{"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":"2026-09-08T23:59:17.428Z","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-813-b","name":"TOI-813 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":858.2642001427245,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":72.6940102,"dec_deg":-60.9054608,"epoch_ra_deg":72.783066,"epoch_dec_deg":-60.858853,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-813","semi_major_axis_km":63279899.306099996,"periapsis_km":null,"mass_kg":2.173869103876062e+26,"mass_msun":0.000109327,"constellation":"Dorado","discovered":"2020","featured":false,"url":"https://spacecatalog.org/object/toi-813-b","radius_km":42797.051,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-813","host_v_mag":10.358,"eccentricity":0,"uncertainties":{"radius_km":[2423.6780000000003,2423.6780000000003],"distance_ly":[5.088039492381197,5.1467476403702115],"host_mass_solar":[0.06,0.06],"inclination_deg":[0.27,0.24],"host_radius_solar":[0.1,0.1],"host_temperature_k":[150,150],"semi_major_axis_km":[5535121.215899999,4637533.991699999],"orbital_period_days":[0.0031,0.0027]},"host_mass_solar":1.32,"inclination_deg":89.64,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.94,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"G0 IV","host_temperature_k":5907,"orbital_period_days":83.8911,"transit_midpoint_bjd":2458370.7836,"equilibrium_temperature_k":610},"designations":[{"catalog":"Exoplanet","designation":"TOI-813 b"},{"catalog":"Host star","designation":"TOI-813"}],"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."}