{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T06:24:15.175Z","years_from_j2000":26.68,"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-35-b","name":"NGTS-35 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":597.1205731962596,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":170.276336,"dec_deg":-26.0666162,"epoch_ra_deg":170.607234,"epoch_dec_deg":-26.213712,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"NGTS-35","semi_major_axis_km":23935659.312,"periapsis_km":null,"mass_kg":9.077695159042897e+26,"mass_msun":0.00045653,"constellation":"Hydra","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/ngts-35-b","radius_km":69521.29000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"NGTS-35","host_v_mag":13.059,"eccentricity":0.192,"uncertainties":{"mass_kg":[1.1347118948803621e+26,1.3138769309141035e+26],"radius_km":[4145.765,4145.765],"distance_ly":[4.1487091245569765,4.204155708768822],"eccentricity":[0.033,0.037],"host_mass_solar":[0.048,0.035],"inclination_deg":[0.12,0.091],"host_radius_solar":[0.033,0.051],"host_temperature_k":[84,18],"semi_major_axis_km":[1645576.5776999998,1645576.5776999998],"orbital_period_days":[0.000022,0.000022],"argument_of_periastron_deg":[15,16]},"host_mass_solar":0.789,"inclination_deg":88.816,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.753,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"K3.5 V","host_temperature_k":4717,"orbital_period_days":25.241192,"transit_midpoint_bjd":2459334.02963,"equilibrium_temperature_k":451,"argument_of_periastron_deg":38},"designations":[{"catalog":"Exoplanet","designation":"NGTS-35 b"},{"catalog":"Host star","designation":"NGTS-35"}],"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."}