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| minorplanet = yes |
| minorplanet = yes |
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| name = 10370 Hylonome |
| name = 10370 Hylonome |
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| background = # |
| background = #E0FFC2 |
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| image = |
| image = |
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| caption = |
| caption = |
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| discoverer = [[David C. Jewitt|D. C. Jewitt]]<br />[[Jane Luu|J. X. Luu]] |
| discoverer = [[David C. Jewitt|D. C. Jewitt]]<br />[[Jane Luu|J. X. Luu]] |
||
| discovery_site = [[Mauna Kea Observatory|Mauna Kea Obs.]] |
| discovery_site = [[Mauna Kea Observatory|Mauna Kea Obs.]] |
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| mpc_name |
| mpc_name = (10370) Hylonome |
||
| alt_names = {{mp|1995 DW|2}} |
| alt_names = {{mp|1995 DW|2}} |
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| named_after = [[Hylonome]]<br />{{small|([[Greek mythology]])}}<ref name="springer" /> |
| named_after = [[Hylonome]]<br />{{small|([[Greek mythology]])}}<ref name="springer" /> |
||
| mp_category = [[Centaur (minor planet)|centaur]] <ref name="lcdb" /><br />[[Neptune-crosser]]<br />[[List of Uranus-crossing minor planets|Uranus-grazer]] |
| mp_category = [[Distant minor planet|distant]] <ref name="MPC-Hylonome" />{{·}}[[Centaur (minor planet)|centaur]] <ref name="lcdb" /><br />[[Neptune-crosser]]<br />[[List of Uranus-crossing minor planets|Uranus-grazer]] |
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| orbit_ref =  <ref name="jpldata" /><ref name="AstDyS-summary" /> |
| orbit_ref =  <ref name="jpldata" /><ref name="AstDyS-summary" /> |
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| epoch = 16 February 2017 ([[Julian day|JD]] 2457800.5) |
| epoch = 16 February 2017 ([[Julian day|JD]] 2457800.5) |
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}} |
}} |
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'''10370 Hylonome''' ({{IPAc-en|h|aɪ|ˈ|l|ɒ|n|ə|m|iː}}; from {{Lang-el|''‘Υλονομη''}}), provisional designation {{mpf|1995 DW|2}}, is a [[minor planet]] orbiting in the [[outer Solar System]]. The dark and icy body belongs to the class of [[centaur (minor planet)|centaur]]s and measures |
'''10370 Hylonome''' ({{IPAc-en|h|aɪ|ˈ|l|ɒ|n|ə|m|iː}}; from {{Lang-el|''‘Υλονομη''}}), provisional designation {{mpf|1995 DW|2}}, is a [[minor planet]] orbiting in the [[outer Solar System]]. The dark and icy body belongs to the class of [[centaur (minor planet)|centaur]]s and measures approximately 75 kilometers in diameter. |
||
It was discovered on 27 February 1995, by English astronomer [[David C. Jewitt]] and Vietnamese American astronomer [[Jane Luu]] at the U.S. [[Mauna Kea Observatory]] in Hawaii, and later named after the mythological creature [[Hylonome]].<ref name="springer" /><ref name="MPC-Hylonome" /> |
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⚫ | Centaurs are a large population of [[Volatiles|icy]] bodies in transition between [[trans-Neptunian object]]s (TNOs) and [[Jupiter-family comet]]s (JFCs), their orbits being unstable due to [[Perturbation (astronomy)|perturbations]] by the [[giant planet]]s.<ref name="Duffard-2014" /> Currently, [[Uranus]] controls Hylonome's [[perihelion]] and [[Neptune]] its aphelion.<ref name=Horner-2004a /> |
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== Classification and orbit == |
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⚫ | Hylonome is a carbonaceous [[C-type asteroid|C-type]] body that orbits the Sun at a distance of 18.9–31.4 [[Astronomical unit|AU]] once every 125 years and 12 months (46,007 days). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.25 and an [[orbital inclination|inclination]] of 4[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> It is a [[List of Neptune-crossing minor planets|Neptune-crosser]], and an [[outer-grazer]] of the orbit of Uranus, which it hence does not [[List of Uranus-crossing minor planets|cross]]. Its [[minimum orbital intersection distance]] with Neptune and Uranus is 0.35854 and 0.52875 AU, respectively.<ref name="MPC-Hylonome" /> |
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⚫ | Centaurs are a large population of [[Volatiles|icy]] bodies in transition between [[trans-Neptunian object]]s (TNOs) and [[Jupiter-family comet]]s (JFCs), their orbits being unstable due to [[Perturbation (astronomy)|perturbations]] by the [[giant planet]]s.<ref name="Duffard-2014" /> Currently, [[Uranus]] controls ''Hylonome''{{'}}s [[perihelion]] and [[Neptune]] its aphelion.<ref name=Horner-2004a /> |
