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	\|work = Minor Planet Center		\|work = Minor Planet Center
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	<ref name="springer">{{~~cite book~~		<ref name="springer">{{Citiranje knjige
	\|title=Dictionary of Minor Planet Names – (1777) Gehrels		\|title=Dictionary of Minor Planet Names – (1777) Gehrels
	\|last=Schmadel \|first=Lutz D.		\|last=Schmadel \|first=Lutz D.

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'''Tom Gehrels''' ([[Haarlemmermeer]], Nizozemska [[21. veljače]] [[astronomija u 1925.|1925.]] - [[Tucson, Arizona]], [[11. srpnja]] [[astronomija u 2011.|2011.]]) [[nizozemska|nizozemsko]]-[[SAD|američki]] je [[astronom]].

Bio je u specijalnim zračnim postrojbama u Europi i na Dalekom Istoku od 1944. do 1948. godine. 1951. godine diplomirao je astronomiju i fiziku na sveučilištu u Leidenu. Doktorirao je astronomiju i astrofiziku na Sveučilištu Chicaga 1956. godine. Od 1961. do 2011. bio je profesor planetnih znanosti i astronomije na [[Sveučilište Arizona|Sveučilištu u Arizoni]]. Suosnivač je projekta [[Spacewatch]] za pronalaženje [[NEA|asteroida blizu Zemlje]].

{| class="wikitable floatright" style="font-size: 0.9em; width: 270px;"
|+ Otkriveni [[komet]]i: (izbor)
|-
| [[64P/Swift-Gehrels]]* || 8. veljače 1973.
|-
| [[78P/Gehrels|78P/Gehrels 2]] || 29. rujna 1973.
|-
| [[82P/Gehrels|82P/Gehrels 3]] || 27. listopada 1975.
|-
! colspan=2 style="font-weight: normal; text-align: left; padding: 4px 12px;" |* Otkrio 1889. [[Lewis A. Swift|Swift]], Gehrels opet otkrio [[izgubljeni komet]]
|}

{| class="wikitable floatright" style="font-size: 0.9em; width: 270px;"
|+ Otkrio [[mali planet|malih planeta]]: 4645 <ref name="MPC-Discoverers" /> Istaknuti su:
|-
| [[1778 Alfvén]] || 26. rujna 1960.
|-
| [[1864 Daedalus]] || 24. ožujka 1971.
|-
| [[1873 Agenor]] || 25. ožujka 1971.
|-
| [[1979 Sakharov]] || 24. rujna 1960.
|-
| [[2247 Hiroshima]] || 24. rujna 1960.
|}

Pionir je prvog [[fotometrija (astronomija)|fotometričkog]] sustava [[asteroid]]a 1950-ih, ovisnosti valne dužine [[polarizacija (val)|polarizacije]] [[zvijezda]] i [[planet]]a 1960-ih, što je rezultiralo širokim nizom radova u [[Astronomical Journal]]u.

He discovered, jointly with the husband and wife team of [[Cornelis Johannes van Houten]] and [[Ingrid van Houten-Groeneveld]], over 4000 [[asteroid]]s, including [[Apollo asteroid]]s, [[Amor asteroid]]s, as well as dozens of [[Trojan asteroid]]s. That was done in a sky survey using the [[Samuel Oschin telescope|48-inch Schmidt telescope]] at [[Palomar Observatory]] and shipping the plates to the two Dutch astronomers at [[Leiden Observatory]], who analyzed them for new asteroids. The trio are jointly credited with several thousand discoveries. Gehrels also discovered a number of [[comet]]s.

Bio je glavni istraživač za pokus sa slikovnim [[fotopolarimetar|fotopolarimetrom]] na letjelicama [[Pioneer 10]] i [[Pioneer 11]] prilikom njihovih prolijetanja pored Jupitera i Saturna 1970-ih.

