外部連結
- [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=138P;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=138P Horizons Ephemeris]
- [http://www.aerith.net/comet/catalog/0138P/index.html 138P/Shoemaker-Levy 7] – Seiichi Yoshida @ aerith.net
- [https://web.archive.org/web/20160304113205/http://scully.cfa.harvard.edu/cgi-bin/returnprepeph.cgi?d=c&o=0138P Elements and Ephemeris for 138P/Shoemaker-Levy] – Minor Planet Center
- [http://cometography.com/pcomets/138p.html 138P at Kronk's Cometography]
评论 (0)