{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T03:49:11.655Z","years_from_j2000":26.685,"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-145-a-b","name":"WASP-145 A b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":297.7775112916096,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":322.2537644,"dec_deg":-58.8361466,"epoch_ra_deg":322.751294,"epoch_dec_deg":-58.718869,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-145 A","semi_major_axis_km":3904504.42527,"periapsis_km":null,"mass_kg":1.6893393609439192e+27,"mass_msun":0.000849593,"constellation":"Indus","discovered":"2018","featured":false,"url":"https://spacecatalog.org/object/wasp-145-a-b","radius_km":64342.910610000006,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-145 A","host_v_mag":11.636,"eccentricity":0,"uncertainties":{"mass_kg":[7.592536453680536e+25,7.592536453680536e+25],"radius_km":[28596.84916,28596.84916],"distance_ly":[0.7837537756533345,0.7876676521859354],"host_mass_solar":[0.04,0.04],"inclination_deg":[1.3,1.3],"host_radius_solar":[0.07,0.07],"host_temperature_k":[150,150],"semi_major_axis_km":[74798.93535,74798.93535],"orbital_period_days":[8e-7,8e-7]},"host_mass_solar":0.76,"inclination_deg":83.3,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.68,"planets_in_system":1,"discovery_facility":"SuperWASP-South","host_spectral_type":"K2 V","host_temperature_k":4900,"orbital_period_days":1.7690381,"transit_midpoint_bjd":2456844.16526,"equilibrium_temperature_k":1200},"designations":[{"catalog":"Exoplanet","designation":"WASP-145 A b"},{"catalog":"Host star","designation":"WASP-145 A"}],"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."}