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{{Use dmy dates|date=December 2018}}
{{Infobox planet
{{Infobox planet
| minorplanet = yes
| minorplanet = yes
| name = 11665 Dirichlet
| background = #FFFFC0
| background = #D6D6D6
| apsis =
| image =
| name = Dirichlet
| symbol =
| image_size =
| image =
| caption =
| discovery_ref = <ref name="MPC-object" />
| caption =
| discoverer = [[Paul Comba|P. G. Comba]]
| discovery_ref = <ref name="MPC">{{cite web|url=http://www.cfa.harvard.edu/iau/lists/NumberedMPs010001.html |title=Discovery Circumstances: Numbered Minor Planets (10001)-(15000) |accessdate=7 December 2008 |publisher=IAU: Minor Planet Center |archiveurl=https://web.archive.org/web/20090111211536/http://www.cfa.harvard.edu/iau/lists/NumberedMPs010001.html |archivedate=11 January 2009 |deadurl=no |df= }}</ref>
| discovery_site = [[Prescott Observatory|Prescott Obs.]]
| discoverer = [[Paul G. Comba]]
| discovered = 14 April 1997
| discovery_site = [[Prescott Observatory|Prescott]]
| mpc_name = (11665) Dirichlet
| discovered = 14 April 1997
| alt_names = {{mp|1997 GL|28}}
| mp_name = (11665) Dirichlet
| pronounced =
| alt_names = 1997 GL28
| named_after = [[Peter Gustav Lejeune Dirichlet]]
| named_after = [[Peter Gustav Lejeune Dirichlet]]<ref name="MPC-object" /><br />{{small|(German mathematician)}}
| mp_category = [[main-belt]]<ref name="MPC-object" />{{·}}({{small|[[Kirkwood gap|outer]]}})<ref name="jpldata" /><br />[[Griqua group|Griqua]]<ref name="Roig-2002" /><ref name="AstDys-object" />
| mp_category =
| orbit_ref = <ref name="jpldata" />
| orbit_ref = <ref>{{cite web | url=http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.0&n=11665 | title=(11665) Dirichlet | accessdate=10 December 2008 | work=AstDyS | publisher=[[University of Pisa]] | location=Italy }}</ref><ref name="jpldata">{{Cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=11665;cad=1 |title=11665 Dirichlet (1997 GL28) |work=[[JPL Small-Body Database]] |publisher=[[NASA]]/[[Jet Propulsion Laboratory]] |access-date=9 April 2016}}</ref>
| epoch = 13 January 2016 ([[Julian day|JD]] 2457400.5)
| epoch = 27 April 2019 ([[Julian day|JD]] 2458600.5)
| uncertainty = 0
| aphelion = {{Convert|3.76302|AU|Gm|abbr=on|lk=on}}
| observation_arc = 23.97 [[Julian year (astronomy)|yr]] (8,756 d)
| perihelion = {{Convert|2.79165|AU|Gm|abbr=on}}
| aphelion = 3.7625 [[Astronomical unit|AU]]
| semimajor = {{Convert|3.27734|AU|Gm|abbr=on}}
| perihelion = 2.7963 AU
| eccentricity = 0.148195
| semimajor = 3.2794 AU
| period = 5.93 [[Julian year (astronomy)|yr]] (2167.1 [[Julian year (astronomy)|d]])
| eccentricity = 0.1473
| avg_speed =
| period = 5.94 yr (2,169 d)
| inclination = 15.7878°
| mean_anomaly = 298.55[[Degree (angle)|°]]
| asc_node = 215.227°
| mean_motion = {{Deg2DMS|0.1660|sup=ms}} / day
| mean_anomaly = 99.5781[[Degree (angle)|°]]
| arg_peri = 309.203°
| inclination = 15.787°
| asc_node = 215.21°
| satellites =
| arg_peri = 309.39°
| dimensions =
| tisserand = 3.0980
| mass =
| mean_diameter = {{val|6.803|0.358|ul=km}}<ref name="Masiero-2011" /><ref name="Ferret" />
| density =
| surface_grav =
| rotation =
| albedo = {{val|0.087|0.014}}<ref name="Masiero-2011" />
| escape_velocity =
| sidereal_day =
| spectral_type =
| abs_magnitude = 14.1<ref name="MPC-object" /><ref name="jpldata" />
| axial_tilt =
| pole_ecliptic_lat =
| pole_ecliptic_lon =
| albedo =
| temperatures=
| temp_name1 =
| mean_temp_1 =
| max_temp_1 =
| temp_name2 =
| max_temp_2 =
| spectral_type =
| abs_magnitude = 14.1
| mean_motion = {{Deg2DMS|0.166120|sup=ms}} / day
| observation_arc = 7645 days (20.93 yr)
| uncertainty = 0
| moid = {{Convert|1.82645|AU|Gm|abbr=on}}
| jupiter_moid = {{Convert|1.37178|AU|Gm|abbr=on}}
| tisserand = 3.098
}}
}}

