Examples
Examples
Try the starting example
- Observer latitude (degrees)
- 51.5
- Declination (degrees)
- 20
- Hour angle (degrees)
- 30
- Geometric altitude (degrees)
- 50.738779
Try another scenario
- Observer latitude (degrees)
- 56.650000000000006
- Declination (degrees)
- 20
- Hour angle (degrees)
- 30
- Geometric altitude (degrees)
- 47.145721
Calculation method
Calculation method
Geometric altitude (degrees)
sin alt=sin lat sin dec+cos lat cos dec cos HA.
Symbols and units
- a
- Observer latitude (degrees)
- b
- Declination (degrees)
- c
- Hour angle (degrees)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- No atmospheric refraction correction. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. No atmospheric refraction correction.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.