{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T11:27:57.423Z","years_from_j2000":26.683,"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-116836","name":"HD 116836","class":"a0iii_iv_white_giant","category":"star","object_type":"A0III/IV white giant","mag":6.31,"mag_band":"V","abs_mag":-1.891,"abs_mag_band":"V","distance_ly":1424.2635840900077,"distance_method":"parallax","ra_deg":201.776625,"dec_deg":-49.143709,"epoch_ra_deg":202.183128,"epoch_dec_deg":-49.283318,"epoch_moved_arcsec":0.423,"pm_ra_mas_yr":-14.83,"pm_dec_mas_yr":-5.57,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Centaurus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-116836","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"13271-4909","companions":[{"measured":2018,"magnitude":7.06,"components":null,"discoverer_code":"FIN 351","separation_arcsec":0.3,"position_angle_deg":160}],"spectral_type":"A0III/IV","color_index_bv":0.003,"luminosity_solar":497.0499105762351,"radial_velocity_km_s":-18,"spectral_type_source":"SIMBAD (1978MSS...C02....0H, quality D)","proper_motion_ra_mas_yr":-14.83,"proper_motion_dec_mas_yr":-5.57},"designations":[{"catalog":"HD","designation":"HD 116836"},{"catalog":"HIP","designation":"HIP 65606"},{"catalog":"HR","designation":"HR 5061"}],"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."}