{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T02:16:48.813Z","years_from_j2000":26.677,"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":"kelt-7-b","name":"KELT-7 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":445.7937986270221,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":78.2955912,"dec_deg":33.3179532,"epoch_ra_deg":78.735799,"epoch_dec_deg":33.349966,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"KELT-7","semi_major_axis_km":6604745.991405,"periapsis_km":null,"mass_kg":2.6384064176539866e+27,"mass_msun":0.00132689,"constellation":"Auriga","discovered":"2015","featured":false,"url":"https://spacecatalog.org/object/kelt-7-b","radius_km":114387.39664,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"KELT-7","host_v_mag":8.56,"eccentricity":0,"uncertainties":{"mass_kg":[4.175895049524295e+26,4.175895049524295e+26],"radius_km":[4289.527374,4289.527374],"distance_ly":[3.013684930102709,3.059346822983053],"host_mass_solar":[0.25,0.25],"inclination_deg":[0.38,0.38],"host_radius_solar":[0.07,0.07],"host_temperature_k":[7,7],"semi_major_axis_km":[77790.89276399999,92750.679834],"orbital_period_days":[0.000004,0.000004]},"host_mass_solar":1.76,"inclination_deg":83.76,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.81,"planets_in_system":1,"discovery_facility":"KELT","host_spectral_type":"F","host_temperature_k":6768,"orbital_period_days":2.73477,"transit_midpoint_bjd":2459109.138447,"equilibrium_temperature_k":2048},"designations":[{"catalog":"Exoplanet","designation":"KELT-7 b"},{"catalog":"Host star","designation":"KELT-7"}],"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."}