C/2010 FB87 (WISE-Garradd)
メタデータ
| 項目 |
値 |
| Designation |
C/2010 FB87 (WISE-Garradd) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-11-07T09:21:42.255360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
613 |
| NEO |
- |
| M1 |
11.100 |
| 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) |
2011-05-28.0000000 |
| e |
0.99050085 |
| q (au) |
2.842763 |
| a (au) |
299.264939 |
| i (deg) |
107.625358 |
| Ω (om, deg) |
89.902192 |
| ω (w, deg) |
265.025840 |
| M (ma, deg) |
0.038382 |
等級
散乱 + 全体線形
$$
M_a = (10.840 + 3.477\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.840 |
| n |
3.477 |
| gf |
1.000 |
| gb |
-0.812 |
| 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) |
| 2026-02-03 00:00 |
03:00:07.82 |
+68:14:22.7 |
HIP 13743 |
18.20 |
| 2026-02-03 12:00 |
03:00:06.58 |
+68:13:39.7 |
HIP 13743 |
17.96 |
| 2026-02-04 00:00 |
03:00:05.44 |
+68:12:56.9 |
HIP 13743 |
17.75 |
| 2026-02-04 12:00 |
03:00:04.38 |
+68:12:14.1 |
HIP 13743 |
17.58 |
| 2026-02-05 00:00 |
03:00:03.41 |
+68:11:31.4 |
HIP 13743 |
17.45 |
| 2026-02-05 12:00 |
03:00:02.52 |
+68:10:48.8 |
HIP 13743 |
17.35 |
| 2026-02-06 00:00 |
03:00:01.73 |
+68:10:06.2 |
HIP 13743 |
17.29 |
| 2026-02-06 12:00 |
03:00:01.02 |
+68:09:23.8 |
HIP 13743 |
17.27 |
| 2026-02-07 00:00 |
03:00:00.39 |
+68:08:41.5 |
HIP 13743 |
17.28 |
| 2026-02-07 12:00 |
02:59:59.86 |
+68:07:59.4 |
HIP 13743 |
17.33 |
| 2026-02-08 00:00 |
02:59:59.41 |
+68:07:17.3 |
HIP 13743 |
17.42 |
| 2026-02-08 12:00 |
02:59:59.05 |
+68:06:35.3 |
HIP 13743 |
17.54 |
| 2026-02-09 00:00 |
02:59:58.78 |
+68:05:53.5 |
HIP 13743 |
17.69 |
| 2026-02-09 12:00 |
02:59:58.59 |
+68:05:11.8 |
HIP 13743 |
17.88 |
| 2026-02-10 00:00 |
02:59:58.48 |
+68:04:30.2 |
HIP 13743 |
18.10 |
| 2026-02-10 12:00 |
02:59:58.47 |
+68:03:48.7 |
HIP 13743 |
18.35 |
| 2026-02-11 00:00 |
02:59:58.54 |
+68:03:07.4 |
HIP 13743 |
18.63 |
| 2026-02-11 12:00 |
02:59:58.69 |
+68:02:26.2 |
HIP 13743 |
18.93 |
| 2026-02-12 00:00 |
02:59:58.93 |
+68:01:45.2 |
HIP 13743 |
19.26 |
| 2026-02-12 12:00 |
02:59:59.25 |
+68:01:04.3 |
HIP 13743 |
19.62 |
| 2026-02-13 00:00 |
02:59:59.66 |
+68:00:23.5 |
HIP 13743 |
20.00 |
| 2026-02-13 12:00 |
03:00:00.16 |
+67:59:42.9 |
HIP 13743 |
20.40 |
| 2026-02-14 00:00 |
03:00:00.74 |
+67:59:02.5 |
HIP 13743 |
20.81 |
| 2026-02-14 12:00 |
03:00:01.40 |
+67:58:22.2 |
HIP 13743 |
21.25 |
| 2026-02-15 00:00 |
03:00:02.14 |
+67:57:42.0 |
HIP 13743 |
21.70 |
| 2026-02-15 12:00 |
03:00:02.97 |
+67:57:02.1 |
HIP 13743 |
22.17 |
| 2026-02-16 00:00 |
03:00:03.89 |
+67:56:22.3 |
HIP 13743 |
22.66 |
| 2026-02-16 12:00 |
03:00:04.88 |
+67:55:42.6 |
HIP 13743 |
23.15 |
| 2026-02-17 00:00 |
03:00:05.96 |
+67:55:03.2 |
HIP 13743 |
23.66 |
| 2026-02-17 12:00 |
03:00:07.12 |
+67:54:23.9 |
HIP 13743 |
24.18 |
| 2026-02-18 00:00 |
03:00:08.36 |
+67:53:44.8 |
HIP 13743 |
24.71 |
| 2026-02-18 12:00 |
03:00:09.68 |
+67:53:05.9 |
HIP 13743 |
25.25 |
| 2026-02-19 00:00 |
03:00:11.09 |
+67:52:27.1 |
HIP 13743 |
25.80 |
| 2026-02-19 12:00 |
03:00:12.57 |
+67:51:48.6 |
HIP 13743 |
26.36 |
| 2026-02-20 00:00 |
03:00:14.14 |
+67:51:10.2 |
HIP 13743 |
26.93 |
| 2026-02-20 12:00 |
03:00:15.79 |
+67:50:32.1 |
HIP 13743 |
27.50 |
| 2026-02-21 00:00 |
03:00:17.51 |
+67:49:54.1 |
HIP 13743 |
28.08 |
| 2026-02-21 12:00 |
03:00:19.32 |
+67:49:16.4 |
HIP 13743 |
28.66 |
| 2026-02-22 00:00 |
03:00:21.20 |
+67:48:38.8 |
HIP 13743 |
29.25 |
| 2026-02-22 12:00 |
03:00:23.16 |
+67:48:01.5 |
HIP 13743 |
29.84 |
| 2026-02-23 00:00 |
03:00:25.20 |
+67:47:24.3 |
HIP 13743 |
30.44 |
| 2026-02-23 12:00 |
03:00:27.32 |
+67:46:47.4 |
HIP 13743 |
31.04 |
| 2026-02-24 00:00 |
03:00:29.52 |
+67:46:10.7 |
HIP 13743 |
31.65 |