C/2011 Y3 (Boattini)
メタデータ
| 項目 |
値 |
| Designation |
C/2011 Y3 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-08-22T22:31:41.001600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:59Z |
| Obs used |
54 |
| NEO |
- |
| M1 |
11.700 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-01-01.0000000 |
| e |
0.70491483 |
| q (au) |
3.497843 |
| a (au) |
11.853673 |
| i (deg) |
26.516854 |
| Ω (om, deg) |
84.802605 |
| ω (w, deg) |
340.679907 |
| M (ma, deg) |
3.165186 |
等級
散乱 + 全体線形
$$
M_a = (14.131 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.131 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.952 |
| 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) |
| 2026-02-03 00:00 |
15:55:55.99 |
-06:23:21.4 |
HIP 78049 |
17.29 |
| 2026-02-03 12:00 |
15:55:58.50 |
-06:23:12.3 |
HIP 78049 |
17.35 |
| 2026-02-04 00:00 |
15:56:00.95 |
-06:23:02.9 |
HIP 78049 |
17.44 |
| 2026-02-04 12:00 |
15:56:03.35 |
-06:22:53.3 |
HIP 78124 |
17.00 |
| 2026-02-05 00:00 |
15:56:05.71 |
-06:22:43.5 |
HIP 78124 |
16.39 |
| 2026-02-05 12:00 |
15:56:08.01 |
-06:22:33.5 |
HIP 78124 |
15.79 |
| 2026-02-06 00:00 |
15:56:10.27 |
-06:22:23.2 |
HIP 78124 |
15.21 |
| 2026-02-06 12:00 |
15:56:12.47 |
-06:22:12.8 |
HIP 78124 |
14.63 |
| 2026-02-07 00:00 |
15:56:14.62 |
-06:22:02.1 |
HIP 78124 |
14.07 |
| 2026-02-07 12:00 |
15:56:16.73 |
-06:21:51.2 |
HIP 78124 |
13.52 |
| 2026-02-08 00:00 |
15:56:18.78 |
-06:21:40.1 |
HIP 78124 |
12.98 |
| 2026-02-08 12:00 |
15:56:20.78 |
-06:21:28.8 |
HIP 78124 |
12.45 |
| 2026-02-09 00:00 |
15:56:22.72 |
-06:21:17.2 |
HIP 78124 |
11.93 |
| 2026-02-09 12:00 |
15:56:24.62 |
-06:21:05.5 |
HIP 78124 |
11.42 |
| 2026-02-10 00:00 |
15:56:26.47 |
-06:20:53.5 |
HIP 78124 |
10.92 |
| 2026-02-10 12:00 |
15:56:28.26 |
-06:20:41.4 |
HIP 78124 |
10.44 |
| 2026-02-11 00:00 |
15:56:30.00 |
-06:20:29.0 |
HIP 78124 |
9.97 |
| 2026-02-11 12:00 |
15:56:31.69 |
-06:20:16.4 |
HIP 78124 |
9.51 |
| 2026-02-12 00:00 |
15:56:33.32 |
-06:20:03.7 |
HIP 78124 |
9.06 |
| 2026-02-12 12:00 |
15:56:34.91 |
-06:19:50.7 |
HIP 78124 |
8.62 |
| 2026-02-13 00:00 |
15:56:36.44 |
-06:19:37.5 |
HIP 78124 |
8.20 |
| 2026-02-13 12:00 |
15:56:37.92 |
-06:19:24.1 |
HIP 78124 |
7.80 |
| 2026-02-14 00:00 |
15:56:39.34 |
-06:19:10.5 |
HIP 78124 |
7.41 |
| 2026-02-14 12:00 |
15:56:40.72 |
-06:18:56.7 |
HIP 78124 |
7.03 |
| 2026-02-15 00:00 |
15:56:42.04 |
-06:18:42.8 |
HIP 78124 |
6.67 |
| 2026-02-15 12:00 |
15:56:43.30 |
-06:18:28.6 |
HIP 78124 |
6.33 |
| 2026-02-16 00:00 |
15:56:44.51 |
-06:18:14.2 |
HIP 78124 |
6.01 |
| 2026-02-16 12:00 |
15:56:45.67 |
-06:17:59.6 |
HIP 78124 |
5.71 |
| 2026-02-17 00:00 |
15:56:46.78 |
-06:17:44.9 |
HIP 78124 |
5.43 |
| 2026-02-17 12:00 |
15:56:47.83 |
-06:17:29.9 |
HIP 78124 |
5.18 |
| 2026-02-18 00:00 |
15:56:48.83 |
-06:17:14.8 |
HIP 78124 |
4.95 |
| 2026-02-18 12:00 |
15:56:49.77 |
-06:16:59.5 |
HIP 78124 |
4.75 |
| 2026-02-19 00:00 |
15:56:50.66 |
-06:16:44.0 |
HIP 78124 |
4.59 |
| 2026-02-19 12:00 |
15:56:51.49 |
-06:16:28.3 |
HIP 78124 |
4.46 |
| 2026-02-20 00:00 |
15:56:52.28 |
-06:16:12.5 |
HIP 78124 |
4.36 |
| 2026-02-20 12:00 |
15:56:53.00 |
-06:15:56.4 |
HIP 78124 |
4.30 |
| 2026-02-21 00:00 |
15:56:53.68 |
-06:15:40.2 |
HIP 78124 |
4.28 |
| 2026-02-21 12:00 |
15:56:54.29 |
-06:15:23.8 |
HIP 78124 |
4.29 |
| 2026-02-22 00:00 |
15:56:54.86 |
-06:15:07.2 |
HIP 78124 |
4.34 |
| 2026-02-22 12:00 |
15:56:55.37 |
-06:14:50.5 |
HIP 78124 |
4.43 |
| 2026-02-23 00:00 |
15:56:55.83 |
-06:14:33.6 |
HIP 78124 |
4.54 |
| 2026-02-23 12:00 |
15:56:56.23 |
-06:14:16.5 |
HIP 78124 |
4.68 |
| 2026-02-24 00:00 |
15:56:56.57 |
-06:13:59.3 |
HIP 78124 |
4.85 |