{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-02T21:45:18.584Z","years_from_j2000":26.671,"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-94510","name":"HD 94510","class":"k0iv_orange_subgiant","category":"star","object_type":"K0IV orange subgiant","mag":3.78,"mag_band":"V","abs_mag":1.458,"abs_mag_band":"V","distance_ly":95.0060912651102,"distance_method":"parallax","ra_deg":163.373385,"dec_deg":-58.853171,"epoch_ra_deg":163.644486,"epoch_dec_deg":-58.995562,"epoch_moved_arcsec":2.364,"pm_ra_mas_yr":79.75,"pm_dec_mas_yr":38.65,"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-94510","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"10535-5851","companions":[{"measured":2021,"magnitude":null,"components":"Aa,Ab","discoverer_code":"DUN 102","separation_arcsec":1.3,"position_angle_deg":258},{"measured":2016,"magnitude":7.84,"components":"AC","discoverer_code":"DUN 103","separation_arcsec":55.6,"position_angle_deg":6},{"measured":2016,"magnitude":6.23,"components":"AB","discoverer_code":"DUN 102","separation_arcsec":160.4,"position_angle_deg":205}],"spectral_type":"K0IV","color_index_bv":0.945,"luminosity_solar":22.740499508958955,"radial_velocity_km_s":8.1,"spectral_type_source":"SIMBAD (2006AJ....132..161G, quality C)","proper_motion_ra_mas_yr":79.75,"proper_motion_dec_mas_yr":38.65},"designations":[{"catalog":"Gliese","designation":"Gl 404.1"},{"catalog":"HD","designation":"HD 94510"},{"catalog":"HIP","designation":"HIP 53253"},{"catalog":"HR","designation":"HR 4257"}],"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."}