メタデータ
| 項目 |
値 |
| Designation |
C/2008 S3 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-06-07T00:27:12.735360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:23Z |
| Obs used |
1909 |
| NEO |
- |
| M1 |
8.300 |
| K1 |
6.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-04-19.0000000 |
| e |
1.00107749 |
| q (au) |
8.017919 |
| a (au) |
-7441.315951 |
| i (deg) |
162.702798 |
| Ω (om, deg) |
54.938054 |
| ω (w, deg) |
39.937767 |
| M (ma, deg) |
-0.000075 |
等級
散乱 + 全体線形
$$
M_a = (5.796 + 3.046\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.796 |
| n |
3.046 |
| gf |
0.978 |
| gb |
-0.935 |
| k |
1.000 |
| δ90 |
9.945 |
| 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 |
17:21:10.65 |
-15:56:59.8 |
HIP 84791 |
26.40 |
| 2026-03-26 12:00 |
17:21:08.98 |
-15:56:52.9 |
HIP 84791 |
26.20 |
| 2026-03-27 00:00 |
17:21:07.28 |
-15:56:45.9 |
HIP 84791 |
26.00 |
| 2026-03-27 12:00 |
17:21:05.53 |
-15:56:38.9 |
HIP 84791 |
25.81 |
| 2026-03-28 00:00 |
17:21:03.75 |
-15:56:31.9 |
HIP 84791 |
25.61 |
| 2026-03-28 12:00 |
17:21:01.93 |
-15:56:24.9 |
HIP 84791 |
25.41 |
| 2026-03-29 00:00 |
17:21:00.08 |
-15:56:17.9 |
HIP 84791 |
25.21 |
| 2026-03-29 12:00 |
17:20:58.18 |
-15:56:10.8 |
HIP 84791 |
25.02 |
| 2026-03-30 00:00 |
17:20:56.25 |
-15:56:03.7 |
HIP 84791 |
24.82 |
| 2026-03-30 12:00 |
17:20:54.29 |
-15:55:56.6 |
HIP 84791 |
24.63 |
| 2026-03-31 00:00 |
17:20:52.28 |
-15:55:49.5 |
HIP 84791 |
24.44 |
| 2026-03-31 12:00 |
17:20:50.24 |
-15:55:42.4 |
HIP 84791 |
24.26 |
| 2026-04-01 00:00 |
17:20:48.17 |
-15:55:35.2 |
HIP 84791 |
24.08 |
| 2026-04-01 12:00 |
17:20:46.05 |
-15:55:28.1 |
HIP 84791 |
23.91 |
| 2026-04-02 00:00 |
17:20:43.90 |
-15:55:20.9 |
HIP 84791 |
23.74 |
| 2026-04-02 12:00 |
17:20:41.72 |
-15:55:13.7 |
HIP 84791 |
23.58 |
| 2026-04-03 00:00 |
17:20:39.49 |
-15:55:06.5 |
HIP 84791 |
23.42 |
| 2026-04-03 12:00 |
17:20:37.24 |
-15:54:59.2 |
HIP 84791 |
23.28 |
| 2026-04-04 00:00 |
17:20:34.94 |
-15:54:52.0 |
HIP 84791 |
23.14 |
| 2026-04-04 12:00 |
17:20:32.61 |
-15:54:44.8 |
HIP 84791 |
23.01 |
| 2026-04-05 00:00 |
17:20:30.24 |
-15:54:37.5 |
HIP 84791 |
22.90 |
| 2026-04-05 12:00 |
17:20:27.84 |
-15:54:30.2 |
HIP 84791 |
22.79 |
| 2026-04-06 00:00 |
17:20:25.40 |
-15:54:23.0 |
HIP 84791 |
22.70 |
| 2026-04-06 12:00 |
17:20:22.93 |
-15:54:15.7 |
HIP 84791 |
22.62 |
| 2026-04-07 00:00 |
17:20:20.42 |
-15:54:08.4 |
HIP 84791 |
22.55 |
| 2026-04-07 12:00 |
17:20:17.88 |
-15:54:01.1 |
HIP 84791 |
22.50 |
| 2026-04-08 00:00 |
17:20:15.30 |
-15:53:53.7 |
HIP 84791 |
22.46 |
| 2026-04-08 12:00 |
17:20:12.68 |
-15:53:46.4 |
HIP 84791 |
22.44 |
| 2026-04-09 00:00 |
17:20:10.03 |
-15:53:39.1 |
HIP 84791 |
22.44 |
| 2026-04-09 12:00 |
17:20:07.35 |
-15:53:31.7 |
HIP 84791 |
22.45 |
| 2026-04-10 00:00 |
17:20:04.63 |
-15:53:24.4 |
HIP 84675 |
22.18 |
| 2026-04-10 12:00 |
17:20:01.88 |
-15:53:17.0 |
HIP 84675 |
21.61 |
| 2026-04-11 00:00 |
17:19:59.09 |
-15:53:09.7 |
HIP 84675 |
21.05 |
| 2026-04-11 12:00 |
17:19:56.27 |
-15:53:02.3 |
HIP 84675 |
20.48 |
| 2026-04-12 00:00 |
17:19:53.42 |
-15:52:55.0 |
HIP 84675 |
19.92 |
| 2026-04-12 12:00 |
17:19:50.53 |
-15:52:47.6 |
HIP 84675 |
19.36 |
| 2026-04-13 00:00 |
17:19:47.60 |
-15:52:40.2 |
HIP 84675 |
18.80 |
| 2026-04-13 12:00 |
17:19:44.65 |
-15:52:32.9 |
HIP 84675 |
18.24 |
| 2026-04-14 00:00 |
17:19:41.66 |
-15:52:25.5 |
HIP 84675 |
17.69 |
| 2026-04-14 12:00 |
17:19:38.63 |
-15:52:18.1 |
HIP 84675 |
17.14 |
| 2026-04-15 00:00 |
17:19:35.58 |
-15:52:10.8 |
HIP 84675 |
16.61 |
| 2026-04-15 12:00 |
17:19:32.49 |
-15:52:03.4 |
HIP 84675 |
16.08 |
| 2026-04-16 00:00 |
17:19:29.37 |
-15:51:56.1 |
HIP 84675 |
15.57 |