{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T07:35:17.351Z","years_from_j2000":26.68,"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-193069","name":"HD 193069","class":"g3_5v_yellow_main_sequence_star","category":"star","object_type":"G3/5V yellow main-sequence star","mag":10,"mag_band":"V","abs_mag":5.037,"abs_mag_band":"V","distance_ly":320.70434770683033,"distance_method":"parallax","ra_deg":304.809885,"dec_deg":-26.167731,"epoch_ra_deg":305.215461,"epoch_dec_deg":-26.084011,"epoch_moved_arcsec":2.265,"pm_ra_mas_yr":79.93,"pm_dec_mas_yr":-28.61,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Capricornus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-193069","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"20192-2610","age_years":820183900,"companions":[{"measured":2016,"magnitude":11.26,"components":"AB","discoverer_code":"RST1067","separation_arcsec":5,"position_angle_deg":278}],"mass_solar":0.998,"radius_solar":0.895,"spectral_type":"G3/5V","color_index_bv":0.72,"luminosity_solar":0.8417827076608124,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1982MSS...C03....0H, quality D)","surface_gravity_log_g":4.466,"surface_temperature_k":5653,"proper_motion_ra_mas_yr":79.93,"proper_motion_dec_mas_yr":-28.61,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.7401},"designations":[{"catalog":"HD","designation":"HD 193069"},{"catalog":"HIP","designation":"HIP 100182"}],"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."}