Liens externes Data on -LRB- 87 -RRB- Sylvia from Johnston 's archive -LRB- maintained by W. R. Johnston -RRB- Hubble Finds New Asteroid Moon -LRB- SpaceDaily.com, 21-03-2001 -RRB-, includes discovery image.
Références Autres sites Web Data on -LRB- 87 -RRB- Sylvia from Johnston 's archive -LRB- maintained by W. R. Johnston -RRB- Hubble Finds New Asteroid Moon -LRB- SpaceDaily.com, 21-03-2001 -RRB-, includes discovery image.