{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-03T00:17:46.775Z","years_from_j2000":26.671,"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-195482","name":"HD 195482","class":"ka7ha9mf0_white_star","category":"star","object_type":"kA7hA9mF0 white star","mag":7.28,"mag_band":"V","abs_mag":3.39,"abs_mag_band":"V","distance_ly":195.65468786472005,"distance_method":"parallax","ra_deg":307.79972999999995,"dec_deg":11.259308,"epoch_ra_deg":308.119839,"epoch_dec_deg":11.349266,"epoch_moved_arcsec":0.69,"pm_ra_mas_yr":-10.41,"pm_dec_mas_yr":-23.69,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Delphinus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-195482","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"20312+1116","companions":[{"measured":2016,"magnitude":8,"components":"BC","discoverer_code":"DA    1","separation_arcsec":0.3,"position_angle_deg":184},{"measured":2016,"magnitude":null,"components":"Aa,Ab","discoverer_code":"CHR  99","separation_arcsec":0.4,"position_angle_deg":142},{"measured":2020,"magnitude":7.39,"components":"A,BC","discoverer_code":"STF2690","separation_arcsec":17.8,"position_angle_deg":255},{"measured":2016,"magnitude":12.1,"components":"AD","discoverer_code":"HJ  269","separation_arcsec":23,"position_angle_deg":108}],"spectral_type":"kA7hA9mF0","color_index_bv":0.287,"luminosity_solar":3.8370724549227866,"radial_velocity_km_s":2,"spectral_type_source":"SIMBAD (1985ApJS...59...95A, quality D)","proper_motion_ra_mas_yr":-10.41,"proper_motion_dec_mas_yr":-23.69},"designations":[{"catalog":"HD","designation":"HD 195482"},{"catalog":"HIP","designation":"HIP 101233"}],"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."}