{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T17:53:54.509Z","years_from_j2000":26.681,"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":"toi-5340-b","name":"TOI-5340 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1737.2034530689134,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":59.3094816,"dec_deg":22.3783373,"epoch_ra_deg":59.706386,"epoch_dec_deg":22.456206,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-5340","semi_major_axis_km":9394746.279959999,"periapsis_km":null,"mass_kg":1.6134059097932125e+27,"mass_msun":0.000811405,"constellation":"Taurus","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-5340-b","radius_km":96156.739725024,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-5340","host_v_mag":12.399,"uncertainties":{"mass_kg":[4.745311499391802e+26,4.745311499391802e+26],"radius_km":[3503.107962905,3646.092017362],"distance_ly":[36.12181883212933,37.658015371175196],"host_mass_solar":[0.15,0.07],"inclination_deg":[0.73,0.69],"host_radius_solar":[0.054,0.055],"host_temperature_k":[150,130],"semi_major_axis_km":[359034.88967999996,164557.65777],"orbital_period_days":[0.0000072,0.0000071]},"host_mass_solar":1.35,"inclination_deg":86.17,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.842,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5990,"orbital_period_days":4.9394392,"transit_midpoint_bjd":2459712.57912,"eccentricity_upper_limit":0.13,"equilibrium_temperature_k":1566},"designations":[{"catalog":"Exoplanet","designation":"TOI-5340 b"},{"catalog":"Host star","designation":"TOI-5340"}],"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."}