{"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":"2026-09-07T12:52:11.810Z","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-2328-b","name":"TOI-2328 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":755.9717753994223,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":31.6907424,"dec_deg":-81.247376,"epoch_ra_deg":31.542095,"epoch_dec_deg":-81.118789,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-2328","semi_major_axis_km":18998929.5789,"periapsis_km":null,"mass_kg":3.036999359610753e+26,"mass_msun":0.000152735,"constellation":"Hydrus","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-2328-b","radius_km":63627.879805242,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-2328","host_v_mag":12.331,"eccentricity":0.057,"uncertainties":{"mass_kg":[3.7962491995134414e+25,3.7962491995134414e+25],"radius_km":[2859.6800048630002,2144.759987702],"distance_ly":[3.581197027329843,3.6170742288786846],"eccentricity":[0.029,0.046],"host_mass_solar":[0.06,0.06],"inclination_deg":[0.08,0.08],"host_radius_solar":[0.06,0.06],"host_temperature_k":[144,147],"semi_major_axis_km":[1047185.0948999999,897587.2241999999],"orbital_period_days":[0.00001,0.00001],"argument_of_periastron_deg":[9.3,14.1]},"host_mass_solar":0.95,"inclination_deg":88.66,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.9,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5525,"orbital_period_days":17.10197,"transit_midpoint_bjd":2458330.4894,"equilibrium_temperature_k":842,"argument_of_periastron_deg":148.7},"designations":[{"catalog":"Exoplanet","designation":"TOI-2328 b"},{"catalog":"Host star","designation":"TOI-2328"}],"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."}