{"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":"2026-09-04T23:08:10.410Z","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-63-b","name":"WASP-63 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":948.0844050021385,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":94.3363562,"dec_deg":-38.3233826,"epoch_ra_deg":94.562491,"epoch_dec_deg":-38.332701,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-63","semi_major_axis_km":8586917.77818,"periapsis_km":null,"mass_kg":7.023096219654495e+26,"mass_msun":0.000353202,"constellation":"Columba","discovered":"2012","featured":false,"url":"https://spacecatalog.org/object/wasp-63-b","radius_km":100803.89328900001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-63","host_v_mag":11.155,"eccentricity":0,"uncertainties":{"mass_kg":[1.7083207020781206e+26,1.7083207020781206e+26],"radius_km":[10008.897206000001,10008.897206000001],"distance_ly":[6.549220064552208,6.63402072275856],"host_mass_solar":[0.42,0.42],"inclination_deg":[1.3,1.3],"host_radius_solar":[0.19,0.19],"host_temperature_k":[100,100],"semi_major_axis_km":[104718.50949,104718.50949],"orbital_period_days":[0.000006,0.000006]},"host_mass_solar":1.28,"inclination_deg":87.8,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.86,"planets_in_system":1,"discovery_facility":"SuperWASP","host_temperature_k":5550,"orbital_period_days":4.37808,"transit_midpoint_bjd":2458574.77102,"equilibrium_temperature_k":1469.91},"designations":[{"catalog":"Exoplanet","designation":"WASP-63 b"},{"catalog":"Host star","designation":"WASP-63"}],"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."}