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) |
| 2026-03-26 00:00 |
18:02:01.20 |
-18:55:01.0 |
HIP 88297 |
11.55 |
| 2026-03-26 12:00 |
18:02:00.87 |
-18:55:01.7 |
HIP 88297 |
11.52 |
| 2026-03-27 00:00 |
18:02:00.50 |
-18:55:02.5 |
HIP 88297 |
11.49 |
| 2026-03-27 12:00 |
18:02:00.11 |
-18:55:03.2 |
HIP 88297 |
11.46 |
| 2026-03-28 00:00 |
18:01:59.69 |
-18:55:04.0 |
HIP 88297 |
11.44 |
| 2026-03-28 12:00 |
18:01:59.23 |
-18:55:04.7 |
HIP 88297 |
11.41 |
| 2026-03-29 00:00 |
18:01:58.75 |
-18:55:05.5 |
HIP 88297 |
11.38 |
| 2026-03-29 12:00 |
18:01:58.24 |
-18:55:06.2 |
HIP 88297 |
11.35 |
| 2026-03-30 00:00 |
18:01:57.70 |
-18:55:07.0 |
HIP 88297 |
11.32 |
| 2026-03-30 12:00 |
18:01:57.13 |
-18:55:07.8 |
HIP 88297 |
11.30 |
| 2026-03-31 00:00 |
18:01:56.53 |
-18:55:08.6 |
HIP 88297 |
11.27 |
| 2026-03-31 12:00 |
18:01:55.91 |
-18:55:09.4 |
HIP 88297 |
11.24 |
| 2026-04-01 00:00 |
18:01:55.25 |
-18:55:10.2 |
HIP 88297 |
11.22 |
| 2026-04-01 12:00 |
18:01:54.57 |
-18:55:11.0 |
HIP 88297 |
11.20 |
| 2026-04-02 00:00 |
18:01:53.85 |
-18:55:11.8 |
HIP 88297 |
11.18 |
| 2026-04-02 12:00 |
18:01:53.11 |
-18:55:12.6 |
HIP 88297 |
11.16 |
| 2026-04-03 00:00 |
18:01:52.34 |
-18:55:13.5 |
HIP 88297 |
11.14 |
| 2026-04-03 12:00 |
18:01:51.54 |
-18:55:14.3 |
HIP 88297 |
11.13 |
| 2026-04-04 00:00 |
18:01:50.71 |
-18:55:15.1 |
HIP 88297 |
11.12 |
| 2026-04-04 12:00 |
18:01:49.85 |
-18:55:16.0 |
HIP 88297 |
11.12 |
| 2026-04-05 00:00 |
18:01:48.96 |
-18:55:16.9 |
HIP 88297 |
11.12 |
| 2026-04-05 12:00 |
18:01:48.05 |
-18:55:17.7 |
HIP 88297 |
11.12 |
| 2026-04-06 00:00 |
18:01:47.11 |
-18:55:18.6 |
HIP 88297 |
11.13 |
| 2026-04-06 12:00 |
18:01:46.13 |
-18:55:19.5 |
HIP 88297 |
11.14 |
| 2026-04-07 00:00 |
18:01:45.13 |
-18:55:20.4 |
HIP 88297 |
11.16 |
| 2026-04-07 12:00 |
18:01:44.10 |
-18:55:21.3 |
HIP 88297 |
11.18 |
| 2026-04-08 00:00 |
18:01:43.05 |
-18:55:22.2 |
HIP 88297 |
11.21 |
| 2026-04-08 12:00 |
18:01:41.96 |
-18:55:23.2 |
HIP 88297 |
11.25 |
| 2026-04-09 00:00 |
18:01:40.85 |
-18:55:24.1 |
HIP 88297 |
11.29 |
| 2026-04-09 12:00 |
18:01:39.71 |
-18:55:25.1 |
HIP 88297 |
11.35 |
| 2026-04-10 00:00 |
18:01:38.54 |
-18:55:26.0 |
HIP 88297 |
11.41 |
| 2026-04-10 12:00 |
18:01:37.34 |
-18:55:27.0 |
HIP 88297 |
11.47 |
| 2026-04-11 00:00 |
18:01:36.11 |
-18:55:28.0 |
HIP 88297 |
11.55 |
| 2026-04-11 12:00 |
18:01:34.86 |
-18:55:29.0 |
HIP 88297 |
11.64 |
| 2026-04-12 00:00 |
18:01:33.58 |
-18:55:30.0 |
HIP 88297 |
11.73 |
| 2026-04-12 12:00 |
18:01:32.27 |
-18:55:31.1 |
HIP 88297 |
11.84 |
| 2026-04-13 00:00 |
18:01:30.93 |
-18:55:32.1 |
HIP 88297 |
11.95 |
| 2026-04-13 12:00 |
18:01:29.56 |
-18:55:33.1 |
HIP 88297 |
12.08 |
| 2026-04-14 00:00 |
18:01:28.17 |
-18:55:34.2 |
HIP 88297 |
12.21 |
| 2026-04-14 12:00 |
18:01:26.75 |
-18:55:35.3 |
HIP 88297 |
12.35 |
| 2026-04-15 00:00 |
18:01:25.30 |
-18:55:36.4 |
HIP 88297 |
12.51 |
| 2026-04-15 12:00 |
18:01:23.83 |
-18:55:37.5 |
HIP 88297 |
12.67 |
| 2026-04-16 00:00 |
18:01:22.33 |
-18:55:38.6 |
HIP 88297 |
12.85 |