メタデータ
| 項目 |
値 |
| Designation |
C/2010 U3 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2019-02-26T02:57:05.869440Z |
| Orbit solution date (soln_date, UTC) |
2023-05-10T17:42:22Z |
| Obs used |
4354 |
| NEO |
- |
| M1 |
6.300 |
| K1 |
6.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2017-06-18.0000000 |
| e |
1.00085475 |
| q (au) |
8.445819 |
| a (au) |
-9881.022043 |
| i (deg) |
55.512084 |
| Ω (om, deg) |
43.072839 |
| ω (w, deg) |
88.065133 |
| M (ma, deg) |
-0.000620 |
等級
散乱 + 全体線形
$$
M_a = (4.728 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.728 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.962 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2005-11-05 |
2010-11-28 |
+3.2013 |
-4.882 |
| 2010-11-28 |
2014-12-20 |
-9.5815 |
+10.967 |
| 2014-12-20 |
2016-01-14 |
-1.5209 |
+2.101 |
| 2016-01-14 |
2017-01-27 |
-14.7858 |
+15.392 |
| 2017-01-27 |
2019-02-26 |
+8.0171 |
-7.205 |
| 2019-02-26 |
2021-03-05 |
+65.7270 |
-61.376 |
| 2021-03-05 |
2022-12-25 |
-18.5573 |
+20.893 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
14:36:42.31 |
-12:47:18.4 |
HIP 71441 |
17.73 |
| 2026-05-12 12:00 |
14:36:35.66 |
-12:47:12.0 |
HIP 71441 |
17.59 |
| 2026-05-13 00:00 |
14:36:29.02 |
-12:47:05.7 |
HIP 71441 |
17.59 |
| 2026-05-13 12:00 |
14:36:22.40 |
-12:46:59.4 |
HIP 71441 |
17.74 |
| 2026-05-14 00:00 |
14:36:15.79 |
-12:46:53.2 |
HIP 71441 |
18.04 |
| 2026-05-14 12:00 |
14:36:09.19 |
-12:46:47.2 |
HIP 71441 |
18.48 |
| 2026-05-15 00:00 |
14:36:02.61 |
-12:46:41.2 |
HIP 71441 |
19.04 |
| 2026-05-15 12:00 |
14:35:56.05 |
-12:46:35.3 |
HIP 71441 |
19.72 |
| 2026-05-16 00:00 |
14:35:49.50 |
-12:46:29.5 |
HIP 71441 |
20.50 |
| 2026-05-16 12:00 |
14:35:42.98 |
-12:46:23.8 |
HIP 71441 |
21.37 |
| 2026-05-17 00:00 |
14:35:36.47 |
-12:46:18.2 |
HIP 71441 |
22.32 |
| 2026-05-17 12:00 |
14:35:29.98 |
-12:46:12.8 |
HIP 71253 |
23.24 |
| 2026-05-18 00:00 |
14:35:23.51 |
-12:46:07.4 |
HIP 71253 |
22.00 |
| 2026-05-18 12:00 |
14:35:17.06 |
-12:46:02.1 |
HIP 71253 |
20.80 |
| 2026-05-19 00:00 |
14:35:10.63 |
-12:45:57.0 |
HIP 71253 |
19.67 |
| 2026-05-19 12:00 |
14:35:04.22 |
-12:45:52.0 |
HIP 71253 |
18.60 |
| 2026-05-20 00:00 |
14:34:57.83 |
-12:45:47.1 |
HIP 71253 |
17.61 |
| 2026-05-20 12:00 |
14:34:51.47 |
-12:45:42.3 |
HIP 71253 |
16.71 |
| 2026-05-21 00:00 |
14:34:45.13 |
-12:45:37.6 |
HIP 71253 |
15.92 |
| 2026-05-21 12:00 |
14:34:38.81 |
-12:45:33.1 |
HIP 71253 |
15.25 |
| 2026-05-22 00:00 |
14:34:32.52 |
-12:45:28.7 |
HIP 71253 |
14.71 |
| 2026-05-22 12:00 |
14:34:26.26 |
-12:45:24.4 |
HIP 71253 |
14.33 |
| 2026-05-23 00:00 |
14:34:20.02 |
-12:45:20.3 |
HIP 71253 |
14.10 |
| 2026-05-23 12:00 |
14:34:13.80 |
-12:45:16.3 |
HIP 71253 |
14.03 |
| 2026-05-24 00:00 |
14:34:07.61 |
-12:45:12.4 |
HIP 71253 |
14.13 |
| 2026-05-24 12:00 |
14:34:01.45 |
-12:45:08.7 |
HIP 71253 |
14.40 |
| 2026-05-25 00:00 |
14:33:55.32 |
-12:45:05.1 |
HIP 71253 |
14.80 |
| 2026-05-25 12:00 |
14:33:49.21 |
-12:45:01.7 |
HIP 71253 |
15.35 |
| 2026-05-26 00:00 |
14:33:43.13 |
-12:44:58.4 |
HIP 71253 |
16.01 |
| 2026-05-26 12:00 |
14:33:37.08 |
-12:44:55.2 |
HIP 71253 |
16.78 |
| 2026-05-27 00:00 |
14:33:31.06 |
-12:44:52.2 |
HIP 71253 |
17.63 |
| 2026-05-27 12:00 |
14:33:25.07 |
-12:44:49.4 |
HIP 71253 |
18.56 |
| 2026-05-28 00:00 |
14:33:19.11 |
-12:44:46.7 |
HIP 71113 |
19.15 |
| 2026-05-28 12:00 |
14:33:13.19 |
-12:44:44.1 |
HIP 71113 |
18.37 |
| 2026-05-29 00:00 |
14:33:07.29 |
-12:44:41.7 |
HIP 71113 |
17.67 |
| 2026-05-29 12:00 |
14:33:01.42 |
-12:44:39.5 |
HIP 71113 |
17.07 |
| 2026-05-30 00:00 |
14:32:55.59 |
-12:44:37.4 |
HIP 71113 |
16.57 |
| 2026-05-30 12:00 |
14:32:49.79 |
-12:44:35.5 |
HIP 71113 |
16.18 |
| 2026-05-31 00:00 |
14:32:44.02 |
-12:44:33.8 |
HIP 71113 |
15.91 |
| 2026-05-31 12:00 |
14:32:38.29 |
-12:44:32.2 |
HIP 71113 |
15.75 |
| 2026-06-01 00:00 |
14:32:32.59 |
-12:44:30.8 |
HIP 71113 |
15.72 |
| 2026-06-01 12:00 |
14:32:26.92 |
-12:44:29.5 |
HIP 71113 |
15.80 |
| 2026-06-02 00:00 |
14:32:21.29 |
-12:44:28.5 |
HIP 71113 |
16.00 |