{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T17:46:27.325Z","years_from_j2000":26.681,"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":"kap-and-b","name":"κ And b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":163.13591853722755,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":355.1025974,"dec_deg":44.3338511,"epoch_ra_deg":355.432489,"epoch_dec_deg":44.482715,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"κ And","semi_major_axis_km":8227882888.499999,"periapsis_km":null,"mass_kg":3.2837555575791263e+28,"mass_msun":0.0165145,"constellation":"Andromeda","discovered":"2012","featured":false,"url":"https://spacecatalog.org/object/kap-and-b","radius_km":101518.639694279,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"κ And","host_v_mag":4.13791,"uncertainties":{"mass_kg":[3.4166242795620973e+27,3.4166242795620973e+27],"radius_km":[4289.519975404,4289.519975404],"distance_ly":[2.763849144771684,2.859086807064973],"host_mass_solar":[0.109,0.1],"host_radius_solar":[0.018,0.032],"host_temperature_k":[44,412],"semi_major_axis_km":[299195741.4,299195741.4]},"host_mass_solar":2.768,"stars_in_system":1,"discovery_method":"Imaging","host_radius_solar":2.109,"planets_in_system":1,"discovery_facility":"Subaru Telescope","host_spectral_type":"B9 IVn","host_temperature_k":11327,"equilibrium_temperature_k":1791},"designations":[{"catalog":"Exoplanet","designation":"kap And b"},{"catalog":"Host star","designation":"kap And"}],"source":{"id":"exoplanet_archive","name":"NASA Exoplanet Archive (Planetary Systems Composite Parameters)","url":"https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PSCompPars","license":"Public domain (NASA)"},"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."}