Gaia Catalogue DR1: 3D Map of the Milky Way with 1 Billion Stars

Gaia is a European Space Agency mission designed to chart a three-dimensional map of the Milky Way. The Gaia Catalogue DR1 provides unprecedented positional measurements for about one billion stars, together with radial velocity measurements for the brightest 150 million objects. This dataset is published by NASA and was last updated in March 2026.

Use Cases

• Modeling the three-dimensional structure of the Milky Way based on the mission's stated purpose.
• Analyzing stellar motions and velocities based on the positional and radial velocity measurements.
• Creating detailed star catalogs for astronomical research based on the billion-star scale.
• Studying galactic evolution and dynamics based on the comprehensive stellar data.

Strengths

• Provides measurements for approximately one billion stars, indicating massive scale.
• Includes radial velocity data for 150 million of the brightest objects.
• Data originates from the dedicated Gaia space mission, suggesting high-precision astrometry.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• File formats include BIN and HTML, which may require specialized tools for analysis.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Data collected by the European Space Agency's Gaia space observatory mission.

Time Range

Mission launch date and observation period are not specified in the input.

Freshness

Last updated 2026-03-13 16:53:08.712412; freshness should be verified.

Geography

Observations cover the Milky Way galaxy.