{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T12:46:42.240Z","years_from_j2000":26.669,"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-76-b","name":"Kepler-76 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":2684.1365260577118,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":294.1921185,"dec_deg":39.6189727,"epoch_ra_deg":294.422456,"epoch_dec_deg":39.6784,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Kepler-76","semi_major_axis_km":4098981.6571799996,"periapsis_km":null,"mass_kg":3.8152495679744696e+27,"mass_msun":0.00191874,"constellation":"Cygnus","discovered":"2013","featured":false,"url":"https://spacecatalog.org/object/kepler-76-b","radius_km":97229.287144,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Kepler-76","host_v_mag":13.474,"eccentricity":0,"uncertainties":{"mass_kg":[6.64346939697047e+26,7.023096219654495e+26],"radius_km":[8579.054748,8579.054748],"distance_ly":[33.20924237911881,34.03441801474218],"host_mass_solar":[0.2,0.2],"inclination_deg":[0.17,0.2],"host_radius_solar":[0.08,0.08],"host_temperature_k":[95,95],"semi_major_axis_km":[284235.95433,299195.7414],"orbital_period_days":[4e-7,4e-7]},"host_mass_solar":1.2,"inclination_deg":77.55,"stars_in_system":1,"discovery_method":"Orbital Brightness Modulation","host_radius_solar":1.32,"planets_in_system":1,"discovery_facility":"Kepler","host_spectral_type":"F","host_temperature_k":6409,"orbital_period_days":1.5449298,"periastron_epoch_bjd":2456126.77,"transit_midpoint_bjd":2454966.54841,"equilibrium_temperature_k":2140},"designations":[{"catalog":"Exoplanet","designation":"Kepler-76 b"},{"catalog":"Host star","designation":"Kepler-76"}],"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":"2026-09-01T22:58:55.274Z","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."}