The impact of higher modes for GW170729

GW170729 is a binary black hole merger recently announced by the LIGO Scientific and Virgo Collaborations (LVC). Its large detector-frame mass increases the relative impact of higher harmonics. In the paper announcing the discovery of this signal, the LVC comments on the modest impact of higher modes using analyses available at the time. We present a more thorough reanalysis of this event using the latest models and numerical-relativity waveforms with and without higher modes. We conclude that while the impact of higher modes is small, the inclusion of them shifts the posterior densities for various parameters. We find an increase in support for unequal masses and zero effective spin when higher modes are included for all waveform families.