{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T12:33:35.447Z","years_from_j2000":26.683,"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-3593-b","name":"TOI-3593 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":739.1681988194556,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":331.506364,"dec_deg":34.2116583,"epoch_ra_deg":331.800835,"epoch_dec_deg":34.34221,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-3593","semi_major_axis_km":7195657.580669999,"periapsis_km":null,"mass_kg":3.378661787566963e+27,"mass_msun":0.00169918,"constellation":"Pegasus","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-3593-b","radius_km":70348.127813481,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-3593","host_v_mag":12.201,"eccentricity":0.105,"uncertainties":{"mass_kg":[2.4675619796837367e+26,1.7083121397810487e+26],"radius_km":[1858.7920063500003,2001.7759970260004],"distance_ly":[5.4696424543097875,5.55444311251614],"eccentricity":[0.028,0.052],"host_mass_solar":[0.043,0.037],"inclination_deg":[0.37,0.63],"host_radius_solar":[0.022,0.024],"host_temperature_k":[120,100],"semi_major_axis_km":[104718.50949,86766.76500599999],"orbital_period_days":[0.0000016,0.0000016],"argument_of_periastron_deg":[14,19]},"host_mass_solar":1.015,"inclination_deg":88.09,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.918,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5550,"orbital_period_days":3.8212867,"transit_midpoint_bjd":2460055.72703,"equilibrium_temperature_k":1170,"argument_of_periastron_deg":62},"designations":[{"catalog":"Exoplanet","designation":"TOI-3593 b"},{"catalog":"Host star","designation":"TOI-3593"}],"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."}