{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T14:36:13.185Z","years_from_j2000":26.681,"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-114520","name":"HD 114520","class":"f5iv_vsr_yellow_white_subgiant","category":"star","object_type":"F5IV-VSr yellow-white subgiant","mag":6.82,"mag_band":"V","abs_mag":1.067,"abs_mag_band":"V","distance_ly":461.32438686476024,"distance_method":"parallax","ra_deg":197.71813500000002,"dec_deg":21.233745,"epoch_ra_deg":198.045577,"epoch_dec_deg":21.090267,"epoch_moved_arcsec":1.67,"pm_ra_mas_yr":20.43,"pm_dec_mas_yr":-59.16,"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-114520","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"13109+2114","companions":[{"measured":2021,"magnitude":10.8,"components":"AB","discoverer_code":"COU  96","separation_arcsec":10.7,"position_angle_deg":310},{"measured":2015,"magnitude":12.2,"components":"AC","discoverer_code":"SIN  79","separation_arcsec":93.1,"position_angle_deg":23}],"spectral_type":"F5IV-VSr","uncertainties":{"metallicity_fe_h":[0.16,0.16]},"color_index_bv":0.42,"luminosity_solar":32.59867889044684,"metallicity_fe_h":-0.02,"radial_velocity_km_s":-9.2,"spectral_type_source":"SIMBAD (2001AJ....121.2148G, quality C)","surface_gravity_log_g":3.25,"surface_temperature_k":6518,"metallicity_fe_h_source":"One spectroscopic determination, compiled from the literature (PASTEL, Soubiran+ 2016)","proper_motion_ra_mas_yr":20.43,"proper_motion_dec_mas_yr":-59.16,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 114520"},{"catalog":"HIP","designation":"HIP 64312"}],"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."}