{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.664","julian_year":2026.664,"time":"2026-08-31T09:41:44.400Z","years_from_j2000":26.664,"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-342-e","name":"Kepler-342 e","class":"terrestrial_planet","category":"exoplanet","object_type":"Terrestrial planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":2549.274125435615,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":292.6780488,"dec_deg":46.7266813,"epoch_ra_deg":292.87455,"epoch_dec_deg":46.782397,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Kepler-342","semi_major_axis_km":4351802.058662999,"periapsis_km":null,"mass_kg":3.672883238691698e+24,"mass_msun":0.00000184715,"constellation":"Cygnus","discovered":"2016","featured":false,"url":"https://spacecatalog.org/object/kepler-342-e","radius_km":5612.728,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Kepler-342","host_v_mag":13.2,"eccentricity":0,"uncertainties":{"radius_km":[382.68600000000004,510.24800000000005],"distance_ly":[30.978332755536286,31.731753988061964],"host_mass_solar":[0.04,0.047],"host_radius_solar":[0.082,0.115],"host_temperature_k":[66.63,76.03],"semi_major_axis_km":[29919.57414,29919.57414],"orbital_period_days":[0.000006213,0.000006213]},"host_mass_solar":1.26,"inclination_deg":58.94,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.34,"planets_in_system":4,"discovery_facility":"Kepler","host_temperature_k":6366,"orbital_period_days":1.644224613,"transit_midpoint_bjd":2454964.75113,"equilibrium_temperature_k":1897},"designations":[{"catalog":"Exoplanet","designation":"Kepler-342 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."}