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 |
-1.000 |
| 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) |
| 2026-03-26 00:00 |
16:20:17.46 |
-18:45:15.7 |
HIP 80061 |
4.77 |
| 2026-03-26 12:00 |
16:20:15.65 |
-18:45:08.2 |
HIP 80061 |
4.94 |
| 2026-03-27 00:00 |
16:20:13.63 |
-18:45:00.2 |
HIP 80061 |
5.18 |
| 2026-03-27 12:00 |
16:20:11.40 |
-18:44:51.9 |
HIP 80061 |
5.48 |
| 2026-03-28 00:00 |
16:20:08.98 |
-18:44:43.1 |
HIP 80061 |
5.86 |
| 2026-03-28 12:00 |
16:20:06.35 |
-18:44:33.8 |
HIP 80061 |
6.30 |
| 2026-03-29 00:00 |
16:20:03.52 |
-18:44:24.2 |
HIP 80061 |
6.82 |
| 2026-03-29 12:00 |
16:20:00.49 |
-18:44:14.2 |
HIP 80061 |
7.40 |
| 2026-03-30 00:00 |
16:19:57.26 |
-18:44:03.7 |
HIP 79984 |
7.68 |
| 2026-03-30 12:00 |
16:19:53.83 |
-18:43:52.8 |
HIP 79984 |
7.30 |
| 2026-03-31 00:00 |
16:19:50.20 |
-18:43:41.6 |
HIP 79984 |
6.97 |
| 2026-03-31 12:00 |
16:19:46.37 |
-18:43:29.9 |
HIP 79984 |
6.73 |
| 2026-04-01 00:00 |
16:19:42.34 |
-18:43:17.8 |
HIP 79984 |
6.61 |
| 2026-04-01 12:00 |
16:19:38.11 |
-18:43:05.2 |
HIP 79984 |
6.63 |
| 2026-04-02 00:00 |
16:19:33.68 |
-18:42:52.3 |
HIP 79984 |
6.82 |
| 2026-04-02 12:00 |
16:19:29.06 |
-18:42:39.0 |
HIP 79984 |
7.18 |
| 2026-04-03 00:00 |
16:19:24.23 |
-18:42:25.3 |
HIP 79984 |
7.71 |
| 2026-04-03 12:00 |
16:19:19.21 |
-18:42:11.1 |
HIP 79984 |
8.39 |
| 2026-04-04 00:00 |
16:19:14.00 |
-18:41:56.6 |
HIP 79984 |
9.21 |
| 2026-04-04 12:00 |
16:19:08.58 |
-18:41:41.7 |
HIP 79984 |
10.16 |
| 2026-04-05 00:00 |
16:19:02.98 |
-18:41:26.4 |
HIP 79984 |
11.22 |
| 2026-04-05 12:00 |
16:18:57.18 |
-18:41:10.6 |
HIP 79984 |
12.37 |
| 2026-04-06 00:00 |
16:18:51.18 |
-18:40:54.5 |
HIP 79984 |
13.61 |
| 2026-04-06 12:00 |
16:18:44.99 |
-18:40:38.0 |
HIP 79984 |
14.93 |
| 2026-04-07 00:00 |
16:18:38.61 |
-18:40:21.1 |
HIP 79984 |
16.31 |
| 2026-04-07 12:00 |
16:18:32.03 |
-18:40:03.8 |
HIP 79984 |
17.77 |
| 2026-04-08 00:00 |
16:18:25.27 |
-18:39:46.2 |
HIP 79984 |
19.28 |
| 2026-04-08 12:00 |
16:18:18.31 |
-18:39:28.1 |
HIP 79984 |
20.86 |
| 2026-04-09 00:00 |
16:18:11.17 |
-18:39:09.7 |
HIP 79750 |
22.08 |
| 2026-04-09 12:00 |
16:18:03.83 |
-18:38:50.8 |
HIP 79750 |
20.32 |
| 2026-04-10 00:00 |
16:17:56.31 |
-18:38:31.6 |
HIP 79750 |
18.52 |
| 2026-04-10 12:00 |
16:17:48.60 |
-18:38:12.1 |
HIP 79750 |
16.67 |
| 2026-04-11 00:00 |
16:17:40.71 |
-18:37:52.1 |
HIP 79750 |
14.78 |
| 2026-04-11 12:00 |
16:17:32.63 |
-18:37:31.8 |
HIP 79750 |
12.85 |
| 2026-04-12 00:00 |
16:17:24.37 |
-18:37:11.1 |
HIP 79750 |
10.87 |
| 2026-04-12 12:00 |
16:17:15.92 |
-18:36:50.1 |
HIP 79750 |
8.87 |
| 2026-04-13 00:00 |
16:17:07.30 |
-18:36:28.7 |
HIP 79750 |
6.83 |
| 2026-04-13 12:00 |
16:16:58.49 |
-18:36:06.9 |
HIP 79750 |
4.78 |
| 2026-04-14 00:00 |
16:16:49.50 |
-18:35:44.8 |
HIP 79750 |
2.79 |
| 2026-04-14 12:00 |
16:16:40.33 |
-18:35:22.3 |
HIP 79750 |
1.44 |
| 2026-04-15 00:00 |
16:16:30.99 |
-18:34:59.5 |
HIP 79750 |
2.50 |
| 2026-04-15 12:00 |
16:16:21.48 |
-18:34:36.3 |
HIP 79732 |
1.34 |
| 2026-04-16 00:00 |
16:16:11.78 |
-18:34:12.8 |
HIP 79732 |
2.66 |