{"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":"2026-09-07T15:48:58.906Z","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-34-b","name":"NGTS-34 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":392.93689605424663,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":162.4997176,"dec_deg":-44.5478575,"epoch_ra_deg":162.79779,"epoch_dec_deg":-44.689946,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"NGTS-34","semi_major_axis_km":38446652.7699,"periapsis_km":null,"mass_kg":1.1406840627481535e+26,"mass_msun":0.0000573666,"constellation":"Vela","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/ngts-34-b","radius_km":23280.065000000002,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"NGTS-34","host_v_mag":9.229,"uncertainties":{"mass_kg":[2.6874755405061204e+25,2.926362255217776e+25],"radius_km":[1403.182,1403.182],"distance_ly":[1.4024724241819966,1.412257115513499],"host_mass_solar":[0.081,0.063],"inclination_deg":[0.11,0.086],"host_radius_solar":[0.061,0.061],"host_temperature_k":[50,55],"semi_major_axis_km":[2692761.6725999997,2692761.6725999997],"orbital_period_days":[0.00017,0.00012]},"host_mass_solar":1.266,"inclination_deg":88.874,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.367,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"F8 V","host_temperature_k":6134,"orbital_period_days":43.12655,"transit_midpoint_bjd":2459282.7925,"equilibrium_temperature_k":624},"designations":[{"catalog":"Exoplanet","designation":"NGTS-34 b"},{"catalog":"Host star","designation":"NGTS-34"}],"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."}