メタデータ
| 項目 |
値 |
| Designation |
C/2003 T4 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-04-03T15:45:28.166400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:34Z |
| Obs used |
955 |
| NEO |
- |
| M1 |
9.200 |
| K1 |
6.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2004-10-20.0000000 |
| e |
1.00047448 |
| q (au) |
0.849741 |
| a (au) |
-1790.885861 |
| i (deg) |
86.761193 |
| Ω (om, deg) |
93.902875 |
| ω (w, deg) |
181.679273 |
| M (ma, deg) |
-0.002154 |
等級
散乱 + 全体線形
$$
M_a = (7.953 + 4.136\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.953 |
| n |
4.136 |
| gf |
0.800 |
| gb |
-1.000 |
| k |
0.988 |
| δ90 |
1.000 |
| 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 |
| 2003-10-13 |
2004-05-22 |
+1.4145 |
-1.791 |
| 2004-05-22 |
2004-09-06 |
+1.1723 |
-1.351 |
| 2004-09-06 |
2005-04-02 |
-1.5294 |
-0.289 |
| 2005-04-03 |
2005-05-04 |
+13.8649 |
+1.663 |
| 2005-05-04 |
2006-03-25 |
+0.8135 |
+1.141 |
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) |
| 2026-06-01 00:00 |
06:09:57.08 |
+09:01:26.1 |
HIP 29235 |
16.89 |
| 2026-06-01 12:00 |
06:09:59.62 |
+09:01:30.5 |
HIP 29235 |
17.05 |
| 2026-06-02 00:00 |
06:10:02.17 |
+09:01:34.8 |
HIP 29235 |
17.23 |
| 2026-06-02 12:00 |
06:10:04.72 |
+09:01:39.1 |
HIP 29235 |
17.43 |
| 2026-06-03 00:00 |
06:10:07.28 |
+09:01:43.3 |
HIP 29235 |
17.65 |
| 2026-06-03 12:00 |
06:10:09.85 |
+09:01:47.3 |
HIP 29235 |
17.89 |
| 2026-06-04 00:00 |
06:10:12.43 |
+09:01:51.3 |
HIP 29235 |
18.15 |
| 2026-06-04 12:00 |
06:10:15.01 |
+09:01:55.3 |
HIP 29235 |
18.43 |
| 2026-06-05 00:00 |
06:10:17.60 |
+09:01:59.1 |
HIP 29235 |
18.72 |
| 2026-06-05 12:00 |
06:10:20.20 |
+09:02:02.8 |
HIP 29235 |
19.03 |
| 2026-06-06 00:00 |
06:10:22.81 |
+09:02:06.5 |
HIP 29235 |
19.36 |
| 2026-06-06 12:00 |
06:10:25.42 |
+09:02:10.1 |
HIP 29235 |
19.70 |
| 2026-06-07 00:00 |
06:10:28.03 |
+09:02:13.6 |
HIP 29235 |
20.05 |
| 2026-06-07 12:00 |
06:10:30.66 |
+09:02:17.0 |
HIP 29235 |
20.42 |
| 2026-06-08 00:00 |
06:10:33.29 |
+09:02:20.3 |
HIP 29235 |
20.81 |
| 2026-06-08 12:00 |
06:10:35.92 |
+09:02:23.6 |
HIP 29235 |
21.20 |
| 2026-06-09 00:00 |
06:10:38.56 |
+09:02:26.7 |
HIP 29235 |
21.61 |
| 2026-06-09 12:00 |
06:10:41.21 |
+09:02:29.8 |
HIP 29235 |
22.03 |
| 2026-06-10 00:00 |
06:10:43.86 |
+09:02:32.8 |
HIP 29235 |
22.46 |
| 2026-06-10 12:00 |
06:10:46.52 |
+09:02:35.7 |
HIP 29235 |
22.90 |
| 2026-06-11 00:00 |
06:10:49.18 |
+09:02:38.5 |
HIP 29235 |
23.35 |
| 2026-06-11 12:00 |
06:10:51.84 |
+09:02:41.2 |
HIP 29235 |
23.81 |
| 2026-06-12 00:00 |
06:10:54.52 |
+09:02:43.8 |
HIP 29235 |
24.28 |
| 2026-06-12 12:00 |
06:10:57.19 |
+09:02:46.4 |
HIP 29235 |
24.76 |
| 2026-06-13 00:00 |
06:10:59.87 |
+09:02:48.9 |
HIP 29235 |
25.25 |
| 2026-06-13 12:00 |
06:11:02.55 |
+09:02:51.2 |
HIP 29235 |
25.74 |
| 2026-06-14 00:00 |
06:11:05.24 |
+09:02:53.5 |
HIP 29235 |
26.24 |
| 2026-06-14 12:00 |
06:11:07.93 |
+09:02:55.7 |
HIP 29496 |
26.43 |
| 2026-06-15 00:00 |
06:11:10.63 |
+09:02:57.9 |
HIP 29496 |
25.77 |
| 2026-06-15 12:00 |
06:11:13.32 |
+09:02:59.9 |
HIP 29496 |
25.11 |
| 2026-06-16 00:00 |
06:11:16.03 |
+09:03:01.8 |
HIP 29496 |
24.44 |
| 2026-06-16 12:00 |
06:11:18.73 |
+09:03:03.7 |
HIP 29496 |
23.77 |
| 2026-06-17 00:00 |
06:11:21.44 |
+09:03:05.5 |
HIP 29496 |
23.11 |
| 2026-06-17 12:00 |
06:11:24.14 |
+09:03:07.1 |
HIP 29496 |
22.44 |
| 2026-06-18 00:00 |
06:11:26.86 |
+09:03:08.7 |
HIP 29496 |
21.77 |
| 2026-06-18 12:00 |
06:11:29.57 |
+09:03:10.3 |
HIP 29496 |
21.11 |
| 2026-06-19 00:00 |
06:11:32.28 |
+09:03:11.7 |
HIP 29496 |
20.44 |
| 2026-06-19 12:00 |
06:11:35.00 |
+09:03:13.0 |
HIP 29496 |
19.77 |
| 2026-06-20 00:00 |
06:11:37.72 |
+09:03:14.3 |
HIP 29496 |
19.10 |
| 2026-06-20 12:00 |
06:11:40.44 |
+09:03:15.4 |
HIP 29496 |
18.43 |
| 2026-06-21 00:00 |
06:11:43.16 |
+09:03:16.5 |
HIP 29496 |
17.76 |
| 2026-06-21 12:00 |
06:11:45.88 |
+09:03:17.5 |
HIP 29496 |
17.09 |
| 2026-06-22 00:00 |
06:11:48.60 |
+09:03:18.4 |
HIP 29496 |
16.42 |