{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.687","julian_year":2026.687,"time":"2026-09-08T22:44:56.242Z","years_from_j2000":26.687,"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":"hats-43-b","name":"HATS-43 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1181.576494245778,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":80.5382418,"dec_deg":-30.9708179,"epoch_ra_deg":80.794224,"epoch_dec_deg":-30.944266,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HATS-43","semi_major_axis_km":7396118.727407999,"periapsis_km":null,"mass_kg":4.95413003602655e+26,"mass_msun":0.00024915,"constellation":"Columba","discovered":"2018","featured":false,"url":"https://spacecatalog.org/object/hats-43-b","radius_km":84360.70502200001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HATS-43","host_v_mag":13.562,"eccentricity":0.173,"uncertainties":{"mass_kg":[1.0249924212468723e+26,1.0249924212468723e+26],"radius_km":[3574.606145,3574.606145],"distance_ly":[7.279810350637714,7.367872572621233],"eccentricity":[0.089,0.089],"host_mass_solar":[0.023,0.023],"inclination_deg":[0.41,0.29],"host_radius_solar":[0.032,0.032],"host_temperature_k":[61,61],"semi_major_axis_km":[68815.02052199999,68815.02052199999],"orbital_period_days":[0.0000059,0.0000059],"argument_of_periastron_deg":[120,120]},"host_mass_solar":0.837,"inclination_deg":89.24,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.812,"planets_in_system":1,"discovery_facility":"HATSouth","host_temperature_k":5099,"orbital_period_days":4.3888497,"transit_midpoint_bjd":2457636.08946,"equilibrium_temperature_k":1003,"argument_of_periastron_deg":330},"designations":[{"catalog":"Exoplanet","designation":"HATS-43 b"},{"catalog":"Host star","designation":"HATS-43"}],"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."}