@misc{indiciae1f8651bba21a,
  title = {Improved orbital and physical parameters for the Pluto-Charon system},
  author = {Tholen, David J. and Buie, Marc W. and Binzel, Richard P. and Frueh, Marian L.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870062725},
  note = {Source identifier: 19870062725}
}