{"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":"2026-09-08T11:13:58.647Z","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-76700-b","name":"HD 76700 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":198.57411360166262,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":133.4782248,"dec_deg":-66.8004747,"epoch_ra_deg":133.565078,"epoch_dec_deg":-66.901814,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 76700","semi_major_axis_km":7479893.535,"periapsis_km":null,"mass_kg":3.9860816381822815e+26,"mass_msun":0.000200466,"constellation":"Volans","discovered":"2002","featured":false,"url":"https://spacecatalog.org/object/hd-76700-b","radius_km":61229.76,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 76700","host_v_mag":8.16,"eccentricity":0.09,"uncertainties":{"mass_kg":[5.694402340260402e+25,5.694402340260402e+25],"distance_ly":[0.38192911830630655,0.3832337438171735],"eccentricity":[0.08,0.08],"host_mass_solar":[0.17,0.17],"host_radius_solar":[0.03,0.03],"host_temperature_k":[33,33],"orbital_period_days":[0.00023,0.00023]},"host_mass_solar":0.99,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.37,"planets_in_system":1,"discovery_facility":"Anglo-Australian Telescope","host_spectral_type":"G6 V","host_temperature_k":5644,"orbital_period_days":3.97097,"periastron_epoch_bjd":2451212.9,"equilibrium_temperature_k":1424.61,"argument_of_periastron_deg":30},"designations":[{"catalog":"Exoplanet","designation":"HD 76700 b"},{"catalog":"Host star","designation":"HD 76700"}],"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."}