{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.678","julian_year":2026.678,"time":"2026-09-05T16:05:34.836Z","years_from_j2000":26.678,"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":"hat-p-60-b","name":"HAT-P-60 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":760.661904110989,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":28.2825719,"dec_deg":52.0539209,"epoch_ra_deg":28.71587,"epoch_dec_deg":52.186431,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HAT-P-60","semi_major_axis_km":9390258.343839,"periapsis_km":null,"mass_kg":1.089523520272302e+27,"mass_msun":0.000547937,"constellation":"Perseus","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/hat-p-60-b","radius_km":116603.45166731201,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HAT-P-60","host_v_mag":9.727,"uncertainties":{"mass_kg":[7.212873481464405e+25,7.212873481464405e+25],"radius_km":[1715.808015674,1715.808015674],"distance_ly":[8.568128042618849,8.763821869248895],"host_mass_solar":[0.012,0.012],"inclination_deg":[0.17,0.17],"host_radius_solar":[0.02,0.027],"host_temperature_k":[26,26],"semi_major_axis_km":[25431.638018999998,25431.638018999998],"orbital_period_days":[0.0000024,0.0000024]},"host_mass_solar":1.435,"inclination_deg":83.75,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":2.197,"planets_in_system":1,"discovery_facility":"HATNet","host_temperature_k":6212,"orbital_period_days":4.7947813,"transit_midpoint_bjd":2458360.94029,"eccentricity_upper_limit":0.25,"equilibrium_temperature_k":1772},"designations":[{"catalog":"Exoplanet","designation":"HAT-P-60 b"},{"catalog":"Host star","designation":"HAT-P-60"}],"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."}