-18:14:48.2 |
HIP 98339 |
14.62 |
| 2026-10-11 00:00 |
19:57:50.01 |
-18:14:50.6 |
HIP 98339 |
14.43 |