メタデータ
| 項目 |
値 |
| Designation |
C/2010 J4 (WISE) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-05-03T04:07:06.352320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:44Z |
| Obs used |
43 |
| NEO |
- |
| M1 |
19.600 |
| 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) |
2010-05-17.0000000 |
| e |
0.99999359 |
| q (au) |
1.085533 |
| a (au) |
169416.296058 |
| i (deg) |
162.296527 |
| Ω (om, deg) |
316.405387 |
| ω (w, deg) |
83.753342 |
| M (ma, deg) |
0.000000 |
等級
散乱 + 全体線形
$$
M_a = (19.561 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
19.561 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-1.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
05:04:17.06 |
+06:51:12.0 |
HIP 23542 |
14.97 |
| 2026-09-20 12:00 |
05:04:16.27 |
+06:50:57.0 |
HIP 23542 |
14.66 |
| 2026-09-21 00:00 |
05:04:15.46 |
+06:50:41.9 |
HIP 23542 |
14.34 |
| 2026-09-21 12:00 |
05:04:14.61 |
+06:50:26.7 |
HIP 23542 |
14.01 |
| 2026-09-22 00:00 |
05:04:13.74 |
+06:50:11.6 |
HIP 23542 |
13.69 |
| 2026-09-22 12:00 |
05:04:12.84 |
+06:49:56.4 |
HIP 23542 |
13.35 |
| 2026-09-23 00:00 |
05:04:11.90 |
+06:49:41.2 |
HIP 23542 |
13.02 |
| 2026-09-23 12:00 |
05:04:10.94 |
+06:49:26.0 |
HIP 23542 |
12.68 |
| 2026-09-24 00:00 |
05:04:09.96 |
+06:49:10.8 |
HIP 23542 |
12.34 |
| 2026-09-24 12:00 |
05:04:08.94 |
+06:48:55.6 |
HIP 23542 |
11.99 |
| 2026-09-25 00:00 |
05:04:07.89 |
+06:48:40.3 |
HIP 23542 |
11.65 |
| 2026-09-25 12:00 |
05:04:06.82 |
+06:48:25.1 |
HIP 23542 |
11.30 |
| 2026-09-26 00:00 |
05:04:05.72 |
+06:48:09.8 |
HIP 23542 |
10.94 |
| 2026-09-26 12:00 |
05:04:04.59 |
+06:47:54.5 |
HIP 23542 |
10.59 |
| 2026-09-27 00:00 |
05:04:03.43 |
+06:47:39.2 |
HIP 23542 |
10.24 |
| 2026-09-27 12:00 |
05:04:02.24 |
+06:47:23.9 |
HIP 23542 |
9.88 |
| 2026-09-28 00:00 |
05:04:01.03 |
+06:47:08.6 |
HIP 23542 |
9.52 |
| 2026-09-28 12:00 |
05:03:59.79 |
+06:46:53.2 |
HIP 23542 |
9.17 |
| 2026-09-29 00:00 |
05:03:58.52 |
+06:46:37.9 |
HIP 23542 |
8.81 |
| 2026-09-29 12:00 |
05:03:57.22 |
+06:46:22.6 |
HIP 23542 |
8.46 |
| 2026-09-30 00:00 |
05:03:55.89 |
+06:46:07.2 |
HIP 23542 |
8.11 |
| 2026-09-30 12:00 |
05:03:54.54 |
+06:45:51.9 |
HIP 23542 |
7.76 |
| 2026-10-01 00:00 |
05:03:53.15 |
+06:45:36.5 |
HIP 23542 |
7.42 |
| 2026-10-01 12:00 |
05:03:51.74 |
+06:45:21.1 |
HIP 23542 |
7.09 |
| 2026-10-02 00:00 |
05:03:50.31 |
+06:45:05.8 |
HIP 23542 |
6.77 |
| 2026-10-02 12:00 |
05:03:48.84 |
+06:44:50.4 |
HIP 23542 |
6.47 |
| 2026-10-03 00:00 |
05:03:47.35 |
+06:44:35.1 |
HIP 23542 |
6.18 |
| 2026-10-03 12:00 |
05:03:45.83 |
+06:44:19.7 |
HIP 23542 |
5.90 |
| 2026-10-04 00:00 |
05:03:44.28 |
+06:44:04.4 |
HIP 23542 |
5.66 |
| 2026-10-04 12:00 |
05:03:42.70 |
+06:43:49.0 |
HIP 23542 |
5.44 |
| 2026-10-05 00:00 |
05:03:41.10 |
+06:43:33.7 |
HIP 23542 |
5.26 |
| 2026-10-05 12:00 |
05:03:39.47 |
+06:43:18.4 |
HIP 23542 |
5.11 |
| 2026-10-06 00:00 |
05:03:37.81 |
+06:43:03.0 |
HIP 23542 |
5.01 |
| 2026-10-06 12:00 |
05:03:36.13 |
+06:42:47.7 |
HIP 23542 |
4.96 |
| 2026-10-07 00:00 |
05:03:34.42 |
+06:42:32.4 |
HIP 23542 |
4.97 |
| 2026-10-07 12:00 |
05:03:32.68 |
+06:42:17.1 |
HIP 23542 |
5.02 |
| 2026-10-08 00:00 |
05:03:30.91 |
+06:42:01.8 |
HIP 23542 |
5.13 |
| 2026-10-08 12:00 |
05:03:29.12 |
+06:41:46.6 |
HIP 23542 |
5.29 |
| 2026-10-09 00:00 |
05:03:27.30 |
+06:41:31.3 |
HIP 23542 |
5.50 |
| 2026-10-09 12:00 |
05:03:25.45 |
+06:41:16.1 |
HIP 23542 |
5.75 |
| 2026-10-10 00:00 |
05:03:23.58 |
+06:41:00.9 |
HIP 23542 |
6.05 |
| 2026-10-10 12:00 |
05:03:21.68 |
+06:40:45.7 |
HIP 23542 |
6.38 |
| 2026-10-11 00:00 |
05:03:19.76 |
+06:40:30.5 |
HIP 23542 |
6.75 |