{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.688","julian_year":2026.688,"time":"2026-09-09T04:30:43.955Z","years_from_j2000":26.688,"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-126759","name":"HD 126759","class":"apsi_white_star","category":"star","object_type":"ApSi white star","mag":6.4,"mag_band":"V","abs_mag":0.804,"abs_mag_band":"V","distance_ly":429.15297407953614,"distance_method":"parallax","ra_deg":217.216305,"dec_deg":-47.992086,"epoch_ra_deg":217.659508,"epoch_dec_deg":-48.112429,"epoch_moved_arcsec":0.79,"pm_ra_mas_yr":-22.53,"pm_dec_mas_yr":-19.2,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Lupus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-126759","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"14289-4800","companions":[{"measured":2016,"magnitude":14.64,"components":"AB","discoverer_code":"KOU  28","separation_arcsec":4.7,"position_angle_deg":213},{"measured":2016,"magnitude":14.6,"components":"AC","discoverer_code":"KOU  28","separation_arcsec":8.6,"position_angle_deg":300}],"mass_solar":3.26,"radius_solar":2.04,"spectral_type":"ApSi","color_index_bv":-0.112,"luminosity_solar":41.53364054890737,"radial_velocity_km_s":-4,"spectral_type_source":"SIMBAD (1978MSS...C02....0H, quality D)","surface_gravity_log_g":4.202,"surface_temperature_k":13114,"proper_motion_ra_mas_yr":-22.53,"proper_motion_dec_mas_yr":-19.2,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: above 7,500 K GSP-Phot's temperature and extinction are degenerate","bolometric_luminosity_solar":109.4995},"designations":[{"catalog":"HD","designation":"HD 126759"},{"catalog":"HIP","designation":"HIP 70809"}],"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."}