The S-IVB, with the test article attached, posed no further hazard to Apollo8, passing the orbit of the Moon and going into a  solar orbit with an inclination of 23.47° from the Earth's equatorial plane, and an orbital period of 340.80 days.
ðɪ ˈɛsˈɪvb, wɪððə tˈɛst ˈɑːɹɾɪkəl ɐtˈætʃt, pˈoʊzd nˈoʊ fˈɜːðɚ hˈæzɚd tʊ ɐpˈɑːloʊ ˈeɪt, pˈæsɪŋ ðɪ ˈɔːɹbɪt ʌvðə mˈuːn ænd ɡˌoʊɪŋ ˌɪntʊ ɐ sˈoʊlɚɹ ˈɔːɹbɪt wɪð ɐn ɪŋklɪnˈeɪʃən ʌv twˈɛnti θɹˈiː.fˈoːɹɾi sˈɛvən dᵻɡɹˈiːz fɹʌmðɪ ˈɜːθz ɪkwɐtˈoːɹɪəl plˈeɪn, ænd ɐn ˈɔːɹbɪɾəl pˈiəɹɪəd ʌv θɹˈiːhˈʌndɹɪd fˈoːɹɾi.ˈeɪɾi dˈeɪz.