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{{Infobox planet
#REDIRECT [[List of minor planets: 3001–4000]]
| minorplanet = yes
{{R to list entry}}
| name = 3192 A'Hearn
| background = #FFFFC0
| image =
| caption =
| discovery_ref = &thinsp;<ref name="jpldata" />
| discovered = 30 January 1982
| discoverer = [[Edward Bowell|E. Bowell]]
| discovery_site = [[Anderson Mesa Station]]
| mp_name = 3192 A'Hearn
| alt_names = {{mp|1982 BY|1}}{{·}}1975 JN
| named_after = [[Michael A'Hearn]]<br />{{small|(astronomer)}}<ref name="springer" />
| mp_category = [[main-belt]]{{·}}{{small|(inner)}}&thinsp;<ref name="lcdb" />
| orbit_ref = &thinsp;<ref name="jpldata" />
| epoch = 27 June 2015 ([[Julian day|JD]] 2457200.5)
| uncertainty = 0
| observation_arc = {{nowrap|40.18 yr (14,676 days)}}
| aphelion = 2.7785 [[Astronomical unit|AU]]
| perihelion = 1.9751 AU
| semimajor = 2.3768 AU
| eccentricity = 0.1690
| period = 3.66 [[Julian year (astronomy)|yr]] (1,338 days)
| mean_anomaly = 36.180[[degree (angle)|°]]
| inclination = 2.8791°
| asc_node = 56.732°
| arg_peri = 91.536°
| dimensions = 5.66 km {{small|(caculated)}}<ref name="lcdb" />
| rotation = 3.160 [[hour|h]]<ref name="Hasegawa-2012a" />
| albedo = 0.20 {{small|(assumed)}}<ref name="lcdb" />
| spectral_type = [[SMASS classification|SMASS]] = [[C-type asteroid|C]]&thinsp;<ref name="jpldata" /><br />[[C-type asteroid|C]]&thinsp;<ref name="lcdb" />
| abs_magnitude = 13.6<ref name="jpldata" />
}}

'''3192 A'Hearn''', provisional designation {{mp|1982 BY|1}}, is a carbonaceous [[asteroid]] from the inner regions of the [[asteroid belt]], about 6 kilometers in diameter. It was discovered by American astronomer [[Edward Bowell]] at Lowell's U.S. [[Anderson Mesa Station]] in Flagstaff, Arizona, on 30 January 1982.<ref name="MPC-A'Hearn" />

The [[C-type asteroid|C-type]] asteroid orbits the Sun at a distance of 2.0–2.8&nbsp;[[Astronomical unit|AU]] once every 3 years and 8 months (1,338 days). Its orbit shows an [[orbital eccentricity|eccentricity]] of 0.17 and is [[orbital inclination|tilted]] by 3 degrees to the plane of the [[ecliptic]].<ref name="jpldata" /> A photometric [[light-curve]] analysis in 2004 rendered a [[rotation period]] of 3.16 hours.<ref name="Hasegawa-2012a" /> The ''Collaborative Asteroid Lightcurve Link'' assumes a [[astronomical albedo|albedo]] of 0.20,<ref name="lcdb" /> an unusually high value for a carbonaceous body, otherwise known for their low albedos typically around 0.06.

The minor planet was named in honor of American astronomer [[Michael A'Hearn]] (b.&thinsp;1940). He was a professor of astronomy at the [[University of Maryland]] and a prominent student of cometary physics. He has pursued coordinated spectroscopic and spectrophotometric observations of comets spanning the spectral interval from the vacuum ultraviolet to the radio region. A'Hearn participated in the 1983 discovery with the [[IUE spacecraft]] of diatomic sulphur in the spectrum of [[Comet IRAS–Araki–Alcock]] and has made many other important contributions to our current understanding of comets.<ref name="springer" />

== References ==
{{reflist
|refs=

<ref name="lcdb">{{cite web
|title=LCDB Data for (3192) A'Hearn
|publisher=Asteroid Lightcurve Database (LCDB)
|url=http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=3192%7CA'Hearn
|accessdate=January 2016}}</ref>

<ref name="jpldata">{{cite web
|type=2015-07-12 last obs.
|title=JPL Small-Body Database Browser: 3192 A'Hearn (1982 BY1)
|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003192
|publisher=Jet Propulsion Laboratory
|accessdate=January 2016}}</ref>

<ref name="springer">{{cite book
|url=http://link.springer.com/referenceworkentry/10.1007/978-3-540-29925-7_3193
|title=Dictionary of Minor Planet Names – (3192) A’Hearn
|last=Schmadel |first=Lutz D.
|publisher=Springer Berlin Heidelberg
|page=265
|date=2003
|isbn=978-3-540-29925-7
|accessdate=January 2016}}</ref>

<ref name="MPC-A'Hearn">{{cite web
|title=3192 A'Hearn (1982 BY1)
|work=Minor Planet Center
|url=http://www.minorplanetcenter.net/db_search/show_object?object_id=3192
|accessdate=January 2016}}</ref>

