# David H. Levy

David Howard Levy (born May 22, 1948) is a Canadian amateur astronomer, science writer and discoverer of comets and minor planets, who co-discovered Comet Shoemaker–Levy 9 in 1993, which collided with the planet Jupiter in 1994.

## Biography

Levy was born in Montreal, Quebec, Canada, in 1948. He developed an interest in astronomy at an early age. However, he pursued and received bachelor's and master's degrees in English literature.
Levy went on to discover 23 comets, either independently or with Gene and Carolyn Shoemaker. He has written 34 books, mostly on astronomical subjects, such as The Quest for Comets, a biography of Pluto-discoverer Clyde Tombaugh in 2006, and his tribute to Gene Shoemaker in Shoemaker by Levy. He has provided periodic articles for Sky and Telescope magazine, as well as Parade Magazine, Sky News and, most recently, Astronomy Magazine.
Periodic comets that Levy co-discovered include 118P/Shoemaker–Levy, 129P/Shoemaker–Levy, 135P/Shoemaker–Levy, 137P/Shoemaker–Levy, 138P/Shoemaker–Levy, 145P/Shoemaker–Levy, and 181P/Shoemaker–Levy. In addition, Levy is the sole discoverer of two periodic comets: 255P/Levy and P/1991 L3.
On February 28, 2011, Levy was awarded a Ph.D. from the Hebrew University of Jerusalem for his successful completion of his thesis "The Sky in Early Modern English Literature: A Study of Allusions to Celestial Events in Elizabethan and Jacobean Writing, 1572–1620."
Starting in 2015, Levy has been donating his observing logs, which he has kept continuously since 1956, his personal journals since 1958, and his comet search records since 1965, to the Linda Hall Library of Science Library in Kansas City. The observing records are also on-line at the website of the Royal Astronomical Society of Canada.
He lives in Vail, Arizona and was married to Wendee Levy from 1997 until her death in 2022. Levy and his wife hosted a weekly internet radio talk show on astronomy, which ended on February 3, 2011, with a planned "Final Show". Show archives are available in WMA and MP3 formats. Levy is President of the National Sharing the Sky Foundation and a Master of Astronomy with DeTao Masters Academy (DTMA).
Levy's autobiography, "A Nightwatchman's journey: the Road Not Taken" was published in June 2019 by the Royal Astronomical Society of Canada.

## Awards

The main-asteroid 3673 Levy was named in his honour. Levy was awarded the C.A. Chant Medal of the Royal Astronomical Society of Canada in 1980. Levy was recipient of the 1990 G. Bruce Blair Medal. In 1993 he won the Amateur Achievement Award of the Astronomical Society of the Pacific. In 2007, Levy received the Smithsonian Astrophysical Observatory's Edgar Wilson Award for the discovery of comets. In 2008, a special edition telescope, "The Comet Hunter" was co-designed by Levy.
Together with Martyn Ives, David Taylor, and Benjamin Woolley, Levy won a 1998 News & Documentary Emmy Award in the "Individual Achievement in a Craft, Writer" category for the script of the documentary 3 Minutes to Impact produced by York Films for the Discovery Channel.

## Discoveries

Minor planets discovered: 61 :
* see § List of discovered minor planets

### Comets
#### Visual

* Comet Levy-Rudenko, 1984t, C/1984 V1, Nov 14, 1984
* Comet Levy, 1987a, C/1987 A1, January 5, 1987
* Comet Levy, 1987y, C/1987 T1, October 11, 1987
* Comet Levy, 1988e, C/1988 F1, March 19, 1988
* Comet Okazaki-Levy-Rudenko, 1989r, C/1989 Q1, August 25, 1989
* Comet Levy, 1990c, C/1990 K1, May 20, 1990
* Periodic Comet Levy, P/1991 L3, June 14, 1991
* Comet Takamizawa-Levy, C/1994 G1, April 15, 1994.
* Periodic Comet 255P/Levy, October 2, 2006.

#### Photographic, as part of team of Eugene and Carolyn Shoemaker and David Levy

* Periodic Comet Shoemaker-Levy 1, 1990o, P/1990 V1
* Periodic Comet Shoemaker-Levy 2, 1990p, 137 P/1990 UL3
* Comet Shoemaker-Levy, 1991d C/1991 B1
* Periodic Comet Shoemaker-Levy 3, 1991e, 129P/1991 C1
* Periodic Comet Shoemaker-Levy 4, 1991f, 118P/1991 C2
* Periodic Comet Shoemaker-Levy 5, 1991z, 145P/1991 T1
* Comet Shoemaker-Levy, 1991a1, C/1991 T2
* Periodic Comet Shoemaker-Levy 6, 1991b1, P/1991 V1
* Periodic Comet Shoemaker-Levy 7, 1991d1, 138P/1991 V2
* Periodic Comet Shoemaker-Levy 8, 1992f, 135P/1992 G2
* Periodic Comet Shoemaker–Levy 9, 1993e, D/1993 F2
* Comet Shoemaker-Levy, 1993h, C/1993 K1
* Comet Shoemaker-Levy, 1994d C/1994 E2
* Comet Jarnac, P/2010 E2 (David Levy, Wendee Levy, Tom Glinos)

