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P/2005 T3 (Read)

メタデータ

項目 値
Designation P/2005 T3 (Read)
Type P
Perihelion (tp_cal, UTC) 2006-01-12T10:35:40.450560Z
Orbit solution date (soln_date, UTC) 2021-04-15T23:30:53Z
Obs used 42
NEO -
M1 9.200
K1 10.000
PC 0.030
オスキュレーティング軌道要素
項目 値
Epoch (epoch_cal, TDB) 2005-10-24.0000000
e 0.17378534
q (au) 6.202461
a (au) 7.507082
i (deg) 6.263090
Ω (om, deg) 27.995785
ω (w, deg) 8.164900
M (ma, deg) 356.145419

等級

P/2005 T3 (Read) · Magnitude (Full range)

散乱 + 全体線形

$$ M_a = (12.262 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

モデル定数

項目 値
H0 12.262
n 2.000
gf 0.955
gb -0.500
k 1.000
δ90 8.889
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 00:49:54.56 +04:37:52.4 HIP 3929 9.14
2026-02-03 12:00 00:50:09.36 +04:39:41.6 HIP 3929 7.54
2026-02-04 00:00 00:50:24.25 +04:41:31.4 HIP 3929 8.00
2026-02-04 12:00 00:50:39.23 +04:43:21.6 HIP 3929 10.29
2026-02-05 00:00 00:50:54.31 +04:45:12.4 HIP 3929 13.52
2026-02-05 12:00 00:51:09.48 +04:47:03.7 HIP 3929 17.19
2026-02-06 00:00 00:51:24.74 +04:48:55.5 HIP 3929 21.08
2026-02-06 12:00 00:51:40.09 +04:50:47.7 HIP 4169 24.22
2026-02-07 00:00 00:51:55.53 +04:52:40.5 HIP 4169 21.08
2026-02-07 12:00 00:52:11.06 +04:54:33.7 HIP 4173 17.89
2026-02-08 00:00 00:52:26.68 +04:56:27.5 HIP 4173 13.61
2026-02-08 12:00 00:52:42.38 +04:58:21.7 HIP 4173 9.34
2026-02-09 00:00 00:52:58.18 +05:00:16.3 HIP 4173 5.20
2026-02-09 12:00 00:53:14.06 +05:02:11.5 HIP 4173 2.26
2026-02-10 00:00 00:53:30.03 +05:04:07.1 HIP 4173 4.69
2026-02-10 12:00 00:53:46.08 +05:06:03.1 HIP 4173 8.84
2026-02-11 00:00 00:54:02.22 +05:07:59.6 HIP 4173 13.21
2026-02-11 12:00 00:54:18.44 +05:09:56.6 HIP 4173 17.65
2026-02-12 00:00 00:54:34.74 +05:11:54.0 HIP 4325 15.67
2026-02-12 12:00 00:54:51.13 +05:13:51.8 HIP 4325 11.36
2026-02-13 00:00 00:55:07.60 +05:15:50.1 HIP 4325 7.29
2026-02-13 12:00 00:55:24.15 +05:17:48.8 HIP 4325 4.33
2026-02-14 00:00 00:55:40.79 +05:19:47.9 HIP 4325 5.12
2026-02-14 12:00 00:55:57.50 +05:21:47.5 HIP 4325 8.73
2026-02-15 00:00 00:56:14.29 +05:23:47.5 HIP 4325 13.01
2026-02-15 12:00 00:56:31.16 +05:25:47.8 HIP 4325 17.50
2026-02-16 00:00 00:56:48.11 +05:27:48.6 HIP 4325 22.07
2026-02-16 12:00 00:57:05.14 +05:29:49.8 HIP 4518 25.56
2026-02-17 00:00 00:57:22.25 +05:31:51.4 HIP 4518 21.93
2026-02-17 12:00 00:57:39.43 +05:33:53.4 HIP 4518 18.78
2026-02-18 00:00 00:57:56.68 +05:35:55.7 HIP 4518 16.39
2026-02-18 12:00 00:58:14.01 +05:37:58.4 HIP 4518 15.17
2026-02-19 00:00 00:58:31.42 +05:40:01.6 HIP 4518 15.40
2026-02-19 12:00 00:58:48.89 +05:42:05.0 HIP 4518 17.05
2026-02-20 00:00 00:59:06.44 +05:44:08.9 HIP 4518 19.77
2026-02-20 12:00 00:59:24.06 +05:46:13.1 HIP 4518 23.20
2026-02-21 00:00 00:59:41.76 +05:48:17.6 HIP 4686 25.03
2026-02-21 12:00 00:59:59.52 +05:50:22.5 HIP 4686 22.03
2026-02-22 00:00 01:00:17.35 +05:52:27.8 HIP 4686 19.78
2026-02-22 12:00 01:00:35.25 +05:54:33.3 HIP 4686 18.59
2026-02-23 00:00 01:00:53.22 +05:56:39.2 HIP 4686 18.67
2026-02-23 12:00 01:01:11.25 +05:58:45.5 HIP 4841 17.82
2026-02-24 00:00 01:01:29.35 +06:00:52.0 HIP 4841 14.91