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 |
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
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 |
+8.0172 |
-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) |
| 2026-07-29 00:00 |
14:26:50.42 |
-13:06:36.1 |
HIP 70634 |
12.58 |
| 2026-07-29 12:00 |
14:26:50.65 |
-13:07:01.9 |
HIP 70634 |
13.00 |
| 2026-07-30 00:00 |
14:26:50.94 |
-13:07:28.0 |
HIP 70634 |
13.43 |
| 2026-07-30 12:00 |
14:26:51.29 |
-13:07:54.3 |
HIP 70634 |
13.87 |
| 2026-07-31 00:00 |
14:26:51.69 |
-13:08:20.9 |
HIP 70634 |
14.30 |
| 2026-07-31 12:00 |
14:26:52.15 |
-13:08:47.6 |
HIP 70634 |
14.75 |
| 2026-08-01 00:00 |
14:26:52.66 |
-13:09:14.7 |
HIP 70634 |
15.19 |
| 2026-08-01 12:00 |
14:26:53.23 |
-13:09:42.0 |
HIP 70634 |
15.65 |
| 2026-08-02 00:00 |
14:26:53.86 |
-13:10:09.5 |
HIP 70634 |
16.10 |
| 2026-08-02 12:00 |
14:26:54.54 |
-13:10:37.3 |
HIP 70714 |
16.50 |
| 2026-08-03 00:00 |
14:26:55.28 |
-13:11:05.3 |
HIP 70714 |
16.06 |
| 2026-08-03 12:00 |
14:26:56.07 |
-13:11:33.5 |
HIP 70714 |
15.61 |
| 2026-08-04 00:00 |
14:26:56.92 |
-13:12:02.0 |
HIP 70714 |
15.15 |
| 2026-08-04 12:00 |
14:26:57.82 |
-13:12:30.8 |
HIP 70714 |
14.68 |
| 2026-08-05 00:00 |
14:26:58.78 |
-13:12:59.7 |
HIP 70714 |
14.20 |
| 2026-08-05 12:00 |
14:26:59.79 |
-13:13:29.0 |
HIP 70714 |
13.71 |
| 2026-08-06 00:00 |
14:27:00.86 |
-13:13:58.4 |
HIP 70714 |
13.21 |
| 2026-08-06 12:00 |
14:27:01.98 |
-13:14:28.1 |
HIP 70714 |
12.70 |
| 2026-08-07 00:00 |
14:27:03.16 |
-13:14:58.0 |
HIP 70714 |
12.19 |
| 2026-08-07 12:00 |
14:27:04.40 |
-13:15:28.2 |
HIP 70714 |
11.67 |
| 2026-08-08 00:00 |
14:27:05.69 |
-13:15:58.6 |
HIP 70714 |
11.14 |
| 2026-08-08 12:00 |
14:27:07.03 |
-13:16:29.3 |
HIP 70714 |
10.61 |
| 2026-08-09 00:00 |
14:27:08.43 |
-13:17:00.1 |
HIP 70714 |
10.06 |
| 2026-08-09 12:00 |
14:27:09.88 |
-13:17:31.3 |
HIP 70714 |
9.52 |
| 2026-08-10 00:00 |
14:27:11.39 |
-13:18:02.6 |
HIP 70714 |
8.97 |
| 2026-08-10 12:00 |
14:27:12.95 |
-13:18:34.2 |
HIP 70714 |
8.42 |
| 2026-08-11 00:00 |
14:27:14.56 |
-13:19:06.0 |
HIP 70714 |
7.87 |
| 2026-08-11 12:00 |
14:27:16.23 |
-13:19:38.1 |
HIP 70714 |
7.33 |
| 2026-08-12 00:00 |
14:27:17.96 |
-13:20:10.4 |
HIP 70714 |
6.80 |
| 2026-08-12 12:00 |
14:27:19.73 |
-13:20:42.9 |
HIP 70714 |
6.28 |
| 2026-08-13 00:00 |
14:27:21.56 |
-13:21:15.6 |
HIP 70714 |
5.79 |
| 2026-08-13 12:00 |
14:27:23.45 |
-13:21:48.6 |
HIP 70714 |
5.33 |
| 2026-08-14 00:00 |
14:27:25.39 |
-13:22:21.8 |
HIP 70714 |
4.91 |
| 2026-08-14 12:00 |
14:27:27.38 |
-13:22:55.2 |
HIP 70714 |
4.57 |
| 2026-08-15 00:00 |
14:27:29.42 |
-13:23:28.9 |
HIP 70714 |
4.32 |
| 2026-08-15 12:00 |
14:27:31.51 |
-13:24:02.7 |
HIP 70714 |
4.18 |
| 2026-08-16 00:00 |
14:27:33.66 |
-13:24:36.8 |
HIP 70714 |
4.17 |
| 2026-08-16 12:00 |
14:27:35.86 |
-13:25:11.1 |
HIP 70714 |
4.30 |
| 2026-08-17 00:00 |
14:27:38.12 |
-13:25:45.7 |
HIP 70714 |
4.55 |
| 2026-08-17 12:00 |
14:27:40.42 |
-13:26:20.4 |
HIP 70714 |
4.93 |
| 2026-08-18 00:00 |
14:27:42.78 |
-13:26:55.4 |
HIP 70714 |
5.40 |
| 2026-08-18 12:00 |
14:27:45.18 |
-13:27:30.6 |
HIP 70714 |
5.95 |
| 2026-08-19 00:00 |
14:27:47.64 |
-13:28:06.0 |
HIP 70714 |
6.57 |