<ref name="Hasegawa-2012a">{{cite journal
|display-authors = 6
|first1 = S. |last1 = Hasegawa
|first2 = S. |last2 = Miyasaka
|first3 = H. |last3 = Mito
|first4 = Y. |last4 = Sarugaku
|first5 = T. |last5 = Ozawa
|first6 = D. |last6 = Kuroda
|first7 = S. |last7 = Nishihara
|first8 = A. |last8 = Harada
|first9 = M. |last9 = Yoshida
|first10 = K. |last10 = Yanagisawa
|first11 = Y. |last11 = Shimizu
|first12 = S. |last12 = Nagayama
|first13 = H. |last13 = Toda
|first14 = K. |last14 = Okita
|first15 = N. |last15 = Kawai
|first16 = M. |last16 = Mori
|first17 = T. |last17 = Sekiguchi
|first18 = M. |last18 = Ishiguro
|first19 = M. |last19 = Abe
|date = May 2012
|title = Lightcurve Survey of V-Type Asteroids. Observations Until 2005
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012arXiv1204.0548H
|journal = Asteroids
|bibcode = 2012arXiv1204.0548H
|access-date= January 2016}}</ref>

}} <!-- end of reflist -->

== External links ==
* [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info])
* [https://books.google.se/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
* [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Observatoire de Genève, Raoul Behrend
* [http://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
* {{JPL small body|title=3192 A'Hearn (1982 BY1)|id=2003192}}

{{Minor planets navigator|3191 Svanetia|3193 Elliot}}
{{Small Solar System bodies}}


{{DEFAULTSORT:003192}}
{{DEFAULTSORT:003192}}
[[Category:Main-belt asteroids]]
[[Category:Main-belt asteroids|003192]]
[[Category:Numbered asteroids]]
[[Category:Asteroids named for people|A'Hearn]]
[[Category:Asteroids named for people|A'Hearn]]
[[Category:Discoveries by Edward L. G. Bowell]]
[[Category:Discoveries by Edward L. G. Bowell|A'Hearn]]
[[Category:Astronomical objects discovered in 1982|19820130]]
[[Category:Astronomical objects discovered in 1982|19820130]]
[[Category:C-type asteroids (SMASS)]]
[[Category:C-type asteroids (SMASS)|003192]]


{{Beltasteroid-stub}}

Revision as of 01:33, 4 January 2016

3192 A'Hearn
Discovery [1]
Discovered byE. Bowell
Discovery siteAnderson Mesa Station
Discovery date30 January 1982
Designations
3192 A'Hearn
Named after
Michael A'Hearn
(astronomer)[2]
1982 BY1 · 1975 JN
main-belt · (inner) [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc40.18 yr (14,676 days)
Aphelion2.7785 AU
Perihelion1.9751 AU
2.3768 AU
Eccentricity0.1690
3.66 yr (1,338 days)
36.180°
Inclination2.8791°
56.732°
91.536°
Physical characteristics
Dimensions5.66 km (caculated)[3]
3.160 h[4]
0.20 (assumed)[3]
SMASS = C [1]
C [3]
13.6[1]

3192 A'Hearn, provisional designation 1982 BY1, is a carbonaceous asteroid from the inner regions of the asteroid belt, about 6 kilometers in diameter. It was discovered by American astronomer Edward Bowell at Lowell's U.S. Anderson Mesa Station in Flagstaff, Arizona, on 30 January 1982.[5]

The C-type asteroid orbits the Sun at a distance of 2.0–2.8 AU once every 3 years and 8 months (1,338 days). Its orbit shows an eccentricity of 0.17 and is tilted by 3 degrees to the plane of the ecliptic.[1] A photometric light-curve analysis in 2004 rendered a rotation period of 3.16 hours.[4] The Collaborative Asteroid Lightcurve Link assumes a albedo of 0.20,[3] an unusually high value for a carbonaceous body, otherwise known for their low albedos typically around 0.06.

The minor planet was named in honor of American astronomer Michael A'Hearn (b. 1940). He was a professor of astronomy at the University of Maryland and a prominent student of cometary physics. He has pursued coordinated spectroscopic and spectrophotometric observations of comets spanning the spectral interval from the vacuum ultraviolet to the radio region. A'Hearn participated in the 1983 discovery with the IUE spacecraft of diatomic sulphur in the spectrum of Comet IRAS–Araki–Alcock and has made many other important contributions to our current understanding of comets.[2]

References

  1. ^ a b c d e "JPL Small-Body Database Browser: 3192 A'Hearn (1982 BY1)" (2015-07-12 last obs.). Jet Propulsion Laboratory. Retrieved January 2016. {{cite web}}: Check date values in: |accessdate= (help)
  2. ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (3192) A’Hearn. Springer Berlin Heidelberg. p. 265. ISBN 978-3-540-29925-7. Retrieved January 2016. {{cite book}}: Check date values in: |accessdate= (help)
  3. ^ a b c d e "LCDB Data for (3192) A'Hearn". Asteroid Lightcurve Database (LCDB). Retrieved January 2016. {{cite web}}: Check date values in: |accessdate= (help)
  4. ^ a b Hasegawa, S.; Miyasaka, S.; Mito, H.; Sarugaku, Y.; Ozawa, T.; Kuroda, D.; et al. (May 2012). "Lightcurve Survey of V-Type Asteroids. Observations Until 2005". Asteroids. Bibcode:2012arXiv1204.0548H. Retrieved January 2016. {{cite journal}}: Check date values in: |access-date= (help)
  5. ^ "3192 A'Hearn (1982 BY1)". Minor Planet Center. Retrieved January 2016. {{cite web}}: Check date values in: |accessdate= (help)

External links


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