Donald Machholz

Han var førende i sin innsats for å oppdage kometer ved hjelp av ulike typer kikkerter, herunder noen han konstruerte selv. Han skal ha bidratt til å identifisere tolv kometer. Gjennom 50 år brukte Machholz mer enn 9000 timer på kometjakt.^[3][4]

Machholz var en av initiativtagerne til Messier Marathon, en konkurranse som går ut på å påvise samtlige objekter i Messierkatalogen i løpet av én natt.

Machholz døde den 9. august 2022 på sin ranch i Mohave County i Arizona i en alder av 69 år,^[5] avkomplikasjoner forårsaket av covid-19.^[6][7][8]

• 1978: Comet Machholz (1978l)
• 1985: Comet Machholz (1985e)
• 1986: Comet 96P/Machholz
• 1988: Comet Machholz (1988j)
• 1992: Comet Tanaka-Machholz (1992d)
• 1992: Comet Machholz (1992k)
• 1994: Comet Nakamura-Nishimura-Machholz (1994m)
• 1994: Comet 141P/Machholz 2
• 1994: Comet Machholz 1994r
• 2004: Comet Machholz (C/2004 Q2)
• 2010: Comet Machholz C/2010 F4
• 2018: C/2018 V1 (Machholz-Fujikawa-Iwamoto)

• The Observing Guide to the Messier Marathon: A Handbook and Atlas
• Decade of Comets: A Study of the 33 Comets Discovered by Amateur Astronomers Between 1975 and 1984
• An observer's guide to comet Hale-Bopp: Making the most of Comet Hale-Bopp: when and where to observe Comet Hale-Bopp and what to look for

• Associated Press (June 16, 1985) "Amateur Astronomer Nails Down His Second Comet" Los Angeles Times Retrieved December 29, 2016
• Jet Propulsion Laboratory (October 14, 1994) "MACHHOLZ'S BANNER YEAR" Jet Propulsion Laboratory
• Library of Congress (2002) "Machholz, Don 1952–" Library of Congress
• Joe Rao (September 17, 2004) "Newfound Comet Set for Winter Display" Space.com
• Debi Drake (May 22, 2005) "Meet The Comet Hunter: Don Machholz" American Profile AMG/Parade
• Alan MacRobert (December 2, 2008) "A Very Oddball Comet" Sky & Telescope Retrieved December 2, 2008
• Jeanna Bryner (December 2, 2008) "Odd Comet Possibly from Another Star System" Space.com
• Roger W. Sinnott (March 27, 2010) "New Comet Machholz" Sky & Telescope Retrieved March 30, 2010.
• Brooks Hays (November 3, 2017) "SOHO Spacecraft Spots Comet Machholz 96P, A Return Visitor" UPI
• Gareth V. Williams (November 11, 2018) "MPEC 2018-V151: COMET C/2018 V1 (Machholz-Fujikawa-Iwamoto)" Minor Planet Center.
• Bob King (November 9, 2018) "Amateur Don Machholz Discovers His 12th Comet!" Sky & Telescope
• MPEC 2018-V151: COMET C/2018 V1 (Machholz-Fujikawa-Iwamoto)
• Bob King (November 11, 2018) Arizona Amateur Discovers New Dawn Comet — Here’s How To Find It
• Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto) Sky Charts and Coordinates Arkivert 15. november 2018 hos Wayback Machine.
• JPL viewer NASA

• Don Machholz