Spherical astronomy is the branch of astronomy that deals with the celestial sphere—a projection of celestial objects onto an imaginary sphere centered on the observer. It is the foundation for determining positions, timekeeping, and navigation.
You are in New York City (Latitude φ = 40.7° N). You want to observe a star with a Right Ascension of 5h and a Declination (δ) of +20°. If the Local Sidereal Time (LST) is 7h, what are the star’s Altitude and Azimuth? First, find the Hour Angle ( , or 30°. The Solution: Use the fundamental transformation formula: spherical astronomy problems and solutions
a=90∘−67∘55′=22∘05′a equals 90 raised to the composed with power minus 67 raised to the composed with power 55 prime equals 22 raised to the composed with power 05 prime ✅ The star's altitude is approximately . 2. Circumpolar Stars Problem: At what geographic latitude ( ) is the star Castor ( ) circumpolar (never sets)? Spherical astronomy is the branch of astronomy that
| Version | 2.0.5 |
|---|---|
| Last Updated | July 08, 2025 |
| Operating System | Windows 7 SP1, 8, 8.1, 10, 11 (32 & 64-bit) |
| Server Version | Windows Server 2016, 2019, 2022 (32 & 64-bit) |
| Category | Malware Prevention Tool |
| License Type | Shareware |
| Setup File Size | ~50 MB |
| Install Size | ~40 MB |
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