{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T16:13:34.601Z","years_from_j2000":26.681,"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-126-c","name":"WASP-126 c","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":706.2133584149559,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":63.374706,"dec_deg":-69.2265926,"epoch_ra_deg":63.369807,"epoch_dec_deg":-69.157509,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-126","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":3.834131771122066e+26,"mass_msun":0.000192824,"constellation":"Hydrus","discovered":"2019","featured":false,"url":"https://spacecatalog.org/object/wasp-126-c","radius_km":59826.57800000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-126","host_v_mag":10.994,"uncertainties":{"mass_kg":[1.4691532954766793e+26,1.4691532954766793e+26],"distance_ly":[3.026731185211379,3.0528236954287187],"orbital_period_days":[0.17,0.17],"argument_of_periastron_deg":[33.8,33.8]},"host_mass_solar":1.12,"inclination_deg":85.5,"stars_in_system":1,"discovery_method":"Transit Timing Variations","host_radius_solar":1.27,"planets_in_system":2,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"G2","host_temperature_k":5800,"orbital_period_days":7.63,"eccentricity_upper_limit":0.05,"argument_of_periastron_deg":183.2},"designations":[{"catalog":"Exoplanet","designation":"WASP-126 c"},{"catalog":"Host star","designation":"WASP-126"}],"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."}