{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-05T21:59:18.058Z","years_from_j2000":26.679,"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-45-b","name":"WASP-45 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":688.8292234826534,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":5.2377567,"dec_deg":-35.998465,"epoch_ra_deg":5.573376,"epoch_dec_deg":-35.84937,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-45","semi_major_axis_km":5928563.615840999,"periapsis_km":null,"mass_kg":1.8298012853370093e+27,"mass_msun":0.000920233,"constellation":"Sculptor","discovered":"2011","featured":false,"url":"https://spacecatalog.org/object/wasp-45-b","radius_km":67631.5482634,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-45","host_v_mag":11.801,"eccentricity":0,"uncertainties":{"mass_kg":[1.0629551035152751e+26,1.1009177857836777e+26],"radius_km":[3646.0982679000003,4146.5431282],"distance_ly":[5.665336280939833,5.759921630477689],"host_mass_solar":[0.07,0.076],"inclination_deg":[0.22,0.2],"host_radius_solar":[0.038,0.039],"host_temperature_k":[200,200],"semi_major_axis_km":[167549.61518399997,170541.57259799997],"orbital_period_days":[0.000003,0.000003]},"host_mass_solar":0.85,"inclination_deg":85.02,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.855,"planets_in_system":1,"discovery_facility":"SuperWASP","host_spectral_type":"K2 V","host_temperature_k":5150,"orbital_period_days":3.126089,"transit_midpoint_bjd":2458339.143039,"equilibrium_temperature_k":1153},"designations":[{"catalog":"Exoplanet","designation":"WASP-45 b"},{"catalog":"Host star","designation":"WASP-45"}],"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."}