{"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":"2026-09-07T16:32:55.207Z","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":"toi-5422-b","name":"TOI-5422 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1128.960947392513,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":86.8436173,"dec_deg":25.6260342,"epoch_ra_deg":87.259497,"epoch_dec_deg":25.636029,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-5422","semi_major_axis_km":9260108.196329998,"periapsis_km":null,"mass_kg":5.314748879318817e+28,"mass_msun":0.0267286,"constellation":"Taurus","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/toi-5422-b","radius_km":58051.50384997301,"radius_kind":null,"data_quality":"The published mass and radius imply a density no material has. One of the two is likely an upper limit rather than a measurement.","description":null,"properties":{"host_star":"TOI-5422","host_v_mag":11.499,"eccentricity":0.094,"uncertainties":{"mass_kg":[2.2777495197080646e+27,3.036999359610753e+27],"radius_km":[1787.300011012,2216.25198304],"distance_ly":[22.899439279492555,23.851815902425447],"eccentricity":[0.0045,0.0047],"host_mass_solar":[0.069,0.094],"inclination_deg":[0.99,0.87],"host_radius_solar":[0.04,0.048],"host_temperature_k":[120,120],"semi_major_axis_km":[194477.23190999997,269276.16725999996],"orbital_period_days":[0.00001,0.00001],"argument_of_periastron_deg":[5.9,5.9]},"host_mass_solar":1.066,"inclination_deg":88.71,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.474,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5820,"orbital_period_days":5.377219,"periastron_epoch_bjd":2459541.071,"transit_midpoint_bjd":2459961.67611,"equilibrium_temperature_k":1369,"argument_of_periastron_deg":0.1},"designations":[{"catalog":"Exoplanet","designation":"TOI-5422 b"},{"catalog":"Host star","designation":"TOI-5422"}],"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."}