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
$$
M_a = (9.126 + 3.952\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.126 |
| n |
3.952 |
| gf |
0.956 |
| gb |
-0.998 |
| 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) |
| 2026-07-29 00:00 |
06:54:03.53 |
+42:48:07.5 |
HIP 33218 |
11.79 |
| 2026-07-29 12:00 |
06:54:08.00 |
+42:48:07.3 |
HIP 33218 |
11.26 |
| 2026-07-30 00:00 |
06:54:12.45 |
+42:48:07.3 |
HIP 33218 |
10.77 |
| 2026-07-30 12:00 |
06:54:16.88 |
+42:48:07.5 |
HIP 33218 |
10.31 |
| 2026-07-31 00:00 |
06:54:21.29 |
+42:48:07.8 |
HIP 33218 |
9.90 |
| 2026-07-31 12:00 |
06:54:25.69 |
+42:48:08.3 |
HIP 33218 |
9.54 |
| 2026-08-01 00:00 |
06:54:30.06 |
+42:48:08.9 |
HIP 33218 |
9.24 |
| 2026-08-01 12:00 |
06:54:34.42 |
+42:48:09.8 |
HIP 33218 |
8.99 |
| 2026-08-02 00:00 |
06:54:38.75 |
+42:48:10.7 |
HIP 33218 |
8.81 |
| 2026-08-02 12:00 |
06:54:43.07 |
+42:48:11.9 |
HIP 33218 |
8.70 |
| 2026-08-03 00:00 |
06:54:47.36 |
+42:48:13.2 |
HIP 33218 |
8.65 |
| 2026-08-03 12:00 |
06:54:51.64 |
+42:48:14.7 |
HIP 33218 |
8.67 |
| 2026-08-04 00:00 |
06:54:55.89 |
+42:48:16.4 |
HIP 33218 |
8.76 |
| 2026-08-04 12:00 |
06:55:00.12 |
+42:48:18.2 |
HIP 33218 |
8.91 |
| 2026-08-05 00:00 |
06:55:04.33 |
+42:48:20.2 |
HIP 33218 |
9.13 |
| 2026-08-05 12:00 |
06:55:08.52 |
+42:48:22.3 |
HIP 33218 |
9.39 |
| 2026-08-06 00:00 |
06:55:12.69 |
+42:48:24.6 |
HIP 33218 |
9.71 |
| 2026-08-06 12:00 |
06:55:16.83 |
+42:48:27.1 |
HIP 33218 |
10.07 |
| 2026-08-07 00:00 |
06:55:20.95 |
+42:48:29.8 |
HIP 33218 |
10.47 |
| 2026-08-07 12:00 |
06:55:25.05 |
+42:48:32.6 |
HIP 33218 |
10.90 |
| 2026-08-08 00:00 |
06:55:29.13 |
+42:48:35.6 |
HIP 33218 |
11.36 |
| 2026-08-08 12:00 |
06:55:33.18 |
+42:48:38.7 |
HIP 33218 |
11.84 |
| 2026-08-09 00:00 |
06:55:37.20 |
+42:48:42.0 |
HIP 33218 |
12.34 |
| 2026-08-09 12:00 |
06:55:41.20 |
+42:48:45.5 |
HIP 33218 |
12.87 |
| 2026-08-10 00:00 |
06:55:45.18 |
+42:48:49.1 |
HIP 33218 |
13.40 |
| 2026-08-10 12:00 |
06:55:49.13 |
+42:48:52.9 |
HIP 33218 |
13.95 |
| 2026-08-11 00:00 |
06:55:53.05 |
+42:48:56.9 |
HIP 33218 |
14.51 |
| 2026-08-11 12:00 |
06:55:56.95 |
+42:49:01.0 |
HIP 33218 |
15.08 |
| 2026-08-12 00:00 |
06:56:00.83 |
+42:49:05.3 |
HIP 33218 |
15.65 |
| 2026-08-12 12:00 |
06:56:04.67 |
+42:49:09.8 |
HIP 33218 |
16.23 |
| 2026-08-13 00:00 |
06:56:08.49 |
+42:49:14.4 |
HIP 33218 |
16.81 |
| 2026-08-13 12:00 |
06:56:12.28 |
+42:49:19.2 |
HIP 33218 |
17.40 |
| 2026-08-14 00:00 |
06:56:16.05 |
+42:49:24.1 |
HIP 33218 |
17.99 |
| 2026-08-14 12:00 |
06:56:19.79 |
+42:49:29.2 |
HIP 33218 |
18.58 |
| 2026-08-15 00:00 |
06:56:23.49 |
+42:49:34.5 |
HIP 33218 |
19.17 |
| 2026-08-15 12:00 |
06:56:27.17 |
+42:49:39.9 |
HIP 33218 |
19.76 |
| 2026-08-16 00:00 |
06:56:30.82 |
+42:49:45.5 |
HIP 33218 |
20.36 |
| 2026-08-16 12:00 |
06:56:34.45 |
+42:49:51.3 |
HIP 33218 |
20.95 |
| 2026-08-17 00:00 |
06:56:38.04 |
+42:49:57.2 |
HIP 33218 |
21.53 |
| 2026-08-17 12:00 |
06:56:41.60 |
+42:50:03.2 |
HIP 33218 |
22.12 |
| 2026-08-18 00:00 |
06:56:45.13 |
+42:50:09.5 |
HIP 33218 |
22.71 |
| 2026-08-18 12:00 |
06:56:48.64 |
+42:50:15.9 |
HIP 33218 |
23.29 |
| 2026-08-19 00:00 |
06:56:52.11 |
+42:50:22.4 |
HIP 33218 |
23.87 |