{"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":"2026-09-06T11:49:16.384Z","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-26-b","name":"NGTS-26 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":3567.139687450251,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":217.6832961,"dec_deg":-31.7324526,"epoch_ra_deg":218.083305,"epoch_dec_deg":-31.851901,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"NGTS-26","semi_major_axis_km":7330295.664299999,"periapsis_km":null,"mass_kg":5.5425238310507374e+26,"mass_msun":0.000278742,"constellation":"Centaurus","discovered":"2024","featured":false,"url":"https://spacecatalog.org/object/ngts-26-b","radius_km":94941.375740497,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"NGTS-26","host_v_mag":15.009,"eccentricity":0,"uncertainties":{"mass_kg":[1.1388747598540324e+26,1.23378098954326e+26],"radius_km":[3431.6159675669996,4218.027980066001],"distance_ly":[130.56039800001238,140.63863007145974],"host_mass_solar":[0.03,0.04],"inclination_deg":[0.68,0.78],"host_radius_solar":[0.02,0.05],"host_temperature_k":[100,100],"semi_major_axis_km":[478713.18624,568471.90866],"orbital_period_days":[0.0000092,0.000009]},"host_mass_solar":0.96,"inclination_deg":86.43,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.16,"planets_in_system":1,"discovery_facility":"Next-Generation Transit Survey (NGTS)","host_temperature_k":5550,"orbital_period_days":4.5199279,"transit_midpoint_bjd":2457756.8314,"equilibrium_temperature_k":1331},"designations":[{"catalog":"Exoplanet","designation":"NGTS-26 b"},{"catalog":"Host star","designation":"NGTS-26"}],"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."}