{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-08T00:03:43.129Z","years_from_j2000":26.684,"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":"ngts-14-a-b","name":"NGTS-14 A b","class":"neptune_like_planet","category":"exoplanet","object_type":"Neptune-like planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1050.7062476869346,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":328.5174799,"dec_deg":-38.3774193,"epoch_ra_deg":328.924683,"epoch_dec_deg":-38.250771,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"NGTS-14 A","semi_major_axis_km":6028794.1892099995,"periapsis_km":null,"mass_kg":1.7462833843465232e+26,"mass_msun":0.0000878231,"constellation":"Grus","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/ngts-14-a-b","radius_km":31742.502567600004,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"NGTS-14 A","host_v_mag":13.268,"eccentricity":0,"uncertainties":{"mass_kg":[2.277760936104161e+25,2.277760936104161e+25],"radius_km":[2144.763687,2144.763687],"distance_ly":[11.588336100275894,11.84599963867212],"host_mass_solar":[0.035,0.035],"inclination_deg":[1.7,1.7],"host_radius_solar":[0.006,0.006],"host_temperature_k":[11,11],"semi_major_axis_km":[1062144.88197,1062144.88197],"orbital_period_days":[0.0000069,0.0000069]},"host_mass_solar":0.898,"inclination_deg":86.7,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.842,"planets_in_system":1,"discovery_facility":"Next-Generation Transit Survey (NGTS)","host_spectral_type":"K1 V","host_temperature_k":5187,"orbital_period_days":3.5357173,"transit_midpoint_bjd":2457502.5545,"equilibrium_temperature_k":1143},"designations":[{"catalog":"Exoplanet","designation":"NGTS-14 A b"},{"catalog":"Host star","designation":"NGTS-14 A"}],"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."}