メタデータ
| 項目 |
値 |
| Designation |
C/2006 X1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-03-05T17:06:21.522240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:03Z |
| Obs used |
95 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2006-12-21.0000000 |
| e |
1.00000000 |
| q (au) |
6.126054 |
| a (au) |
- |
| i (deg) |
42.617795 |
| Ω (om, deg) |
255.242287 |
| ω (w, deg) |
101.283664 |
| M (ma, deg) |
- |
等級
散乱 + 全体線形
$$
M_a = (10.097 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.097 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-03-26 00:00 |
07:33:47.64 |
-11:44:32.2 |
HIP 36722 |
11.86 |
| 2026-03-26 12:00 |
07:33:46.91 |
-11:44:07.4 |
HIP 36722 |
11.46 |
| 2026-03-27 00:00 |
07:33:46.21 |
-11:43:42.6 |
HIP 36722 |
11.06 |
| 2026-03-27 12:00 |
07:33:45.54 |
-11:43:17.8 |
HIP 36722 |
10.68 |
| 2026-03-28 00:00 |
07:33:44.89 |
-11:42:53.1 |
HIP 36722 |
10.30 |
| 2026-03-28 12:00 |
07:33:44.28 |
-11:42:28.3 |
HIP 36722 |
9.93 |
| 2026-03-29 00:00 |
07:33:43.69 |
-11:42:03.6 |
HIP 36722 |
9.58 |
| 2026-03-29 12:00 |
07:33:43.13 |
-11:41:38.8 |
HIP 36722 |
9.24 |
| 2026-03-30 00:00 |
07:33:42.60 |
-11:41:14.1 |
HIP 36722 |
8.91 |
| 2026-03-30 12:00 |
07:33:42.09 |
-11:40:49.4 |
HIP 36722 |
8.60 |
| 2026-03-31 00:00 |
07:33:41.62 |
-11:40:24.7 |
HIP 36722 |
8.31 |
| 2026-03-31 12:00 |
07:33:41.17 |
-11:40:00.0 |
HIP 36722 |
8.03 |
| 2026-04-01 00:00 |
07:33:40.75 |
-11:39:35.4 |
HIP 36722 |
7.78 |
| 2026-04-01 12:00 |
07:33:40.36 |
-11:39:10.8 |
HIP 36722 |
7.55 |
| 2026-04-02 00:00 |
07:33:39.99 |
-11:38:46.2 |
HIP 36722 |
7.34 |
| 2026-04-02 12:00 |
07:33:39.66 |
-11:38:21.6 |
HIP 36722 |
7.15 |
| 2026-04-03 00:00 |
07:33:39.35 |
-11:37:57.0 |
HIP 36722 |
6.99 |
| 2026-04-03 12:00 |
07:33:39.07 |
-11:37:32.5 |
HIP 36722 |
6.86 |
| 2026-04-04 00:00 |
07:33:38.82 |
-11:37:08.1 |
HIP 36722 |
6.77 |
| 2026-04-04 12:00 |
07:33:38.59 |
-11:36:43.6 |
HIP 36722 |
6.70 |
| 2026-04-05 00:00 |
07:33:38.40 |
-11:36:19.2 |
HIP 36722 |
6.66 |
| 2026-04-05 12:00 |
07:33:38.23 |
-11:35:54.8 |
HIP 36722 |
6.65 |
| 2026-04-06 00:00 |
07:33:38.09 |
-11:35:30.5 |
HIP 36722 |
6.68 |
| 2026-04-06 12:00 |
07:33:37.98 |
-11:35:06.2 |
HIP 36722 |
6.74 |
| 2026-04-07 00:00 |
07:33:37.89 |
-11:34:42.0 |
HIP 36722 |
6.83 |
| 2026-04-07 12:00 |
07:33:37.84 |
-11:34:17.8 |
HIP 36722 |
6.94 |
| 2026-04-08 00:00 |
07:33:37.81 |
-11:33:53.6 |
HIP 36722 |
7.09 |
| 2026-04-08 12:00 |
07:33:37.81 |
-11:33:29.5 |
HIP 36722 |
7.26 |
| 2026-04-09 00:00 |
07:33:37.84 |
-11:33:05.5 |
HIP 36722 |
7.45 |
| 2026-04-09 12:00 |
07:33:37.89 |
-11:32:41.5 |
HIP 36722 |
7.66 |
| 2026-04-10 00:00 |
07:33:37.98 |
-11:32:17.6 |
HIP 36722 |
7.89 |
| 2026-04-10 12:00 |
07:33:38.09 |
-11:31:53.7 |
HIP 36722 |
8.15 |
| 2026-04-11 00:00 |
07:33:38.23 |
-11:31:29.9 |
HIP 36722 |
8.41 |
| 2026-04-11 12:00 |
07:33:38.40 |
-11:31:06.1 |
HIP 36722 |
8.70 |
| 2026-04-12 00:00 |
07:33:38.60 |
-11:30:42.4 |
HIP 36722 |
8.99 |
| 2026-04-12 12:00 |
07:33:38.82 |
-11:30:18.8 |
HIP 36722 |
9.30 |
| 2026-04-13 00:00 |
07:33:39.08 |
-11:29:55.3 |
HIP 36722 |
9.62 |
| 2026-04-13 12:00 |
07:33:39.36 |
-11:29:31.8 |
HIP 36722 |
9.94 |
| 2026-04-14 00:00 |
07:33:39.67 |
-11:29:08.4 |
HIP 36722 |
10.28 |
| 2026-04-14 12:00 |
07:33:40.00 |
-11:28:45.0 |
HIP 36722 |
10.62 |
| 2026-04-15 00:00 |
07:33:40.37 |
-11:28:21.8 |
HIP 36722 |
10.97 |
| 2026-04-15 12:00 |
07:33:40.76 |
-11:27:58.6 |
HIP 36722 |
11.33 |
| 2026-04-16 00:00 |
07:33:41.18 |
-11:27:35.5 |
HIP 36722 |
11.70 |