{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.670","julian_year":2026.67,"time":"2026-09-02T18:29:53.870Z","years_from_j2000":26.67,"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-14633","name":"HD 14633","class":"on8_5v_blue_star","category":"star","object_type":"ON8.5V blue star","mag":7.46,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":35.72622,"dec_deg":41.479924,"epoch_ra_deg":36.146318,"epoch_dec_deg":41.602254,"epoch_moved_arcsec":0.178,"pm_ra_mas_yr":0.42,"pm_dec_mas_yr":-6.66,"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-14633","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"02228+4124","companions":[{"measured":2001,"magnitude":18,"components":"CD","discoverer_code":"TRN  10","separation_arcsec":2.2,"position_angle_deg":97}],"radius_solar":5.975,"spectral_type":"ON8.5V","color_index_bv":-0.204,"radial_velocity_km_s":-46,"spectral_type_source":"SIMBAD (2011ApJS..193...24S, quality C)","surface_gravity_log_g":4.046,"surface_temperature_k":29576,"proper_motion_ra_mas_yr":0.42,"proper_motion_dec_mas_yr":-6.66,"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"},"designations":[{"catalog":"HD","designation":"HD 14633"},{"catalog":"HIP","designation":"HIP 11099"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}