{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-04T19:06:49.942Z","years_from_j2000":26.676,"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-50626","name":"HD 50626","class":"g3v_yellow_main_sequence_star","category":"star","object_type":"G3V yellow main-sequence star","mag":9.02,"mag_band":"V","abs_mag":4.219,"abs_mag_band":"V","distance_ly":297.58801443615613,"distance_method":"parallax","ra_deg":101.1087,"dec_deg":-77.24574,"epoch_ra_deg":100.801987,"epoch_dec_deg":-77.271165,"epoch_moved_arcsec":2.685,"pm_ra_mas_yr":7.69,"pm_dec_mas_yr":100.37,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Mensa","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-50626","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"06444-7715","age_years":8363988000,"companions":[{"measured":2015,"magnitude":10.19,"components":null,"discoverer_code":"HDS 936","separation_arcsec":14.6,"position_angle_deg":55}],"mass_solar":1.006,"radius_solar":1.197,"spectral_type":"G3V","color_index_bv":0.669,"luminosity_solar":1.7881337486902158,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1975MSS...C01....0H, quality C)","surface_gravity_log_g":4.33,"surface_temperature_k":5812,"proper_motion_ra_mas_yr":7.69,"proper_motion_dec_mas_yr":100.37,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":1.4721},"designations":[{"catalog":"HD","designation":"HD 50626"},{"catalog":"HIP","designation":"HIP 32289"}],"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."}