{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.687","julian_year":2026.687,"time":"2026-09-08T21:35:33.023Z","years_from_j2000":26.687,"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":"cfbdsir-j145829-101343-b","name":"CFBDSIR J145829+101343 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":75.34212325256773,"distance_method":"NASA Exoplanet Archive sy_dist (Liu+ 2011, 2011ApJ...740..108L)","ra_deg":224.6208333,"dec_deg":10.2286111,"epoch_ra_deg":224.946522,"epoch_dec_deg":10.120794,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"CFBDSIR J145829+101343","semi_major_axis_km":388954463.82,"periapsis_km":null,"mass_kg":1.992972139160661e+28,"mass_msun":0.0100229,"constellation":"Boötes","discovered":"2011","featured":false,"url":"https://spacecatalog.org/object/cfbdsir-j145829-101343-b","radius_km":79088.44,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"CFBDSIR J145829+101343","uncertainties":{"mass_kg":[8.541394484515231e+27,8.541394484515231e+27],"distance_ly":[7.827753065201842,7.827753065201842],"host_mass_solar":[0.009,0.009],"host_temperature_k":[24.5,24.5],"semi_major_axis_km":[44879361.20999999,44879361.20999999],"orbital_period_days":[2737.5,2737.5]},"host_mass_solar":0.021,"stars_in_system":1,"discovery_method":"Imaging","planets_in_system":1,"discovery_facility":"W. M. Keck Observatory","host_temperature_k":580.5,"orbital_period_days":10037.5,"equilibrium_temperature_k":370},"designations":[{"catalog":"Exoplanet","designation":"CFBDSIR J145829+101343 b"},{"catalog":"Host star","designation":"CFBDSIR J145829+101343"}],"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."}