{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.664","julian_year":2026.664,"time":"2026-08-31T12:01:03.569Z","years_from_j2000":26.664,"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":"tarazed","name":"Tarazed","class":"k3ii_orange_bright_giant","category":"star","object_type":"K3II orange bright giant","mag":2.72,"mag_band":"V","abs_mag":-2.695,"abs_mag_band":"V","distance_ly":394.86252330828626,"distance_method":"parallax","ra_deg":296.56491000000005,"dec_deg":10.613261,"epoch_ra_deg":296.883707,"epoch_dec_deg":10.678372,"epoch_moved_arcsec":0.427,"pm_ra_mas_yr":15.72,"pm_dec_mas_yr":-3.08,"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/tarazed","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"19463+1037","companions":[{"measured":2020,"magnitude":11.4,"components":"AD","discoverer_code":"DAL  44","separation_arcsec":54.3,"position_angle_deg":269},{"measured":2012,"magnitude":10.9,"components":"AC","discoverer_code":"DAL  44","separation_arcsec":65.7,"position_angle_deg":329},{"measured":2012,"magnitude":12,"components":"AE","discoverer_code":"SMR  36","separation_arcsec":119,"position_angle_deg":28},{"measured":2012,"magnitude":12.9,"components":"AF","discoverer_code":"SMR  36","separation_arcsec":119.7,"position_angle_deg":61},{"measured":2012,"magnitude":12.15,"components":"AB","discoverer_code":"BUP 198","separation_arcsec":134.1,"position_angle_deg":257}],"spectral_type":"K3II","uncertainties":{"metallicity_fe_h":[0.17,0.17]},"color_index_bv":1.507,"luminosity_solar":1042.3174293933046,"metallicity_fe_h":0,"radial_velocity_km_s":-2,"spectral_type_source":"SIMBAD (1989ApJS...71..245K, quality B)","surface_gravity_log_g":1.44,"surface_temperature_k":4152,"metallicity_fe_h_source":"Median of 3 spectroscopic determinations in 5 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":15.72,"proper_motion_dec_mas_yr":-3.08,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"50 Gamma Aql"},{"catalog":"Common name","designation":"Tarazed"},{"catalog":"HD","designation":"HD 186791"},{"catalog":"HIP","designation":"HIP 97278"},{"catalog":"HR","designation":"HR 7525"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}