{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T08:03:33.219Z","years_from_j2000":26.666,"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":"keid","name":"Keid","class":"k0v_orange_dwarf","category":"star","object_type":"K0V orange dwarf","mag":4.43,"mag_band":"V","abs_mag":5.942,"abs_mag_band":"V","distance_ly":16.257264647291073,"distance_method":"parallax","ra_deg":63.818055,"dec_deg":-7.652871,"epoch_ra_deg":64.12741,"epoch_dec_deg":-7.610518,"epoch_moved_arcsec":109.006,"pm_ra_mas_yr":-2239.33,"pm_dec_mas_yr":-3419.86,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Eridanus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/keid","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"04153-0739","companions":[{"measured":2024,"magnitude":11.17,"components":"AC","discoverer_code":"STF 518","separation_arcsec":77.9,"position_angle_deg":98},{"measured":2024,"magnitude":9.31,"components":"A,BC","discoverer_code":"STF 518","separation_arcsec":83.2,"position_angle_deg":102},{"measured":2016,"magnitude":12.62,"components":"AD","discoverer_code":"STF 518","separation_arcsec":551,"position_angle_deg":37},{"measured":1998,"magnitude":12.99,"components":"AE","discoverer_code":"STF 518","separation_arcsec":639,"position_angle_deg":25}],"spectral_type":"K0V","uncertainties":{"metallicity_fe_h":[0.096,0.096]},"color_index_bv":0.82,"luminosity_solar":0.3657631930094519,"metallicity_fe_h":-0.285,"radial_velocity_km_s":-42.7,"spectral_type_source":"SIMBAD (1989ApJS...71..245K, quality B)","surface_gravity_log_g":4.55,"surface_temperature_k":5153,"metallicity_fe_h_source":"Median of 24 spectroscopic determinations in 30 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":-2239.33,"proper_motion_dec_mas_yr":-3419.86,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"40 Omicron2 Eri"},{"catalog":"Common name","designation":"Keid"},{"catalog":"Gliese","designation":"Gl 166A"},{"catalog":"HD","designation":"HD 26965"},{"catalog":"HIP","designation":"HIP 19849"},{"catalog":"HR","designation":"HR 1325"}],"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."}