UltracoolSheet: Catalog of 3000+ Ultracool Dwarfs and Exoplanets

The UltracoolSheet contains over 3000 ultracool dwarfs and imaged exoplanets. It includes photometry, astrometry, proper motions, parallaxes, multiplicity data, and spectroscopic classifications. The catalog is maintained by researchers including Will Best and was compiled from multiple papers, with a first public release dated April 15, 2015.

Use Cases

• Analyze stellar properties based on photometry and spectroscopic classifications
• Study orbital dynamics based on multiplicity and orbit determination data
• Calculate distances and motions based on parallaxes and proper motions
• Identify and classify ultracool dwarfs based on spectral type data

Strengths

• Over 3000 objects, providing a substantial sample size
• Compiles data from multiple authoritative papers, superseding previous compilations
• Includes citation codes linking data to original sources

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Last update date is unknown; freshness unverified

Provenance

Source

Compiled from papers by Dupuy & Liu (2012), Dupuy & Kraus (2013), Liu et al. (2016), Best et al. (2018), and Best et al. (2020b)

Collection Method

Aggregation of published astronomical data into a unified catalog

Time Range

Data known as of April 15, 2015, augmented by more recent discoveries

Geography

Extended solar neighborhood out to approximately 100 parsecs