{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.687","julian_year":2026.687,"time":"2026-09-09T01:59:15.703Z","years_from_j2000":26.687,"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-5386-a-b","name":"TOI-5386 A b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1286.6412481996724,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":226.1069193,"dec_deg":60.5362318,"epoch_ra_deg":226.263394,"epoch_dec_deg":60.430981,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-5386 A","semi_major_axis_km":7264472.601191999,"periapsis_km":null,"mass_kg":9.262848047051683e+26,"mass_msun":0.000465842,"constellation":"Draco","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-5386-a-b","radius_km":93797.503751308,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-5386 A","host_v_mag":11.554,"uncertainties":{"mass_kg":[8.731373157686481e+25,9.110998081221126e+25],"radius_km":[2001.7759970260004,2073.2679923640003],"distance_ly":[18.320203736349477,18.842053940696267],"host_mass_solar":[0.055,0.055],"inclination_deg":[0.094,0.095],"host_radius_solar":[0.022,0.022],"host_temperature_k":[65,67],"semi_major_axis_km":[115190.36043899998,112198.40302499999],"orbital_period_days":[8.3e-7,8.3e-7]},"host_mass_solar":1.165,"inclination_deg":83.951,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":1.245,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":6094,"orbital_period_days":3.62156552,"transit_midpoint_bjd":2459621.28242,"eccentricity_upper_limit":0.072,"equilibrium_temperature_k":1488},"designations":[{"catalog":"Exoplanet","designation":"TOI-5386 A b"},{"catalog":"Host star","designation":"TOI-5386 A"}],"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."}