{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T08:22:00.742Z","years_from_j2000":26.68,"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-86264-b","name":"HD 86264 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":221.1689228243677,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":149.2409308,"dec_deg":-15.8953993,"epoch_ra_deg":149.562795,"epoch_dec_deg":-16.022963,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 86264","semi_major_axis_km":413338916.7441,"periapsis_km":null,"mass_kg":1.8616806074437805e+28,"mass_msun":0.00936266,"constellation":"Hydra","discovered":"2009","featured":false,"url":"https://spacecatalog.org/object/hd-86264-b","radius_km":79726.25,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 86264","host_v_mag":7.41,"eccentricity":0.821,"uncertainties":{"mass_kg":[3.6368067331219326e+27,2.23466209129299e+28],"distance_ly":[0.8907330675444263,0.8979085078541946],"eccentricity":[0.185,0.101],"host_mass_solar":[0.185,0.185],"inclination_deg":[50.055,43.178],"host_radius_solar":[0.12,0.12],"host_temperature_k":[44,44],"semi_major_axis_km":[23187669.958499998,21691691.251499996],"orbital_period_days":[46.45772,58.01645],"argument_of_periastron_deg":[19.088,16.231]},"host_mass_solar":1.26,"inclination_deg":93.591,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.88,"planets_in_system":1,"discovery_facility":"Lick Observatory","host_spectral_type":"F7 V","host_temperature_k":6210,"orbital_period_days":1488.79123,"periastron_epoch_bjd":2450646.688,"equilibrium_temperature_k":247.01,"argument_of_periastron_deg":313.959},"designations":[{"catalog":"Exoplanet","designation":"HD 86264 b"},{"catalog":"Host star","designation":"HD 86264"}],"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."}