天文术语P-Qpan摇镜头parryarc彩晕弧partial-eclipsesolution偏食解particleastrophysics粒子天体物理pathofannularity环食带pathoftotality全食带PDS,photo-digitizingsystem、PDS、数字图象仪、photometricdatasystem测光数据仪penetrativeconvection贯穿对流pentaprismtest五棱镜检验percolation渗流periapse近质心点periapsedistance近质心距periapsisdistance近拱距perigalacticdistance近银心距perigalacticon近银心点perimartian近火点periodgap周期空隙period-luminosity-colourrelation周光色关系PG1159starPG1159恒星photoflo去渍剂photographicspectroscopy照相分光photometricaccuracy测光精度photometricerror测光误差photometricnight测光夜photometricstandardstar测光标准星photosphericabundance光球丰度photosphericactivity光球活动photosphericline光球谱线planetarybiology行星生物学planetarygeology行星地质学Pleiad昴团星plerion类蟹遗迹plerionicremnant类蟹遗迹plerionicsupernovaremnant类蟹超新星遗迹plumbicon氧化铅光导摄象管pluton类冥行星p-modep模、压力模pointimgaccuracy指向精度pointspreadfunction点扩散函数polarimetricstandardstar偏振标准星polarizationstandardstar偏振标准星polar-ringgalaxy极环星系Portia天卫十二postAGBstarAGB后恒星post-core-collapsecluster核心坍缩后星团post-coronalregion冕外区post-main-sequencestar主序后星postred-supergiant红超巨后星poststarburstgalaxy星暴后星系postTTauristar金牛T后星potassium-argondating钾氩计年precataclysmicbinary激变前双星precataclysmicvariable激变前变星precedinglimb西边缘、前导边缘precessing-diskmodel进动盘模型precessionglobe岁差仪precessionperiod进动周期preflash预照光pre-main-sequencespectroscopic主序前分光双星binarypre-planetarydisk前行星盘pre-whitedwarf白矮前身星primarycrater初级陨击坑primordialbinary原始双星principleofmediocrity折衷原则progenitor前身星;前身天体progenitorstar前身星projecteddensityprofile投影密度轮廓proper-motionmembership自行成员星properreferenceframe固有参考架properreferencesystem固有参考系proplyd原行星盘proto-binary原双星proto-cluster原星团proto-clusterofgalaxies原星系团proto-earth原地球proto-galacticcloud原星系云proto-galacticobject原星系天体proto-Galaxy原银河系proto-globularcluster原球状星团proto-Jupiter原木星proto-planet原行星proto-planetarydisk原行星盘proto-planetarysystem原行星系proto-shellstar原气壳星proto-sun原太阳pseudobody-fixedsystem准地固坐标系Puck天卫十五pulsartimescale脉冲星时标pulsationaxis脉动对称轴pulsationequation脉动方程pulsationfrequency脉动频率pulsationphase脉动阶段pulsationpole脉动极pulselightcurve脉冲光变曲线pyrometry高温测量QPO,quasi-period