メタデータ
| 項目 |
値 |
| Designation |
C/2010 G1 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-04-02T12:57:43.750080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
282 |
| NEO |
- |
| M1 |
14.100 |
| K1 |
4.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-04-11.0000000 |
| e |
0.99747618 |
| q (au) |
1.204547 |
| a (au) |
477.271106 |
| i (deg) |
78.387100 |
| Ω (om, deg) |
287.448396 |
| ω (w, deg) |
168.631492 |
| M (ma, deg) |
0.000800 |
等級
散乱 + 全体線形
$$
M_a = (15.461 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.461 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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 |
19:09:26.73 |
-55:04:59.9 |
HIP 94188 |
9.88 |
| 2026-05-12 12:00 |
19:09:23.33 |
-55:05:23.4 |
HIP 94188 |
10.21 |
| 2026-05-13 00:00 |
19:09:19.88 |
-55:05:46.9 |
HIP 94188 |
10.58 |
| 2026-05-13 12:00 |
19:09:16.39 |
-55:06:10.2 |
HIP 94188 |
10.98 |
| 2026-05-14 00:00 |
19:09:12.86 |
-55:06:33.5 |
HIP 94188 |
11.41 |
| 2026-05-14 12:00 |
19:09:09.28 |
-55:06:56.6 |
HIP 94188 |
11.86 |
| 2026-05-15 00:00 |
19:09:05.66 |
-55:07:19.7 |
HIP 94188 |
12.33 |
| 2026-05-15 12:00 |
19:09:02.00 |
-55:07:42.6 |
HIP 94188 |
12.83 |
| 2026-05-16 00:00 |
19:08:58.30 |
-55:08:05.4 |
HIP 94188 |
13.34 |
| 2026-05-16 12:00 |
19:08:54.55 |
-55:08:28.0 |
HIP 94188 |
13.87 |
| 2026-05-17 00:00 |
19:08:50.76 |
-55:08:50.6 |
HIP 94188 |
14.42 |
| 2026-05-17 12:00 |
19:08:46.94 |
-55:09:13.0 |
HIP 94188 |
14.98 |
| 2026-05-18 00:00 |
19:08:43.07 |
-55:09:35.3 |
HIP 94188 |
15.56 |
| 2026-05-18 12:00 |
19:08:39.16 |
-55:09:57.5 |
HIP 94188 |
16.14 |
| 2026-05-19 00:00 |
19:08:35.21 |
-55:10:19.6 |
HIP 94188 |
16.74 |
| 2026-05-19 12:00 |
19:08:31.21 |
-55:10:41.5 |
HIP 94188 |
17.35 |
| 2026-05-20 00:00 |
19:08:27.18 |
-55:11:03.3 |
HIP 94188 |
17.97 |
| 2026-05-20 12:00 |
19:08:23.11 |
-55:11:24.9 |
HIP 94188 |
18.60 |
| 2026-05-21 00:00 |
19:08:19.00 |
-55:11:46.4 |
HIP 94188 |
19.24 |
| 2026-05-21 12:00 |
19:08:14.86 |
-55:12:07.8 |
HIP 94188 |
19.88 |
| 2026-05-22 00:00 |
19:08:10.67 |
-55:12:29.0 |
HIP 94188 |
20.54 |
| 2026-05-22 12:00 |
19:08:06.45 |
-55:12:50.1 |
HIP 94188 |
21.20 |
| 2026-05-23 00:00 |
19:08:02.18 |
-55:13:11.0 |
HIP 94188 |
21.87 |
| 2026-05-23 12:00 |
19:07:57.89 |
-55:13:31.8 |
HIP 94188 |
22.54 |
| 2026-05-24 00:00 |
19:07:53.55 |
-55:13:52.5 |
HIP 94188 |
23.22 |
| 2026-05-24 12:00 |
19:07:49.18 |
-55:14:13.0 |
HIP 94188 |
23.91 |
| 2026-05-25 00:00 |
19:07:44.77 |
-55:14:33.3 |
HIP 93791 |
23.73 |
| 2026-05-25 12:00 |
19:07:40.32 |
-55:14:53.5 |
HIP 93791 |
23.08 |
| 2026-05-26 00:00 |
19:07:35.84 |
-55:15:13.5 |
HIP 93791 |
22.44 |
| 2026-05-26 12:00 |
19:07:31.32 |
-55:15:33.4 |
HIP 93791 |
21.80 |
| 2026-05-27 00:00 |
19:07:26.77 |
-55:15:53.1 |
HIP 93791 |
21.16 |
| 2026-05-27 12:00 |
19:07:22.19 |
-55:16:12.6 |
HIP 93791 |
20.53 |
| 2026-05-28 00:00 |
19:07:17.57 |
-55:16:32.0 |
HIP 93791 |
19.90 |
| 2026-05-28 12:00 |
19:07:12.91 |
-55:16:51.2 |
HIP 93791 |
19.29 |
| 2026-05-29 00:00 |
19:07:08.23 |
-55:17:10.2 |
HIP 93791 |
18.68 |
| 2026-05-29 12:00 |
19:07:03.51 |
-55:17:29.1 |
HIP 93791 |
18.08 |
| 2026-05-30 00:00 |
19:06:58.75 |
-55:17:47.8 |
HIP 93791 |
17.49 |
| 2026-05-30 12:00 |
19:06:53.97 |
-55:18:06.3 |
HIP 93791 |
16.92 |
| 2026-05-31 00:00 |
19:06:49.15 |
-55:18:24.7 |
HIP 93791 |
16.36 |
| 2026-05-31 12:00 |
19:06:44.30 |
-55:18:42.8 |
HIP 93791 |
15.81 |
| 2026-06-01 00:00 |
19:06:39.42 |
-55:19:00.8 |
HIP 93791 |
15.29 |
| 2026-06-01 12:00 |
19:06:34.51 |
-55:19:18.6 |
HIP 93791 |
14.79 |
| 2026-06-02 00:00 |
19:06:29.56 |
-55:19:36.3 |
HIP 93791 |
14.31 |