メタデータ
| 項目 |
値 |
| Designation |
C/2008 X3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-10-10T14:06:11.905920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:25Z |
| Obs used |
127 |
| NEO |
- |
| M1 |
11.700 |
| K1 |
16.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2009-01-07.0000000 |
| e |
0.95653616 |
| q (au) |
1.902117 |
| a (au) |
43.763220 |
| i (deg) |
66.474978 |
| Ω (om, deg) |
337.751045 |
| ω (w, deg) |
140.801601 |
| M (ma, deg) |
0.300991 |
等級
散乱 + 全体線形
$$
M_a = (11.351 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.351 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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 |
22:29:38.67 |
-68:30:13.0 |
HIP 110709 |
21.33 |
| 2026-03-26 12:00 |
22:29:46.71 |
-68:30:23.4 |
HIP 111057 |
21.83 |
| 2026-03-27 00:00 |
22:29:54.71 |
-68:30:34.1 |
HIP 111057 |
22.00 |
| 2026-03-27 12:00 |
22:30:02.68 |
-68:30:45.3 |
HIP 111057 |
22.20 |
| 2026-03-28 00:00 |
22:30:10.61 |
-68:30:56.8 |
HIP 111057 |
22.43 |
| 2026-03-28 12:00 |
22:30:18.50 |
-68:31:08.7 |
HIP 111057 |
22.70 |
| 2026-03-29 00:00 |
22:30:26.35 |
-68:31:20.9 |
HIP 111057 |
22.98 |
| 2026-03-29 12:00 |
22:30:34.17 |
-68:31:33.5 |
HIP 111057 |
23.30 |
| 2026-03-30 00:00 |
22:30:41.95 |
-68:31:46.4 |
HIP 111057 |
23.64 |
| 2026-03-30 12:00 |
22:30:49.69 |
-68:31:59.8 |
HIP 111057 |
24.00 |
| 2026-03-31 00:00 |
22:30:57.38 |
-68:32:13.5 |
HIP 111057 |
24.38 |
| 2026-03-31 12:00 |
22:31:05.04 |
-68:32:27.5 |
HIP 111057 |
24.79 |
| 2026-04-01 00:00 |
22:31:12.66 |
-68:32:41.9 |
HIP 111057 |
25.22 |
| 2026-04-01 12:00 |
22:31:20.24 |
-68:32:56.7 |
HIP 111057 |
25.66 |
| 2026-04-02 00:00 |
22:31:27.77 |
-68:33:11.8 |
HIP 111057 |
26.13 |
| 2026-04-02 12:00 |
22:31:35.27 |
-68:33:27.2 |
HIP 111057 |
26.61 |
| 2026-04-03 00:00 |
22:31:42.72 |
-68:33:43.1 |
HIP 111057 |
27.10 |
| 2026-04-03 12:00 |
22:31:50.13 |
-68:33:59.2 |
HIP 111057 |
27.61 |
| 2026-04-04 00:00 |
22:31:57.50 |
-68:34:15.8 |
HIP 111057 |
28.13 |
| 2026-04-04 12:00 |
22:32:04.82 |
-68:34:32.7 |
HIP 111057 |
28.67 |
| 2026-04-05 00:00 |
22:32:12.10 |
-68:34:49.9 |
HIP 111057 |
29.22 |
| 2026-04-05 12:00 |
22:32:19.34 |
-68:35:07.5 |
HIP 111057 |
29.78 |
| 2026-04-06 00:00 |
22:32:26.53 |
-68:35:25.4 |
HIP 111057 |
30.34 |
| 2026-04-06 12:00 |
22:32:33.67 |
-68:35:43.7 |
HIP 111230 |
30.82 |
| 2026-04-07 00:00 |
22:32:40.77 |
-68:36:02.3 |
HIP 111230 |
30.57 |
| 2026-04-07 12:00 |
22:32:47.82 |
-68:36:21.3 |
HIP 111230 |
30.32 |
| 2026-04-08 00:00 |
22:32:54.83 |
-68:36:40.6 |
HIP 111230 |
30.08 |
| 2026-04-08 12:00 |
22:33:01.79 |
-68:37:00.3 |
HIP 111230 |
29.85 |
| 2026-04-09 00:00 |
22:33:08.70 |
-68:37:20.3 |
HIP 111230 |
29.63 |
| 2026-04-09 12:00 |
22:33:15.57 |
-68:37:40.7 |
HIP 111230 |
29.41 |
| 2026-04-10 00:00 |
22:33:22.38 |
-68:38:01.4 |
HIP 111230 |
29.21 |
| 2026-04-10 12:00 |
22:33:29.15 |
-68:38:22.4 |
HIP 111230 |
29.01 |
| 2026-04-11 00:00 |
22:33:35.87 |
-68:38:43.8 |
HIP 111230 |
28.83 |
| 2026-04-11 12:00 |
22:33:42.54 |
-68:39:05.5 |
HIP 111230 |
28.65 |
| 2026-04-12 00:00 |
22:33:49.16 |
-68:39:27.5 |
HIP 111230 |
28.48 |
| 2026-04-12 12:00 |
22:33:55.72 |
-68:39:49.9 |
HIP 111230 |
28.32 |
| 2026-04-13 00:00 |
22:34:02.24 |
-68:40:12.6 |
HIP 111230 |
28.17 |
| 2026-04-13 12:00 |
22:34:08.70 |
-68:40:35.6 |
HIP 111230 |
28.03 |
| 2026-04-14 00:00 |
22:34:15.12 |
-68:40:59.0 |
HIP 111230 |
27.90 |
| 2026-04-14 12:00 |
22:34:21.48 |
-68:41:22.7 |
HIP 111230 |
27.78 |
| 2026-04-15 00:00 |
22:34:27.78 |
-68:41:46.7 |
HIP 111230 |
27.67 |
| 2026-04-15 12:00 |
22:34:34.04 |
-68:42:11.1 |
HIP 111230 |
27.57 |
| 2026-04-16 00:00 |
22:34:40.24 |
-68:42:35.8 |
HIP 111230 |
27.48 |