{"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":"2026-09-08T05:32:46.203Z","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-56-b","name":"WASP-56 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1047.2359438280284,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":183.3660401,"dec_deg":23.055687,"epoch_ra_deg":183.70739,"epoch_dec_deg":22.906237,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-56","semi_major_axis_km":8398424.461098,"periapsis_km":null,"mass_kg":8.541603510390603e+26,"mass_msun":0.00042957,"constellation":"Coma Berenices","discovered":"2012","featured":false,"url":"https://spacecatalog.org/object/wasp-56-b","radius_km":67202.595526,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-56","host_v_mag":12.091,"eccentricity":0,"uncertainties":{"mass_kg":[1.7083207020781206e+26,1.7083207020781206e+26],"radius_km":[6434.291061,6434.291061],"distance_ly":[17.051455427031346,17.612444396704145],"host_mass_solar":[0.21,0.21],"inclination_deg":[0.15,0.15],"host_radius_solar":[0.09,0.09],"host_temperature_k":[100,100],"semi_major_axis_km":[61335.126986999996,59839.14828],"orbital_period_days":[0.000003,0.000003]},"host_mass_solar":0.71,"inclination_deg":88.5,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.96,"planets_in_system":1,"discovery_facility":"SuperWASP","host_spectral_type":"G6","host_temperature_k":5600,"orbital_period_days":4.6171,"transit_midpoint_bjd":2455841.60939,"equilibrium_temperature_k":1216},"designations":[{"catalog":"Exoplanet","designation":"WASP-56 b"},{"catalog":"Host star","designation":"WASP-56"}],"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."}