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P/2016 G1 (PANSTARRS)

メタデータ

項目 値
Designation P/2016 G1 (PANSTARRS)
Type P
Perihelion (tp_cal, UTC) 2017-01-26T04:39:52.557120Z
Orbit solution date (soln_date, UTC) 2021-08-06T00:42:46Z
Obs used 147
NEO -
M1 16.100
K1 4.500
PC -
オスキュレーティング軌道要素
項目 値
Epoch (epoch_cal, TDB) 2016-04-30.0000000
e 0.21010208
q (au) 2.040494
a (au) 2.583238
i (deg) 10.967835
Ω (om, deg) 204.074723
ω (w, deg) 111.280022
M (ma, deg) 295.621914

等級

P/2016 G1 (PANSTARRS) · Magnitude (Full range)

散乱 + 全体線形

$$ M_a = (15.642 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

モデル定数

項目 値
H0 15.642
n 2.000
gf 0.800
gb -0.903
k 0.999
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

ファインディングチャート

P/2016 G1 (PANSTARRS) · Next 30 Days

天体暦

Date/Time (UTC) RA (J2000) Dec (J2000) Nearest HIP Dist from HIP (arcmin)
2026-02-03 00:00 01:14:59.61 +04:47:38.6 HIP 5828 12.39
2026-02-03 12:00 01:15:44.32 +04:51:10.7 HIP 5969 19.29
2026-02-04 00:00 01:16:29.12 +04:54:43.3 HIP 5969 9.43
2026-02-04 12:00 01:17:14.00 +04:58:16.3 HIP 5969 8.93
2026-02-05 00:00 01:17:58.96 +05:01:49.7 HIP 5969 18.61
2026-02-05 12:00 01:18:44.00 +05:05:23.5 HIP 6142 26.25
2026-02-06 00:00 01:19:29.12 +05:08:57.8 HIP 6069 30.87
2026-02-06 12:00 01:20:14.33 +05:12:32.5 HIP 6416 32.24
2026-02-07 00:00 01:20:59.61 +05:16:07.5 HIP 6416 20.89
2026-02-07 12:00 01:21:44.97 +05:19:42.9 HIP 6416 10.63
2026-02-08 00:00 01:22:30.41 +05:23:18.7 HIP 6416 8.41
2026-02-08 12:00 01:23:15.94 +05:26:54.9 HIP 6525 11.84
2026-02-09 00:00 01:24:01.53 +05:30:31.3 HIP 6525 12.22
2026-02-09 12:00 01:24:47.21 +05:34:08.1 HIP 6638 8.69
2026-02-10 00:00 01:25:32.96 +05:37:45.3 HIP 6638 12.07
2026-02-10 12:00 01:26:18.79 +05:41:22.7 HIP 6638 22.41
2026-02-11 00:00 01:27:04.69 +05:45:00.4 HIP 6815 25.37
2026-02-11 12:00 01:27:50.67 +05:48:38.4 HIP 6815 27.59
2026-02-12 00:00 01:28:36.73 +05:52:16.6 HIP 7007 28.57
2026-02-12 12:00 01:29:22.86 +05:55:55.1 HIP 7007 17.45
2026-02-13 00:00 01:30:09.06 +05:59:33.9 HIP 7007 9.08
2026-02-13 12:00 01:30:55.33 +06:03:12.9 HIP 7046 4.97
2026-02-14 00:00 01:31:41.68 +06:06:52.1 HIP 7046 15.34
2026-02-14 12:00 01:32:28.10 +06:10:31.5 HIP 7046 27.19
2026-02-15 00:00 01:33:14.59 +06:14:11.1 HIP 7259 20.32
2026-02-15 12:00 01:34:01.15 +06:17:50.9 HIP 7259 17.63
2026-02-16 00:00 01:34:47.78 +06:21:30.8 HIP 7352 13.68
2026-02-16 12:00 01:35:34.48 +06:25:10.9 HIP 7454 7.29
2026-02-17 00:00 01:36:21.25 +06:28:51.1 HIP 7454 7.70
2026-02-17 12:00 01:37:08.09 +06:32:31.5 HIP 7502 12.49
2026-02-18 00:00 01:37:55.00 +06:36:12.0 HIP 7502 19.56
2026-02-18 12:00 01:38:41.97 +06:39:52.6 HIP 7774 26.32
2026-02-19 00:00 01:39:29.01 +06:43:33.3 HIP 7774 22.15
2026-02-19 12:00 01:40:16.11 +06:47:14.0 HIP 7803 18.06
2026-02-20 00:00 01:41:03.28 +06:50:54.8 HIP 7803 17.36
2026-02-20 12:00 01:41:50.52 +06:54:35.7 HIP 7803 24.04
2026-02-21 00:00 01:42:37.81 +06:58:16.6 HIP 8120 26.74
2026-02-21 12:00 01:43:25.17 +07:01:57.6 HIP 8120 14.46
2026-02-22 00:00 01:44:12.60 +07:05:38.5 HIP 8120 2.62
2026-02-22 12:00 01:45:00.08 +07:09:19.5 HIP 8120 10.43
2026-02-23 00:00 01:45:47.62 +07:13:00.4 HIP 8120 22.71
2026-02-23 12:00 01:46:35.23 +07:16:41.3 HIP 8319 20.73
2026-02-24 00:00 01:47:22.89 +07:20:22.2 HIP 8319 21.76