メタデータ
| 項目 |
値 |
| Designation |
281P/MOSS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-05-12T10:50:03.560640Z |
| Orbit solution date (soln_date, UTC) |
2023-02-22T00:13:23Z |
| Obs used |
101 |
| NEO |
- |
| M1 |
14.800 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-08-05.0000000 |
| e |
0.17340861 |
| q (au) |
4.014306 |
| a (au) |
4.856457 |
| i (deg) |
4.723193 |
| Ω (om, deg) |
87.169629 |
| ω (w, deg) |
26.424564 |
| M (ma, deg) |
334.080407 |
等級
散乱 + 全体線形
$$
M_a = (8.442 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.442 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
15:37:01.41 |
-17:30:11.9 |
HIP 76572 |
18.22 |
| 2026-07-29 12:00 |
15:37:02.85 |
-17:30:38.5 |
HIP 76572 |
17.80 |
| 2026-07-30 00:00 |
15:37:04.48 |
-17:31:05.7 |
HIP 76572 |
17.34 |
| 2026-07-30 12:00 |
15:37:06.29 |
-17:31:33.4 |
HIP 76572 |
16.85 |
| 2026-07-31 00:00 |
15:37:08.29 |
-17:32:01.8 |
HIP 76572 |
16.33 |
| 2026-07-31 12:00 |
15:37:10.46 |
-17:32:30.7 |
HIP 76572 |
15.77 |
| 2026-08-01 00:00 |
15:37:12.82 |
-17:33:00.2 |
HIP 76572 |
15.18 |
| 2026-08-01 12:00 |
15:37:15.37 |
-17:33:30.3 |
HIP 76572 |
14.57 |
| 2026-08-02 00:00 |
15:37:18.09 |
-17:34:01.0 |
HIP 76572 |
13.92 |
| 2026-08-02 12:00 |
15:37:21.00 |
-17:34:32.3 |
HIP 76572 |
13.26 |
| 2026-08-03 00:00 |
15:37:24.09 |
-17:35:04.1 |
HIP 76572 |
12.57 |
| 2026-08-03 12:00 |
15:37:27.36 |
-17:35:36.5 |
HIP 76572 |
11.88 |
| 2026-08-04 00:00 |
15:37:30.81 |
-17:36:09.5 |
HIP 76572 |
11.18 |
| 2026-08-04 12:00 |
15:37:34.44 |
-17:36:43.0 |
HIP 76572 |
10.49 |
| 2026-08-05 00:00 |
15:37:38.25 |
-17:37:17.2 |
HIP 76572 |
9.83 |
| 2026-08-05 12:00 |
15:37:42.24 |
-17:37:51.8 |
HIP 76572 |
9.20 |
| 2026-08-06 00:00 |
15:37:46.42 |
-17:38:27.1 |
HIP 76572 |
8.65 |
| 2026-08-06 12:00 |
15:37:50.77 |
-17:39:02.8 |
HIP 76572 |
8.20 |
| 2026-08-07 00:00 |
15:37:55.30 |
-17:39:39.2 |
HIP 76572 |
7.88 |
| 2026-08-07 12:00 |
15:38:00.01 |
-17:40:16.1 |
HIP 76572 |
7.74 |
| 2026-08-08 00:00 |
15:38:04.89 |
-17:40:53.5 |
HIP 76572 |
7.79 |
| 2026-08-08 12:00 |
15:38:09.96 |
-17:41:31.5 |
HIP 76605 |
7.67 |
| 2026-08-09 00:00 |
15:38:15.20 |
-17:42:10.1 |
HIP 76605 |
6.65 |
| 2026-08-09 12:00 |
15:38:20.62 |
-17:42:49.1 |
HIP 76605 |
5.76 |
| 2026-08-10 00:00 |
15:38:26.22 |
-17:43:28.8 |
HIP 76605 |
5.10 |
| 2026-08-10 12:00 |
15:38:32.00 |
-17:44:08.9 |
HIP 76605 |
4.82 |
| 2026-08-11 00:00 |
15:38:37.95 |
-17:44:49.6 |
HIP 76605 |
5.01 |
| 2026-08-11 12:00 |
15:38:44.07 |
-17:45:30.8 |
HIP 76605 |
5.66 |
| 2026-08-12 00:00 |
15:38:50.37 |
-17:46:12.5 |
HIP 76605 |
6.67 |
| 2026-08-12 12:00 |
15:38:56.85 |
-17:46:54.8 |
HIP 76605 |
7.93 |
| 2026-08-13 00:00 |
15:39:03.50 |
-17:47:37.6 |
HIP 76605 |
9.36 |
| 2026-08-13 12:00 |
15:39:10.33 |
-17:48:20.9 |
HIP 76605 |
10.91 |
| 2026-08-14 00:00 |
15:39:17.32 |
-17:49:04.7 |
HIP 76605 |
12.55 |
| 2026-08-14 12:00 |
15:39:24.49 |
-17:49:49.0 |
HIP 76605 |
14.28 |
| 2026-08-15 00:00 |
15:39:31.84 |
-17:50:33.8 |
HIP 76605 |
16.07 |
| 2026-08-15 12:00 |
15:39:39.35 |
-17:51:19.1 |
HIP 76779 |
17.53 |
| 2026-08-16 00:00 |
15:39:47.04 |
-17:52:04.9 |
HIP 76779 |
15.67 |
| 2026-08-16 12:00 |
15:39:54.89 |
-17:52:51.1 |
HIP 76779 |
13.81 |
| 2026-08-17 00:00 |
15:40:02.91 |
-17:53:37.9 |
HIP 76779 |
11.97 |
| 2026-08-17 12:00 |
15:40:11.10 |
-17:54:25.1 |
HIP 76779 |
10.19 |
| 2026-08-18 00:00 |
15:40:19.46 |
-17:55:12.8 |
HIP 76779 |
8.52 |
| 2026-08-18 12:00 |
15:40:27.99 |
-17:56:01.0 |
HIP 76779 |
7.11 |
| 2026-08-19 00:00 |
15:40:36.68 |
-17:56:49.7 |
HIP 76779 |
6.15 |