Solar Data Archive Search
This database provides instant access to hundreds of solar images since January 2024 including ephemeries, daily Wolf sunspot numbers and more. Use the search mask below to retrieve historical data for scientific and educational use. The archive is updated daily with the latest observations (depending on weather conditions).
All times are in UTC.
Observation location: Alexandria, Egypt
- Julian Date
- Days since January 1, 4713 BC (days start at 12:00 UTC).
- R. A.
- Right Ascension of the Sun (measured from 0° at the vernal equinox).
- Decl.
- Declination of the Sun (measured from 0° at the vernal equinox).
- Dist.
- Distance from the Sun in astronomical units (AU). 1 AU = 149,597,870,700 m.
- Diam.
- Apparent diameter of the Sun in arcseconds.
- P
- Position angle of the solar north pole, measured eastward.
- Bo
- Heliographic latitude of the solar center (positive when the Sun’s north pole is visible).
- Lo
- Heliographic longitude of the central meridian in the Carrington rotation.
- Carr #
- Number of Carrington rotations since November 9, 1853.
- Az
- Azimuth of the Sun.
- H
- Elevation (height) of the Sun above the horizon (not corrected for atmospheric refraction).
- R, Rn, Rs
- Wolf Relative Number and R for northern/southern hemisphere.
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