{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-07T17:00:42.070Z","years_from_j2000":26.684,"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-222439","name":"19 κ And","class":"b9ivn_blue_white_subgiant","category":"star","object_type":"B9IVn blue-white subgiant","mag":4.15,"mag_band":"V","abs_mag":0.586,"abs_mag_band":"V","distance_ly":168.38214387280138,"distance_method":"parallax","ra_deg":355.102035,"dec_deg":44.333932,"epoch_ra_deg":355.432805,"epoch_dec_deg":44.482675,"epoch_moved_arcsec":2.228,"pm_ra_mas_yr":81.33,"pm_dec_mas_yr":-18.96,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Andromeda","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-222439","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"23404+4420","companions":[{"measured":2016,"magnitude":14.6,"components":"Aa,Ab","discoverer_code":"CSN   1","separation_arcsec":1,"position_angle_deg":51},{"measured":2002,"magnitude":11.3,"components":"AB","discoverer_code":"HJ 1898","separation_arcsec":47.4,"position_angle_deg":202},{"measured":2012,"magnitude":11.3,"components":"AC","discoverer_code":"HJ 1898","separation_arcsec":115.3,"position_angle_deg":293}],"spectral_type":"B9IVn","color_index_bv":-0.071,"luminosity_solar":50.76916258882487,"radial_velocity_km_s":-9,"spectral_type_source":"SIMBAD (1994AJ....107.1556G, quality C)","proper_motion_ra_mas_yr":81.33,"proper_motion_dec_mas_yr":-18.96},"designations":[{"catalog":"Bayer/Flamsteed","designation":"19 Kappa And"},{"catalog":"Exoplanet host","designation":"κ And"},{"catalog":"HD","designation":"HD 222439"},{"catalog":"HIP","designation":"HIP 116805"},{"catalog":"HR","designation":"HR 8976"}],"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."}