メタデータ
| 項目 |
値 |
| Designation |
C/2003 T3 (Tabur) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2004-04-29T00:02:37.222080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:34Z |
| Obs used |
744 |
| NEO |
- |
| M1 |
5.900 |
| K1 |
14.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2004-08-03.0000000 |
| e |
0.99974038 |
| q (au) |
1.481076 |
| a (au) |
5704.858834 |
| i (deg) |
50.444452 |
| Ω (om, deg) |
347.057553 |
| ω (w, deg) |
43.773801 |
| M (ma, deg) |
0.000220 |
等級
散乱 + 全体線形
$$
M_a = (5.386 + 5.441\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.386 |
| n |
5.441 |
| gf |
1.000 |
| gb |
-0.998 |
| 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 |
| 2003-10-14 |
2004-04-28 |
-5.0339 |
+0.956 |
| 2004-04-29 |
2004-08-08 |
+0.8462 |
-0.347 |
| 2004-08-08 |
2004-09-10 |
+4.9041 |
-1.950 |
| 2004-09-10 |
2005-02-04 |
+4.1071 |
-1.943 |
| 2005-02-04 |
2005-05-03 |
-8.6614 |
+5.008 |
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 |
11:38:38.86 |
-16:01:45.4 |
HIP 56801 |
10.24 |
| 2026-09-20 12:00 |
11:38:41.44 |
-16:02:02.9 |
HIP 56801 |
9.95 |
| 2026-09-21 00:00 |
11:38:44.02 |
-16:02:20.4 |
HIP 56801 |
9.71 |
| 2026-09-21 12:00 |
11:38:46.60 |
-16:02:38.0 |
HIP 56801 |
9.50 |
| 2026-09-22 00:00 |
11:38:49.17 |
-16:02:55.8 |
HIP 56801 |
9.34 |
| 2026-09-22 12:00 |
11:38:51.75 |
-16:03:13.6 |
HIP 56801 |
9.23 |
| 2026-09-23 00:00 |
11:38:54.32 |
-16:03:31.5 |
HIP 56801 |
9.17 |
| 2026-09-23 12:00 |
11:38:56.89 |
-16:03:49.5 |
HIP 56801 |
9.15 |
| 2026-09-24 00:00 |
11:38:59.46 |
-16:04:07.6 |
HIP 56801 |
9.19 |
| 2026-09-24 12:00 |
11:39:02.02 |
-16:04:25.8 |
HIP 56801 |
9.27 |
| 2026-09-25 00:00 |
11:39:04.59 |
-16:04:44.0 |
HIP 56801 |
9.40 |
| 2026-09-25 12:00 |
11:39:07.15 |
-16:05:02.4 |
HIP 56801 |
9.58 |
| 2026-09-26 00:00 |
11:39:09.70 |
-16:05:20.8 |
HIP 56801 |
9.80 |
| 2026-09-26 12:00 |
11:39:12.26 |
-16:05:39.3 |
HIP 56801 |
10.06 |
| 2026-09-27 00:00 |
11:39:14.81 |
-16:05:58.0 |
HIP 56801 |
10.36 |
| 2026-09-27 12:00 |
11:39:17.35 |
-16:06:16.6 |
HIP 56801 |
10.70 |
| 2026-09-28 00:00 |
11:39:19.89 |
-16:06:35.4 |
HIP 56801 |
11.06 |
| 2026-09-28 12:00 |
11:39:22.43 |
-16:06:54.3 |
HIP 56801 |
11.46 |
| 2026-09-29 00:00 |
11:39:24.97 |
-16:07:13.2 |
HIP 56801 |
11.87 |
| 2026-09-29 12:00 |
11:39:27.50 |
-16:07:32.2 |
HIP 56801 |
12.31 |
| 2026-09-30 00:00 |
11:39:30.03 |
-16:07:51.3 |
HIP 56801 |
12.77 |
| 2026-09-30 12:00 |
11:39:32.55 |
-16:08:10.5 |
HIP 56801 |
13.25 |
| 2026-10-01 00:00 |
11:39:35.07 |
-16:08:29.7 |
HIP 56801 |
13.75 |
| 2026-10-01 12:00 |
11:39:37.58 |
-16:08:49.0 |
HIP 56801 |
14.26 |
| 2026-10-02 00:00 |
11:39:40.09 |
-16:09:08.4 |
HIP 56801 |
14.78 |
| 2026-10-02 12:00 |
11:39:42.59 |
-16:09:27.9 |
HIP 56801 |
15.31 |
| 2026-10-03 00:00 |
11:39:45.09 |
-16:09:47.4 |
HIP 56801 |
15.85 |
| 2026-10-03 12:00 |
11:39:47.58 |
-16:10:07.0 |
HIP 56801 |
16.41 |
| 2026-10-04 00:00 |
11:39:50.06 |
-16:10:26.7 |
HIP 56801 |
16.97 |
| 2026-10-04 12:00 |
11:39:52.54 |
-16:10:46.5 |
HIP 56801 |
17.53 |
| 2026-10-05 00:00 |
11:39:55.02 |
-16:11:06.3 |
HIP 56801 |
18.11 |
| 2026-10-05 12:00 |
11:39:57.49 |
-16:11:26.1 |
HIP 56801 |
18.68 |
| 2026-10-06 00:00 |
11:39:59.95 |
-16:11:46.1 |
HIP 56801 |
19.27 |
| 2026-10-06 12:00 |
11:40:02.40 |
-16:12:06.1 |
HIP 56801 |
19.86 |
| 2026-10-07 00:00 |
11:40:04.85 |
-16:12:26.1 |
HIP 56801 |
20.45 |
| 2026-10-07 12:00 |
11:40:07.29 |
-16:12:46.3 |
HIP 56801 |
21.04 |
| 2026-10-08 00:00 |
11:40:09.73 |
-16:13:06.5 |
HIP 56801 |
21.64 |
| 2026-10-08 12:00 |
11:40:12.15 |
-16:13:26.7 |
HIP 56801 |
22.24 |
| 2026-10-09 00:00 |
11:40:14.57 |
-16:13:47.0 |
HIP 56801 |
22.85 |
| 2026-10-09 12:00 |
11:40:16.98 |
-16:14:07.3 |
HIP 56801 |
23.45 |
| 2026-10-10 00:00 |
11:40:19.39 |
-16:14:27.7 |
HIP 56899 |
23.79 |
| 2026-10-10 12:00 |
11:40:21.78 |
-16:14:48.2 |
HIP 56899 |
23.64 |
| 2026-10-11 00:00 |
11:40:24.17 |
-16:15:08.7 |
HIP 56899 |
23.51 |