{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T09:25:08.191Z","years_from_j2000":26.68,"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-19-b","name":"WASP-19 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":875.1591005084517,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":148.4167672,"dec_deg":-45.6591078,"epoch_ra_deg":148.678934,"epoch_dec_deg":-45.785494,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-19","semi_major_axis_km":2471356.8239639997,"periapsis_km":null,"mass_kg":2.1904357881312e+27,"mass_msun":0.0011016,"constellation":"Vela","discovered":"2009","featured":false,"url":"https://spacecatalog.org/object/wasp-19-b","radius_km":101161.17971758901,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-19","host_v_mag":12.248,"eccentricity":0.0126,"uncertainties":{"mass_kg":[1.5184996798053766e+26,1.4805371880491288e+26],"radius_km":[3431.6159675669996,3145.6479862150004],"distance_ly":[5.538135293630303,5.609889696727986],"eccentricity":[0.0089,0.014],"host_mass_solar":[0.095,0.091],"inclination_deg":[0.37,0.34],"host_radius_solar":[0.034,0.031],"host_temperature_k":[65,66],"semi_major_axis_km":[83774.80759199998,74798.93535],"orbital_period_days":[8.2e-7,7.5e-7],"argument_of_periastron_deg":[190,89]},"host_mass_solar":0.965,"inclination_deg":79.08,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.006,"planets_in_system":1,"discovery_facility":"SuperWASP","host_spectral_type":"G8 V","host_temperature_k":5616,"orbital_period_days":0.78883852,"periastron_epoch_bjd":2455721.5508,"transit_midpoint_bjd":2456402.7128,"equilibrium_temperature_k":2113,"argument_of_periastron_deg":51},"designations":[{"catalog":"Exoplanet","designation":"WASP-19 b"},{"catalog":"Host star","designation":"WASP-19"}],"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."}