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) |
| 2026-03-26 00:00 |
19:11:11.10 |
-54:25:41.5 |
HIP 94175 |
11.29 |
| 2026-03-26 12:00 |
19:11:12.31 |
-54:26:05.0 |
HIP 94175 |
11.68 |
| 2026-03-27 00:00 |
19:11:13.48 |
-54:26:28.6 |
HIP 94175 |
12.08 |
| 2026-03-27 12:00 |
19:11:14.60 |
-54:26:52.2 |
HIP 94175 |
12.46 |
| 2026-03-28 00:00 |
19:11:15.67 |
-54:27:16.0 |
HIP 94175 |
12.85 |
| 2026-03-28 12:00 |
19:11:16.68 |
-54:27:39.8 |
HIP 94175 |
13.24 |
| 2026-03-29 00:00 |
19:11:17.65 |
-54:28:03.7 |
HIP 94175 |
13.62 |
| 2026-03-29 12:00 |
19:11:18.57 |
-54:28:27.8 |
HIP 94175 |
14.01 |
| 2026-03-30 00:00 |
19:11:19.44 |
-54:28:51.9 |
HIP 94414 |
14.24 |
| 2026-03-30 12:00 |
19:11:20.26 |
-54:29:16.1 |
HIP 94414 |
14.12 |
| 2026-03-31 00:00 |
19:11:21.03 |
-54:29:40.3 |
HIP 94414 |
14.02 |
| 2026-03-31 12:00 |
19:11:21.76 |
-54:30:04.7 |
HIP 94414 |
13.94 |
| 2026-04-01 00:00 |
19:11:22.43 |
-54:30:29.1 |
HIP 94414 |
13.88 |
| 2026-04-01 12:00 |
19:11:23.05 |
-54:30:53.6 |
HIP 94414 |
13.84 |
| 2026-04-02 00:00 |
19:11:23.62 |
-54:31:18.1 |
HIP 94414 |
13.82 |
| 2026-04-02 12:00 |
19:11:24.14 |
-54:31:42.8 |
HIP 94414 |
13.82 |
| 2026-04-03 00:00 |
19:11:24.61 |
-54:32:07.5 |
HIP 94414 |
13.84 |
| 2026-04-03 12:00 |
19:11:25.03 |
-54:32:32.3 |
HIP 94414 |
13.88 |
| 2026-04-04 00:00 |
19:11:25.40 |
-54:32:57.1 |
HIP 94414 |
13.93 |
| 2026-04-04 12:00 |
19:11:25.72 |
-54:33:22.0 |
HIP 94414 |
14.01 |
| 2026-04-05 00:00 |
19:11:25.99 |
-54:33:47.0 |
HIP 94414 |
14.11 |
| 2026-04-05 12:00 |
19:11:26.21 |
-54:34:12.0 |
HIP 94414 |
14.22 |
| 2026-04-06 00:00 |
19:11:26.38 |
-54:34:37.1 |
HIP 94414 |
14.36 |
| 2026-04-06 12:00 |
19:11:26.50 |
-54:35:02.3 |
HIP 94414 |
14.51 |
| 2026-04-07 00:00 |
19:11:26.56 |
-54:35:27.5 |
HIP 94414 |
14.68 |
| 2026-04-07 12:00 |
19:11:26.58 |
-54:35:52.8 |
HIP 94414 |
14.87 |
| 2026-04-08 00:00 |
19:11:26.55 |
-54:36:18.1 |
HIP 94414 |
15.07 |
| 2026-04-08 12:00 |
19:11:26.46 |
-54:36:43.4 |
HIP 94414 |
15.29 |
| 2026-04-09 00:00 |
19:11:26.32 |
-54:37:08.8 |
HIP 94414 |
15.52 |
| 2026-04-09 12:00 |
19:11:26.14 |
-54:37:34.3 |
HIP 94414 |
15.77 |
| 2026-04-10 00:00 |
19:11:25.90 |
-54:37:59.8 |
HIP 94414 |
16.03 |
| 2026-04-10 12:00 |
19:11:25.61 |
-54:38:25.3 |
HIP 94414 |
16.31 |
| 2026-04-11 00:00 |
19:11:25.27 |
-54:38:50.9 |
HIP 94414 |
16.59 |
| 2026-04-11 12:00 |
19:11:24.88 |
-54:39:16.5 |
HIP 94414 |
16.89 |
| 2026-04-12 00:00 |
19:11:24.44 |
-54:39:42.1 |
HIP 94414 |
17.21 |
| 2026-04-12 12:00 |
19:11:23.95 |
-54:40:07.8 |
HIP 94414 |
17.53 |
| 2026-04-13 00:00 |
19:11:23.40 |
-54:40:33.5 |
HIP 94414 |
17.86 |
| 2026-04-13 12:00 |
19:11:22.81 |
-54:40:59.3 |
HIP 94414 |
18.21 |
| 2026-04-14 00:00 |
19:11:22.16 |
-54:41:25.0 |
HIP 94414 |
18.56 |
| 2026-04-14 12:00 |
19:11:21.46 |
-54:41:50.8 |
HIP 94414 |
18.92 |
| 2026-04-15 00:00 |
19:11:20.71 |
-54:42:16.6 |
HIP 94100 |
19.06 |
| 2026-04-15 12:00 |
19:11:19.91 |
-54:42:42.4 |
HIP 94100 |
18.78 |
| 2026-04-16 00:00 |
19:11:19.06 |
-54:43:08.3 |
HIP 94100 |
18.49 |