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| background=#C2E0FF
| background=#C2E0FF
| name={{mp|(126154) 2001 YH|140}}
| name={{mp|(126154) 2001 YH|140}}
| discoverer=[[Michael E. Brown]],<br> [[Chadwick A. Trujillo]]<ref name=iau>{{Cite web|url=http://www.minorplanetcenter.org/iau/lists/TNOs.html|title=List Of Transneptunian Objects|access-date=2011-01-08|publisher=[[IAU Minor Planet Center]]}}</ref>
| discoverer=[[Michael E. Brown]],<br /> [[Chadwick A. Trujillo]]<ref name=iau>{{Cite web|url=http://www.minorplanetcenter.org/iau/lists/TNOs.html|title=List Of Transneptunian Objects|access-date=2011-01-08|publisher=[[IAU Minor Planet Center]]}}</ref>
| discovered=18 December 2001
| discovered=18 December 2001
| mpc_name={{mp|(126154) 2001 YH|140}}
| mpc_name={{mp|(126154) 2001 YH|140}}
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}}
}}


'''{{mp|(126154) 2001 YH|140}}''', also written as '''(126154) 2001 YH140''', is a resonant [[trans-Neptunian object]] discovered on 18 December 2001, by American astronomers [[Chad Trujillo]] and [[Michael E. Brown|Michael Brown]] at the [[Palomar Observatory]] in California. It measures approximately 345 kilometers in diameter.<ref name=Muller2010/>
'''{{mp|(126154) 2001 YH|140}}''' ([[Minor planet provisional designation|provisional designation]] '''{{mp|2001 YH|140}}''') is a resonant [[trans-Neptunian object]] discovered on 18 December 2001, by American astronomers [[Chad Trujillo]] and [[Michael E. Brown|Michael Brown]] at the [[Palomar Observatory]] in California. It measures approximately 345 kilometers in diameter.<ref name=Muller2010/>


==Orbit and rotation==
==Orbit and rotation==

{{mp|2001 YH|140}} is locked in 3:5 mean-motion resonance with [[Neptune]].<ref name=Muller2010/> When it makes three revolutions around the Sun, Neptune makes exactly five. The rotation period of {{mp|(126154) 2001 YH|140}} is estimated to be {{nowrap|13.25 ± 0.2 hours}}.<ref name=Sheppard2007>{{Cite journal | doi = 10.1086/519072| bibcode = 2007AJ....134..787S| arxiv = 0704.1636| title = Light Curves of Dwarf Plutonian Planets and other Large Kuiper Belt Objects: Their Rotations, Phase Functions, and Absolute Magnitudes| journal = [[The Astronomical Journal]]| volume = 134| issue = 2| pages = 787–798| date = August 2007| last1 = Sheppard | first1 = Scott S. | s2cid = 56247384}}</ref>
{{mp|2001 YH|140}} is locked in 3:5 mean-motion resonance with [[Neptune]].<ref name=Muller2010/> When it makes three revolutions around the Sun, Neptune makes exactly five. The rotation period of {{mp|(126154) 2001 YH|140}} is estimated to be {{nowrap|13.25 ± 0.2 hours}}.<ref name=Sheppard2007>{{Cite journal | doi = 10.1086/519072| bibcode = 2007AJ....134..787S| arxiv = 0704.1636| title = Light Curves of Dwarf Plutonian Planets and other Large Kuiper Belt Objects: Their Rotations, Phase Functions, and Absolute Magnitudes| journal = [[The Astronomical Journal]]| volume = 134| issue = 2| pages = 787–798| date = August 2007| last1 = Sheppard | first1 = Scott S. | s2cid = 56247384}}</ref>


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{{Small Solar System bodies}}
{{Small Solar System bodies}}
{{Trans-Neptunian objects}}
{{Trans-Neptunian objects}}
{{Authority control}}


