メタデータ
| 項目 |
値 |
| Designation |
C/2010 L5 (WISE) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-04-23T03:55:12.714240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:44Z |
| Obs used |
34 |
| NEO |
Yes |
| M1 |
18.900 |
| K1 |
4.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-07-02.0000000 |
| e |
0.90421394 |
| q (au) |
0.791169 |
| a (au) |
8.259755 |
| i (deg) |
147.048942 |
| Ω (om, deg) |
206.472272 |
| ω (w, deg) |
214.763588 |
| M (ma, deg) |
2.899591 |
等級
散乱 + 全体線形
$$
M_a = (17.711 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.711 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.597 |
| 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 |
11:41:49.17 |
+24:38:34.2 |
HIP 57008 |
12.63 |
| 2026-07-29 12:00 |
11:41:53.79 |
+24:37:40.2 |
HIP 57008 |
13.99 |
| 2026-07-30 00:00 |
11:41:58.46 |
+24:36:46.1 |
HIP 57008 |
15.36 |
| 2026-07-30 12:00 |
11:42:03.17 |
+24:35:52.1 |
HIP 57008 |
16.75 |
| 2026-07-31 00:00 |
11:42:07.92 |
+24:34:58.1 |
HIP 57008 |
18.14 |
| 2026-07-31 12:00 |
11:42:12.73 |
+24:34:04.1 |
HIP 57008 |
19.54 |
| 2026-08-01 00:00 |
11:42:17.57 |
+24:33:10.1 |
HIP 57008 |
20.95 |
| 2026-08-01 12:00 |
11:42:22.46 |
+24:32:16.1 |
HIP 57008 |
22.37 |
| 2026-08-02 00:00 |
11:42:27.40 |
+24:31:22.2 |
HIP 57008 |
23.80 |
| 2026-08-02 12:00 |
11:42:32.38 |
+24:30:28.2 |
HIP 57008 |
25.23 |
| 2026-08-03 00:00 |
11:42:37.40 |
+24:29:34.3 |
HIP 57008 |
26.68 |
| 2026-08-03 12:00 |
11:42:42.46 |
+24:28:40.4 |
HIP 57008 |
28.13 |
| 2026-08-04 00:00 |
11:42:47.57 |
+24:27:46.6 |
HIP 57008 |
29.59 |
| 2026-08-04 12:00 |
11:42:52.72 |
+24:26:52.7 |
HIP 57198 |
29.03 |
| 2026-08-05 00:00 |
11:42:57.91 |
+24:25:58.9 |
HIP 57198 |
27.73 |
| 2026-08-05 12:00 |
11:43:03.15 |
+24:25:05.2 |
HIP 57198 |
26.43 |
| 2026-08-06 00:00 |
11:43:08.42 |
+24:24:11.5 |
HIP 57198 |
25.16 |
| 2026-08-06 12:00 |
11:43:13.74 |
+24:23:17.8 |
HIP 57198 |
23.91 |
| 2026-08-07 00:00 |
11:43:19.10 |
+24:22:24.2 |
HIP 57198 |
22.70 |
| 2026-08-07 12:00 |
11:43:24.49 |
+24:21:30.6 |
HIP 57198 |
21.51 |
| 2026-08-08 00:00 |
11:43:29.93 |
+24:20:37.1 |
HIP 57198 |
20.38 |
| 2026-08-08 12:00 |
11:43:35.41 |
+24:19:43.7 |
HIP 57198 |
19.29 |
| 2026-08-09 00:00 |
11:43:40.92 |
+24:18:50.3 |
HIP 57198 |
18.27 |
| 2026-08-09 12:00 |
11:43:46.48 |
+24:17:57.0 |
HIP 57198 |
17.33 |
| 2026-08-10 00:00 |
11:43:52.07 |
+24:17:03.7 |
HIP 57198 |
16.48 |
| 2026-08-10 12:00 |
11:43:57.70 |
+24:16:10.6 |
HIP 57198 |
15.74 |
| 2026-08-11 00:00 |
11:44:03.37 |
+24:15:17.5 |
HIP 57198 |
15.14 |
| 2026-08-11 12:00 |
11:44:09.08 |
+24:14:24.5 |
HIP 57198 |
14.67 |
| 2026-08-12 00:00 |
11:44:14.82 |
+24:13:31.6 |
HIP 57198 |
14.38 |
| 2026-08-12 12:00 |
11:44:20.60 |
+24:12:38.8 |
HIP 57198 |
14.25 |
| 2026-08-13 00:00 |
11:44:26.42 |
+24:11:46.0 |
HIP 57198 |
14.31 |
| 2026-08-13 12:00 |
11:44:32.27 |
+24:10:53.4 |
HIP 57198 |
14.56 |
| 2026-08-14 00:00 |
11:44:38.16 |
+24:10:00.9 |
HIP 57198 |
14.97 |
| 2026-08-14 12:00 |
11:44:44.08 |
+24:09:08.4 |
HIP 57198 |
15.55 |
| 2026-08-15 00:00 |
11:44:50.03 |
+24:08:16.1 |
HIP 57198 |
16.28 |
| 2026-08-15 12:00 |
11:44:56.02 |
+24:07:23.9 |
HIP 57198 |
17.14 |
| 2026-08-16 00:00 |
11:45:02.04 |
+24:06:31.9 |
HIP 57198 |
18.11 |
| 2026-08-16 12:00 |
11:45:08.09 |
+24:05:39.9 |
HIP 57198 |
19.18 |
| 2026-08-17 00:00 |
11:45:14.18 |
+24:04:48.1 |
HIP 57198 |
20.33 |
| 2026-08-17 12:00 |
11:45:20.30 |
+24:03:56.4 |
HIP 57198 |
21.55 |
| 2026-08-18 00:00 |
11:45:26.45 |
+24:03:04.8 |
HIP 57198 |
22.83 |
| 2026-08-18 12:00 |
11:45:32.63 |
+24:02:13.3 |
HIP 57198 |
24.16 |
| 2026-08-19 00:00 |
11:45:38.84 |
+24:01:22.0 |
HIP 57198 |
25.54 |