{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T01:54:30.686Z","years_from_j2000":26.666,"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":"kepler-65-e","name":"Kepler-65 e","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":990.6282429115105,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":288.6887221,"dec_deg":41.1511076,"epoch_ra_deg":288.908296,"epoch_dec_deg":41.197073,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Kepler-65","semi_major_axis_km":127746222.58348465,"periapsis_km":null,"mass_kg":1.5527636456257587e+27,"mass_msun":0.000780907,"constellation":"Lyra","discovered":"2019","featured":false,"url":"https://spacecatalog.org/object/kepler-65-e","radius_km":88655.59000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Kepler-65","host_v_mag":10.922,"eccentricity":0.283,"uncertainties":{"mass_kg":[2.9860839338956895e+26,1.1944335735582758e+27],"distance_ly":[8.679021211042542,8.832314708569413],"eccentricity":[0.071,0.064],"host_mass_solar":[0.021,0.018],"inclination_deg":[25,27],"host_radius_solar":[0.027,0.032],"host_temperature_k":[43.86,44.35],"orbital_period_days":[1.3,1.5]},"host_mass_solar":1.248,"inclination_deg":127,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.437,"planets_in_system":4,"discovery_facility":"W. M. Keck Observatory","host_temperature_k":6220,"orbital_period_days":258.8,"transit_midpoint_bjd":2455945.4,"equilibrium_temperature_k":389.08},"designations":[{"catalog":"Exoplanet","designation":"Kepler-65 e"}],"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":"2026-08-30T09:56:50.739Z","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."}