Među Tomovom djecom istakao se [[Neil Gehrels]]. Tom je umro u Tucsonu, Arizona. Mali planet [[1777 Gehrels]] ponio je njegovo ime njemu u čast.<ref name="springer" />

== Knjige ==
* ''Physical Studies of Minor Planets'', edited by Tom Gehrels (1971), NASA SP-267
* ''Planets Stars and Nebulae Studied With Photopolarimetry'', edited by Tom Gehrels (1974) Tucson: [[University of Arizona Press]] {{ISBN|0-8165-0428-8}}
* ''Jupiter: Studies of the Interior, Atmosphere, Magnetosphere, and Satellites'', edited by Tom Gehrels and Mildred Shapley Matthews (1976) Tucson: University of Arizona Press {{ISBN|0-8165-0530-6}}
* ''Protostars & Planets: Studies of Star Formation and of the Origin of the Solar System'', edited by Tom Gehrels and Mildred Shapley Matthews (1978) Tucson: [[University of Arizona Press]] {{ISBN|0-8165-0674-4}}
* ''Asteroids'', edited by Tom Gehrels and Mildred Shapley Matthews (1979), {{ISBN|0-8165-0695-7}}
* ''Saturn'', edited by Tom Gehrels and Mildred Shapley Matthews (1984) Tucson: [[University of Arizona Press]] {{ISBN|0-8165-0829-1}}
* ''Asteroids II'', edited by Richard P. Binzel, Tom Gehrels, and Mildred Shapely Matthews (1989)Tucson: [[University of Arizona Press]] {{ISBN|0-8165-1123-3}}
* ''Hazards Due to Comets and Asteroids'', edited by Tom Gehrels, Mildred Shapley Matthews, and A. M. Schumann (1994) Tucson: [[University of Arizona Press]] {{ISBN|0-8165-1505-0}}
* ''On the Glassy Sea, in Search of a Worldview'', Tom Gehrels (2007, originally published in 1988), {{ISBN|1-4196-8247-4}}
* ''Survival Through Evolution: From Multiverse to Modern Society'', Tom Gehrels (2007), {{ISBN|1-4196-7055-7}}
* "The Chandra Multiverse", in From Big Bang to Galactic Civilizations: A Big History Anthology, Volume 3, The Ways that Big History Works: Cosmos, Life, Society, and our Future, eds. Barry Rodrigue, Leonid Grinin, Andrey Korotayev, Delhi: Primus Books, 2017, pp. 45-70.

== Izvori ==
{{reflist
| refs =

<ref name="MPC-Discoverers">{{cite web
|title = Minor Planet Discoverers (by number)
|work = Minor Planet Center
|url = http://www.minorplanetcenter.net/iau/lists/MPDiscsNum.html
|date = 20 August 2016
|accessdate = 25 August 2016}}</ref>

<ref name="springer">{{cite book
|title=Dictionary of Minor Planet Names – (1777) Gehrels
|last=Schmadel |first=Lutz D.
|publisher=Springer Berlin Heidelberg
|page=142
|date=2003
|isbn=978-3-540-29925-7
|doi=10.1007/978-3-540-29925-7_1778
|chapter = (1777) Gehrels}}</ref>

}} 

== Vanjske poveznice ==
* [https://academictree.org/astronomy/peopleinfo.php?pid=689856 Tom Gehrels] - Astronomy Tree
* [https://web.archive.org/web/20150815220355/http://www.lpl.arizona.edu/people/faculty/gehrels.html Gehrels] Stranica na Sveučilištu Arizone
* [http://uanews.org/story/astronomer-tom-gehrels-1925-2011 Osmrtnica] na Sveučilištu Arizone
* [http://arboretum.arizona.edu/honoring-prof-tom-gehrels Memorial] na Sveučilištu Arizone

{{GLAVNIRASPORED:Gehrels, Tom}}
[[Kategorija:Američki astronomi]]
[[Kategorija:Nizozemski astronomi]]
[[Kategorija:Otkrivači kometa]]
[[Kategorija:Otkrivači asteroida]]

Tom Gehrels - Povijest promjena

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