{"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":"2026-09-08T23:58:31.664Z","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-3457-b","name":"TOI-3457 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1208.9507990275442,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":183.2082686,"dec_deg":-79.7572043,"epoch_ra_deg":183.589114,"epoch_dec_deg":-79.906682,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-3457","semi_major_axis_km":29934533.92707,"periapsis_km":null,"mass_kg":4.764292745389369e+27,"mass_msun":0.00239603,"constellation":"Chamaeleon","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/toi-3457-b","radius_km":67862.98400000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-3457","host_v_mag":12.44,"uncertainties":{"radius_km":[1594.525,1594.525],"distance_ly":[9.872753553485824,10.032570178567028],"host_mass_solar":[0.06,0.06],"inclination_deg":[0.43,0.46],"host_radius_solar":[0.037,0.037],"host_temperature_k":[120,120],"semi_major_axis_km":[957426.37248,957426.37248],"orbital_period_days":[0.00003,0.000028],"argument_of_periastron_deg":[9.1,8.5]},"host_mass_solar":1.04,"inclination_deg":88.34,"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":6300,"orbital_period_days":32.600268,"transit_midpoint_bjd":2459531.16898,"eccentricity_lower_limit":0.59,"equilibrium_temperature_k":824.2,"argument_of_periastron_deg":128.1},"designations":[{"catalog":"Exoplanet","designation":"TOI-3457 b"},{"catalog":"Host star","designation":"TOI-3457"}],"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."}