{"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":"2026-09-06T12:51:19.073Z","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-36-b","name":"WASP-36 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1260.0921190535296,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":131.5803897,"dec_deg":-8.0269855,"epoch_ra_deg":131.908548,"epoch_dec_deg":-8.124853,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-36","semi_major_axis_km":4004734.9986389996,"periapsis_km":null,"mass_kg":4.4814946417849363e+27,"mass_msun":0.00225381,"constellation":"Hydra","discovered":"2011","featured":false,"url":"https://spacecatalog.org/object/wasp-36-b","radius_km":94870.04708830001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-36","host_v_mag":12.836,"eccentricity":0,"uncertainties":{"mass_kg":[1.328693879394094e+26,1.328693879394094e+26],"radius_km":[1501.3345809,1501.3345809],"distance_ly":[16.708991230428765,17.15908703167787],"host_mass_solar":[0.034,0.034],"inclination_deg":[0.13,0.13],"host_radius_solar":[0.014,0.014],"host_temperature_k":[134,134],"semi_major_axis_km":[41887.40379599999,41887.40379599999],"orbital_period_days":[2.4e-7,2.4e-7]},"host_mass_solar":1.081,"inclination_deg":83.15,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.985,"planets_in_system":1,"discovery_facility":"SuperWASP","host_temperature_k":5959,"orbital_period_days":1.53736596,"transit_midpoint_bjd":2455569.83771,"equilibrium_temperature_k":1733},"designations":[{"catalog":"Exoplanet","designation":"WASP-36 b"},{"catalog":"Host star","designation":"WASP-36"}],"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."}