メタデータ
| 項目 |
値 |
| Designation |
C/2004 Q1 (Tucker) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2004-12-06T20:45:50.109120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:42Z |
| Obs used |
1972 |
| NEO |
- |
| M1 |
9.600 |
| K1 |
8.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2004-12-11.0000000 |
| e |
0.98903967 |
| q (au) |
2.046725 |
| a (au) |
186.739317 |
| i (deg) |
56.087689 |
| Ω (om, deg) |
22.130171 |
| ω (w, deg) |
32.968497 |
| M (ma, deg) |
0.001597 |
等級
散乱 + 全体線形
$$
M_a = (9.739 + 2.248\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.739 |
| n |
2.248 |
| gf |
1.000 |
| gb |
-0.999 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2004-08-22 |
2004-12-06 |
+31.1170 |
-10.936 |
| 2004-12-06 |
2006-04-29 |
+3.5317 |
-2.323 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
13:26:36.05 |
-16:36:42.8 |
HIP 65552 |
5.57 |
| 2026-09-20 12:00 |
13:26:38.56 |
-16:36:56.5 |
HIP 65552 |
5.88 |
| 2026-09-21 00:00 |
13:26:41.08 |
-16:37:10.4 |
HIP 65552 |
6.24 |
| 2026-09-21 12:00 |
13:26:43.61 |
-16:37:24.3 |
HIP 65552 |
6.64 |
| 2026-09-22 00:00 |
13:26:46.16 |
-16:37:38.4 |
HIP 65552 |
7.09 |
| 2026-09-22 12:00 |
13:26:48.71 |
-16:37:52.5 |
HIP 65552 |
7.56 |
| 2026-09-23 00:00 |
13:26:51.27 |
-16:38:06.7 |
HIP 65552 |
8.06 |
| 2026-09-23 12:00 |
13:26:53.83 |
-16:38:21.1 |
HIP 65552 |
8.58 |
| 2026-09-24 00:00 |
13:26:56.41 |
-16:38:35.5 |
HIP 65552 |
9.13 |
| 2026-09-24 12:00 |
13:26:59.00 |
-16:38:50.0 |
HIP 65552 |
9.69 |
| 2026-09-25 00:00 |
13:27:01.59 |
-16:39:04.5 |
HIP 65552 |
10.26 |
| 2026-09-25 12:00 |
13:27:04.19 |
-16:39:19.2 |
HIP 65552 |
10.85 |
| 2026-09-26 00:00 |
13:27:06.80 |
-16:39:34.0 |
HIP 65552 |
11.44 |
| 2026-09-26 12:00 |
13:27:09.42 |
-16:39:48.8 |
HIP 65552 |
12.05 |
| 2026-09-27 00:00 |
13:27:12.05 |
-16:40:03.8 |
HIP 65552 |
12.67 |
| 2026-09-27 12:00 |
13:27:14.68 |
-16:40:18.8 |
HIP 65552 |
13.29 |
| 2026-09-28 00:00 |
13:27:17.32 |
-16:40:33.9 |
HIP 65552 |
13.92 |
| 2026-09-28 12:00 |
13:27:19.97 |
-16:40:49.1 |
HIP 65552 |
14.55 |
| 2026-09-29 00:00 |
13:27:22.62 |
-16:41:04.3 |
HIP 65552 |
15.20 |
| 2026-09-29 12:00 |
13:27:25.28 |
-16:41:19.7 |
HIP 65552 |
15.84 |
| 2026-09-30 00:00 |
13:27:27.95 |
-16:41:35.1 |
HIP 65552 |
16.50 |
| 2026-09-30 12:00 |
13:27:30.63 |
-16:41:50.6 |
HIP 65552 |
17.15 |
| 2026-10-01 00:00 |
13:27:33.31 |
-16:42:06.2 |
HIP 65552 |
17.81 |
| 2026-10-01 12:00 |
13:27:36.00 |
-16:42:21.8 |
HIP 65552 |
18.48 |
| 2026-10-02 00:00 |
13:27:38.69 |
-16:42:37.6 |
HIP 65552 |
19.15 |
| 2026-10-02 12:00 |
13:27:41.39 |
-16:42:53.4 |
HIP 65552 |
19.82 |
| 2026-10-03 00:00 |
13:27:44.09 |
-16:43:09.3 |
HIP 65552 |
20.49 |
| 2026-10-03 12:00 |
13:27:46.80 |
-16:43:25.3 |
HIP 65552 |
21.17 |
| 2026-10-04 00:00 |
13:27:49.52 |
-16:43:41.3 |
HIP 65552 |
21.85 |
| 2026-10-04 12:00 |
13:27:52.24 |
-16:43:57.4 |
HIP 65552 |
22.54 |
| 2026-10-05 00:00 |
13:27:54.97 |
-16:44:13.6 |
HIP 65552 |
23.22 |
| 2026-10-05 12:00 |
13:27:57.70 |
-16:44:29.9 |
HIP 65552 |
23.91 |
| 2026-10-06 00:00 |
13:28:00.43 |
-16:44:46.2 |
HIP 65552 |
24.60 |
| 2026-10-06 12:00 |
13:28:03.17 |
-16:45:02.6 |
HIP 65552 |
25.30 |
| 2026-10-07 00:00 |
13:28:05.92 |
-16:45:19.0 |
HIP 65552 |
25.99 |
| 2026-10-07 12:00 |
13:28:08.67 |
-16:45:35.6 |
HIP 65552 |
26.69 |
| 2026-10-08 00:00 |
13:28:11.42 |
-16:45:52.2 |
HIP 65552 |
27.39 |
| 2026-10-08 12:00 |
13:28:14.18 |
-16:46:08.8 |
HIP 65552 |
28.09 |
| 2026-10-09 00:00 |
13:28:16.94 |
-16:46:25.5 |
HIP 65552 |
28.79 |
| 2026-10-09 12:00 |
13:28:19.70 |
-16:46:42.3 |
HIP 65552 |
29.50 |
| 2026-10-10 00:00 |
13:28:22.46 |
-16:46:59.2 |
HIP 65552 |
30.20 |
| 2026-10-10 12:00 |
13:28:25.23 |
-16:47:16.1 |
HIP 65552 |
30.91 |
| 2026-10-11 00:00 |
13:28:28.00 |
-16:47:33.1 |
HIP 65552 |
31.62 |