### Other

* Nova Cygni 1975, August 30, 1975 (independent discovery)
* Nova Cygni 1978, September 12, 1978 (independent discovery)
* Comet Hartley-IRAS (P/1983 V1), November 30, 1983 (independent discovery)
* Comet Shoemaker 1992y, C/1992 U1 (aided in discovery)
* Periodic Comet Shoemaker 4, 1994k, P/1994 J3 (aided in discovery)
* Asteroid (5261) Eureka, the first Martian Trojan asteroid, with Henry E. Holt, June 1990
* Established the cataclysmically recurring nature of 1215-17 TV Corvi (Tombaugh's Star), August 1990

### Minor planets

List of minor planets discovered by David Levy :
| Name | Discovery Date | Listing |
| 5261 Eureka | 20 June 1990 | list |
| 5852 Nanette | 19 April 1991 | list |
| 6398 Timhunter | 10 February 1991 | list |
| 6401 Roentgen | 15 April 1991 | list |
| 6485 Wendeesther | 25 October 1990 | list |
| 6670 Wallach | 4 June 1994 | list |
| 6715 Sheldonmarks | 22 August 1990 | list |
| 6914 Becquerel | 3 April 1992 | list |
| 7344 Summerfield | 4 June 1992 | list |
| 8021 Walter | 22 October 1990 | list |
| 8358 Rickblakley | 4 November 1989 | list |
| 9070 Ensab | 23 July 1993 | list |
| 9083 Ramboehm | 28 November 1994 | list |
| 10332 Défi | 13 May 1991 | list |
| 10346 Triathlon | 2 April 1992 | list |
| 11548 Jerrylewis | 25 November 1992 | list |
| 11569 Virgilsmith | 27 May 1993 | list |
| 11911 Angel | 4 June 1992 | list |
| 11941 Archinal | 23 May 1993 | list |
| 13057 Jorgensen | 13 November 1990 | list |
| 13111 Papacosmas | 23 July 1993 | list |
| 13123 Tyson | 16 May 1994 | list |
| 13615 Manulis | 28 November 1994 | list |
| 14429 Coyne | 3 December 1991 | list |
| 15276 Diebel | 14 April 1991 | list |
| 15294 Underwood | 7 November 1991 | list |
| 15321 Donnadean | 13 August 1993 | list |
| 15779 Scottroberts | 26 July 1993 | list |
| 16514 Stevelia | 11 November 1990 | list |
| 16669 Rionuevo | 8 December 1993 | list |
| 17493 Wildcat | 31 December 1991 | list |
| 18368 Flandrau | 15 April 1991 | list |
| 18434 Mikesandras | 12 March 1994 | list |
| Name | Discovery Date | Listing |
| 19980 Barrysimon | 22 November 1989 | list |
| 20084 Buckmaster | 6 April 1994 | list |
| 22312 Kelly | 14 April 1991 | list |
| 22338 Janemojo | 3 June 1992 | list |
| 24778 Nemsu | 24 May 1993 | list |
| 24779 Presque Isle | 23 July 1993 | list |
| 27776 Cortland | 25 February 1992 | list |
| 27810 Daveturner | 23 July 1993 | list |
| 29292 Conniewalker | 24 May 1993 | list |
| 30840 Jackalice | 15 April 1991 | list |
| 30934 Bakerhansen | 16 November 1993 | list |
| 30935 Davasobel | 8 January 1994 | list |
| 32890 Schwob | 8 January 1994 | list |
| 32897 Curtharris | 1 August 1994 | list |
| 37588 Lynnecox | 15 April 1991 | list |
| 37601 Vicjen | 3 April 1992 | list |
| 43793 Mackey | 13 November 1990 | list |
| 117032 Davidlane | 14 May 2004 | list |
| 144769 Zachariassen | 19 April 2004 | list |
| 144907 Whitehorne | 16 December 2004 | list |
| 157421 Carolpercy | 8 October 2004 | list |
| 170909 Bobmasterson | 12 December 2004 | list |
| 170995 Ritajoewright | 3 March 2005 | list |
| 175152 Marthafarkas | 3 March 2005 | list |
| 245158 Thomasandrews | 13 October 2004 | list |
| 271763 Hebrewu | 17 September 2004 | list |
| 294727 Dennisritchie | 31 January 2008 | list |
| 300909 Kenthompson | 30 January 2008 | list |
| 510045 Vincematteo | 4 March 2010 | list |
| 518523 Bryanshumaker | 16 September 2006 | list |
| Co-discovery made with: $^A$ H. E. Holt $^B$ C. S. Shoemaker $^C$ E. M. Shoemaker $^D$ T. Glinos $^E$ W. Levy |||