{"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":"2026-09-07T08:09:13.462Z","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-136-b","name":"WASP-136 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":898.8445766582416,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":0.325761,"dec_deg":-8.9262512,"epoch_ra_deg":0.670165,"epoch_dec_deg":-8.776661,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-136","semi_major_axis_km":9888419.25327,"periapsis_km":null,"mass_kg":2.866168145632648e+27,"mass_msun":0.00144144,"constellation":"Cetus","discovered":"2016","featured":false,"url":"https://spacecatalog.org/object/wasp-136-b","radius_km":107237.99970400501,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-136","host_v_mag":9.974,"eccentricity":0,"uncertainties":{"mass_kg":[1.5184996798053766e+26,1.5184996798053766e+26],"radius_km":[10723.799938510001,10723.799938510001],"distance_ly":[14.546574446166757,15.0227627576332],"host_mass_solar":[0.07,0.07],"inclination_deg":[1.2,1.2],"host_radius_solar":[0.115251,0.115251],"host_temperature_k":[100,100],"semi_major_axis_km":[179517.44483999998,179517.44483999998],"orbital_period_days":[0.00000268524,0.00000268524]},"host_mass_solar":1.41,"inclination_deg":87.7,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":2.39014,"planets_in_system":1,"discovery_facility":"SuperWASP","host_spectral_type":"F","host_temperature_k":6250,"orbital_period_days":5.21536178778,"transit_midpoint_bjd":2456776.9055,"equilibrium_temperature_k":1630},"designations":[{"catalog":"Exoplanet","designation":"WASP-136 b"},{"catalog":"Host star","designation":"WASP-136"}],"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."}