メタデータ
| 項目 |
値 |
| Designation |
C/2013 F1 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-12-02T15:47:47.538240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:32Z |
| Obs used |
274 |
| NEO |
- |
| M1 |
15.100 |
| 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) |
2013-04-14.0000000 |
| e |
1.00279701 |
| q (au) |
1.859992 |
| a (au) |
-664.991992 |
| i (deg) |
79.687882 |
| Ω (om, deg) |
30.122757 |
| ω (w, deg) |
92.003330 |
| M (ma, deg) |
0.007606 |
等級
散乱 + 全体線形
$$
M_a = (14.724 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.724 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.996 |
| 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) |
| 2026-05-12 00:00 |
11:31:13.58 |
-72:37:42.8 |
HIP 55979 |
16.07 |
| 2026-05-12 12:00 |
11:31:06.75 |
-72:36:53.7 |
HIP 55979 |
15.19 |
| 2026-05-13 00:00 |
11:31:00.02 |
-72:36:04.5 |
HIP 55979 |
14.32 |
| 2026-05-13 12:00 |
11:30:53.39 |
-72:35:15.0 |
HIP 55979 |
13.47 |
| 2026-05-14 00:00 |
11:30:46.86 |
-72:34:25.3 |
HIP 55979 |
12.65 |
| 2026-05-14 12:00 |
11:30:40.43 |
-72:33:35.4 |
HIP 55979 |
11.84 |
| 2026-05-15 00:00 |
11:30:34.10 |
-72:32:45.3 |
HIP 55979 |
11.07 |
| 2026-05-15 12:00 |
11:30:27.88 |
-72:31:55.0 |
HIP 55979 |
10.33 |
| 2026-05-16 00:00 |
11:30:21.76 |
-72:31:04.5 |
HIP 55979 |
9.64 |
| 2026-05-16 12:00 |
11:30:15.74 |
-72:30:13.9 |
HIP 55979 |
9.00 |
| 2026-05-17 00:00 |
11:30:09.82 |
-72:29:23.0 |
HIP 55979 |
8.43 |
| 2026-05-17 12:00 |
11:30:04.00 |
-72:28:32.0 |
HIP 55979 |
7.95 |
| 2026-05-18 00:00 |
11:29:58.29 |
-72:27:40.9 |
HIP 55979 |
7.56 |
| 2026-05-18 12:00 |
11:29:52.68 |
-72:26:49.5 |
HIP 55979 |
7.28 |
| 2026-05-19 00:00 |
11:29:47.17 |
-72:25:58.0 |
HIP 55979 |
7.13 |
| 2026-05-19 12:00 |
11:29:41.77 |
-72:25:06.4 |
HIP 55979 |
7.11 |
| 2026-05-20 00:00 |
11:29:36.47 |
-72:24:14.6 |
HIP 55979 |
7.23 |
| 2026-05-20 12:00 |
11:29:31.28 |
-72:23:22.6 |
HIP 55979 |
7.47 |
| 2026-05-21 00:00 |
11:29:26.18 |
-72:22:30.5 |
HIP 55979 |
7.83 |
| 2026-05-21 12:00 |
11:29:21.19 |
-72:21:38.3 |
HIP 55979 |
8.29 |
| 2026-05-22 00:00 |
11:29:16.31 |
-72:20:46.0 |
HIP 55979 |
8.83 |
| 2026-05-22 12:00 |
11:29:11.53 |
-72:19:53.5 |
HIP 55979 |
9.44 |
| 2026-05-23 00:00 |
11:29:06.85 |
-72:19:00.9 |
HIP 55979 |
10.11 |
| 2026-05-23 12:00 |
11:29:02.27 |
-72:18:08.2 |
HIP 55979 |
10.82 |
| 2026-05-24 00:00 |
11:28:57.80 |
-72:17:15.4 |
HIP 55979 |
11.57 |
| 2026-05-24 12:00 |
11:28:53.43 |
-72:16:22.5 |
HIP 55979 |
12.35 |
| 2026-05-25 00:00 |
11:28:49.17 |
-72:15:29.5 |
HIP 55933 |
12.25 |
| 2026-05-25 12:00 |
11:28:45.01 |
-72:14:36.4 |
HIP 55933 |
11.31 |
| 2026-05-26 00:00 |
11:28:40.95 |
-72:13:43.2 |
HIP 55933 |
10.37 |
| 2026-05-26 12:00 |
11:28:36.99 |
-72:12:49.9 |
HIP 55933 |
9.44 |
| 2026-05-27 00:00 |
11:28:33.14 |
-72:11:56.6 |
HIP 55933 |
8.51 |
| 2026-05-27 12:00 |
11:28:29.39 |
-72:11:03.1 |
HIP 55933 |
7.58 |
| 2026-05-28 00:00 |
11:28:25.75 |
-72:10:09.6 |
HIP 55933 |
6.66 |
| 2026-05-28 12:00 |
11:28:22.20 |
-72:09:16.0 |
HIP 55933 |
5.74 |
| 2026-05-29 00:00 |
11:28:18.76 |
-72:08:22.4 |
HIP 55933 |
4.83 |
| 2026-05-29 12:00 |
11:28:15.42 |
-72:07:28.7 |
HIP 55933 |
3.94 |
| 2026-05-30 00:00 |
11:28:12.19 |
-72:06:34.9 |
HIP 55933 |
3.07 |
| 2026-05-30 12:00 |
11:28:09.06 |
-72:05:41.1 |
HIP 55933 |
2.26 |
| 2026-05-31 00:00 |
11:28:06.02 |
-72:04:47.2 |
HIP 55933 |
1.59 |
| 2026-05-31 12:00 |
11:28:03.10 |
-72:03:53.3 |
HIP 55933 |
1.29 |
| 2026-06-01 00:00 |
11:28:00.27 |
-72:02:59.4 |
HIP 55933 |
1.60 |
| 2026-06-01 12:00 |
11:27:57.54 |
-72:02:05.4 |
HIP 55933 |
2.28 |
| 2026-06-02 00:00 |
11:27:54.92 |
-72:01:11.4 |
HIP 55933 |
3.09 |