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 |
-0.500 |
| 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
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) |
| 2026-05-12 00:00 |
11:33:51.70 |
-16:07:02.4 |
HIP 56418 |
5.17 |
| 2026-05-12 12:00 |
11:33:50.31 |
-16:06:44.2 |
HIP 56418 |
5.13 |
| 2026-05-13 00:00 |
11:33:48.95 |
-16:06:26.1 |
HIP 56418 |
5.12 |
| 2026-05-13 12:00 |
11:33:47.60 |
-16:06:08.0 |
HIP 56418 |
5.15 |
| 2026-05-14 00:00 |
11:33:46.28 |
-16:05:50.0 |
HIP 56418 |
5.21 |
| 2026-05-14 12:00 |
11:33:44.97 |
-16:05:32.1 |
HIP 56418 |
5.30 |
| 2026-05-15 00:00 |
11:33:43.69 |
-16:05:14.2 |
HIP 56418 |
5.42 |
| 2026-05-15 12:00 |
11:33:42.43 |
-16:04:56.4 |
HIP 56418 |
5.57 |
| 2026-05-16 00:00 |
11:33:41.18 |
-16:04:38.7 |
HIP 56418 |
5.75 |
| 2026-05-16 12:00 |
11:33:39.96 |
-16:04:21.0 |
HIP 56418 |
5.94 |
| 2026-05-17 00:00 |
11:33:38.76 |
-16:04:03.4 |
HIP 56418 |
6.15 |
| 2026-05-17 12:00 |
11:33:37.58 |
-16:03:45.9 |
HIP 56418 |
6.37 |
| 2026-05-18 00:00 |
11:33:36.41 |
-16:03:28.4 |
HIP 56418 |
6.61 |
| 2026-05-18 12:00 |
11:33:35.28 |
-16:03:11.0 |
HIP 56418 |
6.86 |
| 2026-05-19 00:00 |
11:33:34.16 |
-16:02:53.7 |
HIP 56418 |
7.12 |
| 2026-05-19 12:00 |
11:33:33.06 |
-16:02:36.5 |
HIP 56418 |
7.38 |
| 2026-05-20 00:00 |
11:33:31.98 |
-16:02:19.4 |
HIP 56418 |
7.65 |
| 2026-05-20 12:00 |
11:33:30.93 |
-16:02:02.3 |
HIP 56418 |
7.92 |
| 2026-05-21 00:00 |
11:33:29.89 |
-16:01:45.3 |
HIP 56418 |
8.20 |
| 2026-05-21 12:00 |
11:33:28.88 |
-16:01:28.4 |
HIP 56418 |
8.48 |
| 2026-05-22 00:00 |
11:33:27.89 |
-16:01:11.6 |
HIP 56418 |
8.76 |
| 2026-05-22 12:00 |
11:33:26.92 |
-16:00:54.9 |
HIP 56418 |
9.04 |
| 2026-05-23 00:00 |
11:33:25.97 |
-16:00:38.3 |
HIP 56418 |
9.32 |
| 2026-05-23 12:00 |
11:33:25.04 |
-16:00:21.7 |
HIP 56418 |
9.61 |
| 2026-05-24 00:00 |
11:33:24.14 |
-16:00:05.3 |
HIP 56418 |
9.89 |
| 2026-05-24 12:00 |
11:33:23.25 |
-15:59:48.9 |
HIP 56418 |
10.17 |
| 2026-05-25 00:00 |
11:33:22.39 |
-15:59:32.7 |
HIP 56418 |
10.45 |
| 2026-05-25 12:00 |
11:33:21.55 |
-15:59:16.5 |
HIP 56418 |
10.72 |
| 2026-05-26 00:00 |
11:33:20.73 |
-15:59:00.4 |
HIP 56418 |
11.00 |
| 2026-05-26 12:00 |
11:33:19.93 |
-15:58:44.4 |
HIP 56418 |
11.27 |
| 2026-05-27 00:00 |
11:33:19.16 |
-15:58:28.6 |
HIP 56418 |
11.54 |
| 2026-05-27 12:00 |
11:33:18.40 |
-15:58:12.8 |
HIP 56418 |
11.81 |
| 2026-05-28 00:00 |
11:33:17.67 |
-15:57:57.1 |
HIP 56418 |
12.07 |
| 2026-05-28 12:00 |
11:33:16.96 |
-15:57:41.5 |
HIP 56418 |
12.33 |
| 2026-05-29 00:00 |
11:33:16.27 |
-15:57:26.0 |
HIP 56418 |
12.59 |
| 2026-05-29 12:00 |
11:33:15.60 |
-15:57:10.6 |
HIP 56418 |
12.85 |
| 2026-05-30 00:00 |
11:33:14.96 |
-15:56:55.4 |
HIP 56418 |
13.10 |
| 2026-05-30 12:00 |
11:33:14.34 |
-15:56:40.2 |
HIP 56418 |
13.35 |
| 2026-05-31 00:00 |
11:33:13.73 |
-15:56:25.1 |
HIP 56418 |
13.59 |
| 2026-05-31 12:00 |
11:33:13.15 |
-15:56:10.2 |
HIP 56418 |
13.83 |
| 2026-06-01 00:00 |
11:33:12.60 |
-15:55:55.3 |
HIP 56418 |
14.07 |
| 2026-06-01 12:00 |
11:33:12.06 |
-15:55:40.6 |
HIP 56418 |
14.30 |
| 2026-06-02 00:00 |
11:33:11.55 |
-15:55:25.9 |
HIP 56418 |
14.53 |