170Yb has 70 protons and 100 neutrons.
170Yb is a stable isotope.
The mass excess of 170Yb is -60763.929 with an uncertainty of ±0.01.
The mass was measured using a Penning Trap and the related equations include:
Influence Equations
53.6% 170Yb-129Xe1.318 1
46.4% 170Yb-132Xe1.288 1
Reference
1. R. Rana, M. Hocker, E.G. Myers (2012) Atomic masses of strontium and ytterbium
Physical Review A 86(5)
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.86.050502