||
⚫ | ''Hylonome'' is a carbonaceous [[C-type asteroid|C-type]] body that orbits the Sun at a distance of 18.9–31.4 [[Astronomical unit|AU]] once every 125 years and 12 months (46,007 days). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.25 and an [[orbital inclination|inclination]] of 4[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> It is a [[List of Neptune-crossing minor planets|Neptune-crosser]], and an [[outer-grazer]] of the orbit of Uranus, which it hence does not [[List of Uranus-crossing minor planets|cross]]. Its [[minimum orbital intersection distance]] with Neptune and Uranus is 0.35854 and 0.52875 AU, respectively.<ref name="MPC-Hylonome" /> |
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It is estimated to have a relatively long orbital half-life of about 6.37 million years.<ref name="Horner-2004a" /> In the year 3478, it will pass within approximately 85 gigameters of Uranus and its [[semi-major axis]] will be reduced from 25.1 to 23.5 AU.<ref name="Hylonome3478" /> |
It is estimated to have a relatively long orbital half-life of about 6.37 million years.<ref name="Horner-2004a" /> In the year 3478, it will pass within approximately 85 gigameters of Uranus and its [[semi-major axis]] will be reduced from 25.1 to 23.5 AU.<ref name="Hylonome3478" /> |
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== Physical characteristics == |
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Observations with the infrared ''[[Spitzer Space Telescope]]'' indicate a diameter of {{val|70|20}} kilometers,<ref name="spitzer" /> whereas the ''Collaborative Asteroid Lightcurve Link'' assumes a standard albedo for carbonaceous bodies of 0.057, giving it a diameter of 75.1 kilometers, based on an absolute magnitude of 9.35.<ref name="lcdb" /> |
Observations with the infrared ''[[Spitzer Space Telescope]]'' indicate a diameter of {{val|70|20}} kilometers,<ref name="spitzer" /> whereas the ''Collaborative Asteroid Lightcurve Link'' assumes a standard albedo for carbonaceous bodies of 0.057, giving it a diameter of 75.1 kilometers, based on an absolute magnitude of 9.35.<ref name="lcdb" /> |
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A study in 2014, using data from ''Spitzer{{'}}s Multiband Imaging Photometer'' (MIPS) and ''[[Herschel Space Observatory|Herschel]]{{'}}s Photodetector Array Camera and Spectrometer'', gave a low [[astronomical albedo|albedo]] {{val|0.051|0.030}} and a diameter of {{val|74|16}} kilometers, based on an absolute [[Magnitude (astronomy)|magnitude]] of {{val|9.51|0.08}}. The study concluded that among the observed population of centaurs, there is no correlation between their sizes, albedos, and orbital parameters. However, the smaller the centaur, the more reddish it is.<ref name="Duffard-2014" /> |
A study in 2014, using data from ''Spitzer{{'}}s Multiband Imaging Photometer'' (MIPS) and ''[[Herschel Space Observatory|Herschel]]{{'}}s Photodetector Array Camera and Spectrometer'', gave a low [[astronomical albedo|albedo]] {{val|0.051|0.030}} and a diameter of {{val|74|16}} kilometers, based on an absolute [[Magnitude (astronomy)|magnitude]] of {{val|9.51|0.08}}. The study concluded that among the observed population of centaurs, there is no correlation between their sizes, albedos, and orbital parameters. However, the smaller the centaur, the more reddish it is.<ref name="Duffard-2014" /> |
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== Naming == |
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⚫ |
|
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⚫ | This [[minor planet]] was named for [[Hylonome]], a female [[centaur]] in [[Greek mythology]]. In the epic tragedy, she lost her very much beloved husband, the handsome centaur [[Cyllarus]], who was accidentally killed by a spear. Heartbroken, she then took her own life to join him by throwing herself on the spear.<ref name="springer" /> The official naming citation was published on 26 July 2000 ({{small|[[Minor Planet Circulars|M.P.C.]] {{MoMP|10370|41030}}}}).<ref name="MPC-Circulars-Archive" /> |
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== References == |
== References == |
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{{reflist |
{{reflist|30em|refs= |
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|refs= |
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<ref name="jpldata">{{cite web |
<ref name="jpldata">{{cite web |