'''11665 Dirichlet''' (1997 GL28) is an [[Outer asteroid belt|outer main-belt]] [[asteroid]] discovered on April 14, 1997, by [[Paul G. Comba]] at [[Prescott Observatory|Prescott]].<ref name="MPC"/> It is one of very few asteroids located in the 2 : 1 [[orbital resonance|mean motion resonance]] with [[Jupiter]].<ref>{{cite journal | author=Roig | title=Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution | journal=[[Monthly Notices of the Royal Astronomical Society]] | volume=335 | issue=2 | pages=417–431 | year=2002 | doi=10.1046/j.1365-8711.2002.05635.x | last2=Nesvorny | first2=D. | last3=Ferraz-Mello | first3=S. | bibcode=2002MNRAS.335..417R |display-authors=etal}}</ref>
'''11665 Dirichlet''', provisional designation {{mp|1997 GL|28}}, is a [[Griqua asteroid]] and a [[Orbital resonance|2:1 Jupiter librator]] from the outermost regions of the [[asteroid belt]], approximately {{convert|6.8|km|mi|abbr=off|sigfig=1|sp=us}} in diameter. It was discovered on 14 April 1997, by astronomer [[Paul Comba]] at the [[Prescott Observatory]] in Arizona, United States. The asteroid was named after German mathematician [[Peter Gustav Lejeune Dirichlet]].<ref name="MPC-object" />

== Orbit and classification ==

''Dirichlet'' is a [[Griqua asteroid]], a small dynamical group of asteroids located in the otherwise sparsely populated [[Hecuba gap]] (2:1 [[Orbital resonance|resonance]] with [[Jupiter]]), which is one of the largest [[Kirkwood gap]]s in the asteroid belt.<ref name="Roig-2002" /><ref name="AstDys-object" /> It orbits the Sun at a distance of 2.8–3.8&nbsp;[[Astronomical unit|AU]] once every 5 years and 11 months (2,169 days; [[semi-major axis]] of 3.28&nbsp;AU). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.15 and an [[orbital inclination|inclination]] of 16[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> The body's [[observation arc]] begins prior to its official discovery observation with a [[precovery]] taken by [[Spacewatch]] in October 1994.<ref name="MPC-object" />

== Naming ==

This [[minor planet]] was named after German mathematician [[Peter Gustav Lejeune Dirichlet]] (1805–1859), who was the successor of [[Carl Friedrich Gauss]] and the predecessor of [[Bernhard Riemann]] at the [[University of Göttingen]]. His contributions include the first rigorous proof that the [[Fourier series]] converges. The official {{MoMP|11665|naming citation}} was published by the [[Minor Planet Center]] on 23 November 1999 ({{small|[[Minor Planet Circulars|M.P.C.]] 36951}}).<ref name="MPC-Circulars-Archive" />

== Physical characteristics ==

According to the survey carried out by the [[NEOWISE]] mission of NASA's [[Wide-field Infrared Survey Explorer]], ''Dirichlet'' measures 6.8 kilometers in diameter and its surface has an [[astronomical albedo|albedo]] of 0.09.<ref name="Masiero-2011" /><ref name="Ferret" /> As of 2018, no rotational [[lightcurve]] of ''Dirichlet'' has been obtained from [[Photometry (astronomy)|photometric]] observations. The body's [[rotation period]], [[Poles of astronomical bodies|pole]] and shape remain unknown.<ref name="jpldata" /><ref name="lcdb" />


