NLTT Catalog & First Supplement: Stars with High Proper Motion from Palomar Survey

Over 800 Palomar Proper Motion Survey plates were analyzed to compile stars with annual proper motions exceeding 0.18 arcseconds. The catalog, created by Luyten and coworkers using manual blinking and an automated scanner at the University of Minnesota, updates earlier LTT catalogs and includes a First Supplement with 398 additional stars. NASA HEASARC provides this service, with duplicate entries removed in June 2019.

Use Cases

• Identify candidate high-velocity stars based on measured proper motions.
• Study stellar population kinematics using motions derived from Palomar survey plates.
• Cross-reference star designations and positions with other astronomical catalogs.
• Analyze the completeness and accuracy of proper motion measurements for specific sky regions.

Strengths

• Based on analysis of more than 800 photographic plates from the Palomar survey.
• Includes a First Supplement with data for 398 specific stars.
• Updates and replaces earlier LTT catalogs, with duplicate entries removed in 2019.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect temporal and instrumental bias inherent to the Palomar survey plates and measurement era.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC)

Collection Method

Stars identified via hand blinking or an automated scanner on Palomar Proper Motion Survey plates, with motions measured at the University of Minnesota.

Time Range

Catalog published 1979-1980; supplement published 1980.

Freshness

Last updated 2026-03-13 18:29:44.278334; freshness should be verified.

Geography

Coverage is based on the Palomar Observatory survey plates.