{"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":"2026-09-02T17:22:12.780Z","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-110571","name":"HD 110571","class":"g9iii_yellow_giant","category":"star","object_type":"G9III yellow giant","mag":8.8,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":190.73115,"dec_deg":25.909707,"epoch_ra_deg":191.062612,"epoch_dec_deg":25.762428,"epoch_moved_arcsec":0.243,"pm_ra_mas_yr":3.64,"pm_dec_mas_yr":-8.36,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Coma Berenices","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-110571","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"12429+2555","age_years":376940800,"companions":[{"measured":2021,"magnitude":12.33,"components":null,"discoverer_code":"ES  438","separation_arcsec":5.7,"position_angle_deg":285}],"mass_solar":3.001,"radius_solar":11.065,"spectral_type":"G9III","color_index_bv":0.786,"radial_velocity_km_s":-27.6,"spectral_type_source":"SIMBAD (1997JApA...18..161Y, quality C)","surface_gravity_log_g":2.748,"surface_temperature_k":5054,"proper_motion_ra_mas_yr":3.64,"proper_motion_dec_mas_yr":-8.36,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":77.438},"designations":[{"catalog":"HD","designation":"HD 110571"},{"catalog":"HIP","designation":"HIP 62033"}],"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."}