{"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":"2026-09-06T12:07:30.760Z","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-100-b","name":"WASP-100 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1188.5497176013619,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":68.9598159,"dec_deg":-64.027039,"epoch_ra_deg":69.019465,"epoch_dec_deg":-63.971277,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-100","semi_major_axis_km":6842606.605818,"periapsis_km":null,"mass_kg":2.391648982909369e+27,"mass_msun":0.00120279,"constellation":"Reticulum","discovered":"2014","featured":false,"url":"https://spacecatalog.org/object/wasp-100-b","radius_km":95084.523457,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-100","host_v_mag":10.798,"eccentricity":0,"uncertainties":{"mass_kg":[8.541603510390603e+26,8.541603510390603e+26],"radius_km":[10008.897206000001,10008.897206000001],"distance_ly":[8.835576272346579,8.966038823433276],"host_mass_solar":[0.42,0.42],"inclination_deg":[2.15,2.15],"host_radius_solar":[0.16,0.16],"host_temperature_k":[120,120],"semi_major_axis_km":[149597.8707,139126.01975099999],"orbital_period_days":[0.000008,0.000008]},"host_mass_solar":0.77,"inclination_deg":82.6,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":1.57,"planets_in_system":1,"discovery_facility":"SuperWASP","host_spectral_type":"F2","host_temperature_k":6900,"orbital_period_days":2.84938,"transit_midpoint_bjd":2441361.4376,"equilibrium_temperature_k":2099},"designations":[{"catalog":"Exoplanet","designation":"WASP-100 b"},{"catalog":"Host star","designation":"WASP-100"}],"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."}