メタデータ
| 項目 |
値 |
| Designation |
C/2010 E3 (WISE) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-04-05T12:06:39.401280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
33 |
| NEO |
- |
| M1 |
13.400 |
| K1 |
14.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-03-07.0000000 |
| e |
0.99221691 |
| q (au) |
2.269055 |
| a (au) |
291.536458 |
| i (deg) |
96.357814 |
| Ω (om, deg) |
117.272465 |
| ω (w, deg) |
50.432753 |
| M (ma, deg) |
359.994158 |
等級
散乱 + 全体線形
$$
M_a = (13.034 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.034 |
| n |
6.000 |
| gf |
0.903 |
| gb |
-0.835 |
| k |
0.998 |
| δ90 |
4.136 |
| 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 |
20:05:46.69 |
-42:28:22.4 |
HIP 98972 |
13.02 |
| 2026-07-29 12:00 |
20:05:42.03 |
-42:28:33.5 |
HIP 98972 |
13.12 |
| 2026-07-30 00:00 |
20:05:37.37 |
-42:28:44.3 |
HIP 98972 |
13.28 |
| 2026-07-30 12:00 |
20:05:32.72 |
-42:28:55.0 |
HIP 98972 |
13.48 |
| 2026-07-31 00:00 |
20:05:28.08 |
-42:29:05.5 |
HIP 98972 |
13.74 |
| 2026-07-31 12:00 |
20:05:23.44 |
-42:29:15.8 |
HIP 98972 |
14.04 |
| 2026-08-01 00:00 |
20:05:18.80 |
-42:29:25.9 |
HIP 98972 |
14.39 |
| 2026-08-01 12:00 |
20:05:14.18 |
-42:29:35.7 |
HIP 98972 |
14.78 |
| 2026-08-02 00:00 |
20:05:09.56 |
-42:29:45.4 |
HIP 98972 |
15.20 |
| 2026-08-02 12:00 |
20:05:04.95 |
-42:29:54.9 |
HIP 98972 |
15.66 |
| 2026-08-03 00:00 |
20:05:00.35 |
-42:30:04.2 |
HIP 98972 |
16.14 |
| 2026-08-03 12:00 |
20:04:55.75 |
-42:30:13.3 |
HIP 98972 |
16.66 |
| 2026-08-04 00:00 |
20:04:51.17 |
-42:30:22.2 |
HIP 98972 |
17.19 |
| 2026-08-04 12:00 |
20:04:46.59 |
-42:30:31.0 |
HIP 98972 |
17.75 |
| 2026-08-05 00:00 |
20:04:42.03 |
-42:30:39.5 |
HIP 98972 |
18.33 |
| 2026-08-05 12:00 |
20:04:37.47 |
-42:30:47.8 |
HIP 98972 |
18.93 |
| 2026-08-06 00:00 |
20:04:32.92 |
-42:30:55.9 |
HIP 98972 |
19.54 |
| 2026-08-06 12:00 |
20:04:28.39 |
-42:31:03.8 |
HIP 98972 |
20.16 |
| 2026-08-07 00:00 |
20:04:23.86 |
-42:31:11.5 |
HIP 98972 |
20.80 |
| 2026-08-07 12:00 |
20:04:19.35 |
-42:31:19.0 |
HIP 98972 |
21.44 |
| 2026-08-08 00:00 |
20:04:14.85 |
-42:31:26.3 |
HIP 98972 |
22.10 |
| 2026-08-08 12:00 |
20:04:10.36 |
-42:31:33.4 |
HIP 98972 |
22.76 |
| 2026-08-09 00:00 |
20:04:05.88 |
-42:31:40.3 |
HIP 98972 |
23.43 |
| 2026-08-09 12:00 |
20:04:01.41 |
-42:31:47.0 |
HIP 98972 |
24.11 |
| 2026-08-10 00:00 |
20:03:56.96 |
-42:31:53.5 |
HIP 98739 |
24.66 |
| 2026-08-10 12:00 |
20:03:52.52 |
-42:31:59.8 |
HIP 98739 |
24.32 |
| 2026-08-11 00:00 |
20:03:48.10 |
-42:32:05.9 |
HIP 98739 |
24.02 |
| 2026-08-11 12:00 |
20:03:43.69 |
-42:32:11.8 |
HIP 98739 |
23.74 |
| 2026-08-12 00:00 |
20:03:39.30 |
-42:32:17.5 |
HIP 98739 |
23.49 |
| 2026-08-12 12:00 |
20:03:34.92 |
-42:32:23.0 |
HIP 98739 |
23.27 |
| 2026-08-13 00:00 |
20:03:30.55 |
-42:32:28.3 |
HIP 98739 |
23.08 |
| 2026-08-13 12:00 |
20:03:26.20 |
-42:32:33.3 |
HIP 98739 |
22.92 |
| 2026-08-14 00:00 |
20:03:21.87 |
-42:32:38.2 |
HIP 98739 |
22.79 |
| 2026-08-14 12:00 |
20:03:17.56 |
-42:32:42.9 |
HIP 98739 |
22.70 |
| 2026-08-15 00:00 |
20:03:13.26 |
-42:32:47.4 |
HIP 98739 |
22.63 |
| 2026-08-15 12:00 |
20:03:08.98 |
-42:32:51.6 |
HIP 98739 |
22.60 |
| 2026-08-16 00:00 |
20:03:04.71 |
-42:32:55.7 |
HIP 98739 |
22.59 |
| 2026-08-16 12:00 |
20:03:00.47 |
-42:32:59.5 |
HIP 98739 |
22.62 |
| 2026-08-17 00:00 |
20:02:56.24 |
-42:33:03.2 |
HIP 98739 |
22.67 |
| 2026-08-17 12:00 |
20:02:52.03 |
-42:33:06.6 |
HIP 98739 |
22.75 |
| 2026-08-18 00:00 |
20:02:47.84 |
-42:33:09.9 |
HIP 98739 |
22.87 |
| 2026-08-18 12:00 |
20:02:43.67 |
-42:33:12.9 |
HIP 98739 |
23.01 |
| 2026-08-19 00:00 |
20:02:39.52 |
-42:33:15.8 |
HIP 98739 |
23.17 |