メタデータ
| 項目 |
値 |
| Designation |
C/2011 UF305 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-07-22T03:58:11.043840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:57Z |
| Obs used |
2274 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
15.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-09-24.0000000 |
| e |
1.00067410 |
| q (au) |
2.138212 |
| a (au) |
-3171.934164 |
| i (deg) |
93.960744 |
| Ω (om, deg) |
297.435869 |
| ω (w, deg) |
121.994483 |
| M (ma, deg) |
0.000352 |
等級
散乱 + 全体線形
$$
M_a = (4.016 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
4.016 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.501 |
| k |
1.000 |
| 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) |
| 2026-05-12 00:00 |
05:11:29.76 |
-63:45:46.6 |
HIP 24004 |
12.46 |
| 2026-05-12 12:00 |
05:11:37.05 |
-63:45:22.4 |
HIP 24004 |
13.29 |
| 2026-05-13 00:00 |
05:11:44.38 |
-63:44:58.6 |
HIP 24004 |
14.14 |
| 2026-05-13 12:00 |
05:11:51.74 |
-63:44:35.2 |
HIP 24004 |
15.00 |
| 2026-05-14 00:00 |
05:11:59.13 |
-63:44:12.3 |
HIP 24004 |
15.87 |
| 2026-05-14 12:00 |
05:12:06.54 |
-63:43:49.8 |
HIP 24004 |
16.74 |
| 2026-05-15 00:00 |
05:12:13.98 |
-63:43:27.7 |
HIP 24004 |
17.61 |
| 2026-05-15 12:00 |
05:12:21.46 |
-63:43:06.0 |
HIP 24423 |
17.31 |
| 2026-05-16 00:00 |
05:12:28.95 |
-63:42:44.7 |
HIP 24423 |
16.44 |
| 2026-05-16 12:00 |
05:12:36.48 |
-63:42:23.9 |
HIP 24423 |
15.57 |
| 2026-05-17 00:00 |
05:12:44.03 |
-63:42:03.5 |
HIP 24423 |
14.71 |
| 2026-05-17 12:00 |
05:12:51.61 |
-63:41:43.5 |
HIP 24423 |
13.86 |
| 2026-05-18 00:00 |
05:12:59.21 |
-63:41:24.0 |
HIP 24423 |
13.02 |
| 2026-05-18 12:00 |
05:13:06.83 |
-63:41:04.8 |
HIP 24423 |
12.19 |
| 2026-05-19 00:00 |
05:13:14.48 |
-63:40:46.2 |
HIP 24423 |
11.37 |
| 2026-05-19 12:00 |
05:13:22.16 |
-63:40:27.9 |
HIP 24423 |
10.57 |
| 2026-05-20 00:00 |
05:13:29.85 |
-63:40:10.1 |
HIP 24423 |
9.80 |
| 2026-05-20 12:00 |
05:13:37.57 |
-63:39:52.7 |
HIP 24423 |
9.05 |
| 2026-05-21 00:00 |
05:13:45.31 |
-63:39:35.8 |
HIP 24423 |
8.34 |
| 2026-05-21 12:00 |
05:13:53.07 |
-63:39:19.3 |
HIP 24423 |
7.68 |
| 2026-05-22 00:00 |
05:14:00.85 |
-63:39:03.2 |
HIP 24423 |
7.08 |
| 2026-05-22 12:00 |
05:14:08.65 |
-63:38:47.6 |
HIP 24423 |
6.55 |
| 2026-05-23 00:00 |
05:14:16.48 |
-63:38:32.4 |
HIP 24423 |
6.12 |
| 2026-05-23 12:00 |
05:14:24.32 |
-63:38:17.7 |
HIP 24423 |
5.81 |
| 2026-05-24 00:00 |
05:14:32.17 |
-63:38:03.4 |
HIP 24423 |
5.63 |
| 2026-05-24 12:00 |
05:14:40.05 |
-63:37:49.5 |
HIP 24423 |
5.61 |
| 2026-05-25 00:00 |
05:14:47.95 |
-63:37:36.1 |
HIP 24423 |
5.74 |
| 2026-05-25 12:00 |
05:14:55.86 |
-63:37:23.1 |
HIP 24423 |
6.01 |
| 2026-05-26 00:00 |
05:15:03.78 |
-63:37:10.6 |
HIP 24423 |
6.40 |
| 2026-05-26 12:00 |
05:15:11.73 |
-63:36:58.5 |
HIP 24423 |
6.90 |
| 2026-05-27 00:00 |
05:15:19.69 |
-63:36:46.8 |
HIP 24423 |
7.49 |
| 2026-05-27 12:00 |
05:15:27.66 |
-63:36:35.6 |
HIP 24423 |
8.13 |
| 2026-05-28 00:00 |
05:15:35.65 |
-63:36:24.8 |
HIP 24423 |
8.83 |
| 2026-05-28 12:00 |
05:15:43.66 |
-63:36:14.5 |
HIP 24423 |
9.57 |
| 2026-05-29 00:00 |
05:15:51.67 |
-63:36:04.7 |
HIP 24423 |
10.34 |
| 2026-05-29 12:00 |
05:15:59.70 |
-63:35:55.2 |
HIP 24423 |
11.13 |
| 2026-05-30 00:00 |
05:16:07.75 |
-63:35:46.3 |
HIP 24423 |
11.94 |
| 2026-05-30 12:00 |
05:16:15.80 |
-63:35:37.7 |
HIP 24423 |
12.77 |
| 2026-05-31 00:00 |
05:16:23.87 |
-63:35:29.6 |
HIP 24423 |
13.61 |
| 2026-05-31 12:00 |
05:16:31.95 |
-63:35:22.0 |
HIP 24423 |
14.47 |
| 2026-06-01 00:00 |
05:16:40.04 |
-63:35:14.8 |
HIP 24423 |
15.33 |
| 2026-06-01 12:00 |
05:16:48.14 |
-63:35:08.1 |
HIP 24536 |
15.94 |
| 2026-06-02 00:00 |
05:16:56.25 |
-63:35:01.8 |
HIP 24536 |
16.23 |