{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-03T06:04:27.980Z","years_from_j2000":26.671,"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-2814","name":"HD 2814","class":"g0_yellow_star","category":"star","object_type":"G0 yellow star","mag":8.11,"mag_band":"V","abs_mag":2.072,"abs_mag_band":"V","distance_ly":526.0586000884687,"distance_method":"parallax","ra_deg":7.95612,"dec_deg":36.967161,"epoch_ra_deg":8.314269,"epoch_dec_deg":37.115499,"epoch_moved_arcsec":0.413,"pm_ra_mas_yr":-14.88,"pm_dec_mas_yr":4.22,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Andromeda","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-2814","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"00318+3658","age_years":949760200,"companions":[{"measured":2020,"magnitude":10.68,"components":"AB","discoverer_code":"STT  13","separation_arcsec":6.7,"position_angle_deg":132},{"measured":2017,"magnitude":12.65,"components":"AC","discoverer_code":"STT  13","separation_arcsec":30.7,"position_angle_deg":165},{"measured":2017,"magnitude":10.65,"components":"AD","discoverer_code":"STT  13","separation_arcsec":42.5,"position_angle_deg":174}],"mass_solar":2.133,"radius_solar":5.462,"spectral_type":"G0","color_index_bv":0.88,"luminosity_solar":12.918140390030565,"radial_velocity_km_s":-19.7,"spectral_type_source":"SIMBAD (1993yCat.3135....0C, quality E)","surface_gravity_log_g":3.201,"surface_temperature_k":5710,"proper_motion_ra_mas_yr":-14.88,"proper_motion_dec_mas_yr":4.22,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":27.0255},"designations":[{"catalog":"HD","designation":"HD 2814"},{"catalog":"HIP","designation":"HIP 2509"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-02T19:50:56.720Z","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."}