{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.674","julian_year":2026.674,"time":"2026-09-04T00:42:17.598Z","years_from_j2000":26.674,"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":"hip-71413","name":"HIP 71413","class":"g0_yellow_star","category":"star","object_type":"G0 yellow star","mag":9.8,"mag_band":"V","abs_mag":3.494,"abs_mag_band":"V","distance_ly":595.1760288723123,"distance_method":"parallax","ra_deg":219.0639,"dec_deg":19.405963,"epoch_ra_deg":219.375411,"epoch_dec_deg":19.288609,"epoch_moved_arcsec":0.295,"pm_ra_mas_yr":0.53,"pm_dec_mas_yr":-11.05,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Boötes","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-71413","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"14363+1924","age_years":4686632000,"companions":[{"measured":2022,"magnitude":10.67,"components":"AB","discoverer_code":"STF3087","separation_arcsec":2.4,"position_angle_deg":222},{"measured":1997,"magnitude":10.6,"components":"AC","discoverer_code":"ITF 140","separation_arcsec":4,"position_angle_deg":15},{"measured":2000,"magnitude":10.6,"components":"BC","discoverer_code":"ITF 140","separation_arcsec":7.6,"position_angle_deg":74}],"mass_solar":0.983,"radius_solar":0.976,"spectral_type":"G0","color_index_bv":0.652,"luminosity_solar":3.486582933528729,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (quality D)","surface_gravity_log_g":4.378,"surface_temperature_k":5708,"proper_motion_ra_mas_yr":0.53,"proper_motion_dec_mas_yr":-11.05,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.9059},"designations":[{"catalog":"HIP","designation":"HIP 71413"}],"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."}