{"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":"2026-08-31T16:52:02.900Z","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":"hd-219829","name":"HD 219829","class":"k1v_orange_dwarf","category":"star","object_type":"K1V orange dwarf","mag":8.02,"mag_band":"V","abs_mag":5.491,"abs_mag_band":"V","distance_ly":104.53735909112658,"distance_method":"parallax","ra_deg":349.72683,"dec_deg":5.405502,"epoch_ra_deg":350.071307,"epoch_dec_deg":5.551526,"epoch_moved_arcsec":11.885,"pm_ra_mas_yr":435.35,"pm_dec_mas_yr":-95.64,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Pisces","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-219829","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"23189+0524","companions":[{"measured":2025,"magnitude":9.39,"components":"AB","discoverer_code":"BU   80","separation_arcsec":1,"position_angle_deg":264},{"measured":2014,"magnitude":11.27,"components":"AC","discoverer_code":"BU   80","separation_arcsec":119.6,"position_angle_deg":339},{"measured":2014,"magnitude":9.99,"components":"AD","discoverer_code":"BU   80","separation_arcsec":225.4,"position_angle_deg":321},{"measured":2014,"magnitude":10.4,"components":"AE","discoverer_code":"BU   80","separation_arcsec":249.3,"position_angle_deg":292}],"spectral_type":"K1V","color_index_bv":0.82,"luminosity_solar":0.5541151189716866,"radial_velocity_km_s":-13.2,"spectral_type_source":"SIMBAD (1999MSS...C05....0H, quality C)","proper_motion_ra_mas_yr":435.35,"proper_motion_dec_mas_yr":-95.64},"designations":[{"catalog":"HD","designation":"HD 219829"},{"catalog":"HIP","designation":"HIP 115112"}],"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."}