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) |
| 2026-06-01 00:00 |
15:53:38.98 |
-17:44:06.1 |
HIP 77808 |
14.92 |
| 2026-06-01 12:00 |
15:53:22.96 |
-17:43:33.1 |
HIP 77808 |
14.61 |
| 2026-06-02 00:00 |
15:53:07.00 |
-17:43:00.4 |
HIP 77808 |
15.28 |
| 2026-06-02 12:00 |
15:52:51.09 |
-17:42:27.9 |
HIP 77808 |
16.82 |
| 2026-06-03 00:00 |
15:52:35.25 |
-17:41:55.7 |
HIP 77808 |
19.00 |
| 2026-06-03 12:00 |
15:52:19.47 |
-17:41:23.7 |
HIP 77808 |
21.62 |
| 2026-06-04 00:00 |
15:52:03.76 |
-17:40:51.9 |
HIP 77588 |
23.82 |
| 2026-06-04 12:00 |
15:51:48.12 |
-17:40:20.4 |
HIP 77588 |
20.10 |
| 2026-06-05 00:00 |
15:51:32.55 |
-17:39:49.2 |
HIP 77588 |
16.40 |
| 2026-06-05 12:00 |
15:51:17.05 |
-17:39:18.2 |
HIP 77588 |
12.75 |
| 2026-06-06 00:00 |
15:51:01.63 |
-17:38:47.5 |
HIP 77588 |
9.19 |
| 2026-06-06 12:00 |
15:50:46.29 |
-17:38:17.1 |
HIP 77588 |
5.83 |
| 2026-06-07 00:00 |
15:50:31.03 |
-17:37:47.0 |
HIP 77588 |
3.29 |
| 2026-06-07 12:00 |
15:50:15.85 |
-17:37:17.2 |
HIP 77588 |
3.81 |
| 2026-06-08 00:00 |
15:50:00.76 |
-17:36:47.7 |
HIP 77588 |
6.68 |
| 2026-06-08 12:00 |
15:49:45.76 |
-17:36:18.5 |
HIP 77588 |
10.04 |
| 2026-06-09 00:00 |
15:49:30.84 |
-17:35:49.6 |
HIP 77588 |
13.50 |
| 2026-06-09 12:00 |
15:49:16.02 |
-17:35:21.1 |
HIP 77588 |
16.99 |
| 2026-06-10 00:00 |
15:49:01.30 |
-17:34:52.9 |
HIP 77400 |
17.86 |
| 2026-06-10 12:00 |
15:48:46.67 |
-17:34:25.1 |
HIP 77400 |
15.74 |
| 2026-06-11 00:00 |
15:48:32.15 |
-17:33:57.6 |
HIP 77400 |
14.19 |
| 2026-06-11 12:00 |
15:48:17.72 |
-17:33:30.5 |
HIP 77343 |
13.20 |
| 2026-06-12 00:00 |
15:48:03.41 |
-17:33:03.7 |
HIP 77343 |
9.82 |
| 2026-06-12 12:00 |
15:47:49.19 |
-17:32:37.4 |
HIP 77343 |
6.52 |
| 2026-06-13 00:00 |
15:47:35.09 |
-17:32:11.4 |
HIP 77343 |
3.47 |
| 2026-06-13 12:00 |
15:47:21.10 |
-17:31:45.8 |
HIP 77343 |
2.13 |
| 2026-06-14 00:00 |
15:47:07.22 |
-17:31:20.6 |
HIP 77343 |
4.40 |
| 2026-06-14 12:00 |
15:46:53.46 |
-17:30:55.8 |
HIP 77343 |
7.49 |
| 2026-06-15 00:00 |
15:46:39.82 |
-17:30:31.5 |
HIP 77343 |
10.68 |
| 2026-06-15 12:00 |
15:46:26.30 |
-17:30:07.5 |
HIP 77343 |
13.88 |
| 2026-06-16 00:00 |
15:46:12.90 |
-17:29:44.0 |
HIP 77343 |
17.07 |
| 2026-06-16 12:00 |
15:45:59.62 |
-17:29:20.9 |
HIP 77343 |
20.23 |
| 2026-06-17 00:00 |
15:45:46.48 |
-17:28:58.3 |
HIP 77343 |
23.38 |
| 2026-06-17 12:00 |
15:45:33.46 |
-17:28:36.1 |
HIP 77343 |
26.49 |
| 2026-06-18 00:00 |
15:45:20.57 |
-17:28:14.3 |
HIP 77343 |
29.57 |
| 2026-06-18 12:00 |
15:45:07.82 |
-17:27:53.1 |
HIP 77036 |
27.87 |
| 2026-06-19 00:00 |
15:44:55.20 |
-17:27:32.3 |
HIP 77036 |
26.18 |
| 2026-06-19 12:00 |
15:44:42.71 |
-17:27:11.9 |
HIP 77036 |
24.75 |
| 2026-06-20 00:00 |
15:44:30.37 |
-17:26:52.0 |
HIP 77036 |
23.62 |
| 2026-06-20 12:00 |
15:44:18.16 |
-17:26:32.7 |
HIP 77036 |
22.83 |
| 2026-06-21 00:00 |
15:44:06.10 |
-17:26:13.8 |
HIP 77036 |
22.39 |
| 2026-06-21 12:00 |
15:43:54.18 |
-17:25:55.4 |
HIP 77036 |
22.31 |
| 2026-06-22 00:00 |
15:43:42.40 |
-17:25:37.4 |
HIP 77036 |
22.59 |