== References ==
== References ==
{{reflist}}
{{reflist|30em|refs=

<ref name="jpldata">{{cite web
|type = 2018-10-16 last obs.
|title = JPL Small-Body Database Browser: 11665 Dirichlet (1997 GL28)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011665
|publisher = [[Jet Propulsion Laboratory]]
|access-date = 4 December 2018}}</ref>

<ref name="MPC-object">{{cite web
|title = 11665 Dirichlet (1997 GL28)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=11665
|access-date = 4 December 2018}}</ref>

<ref name="MPC-Circulars-Archive">{{cite web
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|access-date = 4 December 2018}}</ref>

<ref name="Ferret">{{cite web
|title = Asteroid 11665 Dirichlet
|work = Small Bodies Data Ferret
|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=11665+Dirichlet
|access-date = 4 December 2018}}</ref>

<ref name="AstDys-object">{{cite web
|title = Asteroid (11665) Dirichlet – Proper elements
|publisher = AstDyS-2, Asteroids – Dynamic Site
|url = https://newton.spacedys.com/astdys/index.php?n=11665&pc=1.1.6
|access-date = 4 December 2018}}</ref>

<ref name="Roig-2002">{{Cite journal
|first1 = F. |last1 = Roig
|first2 = D. |last2 = Nesvorný
|first3 = S. |last3 = Ferraz-Mello
|date = September 2002
|title = Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution [ Erratum: 2002MNRAS.336.1391R ]
|journal = Monthly Notices of the Royal Astronomical Society
|volume = 335
|issue = 2
|pages = 417–431
|bibcode = 2002MNRAS.335..417R
|doi = 10.1046/j.1365-8711.2002.05635.x
|doi-access = free
}}</ref>

<ref name="Masiero-2011">{{cite journal
|display-authors = 6
|first1 = Joseph R. |last1 = Masiero
|first2 = A. K. |last2 = Mainzer
|first3 = T. |last3 = Grav
|first4 = J. M. |last4 = Bauer
|first5 = R. M. |last5 = Cutri
|first6 = J. |last6 = Dailey
|first7 = P. R. M. |last7 = Eisenhardt
|first8 = R. S. |last8 = McMillan
|first9 = T. B. |last9 = Spahr
|first10 = M. F. |last10 = Skrutskie
|first11 = D. |last11 = Tholen
|first12 = R. G. |last12 = Walker
|first13 = E. L. |last13 = Wright
|first14 = E. |last14 = DeBaun
|first15 = D. |last15 = Elsbury
|first16 = T. IV |last16 = Gautier
|first17 = S. |last17 = Gomillion
|first18 = A. |last18 = Wilkins
|date = November 2011
|title = Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M
|journal = The Astrophysical Journal
|volume = 741
|issue = 2
|page = 20
|bibcode = 2011ApJ...741...68M
|doi = 10.1088/0004-637X/741/2/68
|arxiv = 1109.4096
|access-date= 4 December 2018}}</ref>

<ref name="lcdb">{{cite web
|title = LCDB Data for (11665) Dirichlet
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=11665%7CDirichlet
|access-date = 4 December 2018}}</ref>

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


== External links ==
== External links ==
* [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
*[http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=11665+Dirichlet JPL Small-Body Database Browser on 11665 Dirichlet]
* [https://www.minorplanetcenter.net/iau/lists/NumberedMPs010001.html Discovery Circumstances: Numbered Minor Planets (10001)-(15000)] – Minor Planet Center
*{{JPL small body|id=11665}}
* {{AstDys|11665}}
* {{JPL small body}}


{{Minor planets navigator|11664 Kashiwagi|number=11665|11666 Bracker|}}
{{Minor planets navigator |11664 Kashiwagi |number=11665 |11666 Bracker}}
{{Small Solar System bodies}}
{{Small Solar System bodies}}
{{Authority control}}


