{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T14:00:02.968Z","years_from_j2000":26.683,"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-34-b","name":"WASP-34 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":430.8395287087094,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":165.3993679,"dec_deg":-23.8609457,"epoch_ra_deg":165.726085,"epoch_dec_deg":-24.005229,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WASP-34","semi_major_axis_km":7838928.424679999,"periapsis_km":null,"mass_kg":1.0629551035152752e+27,"mass_msun":0.000534575,"constellation":"Crater","discovered":"2010","featured":false,"url":"https://spacecatalog.org/object/wasp-34-b","radius_km":71492.1229,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WASP-34","host_v_mag":10.285,"eccentricity":0.04,"uncertainties":{"mass_kg":[3.226827992814228e+26,3.226827992814228e+26],"radius_km":[5719.369832,5719.369832],"distance_ly":[2.7592829554836493,2.795160157032491],"eccentricity":[0.01,0.01],"host_mass_solar":[0.45,0.45],"inclination_deg":[0.2,0.2],"host_radius_solar":[0.08,0.08],"host_temperature_k":[100,100],"semi_major_axis_km":[59839.14828,59839.14828],"orbital_period_days":[0.000005,0.000005],"argument_of_periastron_deg":[18.6,23.2]},"host_mass_solar":0.96,"inclination_deg":85.2,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.91,"planets_in_system":1,"discovery_facility":"SuperWASP","host_temperature_k":5700,"orbital_period_days":4.31768,"periastron_epoch_bjd":2454647.55434,"transit_midpoint_bjd":2458654.3645,"equilibrium_temperature_k":1250,"argument_of_periastron_deg":319.8},"designations":[{"catalog":"Exoplanet","designation":"WASP-34 b"},{"catalog":"Host star","designation":"WASP-34"}],"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."}