{"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":"2026-09-08T21:56:46.855Z","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-71-b","name":"HATS-71 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":457.35278065330345,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":15.5518893,"dec_deg":-61.7561333,"epoch_ra_deg":15.825261,"epoch_dec_deg":-61.611477,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HATS-71","semi_major_axis_km":5602440.257714999,"periapsis_km":null,"mass_kg":7.023096219654495e+26,"mass_msun":0.000353202,"constellation":"Tucana","discovered":"2020","featured":false,"url":"https://spacecatalog.org/object/hats-71-b","radius_km":73207.93384960001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HATS-71","host_v_mag":16.437,"eccentricity":0,"uncertainties":{"mass_kg":[4.555521872208322e+26,4.555521872208322e+26],"radius_km":[1286.8582122,1286.8582122],"distance_ly":[2.788637029478156,2.8212526672498304],"host_mass_solar":[0.006,0.006],"inclination_deg":[0.13,0.13],"host_radius_solar":[0.006,0.006],"host_temperature_k":[10,10],"semi_major_axis_km":[22439.680604999998,22439.680604999998],"orbital_period_days":[0.000001,0.000001]},"host_mass_solar":0.4861,"inclination_deg":88.82,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.4783,"planets_in_system":1,"discovery_facility":"HATSouth","host_spectral_type":"M3 V","host_temperature_k":3405,"orbital_period_days":3.7955202,"transit_midpoint_bjd":2457858.80134,"equilibrium_temperature_k":586.8},"designations":[{"catalog":"Exoplanet","designation":"HATS-71 b"},{"catalog":"Host star","designation":"HATS-71"}],"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."}