{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-04T19:52:44.980Z","years_from_j2000":26.676,"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-75-b","name":"WASP-75 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":958.9030120510027,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":342.3858995,"dec_deg":-10.6754686,"epoch_ra_deg":342.738813,"epoch_dec_deg":-10.533507,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-75","semi_major_axis_km":5609920.151249999,"periapsis_km":null,"mass_kg":2.0308954051211364e+27,"mass_msun":0.00102137,"constellation":"Aquarius","discovered":"2013","featured":false,"url":"https://spacecatalog.org/object/wasp-75-b","radius_km":90792.2535,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-75","host_v_mag":11.591,"eccentricity":0,"uncertainties":{"mass_kg":[9.489774741920503e+25,9.489774741920503e+25],"radius_km":[3431.4178000000006,3431.4178000000006],"distance_ly":[13.979062348939621,14.39001938486272],"host_mass_solar":[0.07,0.07],"inclination_deg":[0.2,0.3],"host_radius_solar":[0.04,0.04],"host_temperature_k":[100,100],"semi_major_axis_km":[119678.29656,104718.50949],"orbital_period_days":[0.000003,0.000003]},"host_mass_solar":1.14,"inclination_deg":82,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":1.26,"planets_in_system":1,"discovery_facility":"SuperWASP","host_spectral_type":"F9","host_temperature_k":6100,"orbital_period_days":2.484193,"transit_midpoint_bjd":2456016.2669,"equilibrium_temperature_k":1710},"designations":[{"catalog":"Exoplanet","designation":"WASP-75 b"},{"catalog":"Host star","designation":"WASP-75"}],"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."}