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== External links == |
== External links == |
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* Hylonome as seen around [http://twitpic.com/h3udi 08 Sept 2009] by the new Hubble [[Wide Field Camera 3|WFC3]]. |
* {{mpf|10370 Hylonome}} as seen around [http://twitpic.com/h3udi 08 Sept 2009] by the new Hubble [[Wide Field Camera 3|WFC3]]. |
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* [http://www.minorplanetcenter.org/iau/lists/Centaurs.html List] of Centaurs and SDOs. |
* [http://www.minorplanetcenter.org/iau/lists/Centaurs.html List] of Centaurs and SDOs. |
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* [http://www.minorplanetcenter.net/iau/lists/NumberedMPs010001.html Discovery Circumstances: Numbered Minor Planets (10001)-(15000)] – Minor Planet Center |
* [http://www.minorplanetcenter.net/iau/lists/NumberedMPs010001.html Discovery Circumstances: Numbered Minor Planets (10001)-(15000)] – Minor Planet Center |
Discovery [1] | |
---|---|
Discovered by | D. C. Jewitt J. X. Luu |
Discovery site | Mauna Kea Obs. |
Discovery date | 27 February 1995 |
Designations | |
(10370) Hylonome | |
Named after | Hylonome (Greek mythology)[2] |
1995 DW2 | |
distant [3] · centaur [4] Neptune-crosser Uranus-grazer | |
Orbital characteristics [1][5] | |
Epoch 16 February 2017 (JD 2457800.5) | |
Uncertainty parameter3 | |
Observation arc | 15.27 yr (5,576 days) |
Aphelion | 31.367 AU |
Perihelion | 18.888 AU |
25.127 AU | |
Eccentricity | 0.2483 |
125.96 yr (46,007 days) | |
61.910° | |
0° 0m 28.08s / day | |
Inclination | 4.1443° |
178.07° | |
6.7926° | |
Jupiter MOID | 13.4352 AU |
TJupiter | 4.4530 |
Physical characteristics | |
Dimensions | 70±20km[6] 74±16km[7] 75.09 km (derived)[4] |
0.051±0.030[7] 0.057 (assumed)[4] | |
C [4] · BR(color group) [8] | |
8.6[1] · 9.08±0.04 (R)[9] · 9.250±0.131 (R)[10] · 9.35[4][11] · 9.51±0.08[7] · 9.53[12][13] | |
10370 Hylonome (/haɪˈlɒnəmiː/; from [‘Υλονομη] Error: {{Lang-xx}}: text has italic markup (help)), provisional designation 1995 DW2, is a minor planet orbiting in the outer Solar System. The dark and icy body belongs to the class of centaurs and measures approximately 75 kilometers in diameter.
It was discovered on 27 February 1995, by English astronomer David C. Jewitt and Vietnamese American astronomer Jane Luu at the U.S. Mauna Kea Observatory in Hawaii, and later named after the mythological creature Hylonome.[2][3]
Centaurs are a large population of icy bodies in transition between trans-Neptunian objects (TNOs) and Jupiter-family comets (JFCs), their orbits being unstable due to perturbations by the giant planets.[7] Currently, Uranus controls Hylonome'sperihelion and Neptune its aphelion.[14]
Hylonome is a carbonaceous C-type body that orbits the Sun at a distance of 18.9–31.4 AU once every 125 years and 12 months (46,007 days). Its orbit has an eccentricity of 0.25 and an inclination of 4° with respect to the ecliptic.[1] It is a Neptune-crosser, and an outer-grazer of the orbit of Uranus, which it hence does not cross. Its minimum orbital intersection distance with Neptune and Uranus is 0.35854 and 0.52875 AU, respectively.[3]
It is estimated to have a relatively long orbital half-life of about 6.37 million years.[14] In the year 3478, it will pass within approximately 85 gigameters of Uranus and its semi-major axis will be reduced from 25.1 to 23.5 AU.[15]
Observations with the infrared Spitzer Space Telescope indicate a diameter of 70±20 kilometers,[6] whereas the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous bodies of 0.057, giving it a diameter of 75.1 kilometers, based on an absolute magnitude of 9.35.[4]
A study in 2014, using data from Spitzer's Multiband Imaging Photometer (MIPS) and Herschel's Photodetector Array Camera and Spectrometer, gave a low albedo 0.051±0.030 and a diameter of 74±16 kilometers, based on an absolute magnitudeof9.51±0.08. The study concluded that among the observed population of centaurs, there is no correlation between their sizes, albedos, and orbital parameters. However, the smaller the centaur, the more reddish it is.[7]
This minor planet was named for Hylonome, a female centaurinGreek mythology. In the epic tragedy, she lost her very much beloved husband, the handsome centaur Cyllarus, who was accidentally killed by a spear. Heartbroken, she then took her own life to join him by throwing herself on the spear.[2] The official naming citation was published on 26 July 2000 (M.P.C. 41030).[16]
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