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
$$
M_a = (5.795 + 3.046\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.795 |
| n |
3.046 |
| gf |
1.000 |
| gb |
-0.935 |
| k |
1.000 |
| 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) |
| 2026-09-20 00:00 |
17:01:14.32 |
-15:53:26.7 |
HIP 83242 |
14.35 |
| 2026-09-20 12:00 |
17:01:14.60 |
-15:53:36.7 |
HIP 83242 |
14.53 |
| 2026-09-21 00:00 |
17:01:14.92 |
-15:53:46.6 |
HIP 83242 |
14.71 |
| 2026-09-21 12:00 |
17:01:15.27 |
-15:53:56.6 |
HIP 83242 |
14.90 |
| 2026-09-22 00:00 |
17:01:15.66 |
-15:54:06.6 |
HIP 83242 |
15.09 |
| 2026-09-22 12:00 |
17:01:16.08 |
-15:54:16.7 |
HIP 83242 |
15.28 |
| 2026-09-23 00:00 |
17:01:16.53 |
-15:54:26.8 |
HIP 83242 |
15.48 |
| 2026-09-23 12:00 |
17:01:17.03 |
-15:54:36.9 |
HIP 83242 |
15.69 |
| 2026-09-24 00:00 |
17:01:17.55 |
-15:54:47.0 |
HIP 83242 |
15.89 |
| 2026-09-24 12:00 |
17:01:18.11 |
-15:54:57.2 |
HIP 83242 |
16.11 |
| 2026-09-25 00:00 |
17:01:18.70 |
-15:55:07.4 |
HIP 83242 |
16.32 |
| 2026-09-25 12:00 |
17:01:19.33 |
-15:55:17.6 |
HIP 83242 |
16.55 |
| 2026-09-26 00:00 |
17:01:20.00 |
-15:55:27.8 |
HIP 83242 |
16.77 |
| 2026-09-26 12:00 |
17:01:20.69 |
-15:55:38.1 |
HIP 83242 |
17.00 |
| 2026-09-27 00:00 |
17:01:21.42 |
-15:55:48.4 |
HIP 83242 |
17.24 |
| 2026-09-27 12:00 |
17:01:22.19 |
-15:55:58.7 |
HIP 83242 |
17.48 |
| 2026-09-28 00:00 |
17:01:22.98 |
-15:56:09.1 |
HIP 83242 |
17.72 |
| 2026-09-28 12:00 |
17:01:23.81 |
-15:56:19.4 |
HIP 83242 |
17.97 |
| 2026-09-29 00:00 |
17:01:24.68 |
-15:56:29.8 |
HIP 83242 |
18.23 |
| 2026-09-29 12:00 |
17:01:25.58 |
-15:56:40.2 |
HIP 83242 |
18.49 |
| 2026-09-30 00:00 |
17:01:26.51 |
-15:56:50.7 |
HIP 83242 |
18.75 |
| 2026-09-30 12:00 |
17:01:27.47 |
-15:57:01.1 |
HIP 83242 |
19.02 |
| 2026-10-01 00:00 |
17:01:28.47 |
-15:57:11.6 |
HIP 83242 |
19.30 |
| 2026-10-01 12:00 |
17:01:29.50 |
-15:57:22.1 |
HIP 83242 |
19.58 |
| 2026-10-02 00:00 |
17:01:30.56 |
-15:57:32.6 |
HIP 83242 |
19.86 |
| 2026-10-02 12:00 |
17:01:31.66 |
-15:57:43.1 |
HIP 83242 |
20.15 |
| 2026-10-03 00:00 |
17:01:32.79 |
-15:57:53.7 |
HIP 83242 |
20.45 |
| 2026-10-03 12:00 |
17:01:33.95 |
-15:58:04.2 |
HIP 83242 |
20.75 |
| 2026-10-04 00:00 |
17:01:35.14 |
-15:58:14.8 |
HIP 83242 |
21.05 |
| 2026-10-04 12:00 |
17:01:36.37 |
-15:58:25.4 |
HIP 83242 |
21.36 |
| 2026-10-05 00:00 |
17:01:37.63 |
-15:58:36.0 |
HIP 83242 |
21.68 |
| 2026-10-05 12:00 |
17:01:38.92 |
-15:58:46.7 |
HIP 83242 |
22.00 |
| 2026-10-06 00:00 |
17:01:40.24 |
-15:58:57.3 |
HIP 83242 |
22.33 |
| 2026-10-06 12:00 |
17:01:41.59 |
-15:59:08.0 |
HIP 83242 |
22.67 |
| 2026-10-07 00:00 |
17:01:42.98 |
-15:59:18.6 |
HIP 83242 |
23.01 |
| 2026-10-07 12:00 |
17:01:44.40 |
-15:59:29.3 |
HIP 83242 |
23.35 |
| 2026-10-08 00:00 |
17:01:45.84 |
-15:59:40.0 |
HIP 83242 |
23.70 |
| 2026-10-08 12:00 |
17:01:47.32 |
-15:59:50.7 |
HIP 83242 |
24.06 |
| 2026-10-09 00:00 |
17:01:48.83 |
-16:00:01.4 |
HIP 83242 |
24.43 |
| 2026-10-09 12:00 |
17:01:50.38 |
-16:00:12.1 |
HIP 83242 |
24.80 |
| 2026-10-10 00:00 |
17:01:51.95 |
-16:00:22.9 |
HIP 83242 |
25.17 |
| 2026-10-10 12:00 |
17:01:53.55 |
-16:00:33.6 |
HIP 83242 |
25.55 |
| 2026-10-11 00:00 |
17:01:55.18 |
-16:00:44.3 |
HIP 83242 |
25.94 |