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 |
0.888 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
4.185 |
| 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) |
| 2026-03-26 00:00 |
22:48:57.76 |
+30:15:15.4 |
HIP 112548 |
17.60 |
| 2026-03-26 12:00 |
22:49:24.55 |
+30:20:39.3 |
HIP 112573 |
24.47 |
| 2026-03-27 00:00 |
22:49:51.32 |
+30:26:04.4 |
HIP 112573 |
26.11 |
| 2026-03-27 12:00 |
22:50:18.09 |
+30:31:30.7 |
HIP 112573 |
29.82 |
| 2026-03-28 00:00 |
22:50:44.85 |
+30:36:58.1 |
HIP 112573 |
34.95 |
| 2026-03-28 12:00 |
22:51:11.60 |
+30:42:26.8 |
HIP 113025 |
28.82 |
| 2026-03-29 00:00 |
22:51:38.33 |
+30:47:56.7 |
HIP 113025 |
22.88 |
| 2026-03-29 12:00 |
22:52:05.06 |
+30:53:27.7 |
HIP 113025 |
18.54 |
| 2026-03-30 00:00 |
22:52:31.77 |
+30:59:00.0 |
HIP 113025 |
17.08 |
| 2026-03-30 12:00 |
22:52:58.47 |
+31:04:33.4 |
HIP 113025 |
19.18 |
| 2026-03-31 00:00 |
22:53:25.15 |
+31:10:08.0 |
HIP 113149 |
18.58 |
| 2026-03-31 12:00 |
22:53:51.83 |
+31:15:43.9 |
HIP 113149 |
16.98 |
| 2026-04-01 00:00 |
22:54:18.49 |
+31:21:20.8 |
HIP 113147 |
9.27 |
| 2026-04-01 12:00 |
22:54:45.13 |
+31:26:59.0 |
HIP 113147 |
1.74 |
| 2026-04-02 00:00 |
22:55:11.76 |
+31:32:38.4 |
HIP 113207 |
4.13 |
| 2026-04-02 12:00 |
22:55:38.37 |
+31:38:18.9 |
HIP 113207 |
5.30 |
| 2026-04-03 00:00 |
22:56:04.97 |
+31:44:00.6 |
HIP 113207 |
12.96 |
| 2026-04-03 12:00 |
22:56:31.55 |
+31:49:43.4 |
HIP 113207 |
20.92 |
| 2026-04-04 00:00 |
22:56:58.12 |
+31:55:27.5 |
HIP 113342 |
16.91 |
| 2026-04-04 12:00 |
22:57:24.67 |
+32:01:12.7 |
HIP 113342 |
10.92 |
| 2026-04-05 00:00 |
22:57:51.20 |
+32:06:59.1 |
HIP 113342 |
9.04 |
| 2026-04-05 12:00 |
22:58:17.71 |
+32:12:46.6 |
HIP 113342 |
13.18 |
| 2026-04-06 00:00 |
22:58:44.20 |
+32:18:35.3 |
HIP 113342 |
19.89 |
| 2026-04-06 12:00 |
22:59:10.67 |
+32:24:25.2 |
HIP 113633 |
21.58 |
| 2026-04-07 00:00 |
22:59:37.12 |
+32:30:16.2 |
HIP 113633 |
15.05 |
| 2026-04-07 12:00 |
23:00:03.56 |
+32:36:08.4 |
HIP 113633 |
10.91 |
| 2026-04-08 00:00 |
23:00:29.96 |
+32:42:01.7 |
HIP 113633 |
11.96 |
| 2026-04-08 12:00 |
23:00:56.35 |
+32:47:56.3 |
HIP 113687 |
13.53 |
| 2026-04-09 00:00 |
23:01:22.72 |
+32:53:51.9 |
HIP 113728 |
14.20 |
| 2026-04-09 12:00 |
23:01:49.06 |
+32:59:48.7 |
HIP 113728 |
18.28 |
| 2026-04-10 00:00 |
23:02:15.37 |
+33:05:46.7 |
HIP 113618 |
21.16 |
| 2026-04-10 12:00 |
23:02:41.67 |
+33:11:45.8 |
HIP 113618 |
25.15 |
| 2026-04-11 00:00 |
23:03:07.93 |
+33:17:46.0 |
HIP 113985 |
24.24 |
| 2026-04-11 12:00 |
23:03:34.17 |
+33:23:47.4 |
HIP 113985 |
18.15 |
| 2026-04-12 00:00 |
23:04:00.39 |
+33:29:49.9 |
HIP 113985 |
14.32 |
| 2026-04-12 12:00 |
23:04:26.57 |
+33:35:53.6 |
HIP 113985 |
14.64 |
| 2026-04-13 00:00 |
23:04:52.73 |
+33:41:58.4 |
HIP 113985 |
18.91 |
| 2026-04-13 12:00 |
23:05:18.86 |
+33:48:04.3 |
HIP 113991 |
17.48 |
| 2026-04-14 00:00 |
23:05:44.96 |
+33:54:11.4 |
HIP 113991 |
13.82 |
| 2026-04-14 12:00 |
23:06:11.02 |
+34:00:19.6 |
HIP 113991 |
14.46 |
| 2026-04-15 00:00 |
23:06:37.06 |
+34:06:28.9 |
HIP 113991 |
18.98 |
| 2026-04-15 12:00 |
23:07:03.06 |
+34:12:39.3 |
HIP 114275 |
20.33 |
| 2026-04-16 00:00 |
23:07:29.04 |
+34:18:50.9 |
HIP 114275 |
15.54 |