{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.672","julian_year":2026.672,"time":"2026-09-03T08:30:42.545Z","years_from_j2000":26.672,"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-43-b","name":"Kepler-43 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":3280.611309626092,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":285.2408288,"dec_deg":46.6682411,"epoch_ra_deg":285.431314,"epoch_dec_deg":46.705562,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Kepler-43","semi_major_axis_km":6881502.052199999,"periapsis_km":null,"mass_kg":6.130973186347033e+27,"mass_msun":0.00308335,"constellation":"Lyra","discovered":"2011","featured":false,"url":"https://spacecatalog.org/object/kepler-43-b","radius_km":87148.8978151,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Kepler-43","host_v_mag":13.986,"eccentricity":0.017,"uncertainties":{"mass_kg":[4.9351486948923485e+26,4.9351486948923485e+26],"radius_km":[4575.495865600001,4646.987988500001],"distance_ly":[46.28158999800589,46.28158999800589],"eccentricity":[0.009,0.027],"host_mass_solar":[0.09,0.09],"inclination_deg":[0.091,0.107],"host_radius_solar":[0.07,0.07],"host_temperature_k":[143,143],"semi_major_axis_km":[373994.67675,388954.46381999995],"orbital_period_days":[6e-7,6e-7],"argument_of_periastron_deg":[81,27]},"host_mass_solar":1.32,"inclination_deg":84.646,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.42,"planets_in_system":1,"discovery_facility":"Kepler","host_spectral_type":"F8 V","host_temperature_k":6041,"orbital_period_days":3.0240949,"transit_midpoint_bjd":2454965.41624,"equilibrium_temperature_k":1620,"argument_of_periastron_deg":52},"designations":[{"catalog":"Exoplanet","designation":"Kepler-43 b"},{"catalog":"Host star","designation":"Kepler-43"}],"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."}