{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T07:08:26.792Z","years_from_j2000":26.685,"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-179343","name":"HD 179343","class":"b7_8_e_sh_blue_white_star","category":"star","object_type":"B7/8(e)_sh blue-white star","mag":6.94,"mag_band":"V","abs_mag":-2.558,"abs_mag_band":"V","distance_ly":2588.5427009999557,"distance_method":"parallax","ra_deg":288.01365,"dec_deg":2.622591,"epoch_ra_deg":288.351315,"epoch_dec_deg":2.666998,"epoch_moved_arcsec":0.292,"pm_ra_mas_yr":-3.3,"pm_dec_mas_yr":-10.44,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Aquila","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-179343","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"19121+0237","companions":[{"measured":2006,"magnitude":11.24,"components":"AB,C","discoverer_code":"BU 1204","separation_arcsec":12.5,"position_angle_deg":195},{"measured":2006,"magnitude":13.9,"components":"AB,D","discoverer_code":"BU 1204","separation_arcsec":20.4,"position_angle_deg":158},{"measured":2006,"magnitude":13.1,"components":"AB,E","discoverer_code":"BU 1204","separation_arcsec":26.5,"position_angle_deg":317},{"measured":2006,"magnitude":13.1,"components":"AB,F","discoverer_code":"BU 1204","separation_arcsec":26.8,"position_angle_deg":292},{"measured":2024,"magnitude":11.12,"components":"AB,G","discoverer_code":"STF2476","separation_arcsec":29.4,"position_angle_deg":212}],"spectral_type":"B7/8(e)_sh","color_index_bv":0.102,"luminosity_solar":918.7556016660627,"radial_velocity_km_s":-10.7,"spectral_type_source":"SIMBAD (1999A&AS..137..147S, quality D)","proper_motion_ra_mas_yr":-3.3,"proper_motion_dec_mas_yr":-10.44},"designations":[{"catalog":"HD","designation":"HD 179343"},{"catalog":"HIP","designation":"HIP 94331"}],"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."}