C/2005 Q1 (LINEAR)
メタデータ
| 項目 |
値 |
| Designation |
C/2005 Q1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-08-25T12:09:34.352640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:52Z |
| Obs used |
156 |
| NEO |
- |
| M1 |
11.300 |
| 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) |
2006-01-21.0000000 |
| e |
1.00432420 |
| q (au) |
6.408393 |
| a (au) |
-1481.983927 |
| i (deg) |
105.191606 |
| Ω (om, deg) |
87.731669 |
| ω (w, deg) |
44.690926 |
| M (ma, deg) |
0.002565 |
等級
散乱 + 全体線形
$$
M_a = (15.743 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.743 |
| n |
2.000 |
| gf |
0.944 |
| gb |
-0.911 |
| k |
0.800 |
| δ90 |
9.909 |
| 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 |
18:00:08.45 |
-18:53:17.1 |
HIP 88174 |
19.17 |
| 2026-02-03 12:00 |
18:00:10.81 |
-18:53:18.9 |
HIP 88174 |
19.06 |
| 2026-02-04 00:00 |
18:00:13.15 |
-18:53:20.7 |
HIP 88174 |
18.98 |
| 2026-02-04 12:00 |
18:00:15.46 |
-18:53:22.5 |
HIP 88174 |
18.91 |
| 2026-02-05 00:00 |
18:00:17.76 |
-18:53:24.2 |
HIP 88174 |
18.85 |
| 2026-02-05 12:00 |
18:00:20.03 |
-18:53:25.9 |
HIP 88174 |
18.81 |
| 2026-02-06 00:00 |
18:00:22.28 |
-18:53:27.6 |
HIP 88174 |
18.79 |
| 2026-02-06 12:00 |
18:00:24.52 |
-18:53:29.3 |
HIP 88174 |
18.78 |
| 2026-02-07 00:00 |
18:00:26.73 |
-18:53:30.9 |
HIP 88174 |
18.79 |
| 2026-02-07 12:00 |
18:00:28.92 |
-18:53:32.6 |
HIP 88174 |
18.81 |
| 2026-02-08 00:00 |
18:00:31.09 |
-18:53:34.2 |
HIP 88174 |
18.84 |
| 2026-02-08 12:00 |
18:00:33.24 |
-18:53:35.7 |
HIP 88174 |
18.89 |
| 2026-02-09 00:00 |
18:00:35.36 |
-18:53:37.3 |
HIP 88174 |
18.95 |
| 2026-02-09 12:00 |
18:00:37.47 |
-18:53:38.8 |
HIP 88174 |
19.02 |
| 2026-02-10 00:00 |
18:00:39.55 |
-18:53:40.3 |
HIP 88174 |
19.11 |
| 2026-02-10 12:00 |
18:00:41.61 |
-18:53:41.8 |
HIP 88174 |
19.20 |
| 2026-02-11 00:00 |
18:00:43.65 |
-18:53:43.2 |
HIP 88174 |
19.31 |
| 2026-02-11 12:00 |
18:00:45.66 |
-18:53:44.7 |
HIP 88174 |
19.42 |
| 2026-02-12 00:00 |
18:00:47.66 |
-18:53:46.1 |
HIP 88174 |
19.55 |
| 2026-02-12 12:00 |
18:00:49.63 |
-18:53:47.5 |
HIP 88297 |
19.43 |
| 2026-02-13 00:00 |
18:00:51.57 |
-18:53:48.9 |
HIP 88297 |
19.07 |
| 2026-02-13 12:00 |
18:00:53.49 |
-18:53:50.2 |
HIP 88297 |
18.71 |
| 2026-02-14 00:00 |
18:00:55.39 |
-18:53:51.6 |
HIP 88297 |
18.37 |
| 2026-02-14 12:00 |
18:00:57.27 |
-18:53:52.9 |
HIP 88297 |
18.03 |
| 2026-02-15 00:00 |
18:00:59.12 |
-18:53:54.2 |
HIP 88297 |
17.70 |
| 2026-02-15 12:00 |
18:01:00.95 |
-18:53:55.5 |
HIP 88297 |
17.38 |
| 2026-02-16 00:00 |
18:01:02.75 |
-18:53:56.7 |
HIP 88297 |
17.07 |
| 2026-02-16 12:00 |
18:01:04.53 |
-18:53:58.0 |
HIP 88297 |
16.77 |
| 2026-02-17 00:00 |
18:01:06.29 |
-18:53:59.2 |
HIP 88297 |
16.48 |
| 2026-02-17 12:00 |
18:01:08.02 |
-18:54:00.4 |
HIP 88297 |
16.19 |
| 2026-02-18 00:00 |
18:01:09.73 |
-18:54:01.6 |
HIP 88297 |
15.92 |
| 2026-02-18 12:00 |
18:01:11.41 |
-18:54:02.7 |
HIP 88297 |
15.66 |
| 2026-02-19 00:00 |
18:01:13.06 |
-18:54:03.9 |
HIP 88297 |
15.40 |
| 2026-02-19 12:00 |
18:01:14.69 |
-18:54:05.0 |
HIP 88297 |
15.16 |
| 2026-02-20 00:00 |
18:01:16.30 |
-18:54:06.1 |
HIP 88297 |
14.93 |
| 2026-02-20 12:00 |
18:01:17.88 |
-18:54:07.3 |
HIP 88297 |
14.70 |
| 2026-02-21 00:00 |
18:01:19.43 |
-18:54:08.3 |
HIP 88297 |
14.49 |
| 2026-02-21 12:00 |
18:01:20.96 |
-18:54:09.4 |
HIP 88297 |
14.28 |
| 2026-02-22 00:00 |
18:01:22.47 |
-18:54:10.5 |
HIP 88297 |
14.08 |
| 2026-02-22 12:00 |
18:01:23.94 |
-18:54:11.5 |
HIP 88297 |
13.90 |
| 2026-02-23 00:00 |
18:01:25.40 |
-18:54:12.5 |
HIP 88297 |
13.72 |
| 2026-02-23 12:00 |
18:01:26.82 |
-18:54:13.6 |
HIP 88297 |
13.55 |
| 2026-02-24 00:00 |
18:01:28.22 |
-18:54:14.6 |
HIP 88297 |
13.39 |