メタデータ
| 項目 |
値 |
| Designation |
C/2013 J5 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-11-30T00:52:09.624000Z |
| Orbit solution date (soln_date, UTC) |
2022-07-06T03:12:22Z |
| Obs used |
74 |
| NEO |
- |
| M1 |
10.000 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2013-05-04.0000000 |
| e |
1.00247225 |
| q (au) |
4.905909 |
| a (au) |
-1984.387923 |
| i (deg) |
136.025000 |
| Ω (om, deg) |
256.785024 |
| ω (w, deg) |
19.174987 |
| M (ma, deg) |
0.001728 |
等級
散乱 + 全体線形
$$
M_a = (9.118 + 3.956\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.118 |
| n |
3.956 |
| gf |
0.991 |
| gb |
-0.797 |
| k |
1.000 |
| δ90 |
9.999 |
| 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) |
| 2026-05-12 00:00 |
06:42:19.60 |
+43:20:43.8 |
HIP 32267 |
27.43 |
| 2026-05-12 12:00 |
06:42:22.80 |
+43:20:20.8 |
HIP 32267 |
26.74 |
| 2026-05-13 00:00 |
06:42:26.04 |
+43:19:57.8 |
HIP 32267 |
26.05 |
| 2026-05-13 12:00 |
06:42:29.31 |
+43:19:34.9 |
HIP 32267 |
25.35 |
| 2026-05-14 00:00 |
06:42:32.62 |
+43:19:12.1 |
HIP 32267 |
24.65 |
| 2026-05-14 12:00 |
06:42:35.95 |
+43:18:49.5 |
HIP 32267 |
23.95 |
| 2026-05-15 00:00 |
06:42:39.32 |
+43:18:26.9 |
HIP 32267 |
23.24 |
| 2026-05-15 12:00 |
06:42:42.73 |
+43:18:04.5 |
HIP 32267 |
22.53 |
| 2026-05-16 00:00 |
06:42:46.16 |
+43:17:42.1 |
HIP 32267 |
21.82 |
| 2026-05-16 12:00 |
06:42:49.63 |
+43:17:19.9 |
HIP 32267 |
21.11 |
| 2026-05-17 00:00 |
06:42:53.13 |
+43:16:57.8 |
HIP 32267 |
20.40 |
| 2026-05-17 12:00 |
06:42:56.65 |
+43:16:35.7 |
HIP 32267 |
19.69 |
| 2026-05-18 00:00 |
06:43:00.21 |
+43:16:13.8 |
HIP 32267 |
18.97 |
| 2026-05-18 12:00 |
06:43:03.80 |
+43:15:52.0 |
HIP 32267 |
18.26 |
| 2026-05-19 00:00 |
06:43:07.42 |
+43:15:30.4 |
HIP 32267 |
17.54 |
| 2026-05-19 12:00 |
06:43:11.07 |
+43:15:08.8 |
HIP 32267 |
16.83 |
| 2026-05-20 00:00 |
06:43:14.75 |
+43:14:47.3 |
HIP 32267 |
16.12 |
| 2026-05-20 12:00 |
06:43:18.46 |
+43:14:26.0 |
HIP 32267 |
15.41 |
| 2026-05-21 00:00 |
06:43:22.19 |
+43:14:04.8 |
HIP 32267 |
14.71 |
| 2026-05-21 12:00 |
06:43:25.95 |
+43:13:43.7 |
HIP 32267 |
14.01 |
| 2026-05-22 00:00 |
06:43:29.75 |
+43:13:22.7 |
HIP 32267 |
13.31 |
| 2026-05-22 12:00 |
06:43:33.57 |
+43:13:01.8 |
HIP 32267 |
12.63 |
| 2026-05-23 00:00 |
06:43:37.41 |
+43:12:41.1 |
HIP 32267 |
11.96 |
| 2026-05-23 12:00 |
06:43:41.28 |
+43:12:20.5 |
HIP 32267 |
11.29 |
| 2026-05-24 00:00 |
06:43:45.18 |
+43:12:00.0 |
HIP 32267 |
10.65 |
| 2026-05-24 12:00 |
06:43:49.11 |
+43:11:39.6 |
HIP 32267 |
10.02 |
| 2026-05-25 00:00 |
06:43:53.06 |
+43:11:19.3 |
HIP 32267 |
9.43 |
| 2026-05-25 12:00 |
06:43:57.04 |
+43:10:59.2 |
HIP 32267 |
8.86 |
| 2026-05-26 00:00 |
06:44:01.04 |
+43:10:39.2 |
HIP 32267 |
8.33 |
| 2026-05-26 12:00 |
06:44:05.07 |
+43:10:19.3 |
HIP 32267 |
7.85 |
| 2026-05-27 00:00 |
06:44:09.12 |
+43:09:59.6 |
HIP 32267 |
7.43 |
| 2026-05-27 12:00 |
06:44:13.19 |
+43:09:39.9 |
HIP 32267 |
7.07 |
| 2026-05-28 00:00 |
06:44:17.29 |
+43:09:20.4 |
HIP 32267 |
6.80 |
| 2026-05-28 12:00 |
06:44:21.42 |
+43:09:01.0 |
HIP 32267 |
6.63 |
| 2026-05-29 00:00 |
06:44:25.56 |
+43:08:41.8 |
HIP 32267 |
6.55 |
| 2026-05-29 12:00 |
06:44:29.73 |
+43:08:22.7 |
HIP 32267 |
6.58 |
| 2026-05-30 00:00 |
06:44:33.92 |
+43:08:03.7 |
HIP 32267 |
6.72 |
| 2026-05-30 12:00 |
06:44:38.14 |
+43:07:44.8 |
HIP 32267 |
6.96 |
| 2026-05-31 00:00 |
06:44:42.37 |
+43:07:26.1 |
HIP 32267 |
7.29 |
| 2026-05-31 12:00 |
06:44:46.63 |
+43:07:07.5 |
HIP 32267 |
7.70 |
| 2026-06-01 00:00 |
06:44:50.91 |
+43:06:49.0 |
HIP 32267 |
8.18 |
| 2026-06-01 12:00 |
06:44:55.21 |
+43:06:30.7 |
HIP 32267 |
8.72 |
| 2026-06-02 00:00 |
06:44:59.53 |
+43:06:12.5 |
HIP 32267 |
9.31 |