メタデータ
| 項目 |
値 |
| Designation |
C/2010 F1 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2009-11-10T13:33:39.127680Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
301 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
15.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-04-02.0000000 |
| e |
0.94753492 |
| q (au) |
3.587530 |
| a (au) |
68.379381 |
| i (deg) |
64.935721 |
| Ω (om, deg) |
344.389791 |
| ω (w, deg) |
127.512149 |
| M (ma, deg) |
0.248275 |
等級
散乱 + 全体線形
$$
M_a = (13.031 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.031 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.999 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2010-02-20 |
2012-07-27 |
-25.1690 |
+14.600 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
13:49:53.71 |
-87:13:56.5 |
HIP 68569 |
24.44 |
| 2026-03-26 12:00 |
13:48:50.62 |
-87:14:19.0 |
HIP 68569 |
24.34 |
| 2026-03-27 00:00 |
13:47:46.99 |
-87:14:40.9 |
HIP 68569 |
24.27 |
| 2026-03-27 12:00 |
13:46:42.82 |
-87:15:02.0 |
HIP 68569 |
24.25 |
| 2026-03-28 00:00 |
13:45:38.14 |
-87:15:22.5 |
HIP 68569 |
24.26 |
| 2026-03-28 12:00 |
13:44:32.95 |
-87:15:42.3 |
HIP 68569 |
24.30 |
| 2026-03-29 00:00 |
13:43:27.27 |
-87:16:01.4 |
HIP 68569 |
24.39 |
| 2026-03-29 12:00 |
13:42:21.12 |
-87:16:19.9 |
HIP 68569 |
24.51 |
| 2026-03-30 00:00 |
13:41:14.51 |
-87:16:37.6 |
HIP 64109 |
23.92 |
| 2026-03-30 12:00 |
13:40:07.45 |
-87:16:54.6 |
HIP 64109 |
23.15 |
| 2026-03-31 00:00 |
13:38:59.96 |
-87:17:11.0 |
HIP 64109 |
22.38 |
| 2026-03-31 12:00 |
13:37:52.06 |
-87:17:26.6 |
HIP 64109 |
21.62 |
| 2026-04-01 00:00 |
13:36:43.76 |
-87:17:41.5 |
HIP 64109 |
20.86 |
| 2026-04-01 12:00 |
13:35:35.08 |
-87:17:55.7 |
HIP 64109 |
20.10 |
| 2026-04-02 00:00 |
13:34:26.04 |
-87:18:09.2 |
HIP 64109 |
19.34 |
| 2026-04-02 12:00 |
13:33:16.65 |
-87:18:22.0 |
HIP 64109 |
18.59 |
| 2026-04-03 00:00 |
13:32:06.93 |
-87:18:34.0 |
HIP 64109 |
17.84 |
| 2026-04-03 12:00 |
13:30:56.90 |
-87:18:45.4 |
HIP 64109 |
17.10 |
| 2026-04-04 00:00 |
13:29:46.58 |
-87:18:55.9 |
HIP 64109 |
16.37 |
| 2026-04-04 12:00 |
13:28:35.98 |
-87:19:05.8 |
HIP 64109 |
15.64 |
| 2026-04-05 00:00 |
13:27:25.13 |
-87:19:14.9 |
HIP 64109 |
14.92 |
| 2026-04-05 12:00 |
13:26:14.04 |
-87:19:23.3 |
HIP 64109 |
14.20 |
| 2026-04-06 00:00 |
13:25:02.73 |
-87:19:31.0 |
HIP 64109 |
13.50 |
| 2026-04-06 12:00 |
13:23:51.23 |
-87:19:37.9 |
HIP 64109 |
12.81 |
| 2026-04-07 00:00 |
13:22:39.55 |
-87:19:44.0 |
HIP 64109 |
12.14 |
| 2026-04-07 12:00 |
13:21:27.70 |
-87:19:49.5 |
HIP 64109 |
11.48 |
| 2026-04-08 00:00 |
13:20:15.72 |
-87:19:54.1 |
HIP 64109 |
10.84 |
| 2026-04-08 12:00 |
13:19:03.62 |
-87:19:58.1 |
HIP 64109 |
10.22 |
| 2026-04-09 00:00 |
13:17:51.42 |
-87:20:01.2 |
HIP 64109 |
9.64 |
| 2026-04-09 12:00 |
13:16:39.15 |
-87:20:03.7 |
HIP 64109 |
9.08 |
| 2026-04-10 00:00 |
13:15:26.81 |
-87:20:05.3 |
HIP 64109 |
8.57 |
| 2026-04-10 12:00 |
13:14:14.44 |
-87:20:06.3 |
HIP 64109 |
8.11 |
| 2026-04-11 00:00 |
13:13:02.05 |
-87:20:06.5 |
HIP 64109 |
7.70 |
| 2026-04-11 12:00 |
13:11:49.67 |
-87:20:05.9 |
HIP 64109 |
7.36 |
| 2026-04-12 00:00 |
13:10:37.31 |
-87:20:04.6 |
HIP 64109 |
7.09 |
| 2026-04-12 12:00 |
13:09:25.00 |
-87:20:02.5 |
HIP 64109 |
6.91 |
| 2026-04-13 00:00 |
13:08:12.75 |
-87:19:59.7 |
HIP 64109 |
6.82 |
| 2026-04-13 12:00 |
13:07:00.59 |
-87:19:56.1 |
HIP 64109 |
6.83 |
| 2026-04-14 00:00 |
13:05:48.54 |
-87:19:51.8 |
HIP 64109 |
6.93 |
| 2026-04-14 12:00 |
13:04:36.61 |
-87:19:46.8 |
HIP 64109 |
7.12 |
| 2026-04-15 00:00 |
13:03:24.84 |
-87:19:41.0 |
HIP 64109 |
7.40 |
| 2026-04-15 12:00 |
13:02:13.23 |
-87:19:34.4 |
HIP 64109 |
7.75 |
| 2026-04-16 00:00 |
13:01:01.81 |
-87:19:27.2 |
HIP 64109 |
8.17 |