{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.674","julian_year":2026.674,"time":"2026-09-04T00:20:21.341Z","years_from_j2000":26.674,"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-1008-b","name":"Kepler-1008 b","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":921.603768695316,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":296.5476395,"dec_deg":44.9418307,"epoch_ra_deg":296.75719,"epoch_dec_deg":45.006845,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Kepler-1008","semi_major_axis_km":14593272.286785,"periapsis_km":null,"mass_kg":1.3019325951785207e+25,"mass_msun":0.00000654761,"constellation":"Cygnus","discovered":"2016","featured":false,"url":"https://spacecatalog.org/object/kepler-1008-b","radius_km":8163.968000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Kepler-1008","host_v_mag":13.59,"eccentricity":0,"uncertainties":{"radius_km":[318.90500000000003,446.46700000000004],"distance_ly":[4.1487091245569765,4.187847889882986],"host_mass_solar":[0.034,0.033],"host_radius_solar":[0.026,0.032],"host_temperature_k":[66.82,79.91],"semi_major_axis_km":[130150.14750899999,130150.14750899999],"orbital_period_days":[0.00002837,0.00002837]},"host_mass_solar":0.81,"inclination_deg":88.35,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.78,"planets_in_system":1,"discovery_facility":"Kepler","host_temperature_k":5066,"orbital_period_days":12.43931193,"transit_midpoint_bjd":2454969.37781,"equilibrium_temperature_k":627},"designations":[{"catalog":"Exoplanet","designation":"Kepler-1008 b"},{"catalog":"Host star","designation":"Kepler-1008"}],"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."}