C/2013 H2 (Boattini)
メタデータ
| 項目 |
値 |
| Designation |
C/2013 H2 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-01-23T05:03:10.604160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:35Z |
| Obs used |
221 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
9.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2013-12-30.0000000 |
| e |
1.00184898 |
| q (au) |
7.498743 |
| a (au) |
-4055.614389 |
| i (deg) |
128.396346 |
| Ω (om, deg) |
262.745961 |
| ω (w, deg) |
35.998358 |
| M (ma, deg) |
-0.000092 |
等級
散乱 + 全体線形
$$
M_a = (0.912 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
0.912 |
| n |
6.000 |
| gf |
0.826 |
| gb |
-0.918 |
| k |
1.000 |
| δ90 |
4.146 |
| 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) |
| 2026-02-03 00:00 |
07:06:38.14 |
+47:47:46.7 |
HIP 34375 |
9.63 |
| 2026-02-03 12:00 |
07:06:30.60 |
+47:47:30.0 |
HIP 34375 |
10.89 |
| 2026-02-04 00:00 |
07:06:23.10 |
+47:47:13.0 |
HIP 34375 |
12.15 |
| 2026-02-04 12:00 |
07:06:15.63 |
+47:46:55.7 |
HIP 34168 |
11.20 |
| 2026-02-05 00:00 |
07:06:08.21 |
+47:46:38.2 |
HIP 34168 |
9.95 |
| 2026-02-05 12:00 |
07:06:00.82 |
+47:46:20.3 |
HIP 34168 |
8.71 |
| 2026-02-06 00:00 |
07:05:53.47 |
+47:46:02.1 |
HIP 34168 |
7.49 |
| 2026-02-06 12:00 |
07:05:46.16 |
+47:45:43.6 |
HIP 34168 |
6.29 |
| 2026-02-07 00:00 |
07:05:38.89 |
+47:45:24.9 |
HIP 34168 |
5.14 |
| 2026-02-07 12:00 |
07:05:31.66 |
+47:45:05.8 |
HIP 34168 |
4.06 |
| 2026-02-08 00:00 |
07:05:24.47 |
+47:44:46.5 |
HIP 34168 |
3.12 |
| 2026-02-08 12:00 |
07:05:17.33 |
+47:44:26.8 |
HIP 34168 |
2.49 |
| 2026-02-09 00:00 |
07:05:10.22 |
+47:44:06.9 |
HIP 34168 |
2.40 |
| 2026-02-09 12:00 |
07:05:03.16 |
+47:43:46.7 |
HIP 34168 |
2.90 |
| 2026-02-10 00:00 |
07:04:56.15 |
+47:43:26.2 |
HIP 34168 |
3.75 |
| 2026-02-10 12:00 |
07:04:49.17 |
+47:43:05.4 |
HIP 34168 |
4.77 |
| 2026-02-11 00:00 |
07:04:42.25 |
+47:42:44.3 |
HIP 34168 |
5.86 |
| 2026-02-11 12:00 |
07:04:35.36 |
+47:42:23.0 |
HIP 34168 |
7.00 |
| 2026-02-12 00:00 |
07:04:28.52 |
+47:42:01.4 |
HIP 34168 |
8.15 |
| 2026-02-12 12:00 |
07:04:21.73 |
+47:41:39.5 |
HIP 34168 |
9.31 |
| 2026-02-13 00:00 |
07:04:14.98 |
+47:41:17.3 |
HIP 34168 |
10.47 |
| 2026-02-13 12:00 |
07:04:08.29 |
+47:40:54.9 |
HIP 34168 |
11.64 |
| 2026-02-14 00:00 |
07:04:01.63 |
+47:40:32.1 |
HIP 34168 |
12.80 |
| 2026-02-14 12:00 |
07:03:55.03 |
+47:40:09.2 |
HIP 34168 |
13.97 |
| 2026-02-15 00:00 |
07:03:48.47 |
+47:39:45.9 |
HIP 34168 |
15.13 |
| 2026-02-15 12:00 |
07:03:41.97 |
+47:39:22.4 |
HIP 34019 |
15.54 |
| 2026-02-16 00:00 |
07:03:35.51 |
+47:38:58.6 |
HIP 34019 |
15.85 |
| 2026-02-16 12:00 |
07:03:29.10 |
+47:38:34.6 |
HIP 34019 |
16.25 |
| 2026-02-17 00:00 |
07:03:22.75 |
+47:38:10.3 |
HIP 34019 |
16.72 |
| 2026-02-17 12:00 |
07:03:16.44 |
+47:37:45.8 |
HIP 34019 |
17.25 |
| 2026-02-18 00:00 |
07:03:10.18 |
+47:37:21.0 |
HIP 34019 |
17.84 |
| 2026-02-18 12:00 |
07:03:03.98 |
+47:36:55.9 |
HIP 34019 |
18.49 |
| 2026-02-19 00:00 |
07:02:57.83 |
+47:36:30.7 |
HIP 34019 |
19.18 |
| 2026-02-19 12:00 |
07:02:51.73 |
+47:36:05.1 |
HIP 34019 |
19.91 |
| 2026-02-20 00:00 |
07:02:45.68 |
+47:35:39.3 |
HIP 34019 |
20.67 |
| 2026-02-20 12:00 |
07:02:39.68 |
+47:35:13.3 |
HIP 34019 |
21.46 |
| 2026-02-21 00:00 |
07:02:33.74 |
+47:34:47.1 |
HIP 34019 |
22.28 |
| 2026-02-21 12:00 |
07:02:27.86 |
+47:34:20.6 |
HIP 34046 |
22.97 |
| 2026-02-22 00:00 |
07:02:22.02 |
+47:33:53.8 |
HIP 34046 |
23.20 |
| 2026-02-22 12:00 |
07:02:16.25 |
+47:33:26.9 |
HIP 34046 |
23.47 |
| 2026-02-23 00:00 |
07:02:10.52 |
+47:32:59.7 |
HIP 34046 |
23.77 |
| 2026-02-23 12:00 |
07:02:04.85 |
+47:32:32.3 |
HIP 34046 |
24.11 |
| 2026-02-24 00:00 |
07:01:59.24 |
+47:32:04.6 |
HIP 34046 |
24.48 |