Apparent Positions of Planets

TL;DR

This paper develops a system for calculating the apparent positions of planets using updated models and compares the results with established references, confirming their accuracy.

Contribution

It introduces a new system based on recent models for precise planetary position calculations and validates it against authoritative sources.

Findings

Results agree with the Astronomical Almanac

Updated models improve calculation accuracy

System confirms correctness of planetary positions

Abstract

The apparent positions of planets are determined by means of the fundamental ephemerides, the precession-nutation models of the Earth, the gravitational effects and aberrations et al. Around 2000, many astrometrical conceptions, models and theories had been newly defined and updated:for the fiducial celestial reference system, the ICRS is introduced, the fundamental ephemerides - DE405/LE405 et al.,precession-nutation model - IAU 2000A/IAU 2006 model. Using the traditional algorithm and the updated models, we develop the system of calculating the apparent positions of planets. The results are compared with the Astronomical Almanac and proved in their correctness.