{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T05:52:32.823Z","years_from_j2000":26.682,"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-2818-b","name":"TOI-2818 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1019.8061924620503,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":119.0598183,"dec_deg":-35.1167104,"epoch_ra_deg":119.311318,"epoch_dec_deg":-35.187642,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-2818","semi_major_axis_km":7375175.025509999,"periapsis_km":null,"mass_kg":1.3476684658272717e+27,"mass_msun":0.000677762,"constellation":"Puppis","discovered":"2023","featured":false,"url":"https://spacecatalog.org/object/toi-2818-b","radius_km":97443.595704889,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-2818","host_v_mag":11.937,"eccentricity":0,"uncertainties":{"mass_kg":[4.9351239593674735e+26,4.9351239593674735e+26],"radius_km":[3217.139981553,3288.6319768910002],"distance_ly":[7.283071914414881,7.387441955284239],"host_mass_solar":[0.049,0.063],"inclination_deg":[0.55,0.75],"host_radius_solar":[0.031,0.032],"host_temperature_k":[83,88],"semi_major_axis_km":[119678.29656,149597.8707],"orbital_period_days":[0.0000023,0.0000024]},"host_mass_solar":0.977,"inclination_deg":87.73,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.229,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5721,"orbital_period_days":4.039709,"transit_midpoint_bjd":2459023.44641,"equilibrium_temperature_k":1376},"designations":[{"catalog":"Exoplanet","designation":"TOI-2818 b"},{"catalog":"Host star","designation":"TOI-2818"}],"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."}