{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.654","julian_year":2026.654,"time":"2026-08-27T22:30:11.168Z","years_from_j2000":26.654,"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-76943","name":"HD 76943","class":"f3v_g5v_yellow_white_main_sequence_star","category":"star","object_type":"F3V+G5V yellow-white main-sequence star","mag":3.96,"mag_band":"V","abs_mag":2.93,"abs_mag_band":"V","distance_ly":52.411372960814376,"distance_method":"parallax","ra_deg":135.160275,"dec_deg":41.782911,"epoch_ra_deg":135.594477,"epoch_dec_deg":41.67655,"epoch_moved_arcsec":14.252,"pm_ra_mas_yr":-487.67,"pm_dec_mas_yr":-219.29,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Lynx","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-76943","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"09006+4147","companions":[{"measured":2017,"magnitude":6.48,"components":"AB","discoverer_code":"KUI  37","separation_arcsec":0.5,"position_angle_deg":144},{"measured":2004,"magnitude":10.36,"components":"AB,C","discoverer_code":"STT 566","separation_arcsec":99.7,"position_angle_deg":184},{"measured":2013,"magnitude":12.08,"components":"AB,D","discoverer_code":"BUP 122","separation_arcsec":173,"position_angle_deg":104},{"measured":2012,"magnitude":11.19,"components":"AB,E","discoverer_code":"STT 566","separation_arcsec":260.4,"position_angle_deg":101}],"spectral_type":"F3V+G5V","uncertainties":{"metallicity_fe_h":[0.275,0.275]},"color_index_bv":0.463,"luminosity_solar":5.861381645140285,"metallicity_fe_h":-0.025,"radial_velocity_km_s":27.1,"spectral_type_source":"SIMBAD (1976AJ.....81..245E, quality C)","surface_gravity_log_g":4.05,"surface_temperature_k":6590,"metallicity_fe_h_source":"Median of 2 spectroscopic determinations in 3 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":-487.67,"proper_motion_dec_mas_yr":-219.29,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Gliese","designation":"Gl 332A"},{"catalog":"HD","designation":"HD 76943"},{"catalog":"HIP","designation":"HIP 44248"},{"catalog":"HR","designation":"HR 3579"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-27T19:16:43.430Z","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."}