メタデータ
| 項目 |
値 |
| Designation |
P/2008 O3 (Boattini) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-06-03T01:59:52.333440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:21Z |
| Obs used |
54 |
| NEO |
- |
| M1 |
5.500 |
| K1 |
28.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2008-08-28.0000000 |
| e |
0.69495599 |
| q (au) |
2.497269 |
| a (au) |
8.186587 |
| i (deg) |
32.269872 |
| Ω (om, deg) |
47.572666 |
| ω (w, deg) |
340.983593 |
| M (ma, deg) |
3.615161 |
等級
散乱 + 全体線形
$$
M_a = (12.607 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.607 |
| n |
6.000 |
| gf |
0.998 |
| gb |
-0.664 |
| k |
0.800 |
| δ90 |
9.998 |
| 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) |
| 2026-06-01 00:00 |
15:19:26.74 |
-23:46:56.3 |
HIP 74870 |
26.80 |
| 2026-06-01 12:00 |
15:19:16.64 |
-23:46:33.1 |
HIP 74870 |
24.90 |
| 2026-06-02 00:00 |
15:19:06.57 |
-23:46:09.8 |
HIP 74870 |
23.09 |
| 2026-06-02 12:00 |
15:18:56.53 |
-23:45:46.5 |
HIP 74870 |
21.39 |
| 2026-06-03 00:00 |
15:18:46.54 |
-23:45:23.2 |
HIP 74870 |
19.82 |
| 2026-06-03 12:00 |
15:18:36.58 |
-23:44:59.8 |
HIP 74870 |
18.41 |
| 2026-06-04 00:00 |
15:18:26.66 |
-23:44:36.4 |
HIP 74870 |
17.20 |
| 2026-06-04 12:00 |
15:18:16.78 |
-23:44:13.0 |
HIP 74870 |
16.23 |
| 2026-06-05 00:00 |
15:18:06.95 |
-23:43:49.5 |
HIP 74870 |
15.54 |
| 2026-06-05 12:00 |
15:17:57.15 |
-23:43:26.0 |
HIP 74870 |
15.17 |
| 2026-06-06 00:00 |
15:17:47.40 |
-23:43:02.5 |
HIP 74870 |
15.14 |
| 2026-06-06 12:00 |
15:17:37.70 |
-23:42:39.0 |
HIP 74870 |
15.43 |
| 2026-06-07 00:00 |
15:17:28.04 |
-23:42:15.4 |
HIP 74870 |
16.04 |
| 2026-06-07 12:00 |
15:17:18.42 |
-23:41:51.9 |
HIP 74870 |
16.92 |
| 2026-06-08 00:00 |
15:17:08.85 |
-23:41:28.4 |
HIP 74870 |
18.03 |
| 2026-06-08 12:00 |
15:16:59.33 |
-23:41:04.8 |
HIP 74870 |
19.32 |
| 2026-06-09 00:00 |
15:16:49.86 |
-23:40:41.3 |
HIP 74870 |
20.77 |
| 2026-06-09 12:00 |
15:16:40.44 |
-23:40:17.8 |
HIP 74870 |
22.32 |
| 2026-06-10 00:00 |
15:16:31.07 |
-23:39:54.3 |
HIP 74870 |
23.97 |
| 2026-06-10 12:00 |
15:16:21.76 |
-23:39:30.8 |
HIP 74870 |
25.69 |
| 2026-06-11 00:00 |
15:16:12.49 |
-23:39:07.4 |
HIP 74870 |
27.46 |
| 2026-06-11 12:00 |
15:16:03.28 |
-23:38:44.0 |
HIP 74870 |
29.27 |
| 2026-06-12 00:00 |
15:15:54.12 |
-23:38:20.6 |
HIP 74529 |
29.91 |
| 2026-06-12 12:00 |
15:15:45.02 |
-23:37:57.3 |
HIP 74529 |
27.79 |
| 2026-06-13 00:00 |
15:15:35.98 |
-23:37:34.0 |
HIP 74529 |
25.68 |
| 2026-06-13 12:00 |
15:15:26.99 |
-23:37:10.8 |
HIP 74529 |
23.59 |
| 2026-06-14 00:00 |
15:15:18.06 |
-23:36:47.6 |
HIP 74529 |
21.51 |
| 2026-06-14 12:00 |
15:15:09.19 |
-23:36:24.4 |
HIP 74529 |
19.44 |
| 2026-06-15 00:00 |
15:15:00.39 |
-23:36:01.4 |
HIP 74529 |
17.39 |
| 2026-06-15 12:00 |
15:14:51.64 |
-23:35:38.4 |
HIP 74529 |
15.35 |
| 2026-06-16 00:00 |
15:14:42.95 |
-23:35:15.5 |
HIP 74529 |
13.32 |
| 2026-06-16 12:00 |
15:14:34.33 |
-23:34:52.6 |
HIP 74529 |
11.31 |
| 2026-06-17 00:00 |
15:14:25.77 |
-23:34:29.9 |
HIP 74529 |
9.31 |
| 2026-06-17 12:00 |
15:14:17.28 |
-23:34:07.2 |
HIP 74529 |
7.33 |
| 2026-06-18 00:00 |
15:14:08.85 |
-23:33:44.6 |
HIP 74529 |
5.37 |
| 2026-06-18 12:00 |
15:14:00.49 |
-23:33:22.1 |
HIP 74529 |
3.42 |
| 2026-06-19 00:00 |
15:13:52.20 |
-23:32:59.8 |
HIP 74529 |
1.49 |
| 2026-06-19 12:00 |
15:13:43.97 |
-23:32:37.5 |
HIP 74529 |
0.52 |
| 2026-06-20 00:00 |
15:13:35.81 |
-23:32:15.3 |
HIP 74529 |
2.37 |
| 2026-06-20 12:00 |
15:13:27.72 |
-23:31:53.2 |
HIP 74529 |
4.26 |
| 2026-06-21 00:00 |
15:13:19.70 |
-23:31:31.3 |
HIP 74529 |
6.13 |
| 2026-06-21 12:00 |
15:13:11.76 |
-23:31:09.5 |
HIP 74529 |
7.98 |
| 2026-06-22 00:00 |
15:13:03.88 |
-23:30:47.8 |
HIP 74529 |
9.82 |