メタデータ
| 項目 |
値 |
| Designation |
P/2010 D2 (WISE) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-03-05T03:52:32.606400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:40Z |
| Obs used |
66 |
| NEO |
- |
| M1 |
14.400 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-09-01.0000000 |
| e |
0.45302440 |
| q (au) |
3.659054 |
| a (au) |
6.689610 |
| i (deg) |
57.176974 |
| Ω (om, deg) |
319.835860 |
| ω (w, deg) |
120.068180 |
| M (ma, deg) |
10.244377 |
等級
散乱 + 全体線形
$$
M_a = (13.079 + 2.282\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.079 |
| n |
2.282 |
| gf |
0.887 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
4.192 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
22:43:18.70 |
+69:14:43.9 |
HIP 112446 |
21.49 |
| 2026-09-20 12:00 |
22:42:15.10 |
+69:16:04.9 |
HIP 112446 |
25.74 |
| 2026-09-21 00:00 |
22:41:11.51 |
+69:17:20.8 |
HIP 111670 |
21.14 |
| 2026-09-21 12:00 |
22:40:07.95 |
+69:18:31.8 |
HIP 111670 |
16.11 |
| 2026-09-22 00:00 |
22:39:04.43 |
+69:19:37.7 |
HIP 111670 |
11.72 |
| 2026-09-22 12:00 |
22:38:00.97 |
+69:20:38.7 |
HIP 111670 |
8.93 |
| 2026-09-23 00:00 |
22:36:57.60 |
+69:21:34.6 |
HIP 111670 |
9.26 |
| 2026-09-23 12:00 |
22:35:54.33 |
+69:22:25.6 |
HIP 111670 |
12.43 |
| 2026-09-24 00:00 |
22:34:51.17 |
+69:23:11.6 |
HIP 111670 |
16.88 |
| 2026-09-24 12:00 |
22:33:48.15 |
+69:23:52.7 |
HIP 111146 |
18.65 |
| 2026-09-25 00:00 |
22:32:45.29 |
+69:24:28.9 |
HIP 111146 |
15.29 |
| 2026-09-25 12:00 |
22:31:42.60 |
+69:25:00.2 |
HIP 111146 |
13.42 |
| 2026-09-26 00:00 |
22:30:40.10 |
+69:25:26.6 |
HIP 111146 |
13.64 |
| 2026-09-26 12:00 |
22:29:37.81 |
+69:25:48.2 |
HIP 111146 |
15.84 |
| 2026-09-27 00:00 |
22:28:35.75 |
+69:26:05.0 |
HIP 111146 |
19.33 |
| 2026-09-27 12:00 |
22:27:33.93 |
+69:26:16.9 |
HIP 111146 |
23.53 |
| 2026-09-28 00:00 |
22:26:32.38 |
+69:26:24.1 |
HIP 110749 |
23.85 |
| 2026-09-28 12:00 |
22:25:31.11 |
+69:26:26.6 |
HIP 110749 |
24.11 |
| 2026-09-29 00:00 |
22:24:30.13 |
+69:26:24.3 |
HIP 110307 |
21.44 |
| 2026-09-29 12:00 |
22:23:29.47 |
+69:26:17.4 |
HIP 110307 |
16.24 |
| 2026-09-30 00:00 |
22:22:29.13 |
+69:26:05.8 |
HIP 110307 |
11.16 |
| 2026-09-30 12:00 |
22:21:29.15 |
+69:25:49.6 |
HIP 110307 |
6.44 |
| 2026-10-01 00:00 |
22:20:29.53 |
+69:25:28.8 |
HIP 110307 |
3.69 |
| 2026-10-01 12:00 |
22:19:30.30 |
+69:25:03.5 |
HIP 110307 |
6.34 |
| 2026-10-02 00:00 |
22:18:31.46 |
+69:24:33.7 |
HIP 110307 |
10.97 |
| 2026-10-02 12:00 |
22:17:33.04 |
+69:23:59.4 |
HIP 110307 |
15.91 |
| 2026-10-03 00:00 |
22:16:35.04 |
+69:23:20.7 |
HIP 110307 |
20.93 |
| 2026-10-03 12:00 |
22:15:37.49 |
+69:22:37.5 |
HIP 110307 |
25.96 |
| 2026-10-04 00:00 |
22:14:40.41 |
+69:21:50.1 |
HIP 109661 |
24.72 |
| 2026-10-04 12:00 |
22:13:43.80 |
+69:20:58.3 |
HIP 109661 |
22.42 |
| 2026-10-05 00:00 |
22:12:47.68 |
+69:20:02.3 |
HIP 109661 |
21.05 |
| 2026-10-05 12:00 |
22:11:52.07 |
+69:19:02.0 |
HIP 109661 |
20.78 |
| 2026-10-06 00:00 |
22:10:56.98 |
+69:17:57.6 |
HIP 109661 |
21.63 |
| 2026-10-06 12:00 |
22:10:02.42 |
+69:16:49.1 |
HIP 109235 |
20.30 |
| 2026-10-07 00:00 |
22:09:08.41 |
+69:15:36.5 |
HIP 109235 |
19.02 |
| 2026-10-07 12:00 |
22:08:14.97 |
+69:14:19.9 |
HIP 109235 |
19.04 |
| 2026-10-08 00:00 |
22:07:22.10 |
+69:12:59.4 |
HIP 109235 |
20.32 |
| 2026-10-08 12:00 |
22:06:29.81 |
+69:11:35.0 |
HIP 109235 |
22.63 |
| 2026-10-09 00:00 |
22:05:38.13 |
+69:10:06.7 |
HIP 109235 |
25.69 |
| 2026-10-09 12:00 |
22:04:47.06 |
+69:08:34.6 |
HIP 108648 |
22.29 |
| 2026-10-10 00:00 |
22:03:56.61 |
+69:06:58.8 |
HIP 108648 |
17.69 |
| 2026-10-10 12:00 |
22:03:06.79 |
+69:05:19.3 |
HIP 108648 |
13.26 |
| 2026-10-11 00:00 |
22:02:17.62 |
+69:03:36.2 |
HIP 108648 |
9.21 |