SDSS DR19: Updated Star, Galaxy, and Quasar Classification Data

Updated 2025, this dataset is a release from the Sloan Digital Sky Survey (SDSS) Data Release 19, likely containing astronomical objects classified as stars, galaxies, or quasars. The description mentions it includes features like petroR50, extinction, and proper motion, and is updated relative to DR17 with redshift data removed to prevent leakage. The dataset appears to be structured for classification tasks.

Use Cases

• Train classification models to distinguish stars, galaxies, and quasars based on photometric features.
• Analyze the relationship between extinction and object type.
• Study proper motion characteristics of different astronomical object classes.
• Benchmark classification algorithms using updated SDSS data.
• Investigate the impact of removing redshift data on classification performance.

Strengths

• Based on the authoritative Sloan Digital Sky Survey (SDSS) data release.
• Updated in 2025 relative to the earlier DR17 version.
• Includes specific astronomical features like petroR50, extinction, and proper motion.

Limitations

• Row count and dataset size are unknown.
• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

Sloan Digital Sky Survey (SDSS)