{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T15:03:08.426Z","years_from_j2000":26.683,"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":"wasp-140-b","name":"WASP-140 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":383.55337706733593,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":60.3855387,"dec_deg":-20.4509991,"epoch_ra_deg":60.681754,"epoch_dec_deg":-20.375413,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-140","semi_major_axis_km":4832011.22361,"periapsis_km":null,"mass_kg":4.6314472367451266e+27,"mass_msun":0.00232922,"constellation":"Eridanus","discovered":"2016","featured":false,"url":"https://spacecatalog.org/object/wasp-140-b","radius_km":90794.839755769,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-140","host_v_mag":11.118,"eccentricity":0.047,"uncertainties":{"mass_kg":[1.328693879394094e+26,1.328693879394094e+26],"radius_km":[4289.519975404,4289.519975404],"distance_ly":[1.9373688836374559,1.9601998300776278],"eccentricity":[0.0035,0.0035],"host_mass_solar":[0.04,0.04],"inclination_deg":[0.06,0.06],"host_radius_solar":[0.04,0.04],"host_temperature_k":[100,100],"semi_major_axis_km":[74798.93535,74798.93535],"orbital_period_days":[2.5e-7,2.5e-7],"argument_of_periastron_deg":[8,8]},"host_mass_solar":0.9,"inclination_deg":84.3,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.87,"planets_in_system":1,"discovery_facility":"SuperWASP-South","host_spectral_type":"K0","host_temperature_k":5300,"orbital_period_days":2.23598448,"transit_midpoint_bjd":2456912.35261,"equilibrium_temperature_k":1270,"argument_of_periastron_deg":356},"designations":[{"catalog":"Exoplanet","designation":"WASP-140 b"},{"catalog":"Host star","designation":"WASP-140"}],"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."}