メタデータ
| 項目 |
値 |
| Designation |
C/2010 L4 (WISE) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-02-23T15:43:33.841920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:44Z |
| Obs used |
98 |
| NEO |
- |
| M1 |
12.900 |
| K1 |
7.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-07-08.0000000 |
| e |
0.96471201 |
| q (au) |
2.825536 |
| a (au) |
80.070752 |
| i (deg) |
102.818083 |
| Ω (om, deg) |
125.540169 |
| ω (w, deg) |
95.768618 |
| M (ma, deg) |
0.184805 |
等級
散乱 + 全体線形
$$
M_a = (8.939 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.939 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| k |
1.000 |
| 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 |
21:29:50.25 |
-85:07:59.8 |
HIP 105628 |
12.09 |
| 2026-07-29 12:00 |
21:29:10.93 |
-85:08:21.6 |
HIP 105628 |
11.29 |
| 2026-07-30 00:00 |
21:28:31.43 |
-85:08:42.9 |
HIP 105628 |
10.52 |
| 2026-07-30 12:00 |
21:27:51.76 |
-85:09:03.5 |
HIP 105628 |
9.77 |
| 2026-07-31 00:00 |
21:27:11.93 |
-85:09:23.6 |
HIP 105628 |
9.05 |
| 2026-07-31 12:00 |
21:26:31.96 |
-85:09:43.1 |
HIP 105628 |
8.38 |
| 2026-08-01 00:00 |
21:25:51.83 |
-85:10:02.1 |
HIP 105628 |
7.76 |
| 2026-08-01 12:00 |
21:25:11.56 |
-85:10:20.5 |
HIP 105628 |
7.21 |
| 2026-08-02 00:00 |
21:24:31.15 |
-85:10:38.3 |
HIP 105628 |
6.74 |
| 2026-08-02 12:00 |
21:23:50.62 |
-85:10:55.5 |
HIP 105628 |
6.38 |
| 2026-08-03 00:00 |
21:23:09.96 |
-85:11:12.2 |
HIP 105628 |
6.13 |
| 2026-08-03 12:00 |
21:22:29.18 |
-85:11:28.2 |
HIP 105145 |
5.67 |
| 2026-08-04 00:00 |
21:21:48.30 |
-85:11:43.7 |
HIP 105145 |
4.79 |
| 2026-08-04 12:00 |
21:21:07.30 |
-85:11:58.6 |
HIP 105145 |
3.92 |
| 2026-08-05 00:00 |
21:20:26.21 |
-85:12:12.9 |
HIP 105145 |
3.06 |
| 2026-08-05 12:00 |
21:19:45.03 |
-85:12:26.7 |
HIP 105145 |
2.23 |
| 2026-08-06 00:00 |
21:19:03.76 |
-85:12:39.8 |
HIP 105145 |
1.46 |
| 2026-08-06 12:00 |
21:18:22.42 |
-85:12:52.3 |
HIP 105145 |
0.93 |
| 2026-08-07 00:00 |
21:17:41.00 |
-85:13:04.3 |
HIP 105145 |
1.08 |
| 2026-08-07 12:00 |
21:16:59.52 |
-85:13:15.6 |
HIP 105145 |
1.74 |
| 2026-08-08 00:00 |
21:16:17.97 |
-85:13:26.4 |
HIP 105145 |
2.53 |
| 2026-08-08 12:00 |
21:15:36.38 |
-85:13:36.5 |
HIP 105145 |
3.37 |
| 2026-08-09 00:00 |
21:14:54.75 |
-85:13:46.1 |
HIP 105145 |
4.22 |
| 2026-08-09 12:00 |
21:14:13.08 |
-85:13:55.1 |
HIP 105145 |
5.08 |
| 2026-08-10 00:00 |
21:13:31.37 |
-85:14:03.4 |
HIP 105145 |
5.94 |
| 2026-08-10 12:00 |
21:12:49.65 |
-85:14:11.2 |
HIP 105145 |
6.81 |
| 2026-08-11 00:00 |
21:12:07.91 |
-85:14:18.3 |
HIP 105145 |
7.67 |
| 2026-08-11 12:00 |
21:11:26.17 |
-85:14:24.9 |
HIP 105145 |
8.53 |
| 2026-08-12 00:00 |
21:10:44.42 |
-85:14:30.8 |
HIP 105145 |
9.40 |
| 2026-08-12 12:00 |
21:10:02.68 |
-85:14:36.2 |
HIP 105145 |
10.26 |
| 2026-08-13 00:00 |
21:09:20.96 |
-85:14:41.0 |
HIP 105145 |
11.12 |
| 2026-08-13 12:00 |
21:08:39.26 |
-85:14:45.1 |
HIP 105145 |
11.98 |
| 2026-08-14 00:00 |
21:07:57.59 |
-85:14:48.7 |
HIP 105145 |
12.84 |
| 2026-08-14 12:00 |
21:07:15.95 |
-85:14:51.6 |
HIP 105145 |
13.69 |
| 2026-08-15 00:00 |
21:06:34.36 |
-85:14:54.0 |
HIP 105145 |
14.55 |
| 2026-08-15 12:00 |
21:05:52.82 |
-85:14:55.7 |
HIP 105145 |
15.40 |
| 2026-08-16 00:00 |
21:05:11.34 |
-85:14:56.9 |
HIP 105145 |
16.25 |
| 2026-08-16 12:00 |
21:04:29.92 |
-85:14:57.4 |
HIP 105145 |
17.10 |
| 2026-08-17 00:00 |
21:03:48.58 |
-85:14:57.4 |
HIP 105145 |
17.95 |
| 2026-08-17 12:00 |
21:03:07.32 |
-85:14:56.8 |
HIP 105145 |
18.80 |
| 2026-08-18 00:00 |
21:02:26.14 |
-85:14:55.6 |
HIP 105145 |
19.64 |
| 2026-08-18 12:00 |
21:01:45.06 |
-85:14:53.8 |
HIP 105145 |
20.48 |
| 2026-08-19 00:00 |
21:01:04.08 |
-85:14:51.4 |
HIP 102575 |
20.11 |