{"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":"2026-09-08T05:21:51.083Z","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":"kurhah","name":"Kurhah","class":"am_f7_8v_white_star","category":"star","object_type":"Am+F7/8V white star","mag":4.26,"mag_band":"V","abs_mag":1.904,"abs_mag_band":"V","distance_ly":96.52467535975934,"distance_method":"parallax","ra_deg":330.947025,"dec_deg":64.627971,"epoch_ra_deg":331.137578,"epoch_dec_deg":64.758407,"epoch_moved_arcsec":6.199,"pm_ra_mas_yr":214.46,"pm_dec_mas_yr":89.29,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Cepheus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/kurhah","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"22038+6438","companions":[{"measured":2020,"magnitude":6.3,"components":"Aa,Ab","discoverer_code":"MCA  69","separation_arcsec":0.1,"position_angle_deg":102},{"measured":2024,"magnitude":6.4,"components":"AB","discoverer_code":"STF2863","separation_arcsec":8.1,"position_angle_deg":275},{"measured":2014,"magnitude":12.6,"components":"AC","discoverer_code":"STF2863","separation_arcsec":112.7,"position_angle_deg":208}],"spectral_type":"Am+F7/8V","color_index_bv":0.379,"luminosity_solar":15.079953418017894,"radial_velocity_km_s":-6,"spectral_type_source":"SIMBAD (1997A&AS..123..135G, quality C)","proper_motion_ra_mas_yr":214.46,"proper_motion_dec_mas_yr":89.29},"designations":[{"catalog":"Bayer/Flamsteed","designation":"17 Xi Cep"},{"catalog":"Common name","designation":"Kurhah"},{"catalog":"HD","designation":"HD 209790"},{"catalog":"HIP","designation":"HIP 108917"},{"catalog":"HR","designation":"HR 8417"}],"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."}