{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T05:59:46.455Z","years_from_j2000":26.677,"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":"hd-8326-b","name":"HD 8326 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":100.08499837891532,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":20.5314418,"dec_deg":-26.8940678,"epoch_ra_deg":20.849948,"epoch_dec_deg":-26.753375,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 8326","semi_major_axis_km":79735665.08309999,"periapsis_km":null,"mass_kg":3.9774637999490585e+26,"mass_msun":0.000200032,"constellation":"Sculptor","discovered":"2019","featured":false,"url":"https://spacecatalog.org/object/hd-8326-b","radius_km":61102.198000000004,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 8326","host_v_mag":8.76,"eccentricity":0.2,"uncertainties":{"mass_kg":[1.1705449020871104e+26,1.1705449020871104e+26],"distance_ly":[0.14383496257308384,0.1441611189508006],"eccentricity":[0.11,0.11],"host_mass_solar":[0.05,0.05],"host_radius_solar":[0.015954,0.010268],"host_temperature_k":[32,51],"semi_major_axis_km":[1645576.5776999998,1645576.5776999998],"orbital_period_days":[1.44,1.44],"argument_of_periastron_deg":[36.46,36.46]},"host_mass_solar":0.8,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.783181,"planets_in_system":1,"discovery_facility":"Las Campanas Observatory","host_spectral_type":"K2 V","host_temperature_k":4914,"orbital_period_days":158.991,"equilibrium_temperature_k":287.23,"argument_of_periastron_deg":-44.79},"designations":[{"catalog":"Exoplanet","designation":"HD 8326 b"},{"catalog":"Host star","designation":"HD 8326"}],"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."}