{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T06:26:44.670Z","years_from_j2000":26.666,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"hd-25944","name":"HD 25944","class":"g8_k0iii_yellow_giant","category":"star","object_type":"G8/K0III yellow giant","mag":6.34,"mag_band":"V","abs_mag":1.603,"abs_mag_band":"V","distance_ly":288.88974999882834,"distance_method":"parallax","ra_deg":61.444635,"dec_deg":-20.512563,"epoch_ra_deg":61.739721,"epoch_dec_deg":-20.4395,"epoch_moved_arcsec":0.781,"pm_ra_mas_yr":-27.24,"pm_dec_mas_yr":-10.81,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Eridanus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-25944","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"radius_solar":7.605,"spectral_type":"G8/K0III","color_index_bv":0.918,"luminosity_solar":19.89756811090657,"radial_velocity_km_s":14,"spectral_type_source":"SIMBAD (1988MSS...C04....0H, quality D)","surface_gravity_log_g":2.983,"surface_temperature_k":5203,"proper_motion_ra_mas_yr":-27.24,"proper_motion_dec_mas_yr":-10.81,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":38.3021},"designations":[{"catalog":"HD","designation":"HD 25944"},{"catalog":"HIP","designation":"HIP 19111"},{"catalog":"HR","designation":"HR 1274"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}