{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T17:22:12.568Z","years_from_j2000":26.681,"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":"kic-9663113-b","name":"KIC 9663113 b","class":"neptune_like_planet","category":"exoplanet","object_type":"Neptune-like planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":5201.346217999994,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":297.0454037,"dec_deg":46.3286653,"epoch_ra_deg":297.248955,"epoch_dec_deg":46.394867,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"KIC 9663113","semi_major_axis_km":232394308.21762198,"periapsis_km":null,"mass_kg":1.1466562306159448e+26,"mass_msun":0.000057667,"constellation":"Cygnus","discovered":"2015","featured":false,"url":"https://spacecatalog.org/object/kic-9663113-b","radius_km":29339.26,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"KIC 9663113","host_v_mag":14.027,"eccentricity":0,"uncertainties":{"radius_km":[4464.67,3826.86],"distance_ly":[144.6014300607182,144.6014300607182],"host_mass_solar":[0.13,0.13],"inclination_deg":[0.062,0.095],"host_radius_solar":[0.12,0.12],"host_temperature_k":[180,155],"semi_major_axis_km":[1518418.3876049998,1518418.3876049998],"orbital_period_days":[0.00567,0.00583]},"host_mass_solar":0.98,"inclination_deg":89.768,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.03,"planets_in_system":2,"discovery_facility":"Kepler","host_temperature_k":6065,"orbital_period_days":572.3847,"transit_midpoint_bjd":2455139.506,"equilibrium_temperature_k":264},"designations":[{"catalog":"Exoplanet","designation":"KIC 9663113 b"}],"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."}