{"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":"2026-09-08T09:58:37.522Z","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":"hd-86081-b","name":"HD 86081 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":338.99389274367445,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":149.0243714,"dec_deg":-3.8083543,"epoch_ra_deg":149.363343,"epoch_dec_deg":-3.935658,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 86081","semi_major_axis_km":5176086.326219999,"periapsis_km":null,"mass_kg":2.809238487861798e+27,"mass_msun":0.00141281,"constellation":"Sextans","discovered":"2006","featured":false,"url":"https://spacecatalog.org/object/hd-86081-b","radius_km":86742.16,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 86081","host_v_mag":8.73,"eccentricity":0.0119,"uncertainties":{"mass_kg":[4.365708460866308e+26,4.365708460866308e+26],"distance_ly":[1.7971216412192563,1.816691023882261],"eccentricity":[0.0047,0.0047],"host_mass_solar":[0.28,0.28],"host_radius_solar":[0.14,0.14],"semi_major_axis_km":[403914.25088999997,403914.25088999997],"orbital_period_days":[0.0000031,0.0000031],"argument_of_periastron_deg":[23,23]},"host_mass_solar":1.21,"stars_in_system":2,"discovery_method":"Radial Velocity","host_radius_solar":1.46,"planets_in_system":1,"discovery_facility":"W. M. Keck Observatory","host_spectral_type":"F8","host_temperature_k":5939,"orbital_period_days":2.1378431,"periastron_epoch_bjd":2463695.46,"equilibrium_temperature_k":1860.31,"argument_of_periastron_deg":3},"designations":[{"catalog":"Exoplanet","designation":"HD 86081 b"},{"catalog":"Host star","designation":"HD 86081"}],"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."}