{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T06:26:46.185Z","years_from_j2000":26.682,"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-36-b","name":"HATS-36 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":2793.3206350621685,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":291.4787013,"dec_deg":-23.2028183,"epoch_ra_deg":291.882814,"epoch_dec_deg":-23.149696,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HATS-36","semi_major_axis_km":7823968.63761,"periapsis_km":null,"mass_kg":6.104399308759152e+27,"mass_msun":0.00306999,"constellation":"Sagittarius","discovered":"2018","featured":false,"url":"https://spacecatalog.org/object/hats-36-b","radius_km":82405.05200000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HATS-36","host_v_mag":14.364,"eccentricity":0.105,"uncertainties":{"mass_kg":[1.176843150320483e+26,1.176843150320483e+26],"radius_km":[2423.6780000000003,2423.6780000000003],"distance_ly":[67.93511191462049,71.34344606176045],"eccentricity":[0.028,0.028],"host_mass_solar":[0.04,0.04],"inclination_deg":[0.23,0.23],"host_radius_solar":[0.03,0.03],"host_temperature_k":[83,83],"semi_major_axis_km":[89758.72241999999,89758.72241999999],"orbital_period_days":[0.000033,0.000033]},"host_mass_solar":1.1,"inclination_deg":87.61,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.1,"planets_in_system":1,"discovery_facility":"HATSouth","host_spectral_type":"G0 V","host_temperature_k":5950,"orbital_period_days":4.175186,"transit_midpoint_bjd":2457314.4631,"equilibrium_temperature_k":1203},"designations":[{"catalog":"Exoplanet","designation":"HATS-36 b"},{"catalog":"Host star","designation":"HATS-36"}],"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."}