C/2003 T2 (LINEAR)
メタデータ
| 項目 |
値 |
| Designation |
C/2003 T2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-11-14T00:39:55.854720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:34Z |
| Obs used |
442 |
| NEO |
- |
| M1 |
10.400 |
| K1 |
24.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2003-11-29.0000000 |
| e |
0.99974064 |
| q (au) |
1.786356 |
| a (au) |
6887.427569 |
| i (deg) |
87.531639 |
| Ω (om, deg) |
238.532615 |
| ω (w, deg) |
152.233201 |
| M (ma, deg) |
0.000026 |
等級
散乱 + 全体線形
$$
M_a = (12.724 + 4.479\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.724 |
| n |
4.479 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
13:50:31.12 |
-67:33:48.3 |
HIP 67341 |
15.66 |
| 2026-02-03 12:00 |
13:50:29.63 |
-67:34:18.7 |
HIP 67341 |
15.79 |
| 2026-02-04 00:00 |
13:50:28.08 |
-67:34:49.0 |
HIP 67341 |
15.93 |
| 2026-02-04 12:00 |
13:50:26.47 |
-67:35:19.1 |
HIP 67341 |
16.08 |
| 2026-02-05 00:00 |
13:50:24.81 |
-67:35:49.1 |
HIP 67341 |
16.24 |
| 2026-02-05 12:00 |
13:50:23.08 |
-67:36:19.0 |
HIP 67341 |
16.41 |
| 2026-02-06 00:00 |
13:50:21.29 |
-67:36:48.6 |
HIP 67341 |
16.59 |
| 2026-02-06 12:00 |
13:50:19.45 |
-67:37:18.2 |
HIP 67341 |
16.77 |
| 2026-02-07 00:00 |
13:50:17.54 |
-67:37:47.6 |
HIP 67341 |
16.97 |
| 2026-02-07 12:00 |
13:50:15.58 |
-67:38:16.8 |
HIP 67341 |
17.17 |
| 2026-02-08 00:00 |
13:50:13.56 |
-67:38:45.8 |
HIP 67341 |
17.38 |
| 2026-02-08 12:00 |
13:50:11.48 |
-67:39:14.7 |
HIP 67341 |
17.60 |
| 2026-02-09 00:00 |
13:50:09.34 |
-67:39:43.5 |
HIP 67341 |
17.83 |
| 2026-02-09 12:00 |
13:50:07.14 |
-67:40:12.0 |
HIP 67341 |
18.06 |
| 2026-02-10 00:00 |
13:50:04.88 |
-67:40:40.4 |
HIP 67341 |
18.30 |
| 2026-02-10 12:00 |
13:50:02.57 |
-67:41:08.6 |
HIP 67341 |
18.54 |
| 2026-02-11 00:00 |
13:50:00.20 |
-67:41:36.7 |
HIP 67341 |
18.79 |
| 2026-02-11 12:00 |
13:49:57.77 |
-67:42:04.5 |
HIP 67341 |
19.04 |
| 2026-02-12 00:00 |
13:49:55.28 |
-67:42:32.2 |
HIP 67341 |
19.30 |
| 2026-02-12 12:00 |
13:49:52.73 |
-67:42:59.7 |
HIP 67341 |
19.57 |
| 2026-02-13 00:00 |
13:49:50.13 |
-67:43:27.0 |
HIP 67341 |
19.84 |
| 2026-02-13 12:00 |
13:49:47.47 |
-67:43:54.1 |
HIP 67341 |
20.11 |
| 2026-02-14 00:00 |
13:49:44.75 |
-67:44:21.1 |
HIP 67341 |
20.39 |
| 2026-02-14 12:00 |
13:49:41.98 |
-67:44:47.8 |
HIP 67341 |
20.67 |
| 2026-02-15 00:00 |
13:49:39.14 |
-67:45:14.3 |
HIP 67341 |
20.96 |
| 2026-02-15 12:00 |
13:49:36.26 |
-67:45:40.7 |
HIP 67341 |
21.25 |
| 2026-02-16 00:00 |
13:49:33.31 |
-67:46:06.8 |
HIP 67341 |
21.54 |
| 2026-02-16 12:00 |
13:49:30.31 |
-67:46:32.7 |
HIP 67341 |
21.84 |
| 2026-02-17 00:00 |
13:49:27.25 |
-67:46:58.5 |
HIP 67341 |
22.14 |
| 2026-02-17 12:00 |
13:49:24.14 |
-67:47:24.0 |
HIP 67345 |
22.43 |
| 2026-02-18 00:00 |
13:49:20.97 |
-67:47:49.3 |
HIP 67345 |
21.94 |
| 2026-02-18 12:00 |
13:49:17.75 |
-67:48:14.4 |
HIP 67345 |
21.45 |
| 2026-02-19 00:00 |
13:49:14.47 |
-67:48:39.2 |
HIP 67345 |
20.97 |
| 2026-02-19 12:00 |
13:49:11.13 |
-67:49:03.9 |
HIP 67345 |
20.48 |
| 2026-02-20 00:00 |
13:49:07.74 |
-67:49:28.3 |
HIP 67345 |
20.01 |
| 2026-02-20 12:00 |
13:49:04.30 |
-67:49:52.5 |
HIP 67345 |
19.53 |
| 2026-02-21 00:00 |
13:49:00.80 |
-67:50:16.5 |
HIP 67345 |
19.06 |
| 2026-02-21 12:00 |
13:48:57.25 |
-67:50:40.3 |
HIP 67345 |
18.60 |
| 2026-02-22 00:00 |
13:48:53.65 |
-67:51:03.8 |
HIP 67345 |
18.14 |
| 2026-02-22 12:00 |
13:48:49.99 |
-67:51:27.1 |
HIP 67345 |
17.69 |
| 2026-02-23 00:00 |
13:48:46.28 |
-67:51:50.2 |
HIP 67345 |
17.24 |
| 2026-02-23 12:00 |
13:48:42.52 |
-67:52:13.0 |
HIP 67345 |
16.81 |
| 2026-02-24 00:00 |
13:48:38.71 |
-67:52:35.6 |
HIP 67345 |
16.37 |