{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-05T22:43:20.997Z","years_from_j2000":26.679,"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-1513-b","name":"Kepler-1513 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1139.091364484395,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":289.7917561,"dec_deg":39.2852655,"epoch_ra_deg":290.020167,"epoch_dec_deg":39.33403,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Kepler-1513","semi_major_axis_km":85227402.916497,"periapsis_km":null,"mass_kg":2.8851493913913287e+26,"mass_msun":0.000145098,"constellation":"Lyra","discovered":"2016","featured":false,"url":"https://spacecatalog.org/object/kepler-1513-b","radius_km":54813.3914,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Kepler-1513","host_v_mag":13.071,"eccentricity":0.306,"uncertainties":{"mass_kg":[1.1578560060307648e+26,1.974049583866433e+26],"radius_km":[140.3182,229.6116],"distance_ly":[8.26154104756511,8.382218907320306],"eccentricity":[0.097,0.093],"host_mass_solar":[0.037,0.037],"host_radius_solar":[0.055,0.077],"host_temperature_k":[100,100],"semi_major_axis_km":[713581.843239,713581.843239],"orbital_period_days":[0.0028,0.0011],"argument_of_periastron_deg":[13,21]},"host_mass_solar":0.943,"inclination_deg":89.86,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.95,"planets_in_system":2,"discovery_facility":"Kepler","host_spectral_type":"G V","host_temperature_k":5491,"orbital_period_days":160.8842,"transit_midpoint_bjd":2455110.50639,"equilibrium_temperature_k":346,"argument_of_periastron_deg":259},"designations":[{"catalog":"Exoplanet","designation":"Kepler-1513 b"},{"catalog":"Host star","designation":"Kepler-1513"}],"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."}