ðeɪ wʊd kəntˈɪnjuː tə dˈuː sˌoʊ ʌntˈɪl ðeɪ pɚfˈɔːɹmd ðɛɹ lˈæst mˈɪdkˈoːɹs kɚɹˈɛkʃən, swˈɪtʃɪŋ tʊ ɐ ɹˈɛfɹəns fɹˈeɪm bˈeɪst ˌɔn aɪdˈiəl ˌoːɹiəntˈeɪʃən fɚðə sˈɛkənd ˈɛndʒɪn bˈɜːn ðeɪ wʊd mˌeɪk ɪn lˈuːnɚɹ ˈɔːɹbɪt.
They would continue to do so until they performed their last mid-course correction, switching to a reference frame based on ideal orientation for the second engine burn they would make in lunar orbit.