TOI-942b: A Prograde Neptune in a ∼ 60 Myr Old Multi-transiting System*

Mapping the orbital obliquity distribution of young planets is one avenue towards understanding mechanisms that sculpt architectures planetary systems. TOI-942 a field star, with an age ~60 Myr, hosting system consisting two transiting Neptune-sized in 4.3- and 10.1-day period orbits. We observed spectroscopic transits inner Neptune TOI-942b to determine its projected angle. Through partial transits, we find planet be prograde orbit, angle |lambda| = 1/+41-33 deg. In addition, incorporating light curve stellar rotation period, true three-dimensional 2/+27-23 explored various sources uncertainties specific around active stars, showed our reported uncertainty fully encompassed these effects. youngest have characterized, even fewer residing multi-planet system. The geometry line systems similar ages, none which yet been identified strongly misaligned