{{DEFAULTSORT:2001 YH140}}
{{DEFAULTSORT:2001 YH140}}
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[[Category:Discoveries by Chad Trujillo]]
[[Category:Discoveries by Chad Trujillo]]
[[Category:Astronomical objects discovered in 2001|20011218]]
[[Category:Astronomical objects discovered in 2001|20011218]]
[[Category:Possible dwarf planets|0126154]]




Latest revision as of 17:05, 24 December 2024

(126154) 2001 YH140
Discovery
Discovered byMichael E. Brown,
Chadwick A. Trujillo[1]
Discovery date18 December 2001
Designations
(126154) 2001 YH140
TNO (3:5 resonance)[2]
Orbital characteristics[1][3]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 2
Observation arc4777 days (13.08 yr)
Aphelion48.725 AU (7.2892 Tm)
Perihelion36.428 AU (5.4496 Tm)
42.577 AU (6.3694 Tm)
Eccentricity0.14441
277.82 yr (101475 d)
19.455°
0° 0m 12.772s / day
Inclination11.069°
108.84°
356.62°
Physical characteristics
Dimensions345 ± 45 km[4]
Mass~4.0×1019 kg
13.25 h (0.552 d)
13.25 ± 0.2 h[5]
0.06–0.10[4]
Temperature~42 K
5.8,[4] 5.5[3]

(126154) 2001 YH140 (provisional designation 2001 YH140) is a resonant trans-Neptunian object discovered on 18 December 2001, by American astronomers Chad Trujillo and Michael Brown at the Palomar Observatory in California. It measures approximately 345 kilometers in diameter.[4]

Orbit and rotation

[edit]

2001 YH140 is locked in 3:5 mean-motion resonance with Neptune.[4] When it makes three revolutions around the Sun, Neptune makes exactly five. The rotation period of (126154) 2001 YH140 is estimated to be 13.25 ± 0.2 hours.[5]

Physical characteristics

[edit]

In 2010 thermal flux from (126154) 2001 YH140 in the far-infrared was measured by the Herschel Space Telescope. As a result, its size has been estimated to be 300–390 km (190–240 mi).[4]

References

[edit]
  1. ^ a b "List Of Transneptunian Objects". IAU Minor Planet Center. Retrieved 2011-01-08.
  2. ^ "MPEC 2009-R09 :Distant Minor Planets (16 September 2009.0 TT)". IAU Minor Planet Center. 2009-09-04. Retrieved 2009-10-04.
  3. ^ a b "JPL Small-Body Database Browser: (126154) 2001 YH140" (last obs). 2009-02-02. Retrieved 11 April 2016.
  4. ^ a b c d e f Müller, T. G.; Lellouch, E.; Stansberry, J.; Kiss, C.; Santos-Sanz, P.; Vilenius, E.; Protopapa, S.; Moreno, R.; Mueller, M.; Delsanti, A.; Duffard, R.; Fornasier, S.; Groussin, O.; Harris, A. W.; Henry, F.; Horner, J.; Lacerda, P.; Lim, T.; Mommert, M.; Ortiz, J. L.; Rengel, M.; Thirouin, A.; Trilling, D.; Barucci, A.; Crovisier, J.; Doressoundiram, A.; Dotto, E.; Gutiérrez, P. J.; Hainaut, O. R.; Hartogh, P. (July–August 2010). ""TNOs are Cool": A survey of the trans-Neptunian region". Astronomy and Astrophysics. 518: L146. arXiv:1005.2923. Bibcode:2010A&A...518L.146M. doi:10.1051/0004-6361/201014683. S2CID 118635387.
  5. ^ a b Sheppard, Scott S. (August 2007). "Light Curves of Dwarf Plutonian Planets and other Large Kuiper Belt Objects: Their Rotations, Phase Functions, and Absolute Magnitudes". The Astronomical Journal. 134 (2): 787–798. arXiv:0704.1636. Bibcode:2007AJ....134..787S. doi:10.1086/519072. S2CID 56247384.
[edit]


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