赫琳-勞倫斯彗星

外部連結

• [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=152P;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=152P Horizons Ephemeris]
• [http://www.aerith.net/comet/catalog/0152P/index.html 152P/Helin-Lawrence] – Seiichi Yoshida @ aerith.net
• [https://web.archive.org/web/20160304084932/http://scully.cfa.harvard.edu/cgi-bin/returnprepeph.cgi?d=c&o=0152P Elements and Ephemeris for 152P/Helin-Lawrence] – Minor Planet Center
• [http://cometography.com/pcomets/152p.html 152P at Kronk's Cometography]