{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T08:53:14.041Z","years_from_j2000":26.685,"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-76920-b","name":"HD 76920 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":600.2288434759001,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":133.820353,"dec_deg":-67.2653621,"epoch_ra_deg":133.902755,"epoch_dec_deg":-67.367352,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 76920","semi_major_axis_km":163211276.9337,"periapsis_km":null,"mass_kg":5.941129997238536e+27,"mass_msun":0.00298788,"constellation":"Volans","discovered":"2017","featured":false,"url":"https://spacecatalog.org/object/hd-76920-b","radius_km":83553.11,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 76920","host_v_mag":7.83,"eccentricity":0.8782,"uncertainties":{"mass_kg":[8.161935778953899e+26,7.782310859002554e+26],"distance_ly":[3.31701036137928,3.3496259991509545],"eccentricity":[0.0025,0.0025],"host_mass_solar":[0.2,0.2],"host_radius_solar":[0.56,0.56],"host_temperature_k":[53,53],"semi_major_axis_km":[11519036.043899998,10172655.2076],"orbital_period_days":[0.039,0.043],"argument_of_periastron_deg":[1,1]},"host_mass_solar":1,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":8.33,"planets_in_system":1,"discovery_facility":"Multiple Observatories","host_spectral_type":"K1 III","host_temperature_k":4664,"orbital_period_days":415.891,"periastron_epoch_bjd":2454812.47,"equilibrium_temperature_k":621.44,"argument_of_periastron_deg":1.2},"designations":[{"catalog":"Exoplanet","designation":"HD 76920 b"},{"catalog":"Host star","designation":"HD 76920"}],"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."}