{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.678","julian_year":2026.678,"time":"2026-09-05T13:13:38.995Z","years_from_j2000":26.678,"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-1823-b","name":"TOI-1823 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":233.67669375342712,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":196.2197201,"dec_deg":63.753261,"epoch_ra_deg":196.483204,"epoch_dec_deg":63.609129,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1823","semi_major_axis_km":31714748.588399995,"periapsis_km":null,"mass_kg":4.02524114289139e+26,"mass_msun":0.000202435,"constellation":"Draco","discovered":"2024","featured":false,"url":"https://spacecatalog.org/object/toi-1823-b","radius_km":48094.85457221,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1823","host_v_mag":10.728,"eccentricity":0,"uncertainties":{"mass_kg":[4.956899330266845e+25,4.837455972911017e+25],"radius_km":[1607.448114877,2116.5843482660002],"distance_ly":[0.3744275216188214,0.3754059907519717],"host_mass_solar":[0.0278,0.0259],"host_radius_solar":[0.0258,0.0339],"host_temperature_k":[57,58],"semi_major_axis_km":[598391.4828,598391.4828],"orbital_period_days":[0.01,0.01],"argument_of_periastron_deg":[130,130]},"host_mass_solar":0.8414,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.8049,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":4927,"orbital_period_days":38.8,"transit_midpoint_bjd":2459645.70502,"equilibrium_temperature_k":423.63,"argument_of_periastron_deg":74},"designations":[{"catalog":"Exoplanet","designation":"TOI-1823 b"},{"catalog":"Host star","designation":"TOI-1823"}],"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."}