{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.675","julian_year":2026.675,"time":"2026-09-04T16:20:12.773Z","years_from_j2000":26.675,"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-1607-b","name":"Kepler-1607 b","class":"terrestrial_planet","category":"exoplanet","object_type":"Terrestrial planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":4194.697173815037,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":296.0598685,"dec_deg":42.6560582,"epoch_ra_deg":296.279271,"epoch_dec_deg":42.719944,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Kepler-1607","semi_major_axis_km":17918832.952446,"periapsis_km":null,"mass_kg":4.305933032677584e+24,"mass_msun":0.00000216552,"constellation":"Cygnus","discovered":"2016","featured":false,"url":"https://spacecatalog.org/object/kepler-1607-b","radius_km":5867.852000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Kepler-1607","host_v_mag":13.969,"eccentricity":0,"uncertainties":{"radius_km":[892.9340000000001,2104.773],"distance_ly":[126.74436838072648,126.74436838072648],"host_mass_solar":[0.1,0.136],"host_radius_solar":[0.177,0.428],"host_temperature_k":[199.25,118.51],"semi_major_axis_km":[143613.955872,143613.955872],"orbital_period_days":[0.0002102,0.0002102]},"host_mass_solar":1.14,"inclination_deg":86.47,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.21,"planets_in_system":1,"discovery_facility":"Kepler","host_temperature_k":6116,"orbital_period_days":13.6473676,"transit_midpoint_bjd":2454965.2362,"equilibrium_temperature_k":913},"designations":[{"catalog":"Exoplanet","designation":"Kepler-1607 b"},{"catalog":"Host star","designation":"Kepler-1607"}],"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."}