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) |
| 2026-07-29 00:00 |
20:11:36.79 |
-17:27:37.2 |
HIP 99468 |
22.24 |
| 2026-07-29 12:00 |
20:11:27.06 |
-17:28:06.0 |
HIP 99468 |
21.38 |
| 2026-07-30 00:00 |
20:11:17.33 |
-17:28:34.9 |
HIP 99468 |
20.75 |
| 2026-07-30 12:00 |
20:11:07.62 |
-17:29:03.7 |
HIP 99468 |
20.39 |
| 2026-07-31 00:00 |
20:10:57.92 |
-17:29:32.6 |
HIP 99468 |
20.29 |
| 2026-07-31 12:00 |
20:10:48.23 |
-17:30:01.4 |
HIP 99468 |
20.46 |
| 2026-08-01 00:00 |
20:10:38.56 |
-17:30:30.2 |
HIP 99468 |
20.90 |
| 2026-08-01 12:00 |
20:10:28.91 |
-17:30:59.1 |
HIP 99468 |
21.58 |
| 2026-08-02 00:00 |
20:10:19.27 |
-17:31:27.9 |
HIP 99468 |
22.49 |
| 2026-08-02 12:00 |
20:10:09.65 |
-17:31:56.6 |
HIP 99468 |
23.60 |
| 2026-08-03 00:00 |
20:10:00.05 |
-17:32:25.4 |
HIP 99468 |
24.87 |
| 2026-08-03 12:00 |
20:09:50.48 |
-17:32:54.1 |
HIP 99468 |
26.29 |
| 2026-08-04 00:00 |
20:09:40.92 |
-17:33:22.8 |
HIP 99349 |
27.10 |
| 2026-08-04 12:00 |
20:09:31.38 |
-17:33:51.5 |
HIP 99349 |
27.90 |
| 2026-08-05 00:00 |
20:09:21.87 |
-17:34:20.2 |
HIP 99247 |
28.50 |
| 2026-08-05 12:00 |
20:09:12.39 |
-17:34:48.8 |
HIP 99247 |
27.48 |
| 2026-08-06 00:00 |
20:09:02.93 |
-17:35:17.3 |
HIP 99247 |
26.62 |
| 2026-08-06 12:00 |
20:08:53.50 |
-17:35:45.8 |
HIP 99247 |
25.94 |
| 2026-08-07 00:00 |
20:08:44.09 |
-17:36:14.3 |
HIP 99247 |
25.44 |
| 2026-08-07 12:00 |
20:08:34.72 |
-17:36:42.7 |
HIP 99247 |
25.15 |
| 2026-08-08 00:00 |
20:08:25.37 |
-17:37:11.1 |
HIP 99247 |
25.07 |
| 2026-08-08 12:00 |
20:08:16.06 |
-17:37:39.4 |
HIP 99247 |
25.18 |
| 2026-08-09 00:00 |
20:08:06.78 |
-17:38:07.6 |
HIP 99247 |
25.50 |
| 2026-08-09 12:00 |
20:07:57.53 |
-17:38:35.8 |
HIP 99247 |
26.01 |
| 2026-08-10 00:00 |
20:07:48.32 |
-17:39:03.9 |
HIP 99247 |
26.69 |
| 2026-08-10 12:00 |
20:07:39.14 |
-17:39:32.0 |
HIP 99247 |
27.54 |
| 2026-08-11 00:00 |
20:07:30.01 |
-17:40:00.0 |
HIP 98970 |
27.01 |
| 2026-08-11 12:00 |
20:07:20.91 |
-17:40:27.8 |
HIP 98970 |
24.82 |
| 2026-08-12 00:00 |
20:07:11.85 |
-17:40:55.6 |
HIP 98970 |
22.64 |
| 2026-08-12 12:00 |
20:07:02.83 |
-17:41:23.3 |
HIP 98970 |
20.47 |
| 2026-08-13 00:00 |
20:06:53.85 |
-17:41:51.0 |
HIP 98970 |
18.33 |
| 2026-08-13 12:00 |
20:06:44.91 |
-17:42:18.5 |
HIP 98970 |
16.20 |
| 2026-08-14 00:00 |
20:06:36.02 |
-17:42:46.0 |
HIP 98970 |
14.10 |
| 2026-08-14 12:00 |
20:06:27.18 |
-17:43:13.3 |
HIP 98970 |
12.03 |
| 2026-08-15 00:00 |
20:06:18.38 |
-17:43:40.5 |
HIP 98970 |
10.01 |
| 2026-08-15 12:00 |
20:06:09.63 |
-17:44:07.7 |
HIP 98970 |
8.07 |
| 2026-08-16 00:00 |
20:06:00.92 |
-17:44:34.7 |
HIP 98970 |
6.27 |
| 2026-08-16 12:00 |
20:05:52.27 |
-17:45:01.6 |
HIP 98970 |
4.74 |
| 2026-08-17 00:00 |
20:05:43.66 |
-17:45:28.4 |
HIP 98970 |
3.81 |
| 2026-08-17 12:00 |
20:05:35.11 |
-17:45:55.1 |
HIP 98970 |
3.92 |
| 2026-08-18 00:00 |
20:05:26.61 |
-17:46:21.7 |
HIP 98970 |
4.99 |
| 2026-08-18 12:00 |
20:05:18.16 |
-17:46:48.1 |
HIP 98970 |
6.54 |
| 2026-08-19 00:00 |
20:05:09.77 |
-17:47:14.4 |
HIP 98970 |
8.31 |