C/2004 X3 (LINEAR)
メタデータ
| 項目 |
値 |
| Designation |
C/2004 X3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-06-17T04:32:11.241600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:45Z |
| Obs used |
241 |
| NEO |
- |
| M1 |
6.800 |
| K1 |
13.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2005-02-19.0000000 |
| e |
1.00642712 |
| q (au) |
4.402298 |
| a (au) |
-684.956072 |
| i (deg) |
81.076589 |
| Ω (om, deg) |
343.047740 |
| ω (w, deg) |
202.126117 |
| M (ma, deg) |
-0.006498 |
等級
散乱 + 全体線形
$$
M_a = (12.305 + 3.877\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.305 |
| n |
3.877 |
| gf |
0.944 |
| gb |
-0.765 |
| k |
0.800 |
| δ90 |
9.207 |
| 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 |
23:12:14.29 |
-23:44:15.3 |
HIP 114568 |
6.09 |
| 2026-02-03 12:00 |
23:12:16.80 |
-23:43:49.9 |
HIP 114568 |
6.14 |
| 2026-02-04 00:00 |
23:12:19.31 |
-23:43:24.5 |
HIP 114568 |
6.26 |
| 2026-02-04 12:00 |
23:12:21.84 |
-23:42:59.1 |
HIP 114568 |
6.46 |
| 2026-02-05 00:00 |
23:12:24.38 |
-23:42:33.7 |
HIP 114568 |
6.73 |
| 2026-02-05 12:00 |
23:12:26.94 |
-23:42:08.4 |
HIP 114568 |
7.06 |
| 2026-02-06 00:00 |
23:12:29.51 |
-23:41:43.2 |
HIP 114568 |
7.45 |
| 2026-02-06 12:00 |
23:12:32.09 |
-23:41:17.9 |
HIP 114568 |
7.88 |
| 2026-02-07 00:00 |
23:12:34.68 |
-23:40:52.7 |
HIP 114568 |
8.36 |
| 2026-02-07 12:00 |
23:12:37.29 |
-23:40:27.6 |
HIP 114568 |
8.87 |
| 2026-02-08 00:00 |
23:12:39.90 |
-23:40:02.5 |
HIP 114568 |
9.40 |
| 2026-02-08 12:00 |
23:12:42.53 |
-23:39:37.4 |
HIP 114568 |
9.97 |
| 2026-02-09 00:00 |
23:12:45.18 |
-23:39:12.4 |
HIP 114568 |
10.55 |
| 2026-02-09 12:00 |
23:12:47.83 |
-23:38:47.5 |
HIP 114568 |
11.15 |
| 2026-02-10 00:00 |
23:12:50.49 |
-23:38:22.5 |
HIP 114568 |
11.77 |
| 2026-02-10 12:00 |
23:12:53.17 |
-23:37:57.7 |
HIP 114568 |
12.40 |
| 2026-02-11 00:00 |
23:12:55.85 |
-23:37:32.9 |
HIP 114568 |
13.04 |
| 2026-02-11 12:00 |
23:12:58.55 |
-23:37:08.1 |
HIP 114568 |
13.69 |
| 2026-02-12 00:00 |
23:13:01.25 |
-23:36:43.4 |
HIP 114568 |
14.35 |
| 2026-02-12 12:00 |
23:13:03.97 |
-23:36:18.7 |
HIP 114568 |
15.02 |
| 2026-02-13 00:00 |
23:13:06.70 |
-23:35:54.1 |
HIP 114568 |
15.70 |
| 2026-02-13 12:00 |
23:13:09.43 |
-23:35:29.6 |
HIP 114568 |
16.38 |
| 2026-02-14 00:00 |
23:13:12.18 |
-23:35:05.1 |
HIP 114568 |
17.07 |
| 2026-02-14 12:00 |
23:13:14.93 |
-23:34:40.7 |
HIP 114568 |
17.77 |
| 2026-02-15 00:00 |
23:13:17.70 |
-23:34:16.4 |
HIP 114568 |
18.47 |
| 2026-02-15 12:00 |
23:13:20.47 |
-23:33:52.1 |
HIP 114568 |
19.17 |
| 2026-02-16 00:00 |
23:13:23.25 |
-23:33:27.9 |
HIP 114568 |
19.88 |
| 2026-02-16 12:00 |
23:13:26.04 |
-23:33:03.7 |
HIP 114568 |
20.59 |
| 2026-02-17 00:00 |
23:13:28.84 |
-23:32:39.7 |
HIP 114568 |
21.31 |
| 2026-02-17 12:00 |
23:13:31.65 |
-23:32:15.7 |
HIP 114568 |
22.02 |
| 2026-02-18 00:00 |
23:13:34.46 |
-23:31:51.7 |
HIP 114568 |
22.74 |
| 2026-02-18 12:00 |
23:13:37.29 |
-23:31:27.9 |
HIP 114568 |
23.47 |
| 2026-02-19 00:00 |
23:13:40.12 |
-23:31:04.1 |
HIP 114568 |
24.19 |
| 2026-02-19 12:00 |
23:13:42.95 |
-23:30:40.4 |
HIP 114568 |
24.92 |
| 2026-02-20 00:00 |
23:13:45.80 |
-23:30:16.8 |
HIP 114568 |
25.65 |
| 2026-02-20 12:00 |
23:13:48.65 |
-23:29:53.2 |
HIP 114568 |
26.38 |
| 2026-02-21 00:00 |
23:13:51.50 |
-23:29:29.8 |
HIP 114568 |
27.12 |
| 2026-02-21 12:00 |
23:13:54.37 |
-23:29:06.4 |
HIP 114568 |
27.85 |
| 2026-02-22 00:00 |
23:13:57.24 |
-23:28:43.1 |
HIP 114568 |
28.59 |
| 2026-02-22 12:00 |
23:14:00.11 |
-23:28:19.9 |
HIP 114568 |
29.32 |
| 2026-02-23 00:00 |
23:14:02.99 |
-23:27:56.8 |
HIP 114568 |
30.06 |
| 2026-02-23 12:00 |
23:14:05.88 |
-23:27:33.8 |
HIP 114568 |
30.80 |
| 2026-02-24 00:00 |
23:14:08.77 |
-23:27:10.9 |
HIP 114568 |
31.54 |