{{DEFAULTSORT:Dirichlet}}
{{DEFAULTSORT:Dirichlet}}
[[Category:Main-belt asteroids|011665]]
[[Category:Griqua asteroids|011665]]
[[Category:Numbered minor planets|011665]]
[[Category:Discoveries by Paul G. Comba]]
[[Category:Discoveries by Paul G. Comba]]
[[Category:Minor planets named for people]]
[[Category:Named minor planets]]
[[Category:Named minor planets]]
[[Category:Astronomical objects discovered in 1997|19970414]]
[[Category:Astronomical objects discovered in 1997|19970414]]


{{beltasteroid-stub}}

Latest revision as of 17:07, 16 July 2024

11665 Dirichlet
Discovery[1]
Discovered byP. G. Comba
Discovery sitePrescott Obs.
Discovery date14 April 1997
Designations
(11665) Dirichlet
Named after
Peter Gustav Lejeune Dirichlet[1]
(German mathematician)
1997 GL28
main-belt[1] · (outer)[2]
Griqua[3][4]
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 0
Observation arc23.97 yr (8,756 d)
Aphelion3.7625 AU
Perihelion2.7963 AU
3.2794 AU
Eccentricity0.1473
5.94 yr (2,169 d)
298.55°
0° 9m 57.6s / day
Inclination15.787°
215.21°
309.39°
TJupiter3.0980
Physical characteristics
6.803±0.358 km[5][6]
0.087±0.014[5]
14.1[1][2]

11665 Dirichlet, provisional designation 1997 GL28, is a Griqua asteroid and a 2:1 Jupiter librator from the outermost regions of the asteroid belt, approximately 6.8 kilometers (4 miles) in diameter. It was discovered on 14 April 1997, by astronomer Paul Comba at the Prescott Observatory in Arizona, United States. The asteroid was named after German mathematician Peter Gustav Lejeune Dirichlet.[1]

Orbit and classification

[edit]

Dirichlet is a Griqua asteroid, a small dynamical group of asteroids located in the otherwise sparsely populated Hecuba gap (2:1 resonance with Jupiter), which is one of the largest Kirkwood gaps in the asteroid belt.[3][4] It orbits the Sun at a distance of 2.8–3.8 AU once every 5 years and 11 months (2,169 days; semi-major axis of 3.28 AU). Its orbit has an eccentricity of 0.15 and an inclination of 16° with respect to the ecliptic.[2] The body's observation arc begins prior to its official discovery observation with a precovery taken by Spacewatch in October 1994.[1]

Naming

[edit]

This minor planet was named after German mathematician Peter Gustav Lejeune Dirichlet (1805–1859), who was the successor of Carl Friedrich Gauss and the predecessor of Bernhard Riemann at the University of Göttingen. His contributions include the first rigorous proof that the Fourier series converges. The official naming citation was published by the Minor Planet Center on 23 November 1999 (M.P.C. 36951).[7]

Physical characteristics

[edit]

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Dirichlet measures 6.8 kilometers in diameter and its surface has an albedo of 0.09.[5][6] As of 2018, no rotational lightcurve of Dirichlet has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.[2][8]

References

[edit]
  1. ^ a b c d e f "11665 Dirichlet (1997 GL28)". Minor Planet Center. Retrieved 4 December 2018.
  2. ^ a b c d e "JPL Small-Body Database Browser: 11665 Dirichlet (1997 GL28)" (2018-10-16 last obs.). Jet Propulsion Laboratory. Retrieved 4 December 2018.
  3. ^ a b Roig, F.; Nesvorný, D.; Ferraz-Mello, S. (September 2002). "Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution [ Erratum: 2002MNRAS.336.1391R ]". Monthly Notices of the Royal Astronomical Society. 335 (2): 417–431. Bibcode:2002MNRAS.335..417R. doi:10.1046/j.1365-8711.2002.05635.x.
  4. ^ a b "Asteroid (11665) Dirichlet – Proper elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 4 December 2018.
  5. ^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 4 December 2018.
  6. ^ a b "Asteroid 11665 Dirichlet". Small Bodies Data Ferret. Retrieved 4 December 2018.
  7. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 December 2018.
  8. ^ "LCDB Data for (11665) Dirichlet". Asteroid Lightcurve Database (LCDB). Retrieved 4 December 2018.
[edit]
Retrieved from "https://en.wikipedia.org/w/index.php?title=11665_Dirichlet&oldid=1234887116"