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) |
| 2026-07-29 00:00 |
05:03:03.77 |
+07:12:26.8 |
HIP 23457 |
15.27 |
| 2026-07-29 12:00 |
05:03:05.77 |
+07:12:19.2 |
HIP 23457 |
15.64 |
| 2026-07-30 00:00 |
05:03:07.74 |
+07:12:11.5 |
HIP 23457 |
16.01 |
| 2026-07-30 12:00 |
05:03:09.69 |
+07:12:03.7 |
HIP 23457 |
16.40 |
| 2026-07-31 00:00 |
05:03:11.62 |
+07:11:55.8 |
HIP 23457 |
16.78 |
| 2026-07-31 12:00 |
05:03:13.53 |
+07:11:47.8 |
HIP 23457 |
17.17 |
| 2026-08-01 00:00 |
05:03:15.42 |
+07:11:39.7 |
HIP 23457 |
17.57 |
| 2026-08-01 12:00 |
05:03:17.28 |
+07:11:31.5 |
HIP 23457 |
17.96 |
| 2026-08-02 00:00 |
05:03:19.13 |
+07:11:23.1 |
HIP 23457 |
18.36 |
| 2026-08-02 12:00 |
05:03:20.95 |
+07:11:14.7 |
HIP 23457 |
18.76 |
| 2026-08-03 00:00 |
05:03:22.76 |
+07:11:06.2 |
HIP 23457 |
19.16 |
| 2026-08-03 12:00 |
05:03:24.54 |
+07:10:57.6 |
HIP 23457 |
19.57 |
| 2026-08-04 00:00 |
05:03:26.30 |
+07:10:48.8 |
HIP 23457 |
19.97 |
| 2026-08-04 12:00 |
05:03:28.03 |
+07:10:40.0 |
HIP 23457 |
20.37 |
| 2026-08-05 00:00 |
05:03:29.75 |
+07:10:31.1 |
HIP 23457 |
20.77 |
| 2026-08-05 12:00 |
05:03:31.44 |
+07:10:22.1 |
HIP 23457 |
21.17 |
| 2026-08-06 00:00 |
05:03:33.11 |
+07:10:13.0 |
HIP 23457 |
21.57 |
| 2026-08-06 12:00 |
05:03:34.76 |
+07:10:03.7 |
HIP 23457 |
21.97 |
| 2026-08-07 00:00 |
05:03:36.38 |
+07:09:54.4 |
HIP 23457 |
22.37 |
| 2026-08-07 12:00 |
05:03:37.98 |
+07:09:45.0 |
HIP 23457 |
22.76 |
| 2026-08-08 00:00 |
05:03:39.56 |
+07:09:35.5 |
HIP 23457 |
23.16 |
| 2026-08-08 12:00 |
05:03:41.11 |
+07:09:25.9 |
HIP 23457 |
23.55 |
| 2026-08-09 00:00 |
05:03:42.65 |
+07:09:16.2 |
HIP 23457 |
23.94 |
| 2026-08-09 12:00 |
05:03:44.15 |
+07:09:06.4 |
HIP 23457 |
24.32 |
| 2026-08-10 00:00 |
05:03:45.64 |
+07:08:56.5 |
HIP 23457 |
24.71 |
| 2026-08-10 12:00 |
05:03:47.10 |
+07:08:46.5 |
HIP 23457 |
25.09 |
| 2026-08-11 00:00 |
05:03:48.53 |
+07:08:36.4 |
HIP 23457 |
25.47 |
| 2026-08-11 12:00 |
05:03:49.94 |
+07:08:26.2 |
HIP 23457 |
25.84 |
| 2026-08-12 00:00 |
05:03:51.33 |
+07:08:15.9 |
HIP 23457 |
26.21 |
| 2026-08-12 12:00 |
05:03:52.69 |
+07:08:05.5 |
HIP 23457 |
26.58 |
| 2026-08-13 00:00 |
05:03:54.03 |
+07:07:55.1 |
HIP 23457 |
26.95 |
| 2026-08-13 12:00 |
05:03:55.34 |
+07:07:44.5 |
HIP 23457 |
27.31 |
| 2026-08-14 00:00 |
05:03:56.63 |
+07:07:33.9 |
HIP 23457 |
27.67 |
| 2026-08-14 12:00 |
05:03:57.89 |
+07:07:23.2 |
HIP 23457 |
28.02 |
| 2026-08-15 00:00 |
05:03:59.13 |
+07:07:12.4 |
HIP 23457 |
28.37 |
| 2026-08-15 12:00 |
05:04:00.34 |
+07:07:01.5 |
HIP 23457 |
28.72 |
| 2026-08-16 00:00 |
05:04:01.53 |
+07:06:50.5 |
HIP 23542 |
28.69 |
| 2026-08-16 12:00 |
05:04:02.69 |
+07:06:39.4 |
HIP 23542 |
28.55 |
| 2026-08-17 00:00 |
05:04:03.83 |
+07:06:28.2 |
HIP 23542 |
28.41 |
| 2026-08-17 12:00 |
05:04:04.94 |
+07:06:17.0 |
HIP 23542 |
28.27 |
| 2026-08-18 00:00 |
05:04:06.03 |
+07:06:05.7 |
HIP 23542 |
28.13 |
| 2026-08-18 12:00 |
05:04:07.09 |
+07:05:54.2 |
HIP 23542 |
27.99 |
| 2026-08-19 00:00 |
05:04:08.12 |
+07:05:42.8 |
HIP 23542 |
27.85 |