{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T10:57:42.760Z","years_from_j2000":26.686,"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-1259-a-b","name":"TOI-1259 A b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":385.210251466137,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":282.1001665,"dec_deg":79.2564761,"epoch_ra_deg":281.669359,"epoch_dec_deg":79.285022,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1259 A","semi_major_axis_km":6103593.12456,"periapsis_km":null,"mass_kg":8.420756693585845e+26,"mass_msun":0.000423492,"constellation":"Draco","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/toi-1259-a-b","radius_km":73985.96,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1259 A","host_v_mag":12.079,"eccentricity":0,"uncertainties":{"mass_kg":[7.763818228128793e+25,7.763818228128793e+25],"radius_km":[1275.6200000000001,1275.6200000000001],"distance_ly":[1.2133017251062854,1.2230864164377877],"host_mass_solar":[0.044,0.048],"inclination_deg":[0.2,0.3],"host_radius_solar":[0.015,0.015],"host_temperature_k":[100,100],"semi_major_axis_km":[134638.08362999998,134638.08362999998],"orbital_period_days":[1e-7,1e-7]},"host_mass_solar":0.746,"inclination_deg":89.5,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.715,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":4775,"orbital_period_days":3.4779792,"transit_midpoint_bjd":2458686.70048,"equilibrium_temperature_k":963},"designations":[{"catalog":"Exoplanet","designation":"TOI-1259 A b"},{"catalog":"Host star","designation":"TOI-1259 A"}],"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."}