{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-04T23:21:08.078Z","years_from_j2000":26.676,"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":"k2-14-b","name":"K2-14 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":1187.36576995025,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":178.0568745,"dec_deg":2.5941222,"epoch_ra_deg":178.401302,"epoch_dec_deg":2.444742,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"K2-14","semi_major_axis_km":9379786.49289,"periapsis_km":null,"mass_kg":1.2362387486328154e+26,"mass_msun":0.0000621722,"constellation":"Virgo","discovered":"2015","featured":false,"url":"https://spacecatalog.org/object/k2-14-b","radius_km":30678.661,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"K2-14","host_v_mag":15.78,"eccentricity":0.14,"uncertainties":{"radius_km":[2678.802,2678.802],"distance_ly":[26.41540503127905,26.41540503127905],"eccentricity":[0.112926,0.157139],"host_mass_solar":[0.01,0.01],"inclination_deg":[0.24,0.21],"host_radius_solar":[0.01,0.01],"host_temperature_k":[16,17],"semi_major_axis_km":[89758.72241999999,89758.72241999999],"orbital_period_days":[0.00019,0.00019],"argument_of_periastron_deg":[68.0084,111.5455]},"host_mass_solar":0.47,"inclination_deg":88.19,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.45,"planets_in_system":1,"discovery_facility":"K2","host_spectral_type":"M0","host_temperature_k":3789,"orbital_period_days":8.36802,"transit_midpoint_bjd":2456811.4513,"equilibrium_temperature_k":488,"argument_of_periastron_deg":-70.72},"designations":[{"catalog":"Exoplanet","designation":"K2-14 b"},{"catalog":"Host star","designation":"K2-14"}],"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."}