{"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":"2026-09-05T10:02:00.267Z","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":"kepler-1912-b","name":"Kepler-1912 b","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":968.7398884029398,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":282.1178211,"dec_deg":46.2239547,"epoch_ra_deg":282.308855,"epoch_dec_deg":46.253352,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Kepler-1912","semi_major_axis_km":9707405.829723,"periapsis_km":null,"mass_kg":1.4392924561377225e+25,"mass_msun":0.00000723841,"constellation":"Lyra","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/kepler-1912-b","radius_km":8653.200670748001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Kepler-1912","host_v_mag":12.36,"eccentricity":0,"uncertainties":{"distance_ly":[5.880599490232884,5.952353893330567],"host_mass_solar":[0.068,0.062],"host_radius_solar":[0.074,0.137],"host_temperature_k":[115,104],"semi_major_axis_km":[83774.80759199998,83774.80759199998]},"host_mass_solar":0.977,"inclination_deg":89.19,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.962,"planets_in_system":1,"discovery_facility":"Kepler","host_temperature_k":5734,"orbital_period_days":6.059219837,"transit_midpoint_bjd":2454966.67216,"equilibrium_temperature_k":976},"designations":[{"catalog":"Exoplanet","designation":"Kepler-1912 b"},{"catalog":"Host star","designation":"Kepler-1912"}],"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."}