{"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":"2026-09-08T02:53:53.601Z","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-22-b","name":"WASP-22 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1036.0422569447899,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":52.8180374,"dec_deg":-23.8197924,"epoch_ra_deg":53.110329,"epoch_dec_deg":-23.727849,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-22","semi_major_axis_km":7031099.9229,"periapsis_km":null,"mass_kg":1.2717498559914899e+27,"mass_msun":0.000639581,"constellation":"Eridanus","discovered":"2010","featured":false,"url":"https://spacecatalog.org/object/wasp-22-b","radius_km":87935.311167,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-22","host_v_mag":11.99,"eccentricity":0.02,"uncertainties":{"mass_kg":[3.606454815498255e+26,3.606454815498255e+26],"radius_km":[10008.897206000001,10008.897206000001],"distance_ly":[17.765737894231012,18.388696575669993],"eccentricity":[0.01,0.01],"host_mass_solar":[0.63,0.63],"inclination_deg":[0.5,0.5],"host_radius_solar":[0.13,0.13],"host_temperature_k":[100,100],"semi_major_axis_km":[55351.212158999995,53855.233452],"orbital_period_days":[0.00001,0.00001],"argument_of_periastron_deg":[78,51]},"host_mass_solar":1.46,"inclination_deg":89.2,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.24,"planets_in_system":1,"discovery_facility":"SuperWASP","host_spectral_type":"G1 V","host_temperature_k":6000,"orbital_period_days":3.53269,"transit_midpoint_bjd":2456850.43601,"equilibrium_temperature_k":1502,"argument_of_periastron_deg":27},"designations":[{"catalog":"Exoplanet","designation":"WASP-22 b"},{"catalog":"Host star","designation":"WASP-22"}],"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."}