How to calculate the distance between a Star and Zenith

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SUMMARY

The discussion focuses on calculating the distance between a star and Zenith using specific astronomical parameters: Sidereal Time of 17 hours, Right Ascension (RA) of 16 hours 30 minutes, and Declination (DEC) of 50 degrees. The method involves solving a spherical triangle, a concept commonly found in celestial navigation literature. A reference link to a relevant resource is provided for further exploration of the topic.

PREREQUISITES
  • Understanding of Sidereal Time
  • Familiarity with Right Ascension (RA) and Declination (DEC)
  • Knowledge of spherical trigonometry
  • Basic principles of celestial navigation
NEXT STEPS
  • Study the principles of spherical triangles in astronomy
  • Learn about celestial navigation techniques
  • Explore the use of Sidereal Time in astronomical calculations
  • Review the provided resource on celestial navigation from St. Andrews University
USEFUL FOR

Astronomy students, celestial navigators, and anyone interested in calculating astronomical distances and understanding celestial mechanics.

KaBash
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I was reading through some questions online and one asked the reader to calculate the distance between a star and Zenith given Sidereal Time 17hrs, RA*=16hr30mins, DEC*=50degrees. Could someone explain to me how you would do this please? There were no examples and so far I haven't managed to find one online.

Thanks in advance! :)
 
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Aisling Kelly said:
I was reading through some questions online and one asked the reader to calculate the distance between a star and Zenith given Sidereal Time 17hrs, RA*=16hr30mins, DEC*=50degrees. Could someone explain to me how you would do this please? There were no examples and so far I haven't managed to find one online.

Thanks in advance! :)
I think it is solving a spherical triangle and appears in books on celestial navigation.
 
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http://star-www.st-and.ac.uk/~fv/webnotes/chapter7.htm
 
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