{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T04:18:02.423Z","years_from_j2000":26.669,"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-93344","name":"HD 93344","class":"a5iv_v_white_subgiant","category":"star","object_type":"A5IV/V white subgiant","mag":6.25,"mag_band":"V","abs_mag":1.177,"abs_mag_band":"V","distance_ly":337.286790262705,"distance_method":"parallax","ra_deg":161.08365,"dec_deg":-70.859721,"epoch_ra_deg":161.280819,"epoch_dec_deg":-71.000449,"epoch_moved_arcsec":1.228,"pm_ra_mas_yr":-46.04,"pm_dec_mas_yr":0.85,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Carina","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-93344","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"10443-7052","age_years":874860640,"companions":[{"measured":2015,"magnitude":9.75,"components":"AC","discoverer_code":"DUN  99","separation_arcsec":42.6,"position_angle_deg":45},{"measured":2015,"magnitude":6.47,"components":"AB","discoverer_code":"DUN  99","separation_arcsec":62.6,"position_angle_deg":75}],"mass_solar":2.092,"radius_solar":3.196,"spectral_type":"A5IV/V","color_index_bv":0.208,"luminosity_solar":29.45777902339458,"radial_velocity_km_s":10,"spectral_type_source":"SIMBAD (1975MSS...C01....0H, quality D)","surface_gravity_log_g":3.589,"surface_temperature_k":7562,"proper_motion_ra_mas_yr":-46.04,"proper_motion_dec_mas_yr":0.85,"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; Gaia's classifier calls the source a binary, which GSP-Phot fitted as one star","bolometric_luminosity_solar":29.6503},"designations":[{"catalog":"HD","designation":"HD 93344"},{"catalog":"HIP","designation":"HIP 52520"},{"catalog":"HR","designation":"HR 4211"}],"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."}