NASA Goddard Space Flight Center Geodesy and Geophysics Laboratory

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Astronomy and Geodesy Scientific Data Products

Astronomy

Radio Fundamental Catalogue of compact radio sources. Provides positions, maps, and estimates of the correlated flux density for over 20,000 extragalactic radio sources.

VLBI Calibrator search engine allows to find compact radio sources useful as a calibrator for VLBI experiments within the specified search radius of the target objects.

The VLBI image database of compact radio sources. It provides over 100,000 images of more than twenty thousands active galaxy nuclei in radio waves.

Space geodesy

The Network Earth Rotation Service

Service of crustal deformations caused by mass loading. Updated hourly. Includes mass loading caused by
1. Ocean tides
2. Non-tidal ocean bottom pressure variations
3. Atmosphere pressure variations
4. Land water storage changes

Variability of the gravitational field of the Earth.

International Path Delay Service.

Atmospheric angular momentum online service.

NASA GSFC quarterly VLBI solutions.

Software

Space geodesy data analysis software suite (SGDASS )

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Last update: 2025.02.17_02:09:40 UTC