celestial horizon

1. You can determine latitude from the angle between a celestial object and the horizon, and you can calculate longitude from the Earth's rotation.
   根据空中某个物体与地平线之间的角度可以确定纬度，然后根据地球旋转计算出经度。
2. The maximum parallax observed when the celestial body is at the horizon.
   当天体在地平面上时观测到的最大视差。
3. A Celestial Analytic Positioning Method by Stellar Horizon Atmospheric Refraction Application of the Improved Particle Filter Algorithm to Autonomous Celestial Navigation for Deep-Space Exploration
   新颖星光大气折射模型及天文导航迭代算法研究（英文）改进的粒子滤波在深空探测自主天文导航中的应用
4. The great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth.
   天球上的一个大圆，有一个通过地球的中心并与观察者的视野平行的平面。
5. A great circle on the celestial sphere passing through the zenith and perpendicular to the horizon.
   与水平线垂直的宇宙天体范围内的大圈，它经过天顶和地点。
6. The angular distance of a celestial body below the horizon.
   在地平线以下消失；指太阳和月亮等天体。

noun

1. the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth

   Synonym:    horizon