{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-07T16:23:00.124Z","years_from_j2000":26.684,"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-46-b","name":"WASP-46 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1224.0975012087097,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":318.7370122,"dec_deg":-55.8718634,"epoch_ra_deg":319.228374,"epoch_dec_deg":-55.760513,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-46","semi_major_axis_km":3493110.2808449995,"periapsis_km":null,"mass_kg":3.625436156632456e+27,"mass_msun":0.00182328,"constellation":"Indus","discovered":"2011","featured":false,"url":"https://spacecatalog.org/object/wasp-46-b","radius_km":83931.7522846,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-46","host_v_mag":13.043,"eccentricity":0,"uncertainties":{"mass_kg":[2.4675743474461742e+26,2.4675743474461742e+26],"radius_km":[2645.2085473,2645.2085473],"distance_ly":[14.220418068450014,14.553097573721091],"host_mass_solar":[0.076,0.076],"inclination_deg":[0.17,0.17],"host_radius_solar":[0.027,0.027],"semi_major_axis_km":[107710.466904,107710.466904],"orbital_period_days":[9.3e-7,9.3e-7]},"host_mass_solar":0.828,"inclination_deg":82.8,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.858,"planets_in_system":1,"discovery_facility":"SuperWASP","host_spectral_type":"G6 V","host_temperature_k":5600,"orbital_period_days":1.43036763,"transit_midpoint_bjd":2455392.31659,"equilibrium_temperature_k":1636},"designations":[{"catalog":"Exoplanet","designation":"WASP-46 b"},{"catalog":"Host star","designation":"WASP-46"}],"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."}