38628 Huya

This article is about the minor planet. For other uses, see Huya (disambiguation).

38628 Huya
Huya and its satellite, imaged by the Hubble Space Telescope on 6 May 2012
Discovery[1]
Discovered byIgnacio R. Ferrín et al.
Discovery siteLlano del Hato Obs.
Discovery date10 March 2000
Designations
(38628) Huya
Pronunciation/huːˈjɑː/ hoo-YAH
Named after
Huya
2000 EB173
TNO · plutino[2]
Kozai res.[3] · distant[4]
Orbital characteristics[1][2]
Epoch 17 December 2021 (JD 2459200.5)
Uncertainty parameter 1
Observation arc24.44 yr (8,926 days)
Earliest precovery date9 April 1996
Aphelion50.835 AU
Perihelion28.552 AU
39.694 AU
Eccentricity0.28068
250.09 yr (91,345 d)
8.038°
0° 0m 14.188s / day
Inclination15.474°
169.420°
14 December 2014[5]
68.485°
Known satellites1
Physical characteristics
411.0±7.3 km (primary only)[6]
406±16 km (primary only)[7]
458±9.2 km (primary and secondary, estimate)[7][8]
Mass>5.01×1019 kg[a]
Mean density
>1.43 g/cm3[9][10]
≈0.8 g/cm3 (assuming hydrostatic equilibrium)[6]
6.725±0.006 h[6]
5.28 h (fragmentary)[9]
4.45±0.07 h (fragmentary)[11]
6.75±0.01 h (fragmentary)[12]
0.079±0.004 (primary only)[6]
0.083±0.004 (primary and secondary)[7][6]
0.081±0.008[8]
IR (moderately red)[13][14]
B−V=0.96±0.01[15][16]
V−R=0.57±0.02[15]
V−I=1.2±0.02[15]
19.8 (opposition)[17]
19.11 (opposition,
R-band)[18]
5.04±0.03[7]
5.048±0.021[19]
4.8 (assumed)[1][4]

38628 Huya (/huːˈjɑː/ hoo-YAH; provisional designation 2000 EB173) is a binary trans-Neptunian object located in the Kuiper belt, a region of icy objects orbiting beyond Neptune in the outer Solar System. Huya is classified as a plutino, a dynamical class of trans-Neptunian objects with orbits in a 3:2 orbital resonance with Neptune. It was discovered by the Quasar Equatorial Survey Team and was identified by Venezuelan astronomer Ignacio Ferrín in March 2000. It is named after Juyá, the mythological rain god of the Wayuu people native to South America.

Huya's surface is moderately red in color due to the presence of complex organic compounds on its surface. Water ice has been suspected to be also present on its surface, although water ice has not been directly detected on Huya. Huya is considered as a mid-sized trans-Neptunian object, with an estimated diameter of about 400 km (250 mi). Huya has been considered to be a possible dwarf planet, though its relatively small size and dark surface may imply that it never collapsed into a solid body and was thus never in hydrostatic equilibrium.[20]

Huya has one known natural satellite, designated S/2012 (38628) 1. The satellite is relatively large compared to Huya and is expected to have slowed its rotation, although measurements of Huya's brightness variations have indicated that Huya's rotation may not be synchronous with the satellite's orbit.

  1. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Buie was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Schwamb2010 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Horizons2014 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference Santos-Sanz-2022 was invoked but never defined (see the help page).
  7. ^ a b c d e Cite error: The named reference TNOsCool8 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Lellouch2019 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference Thirouin2014 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference johnston was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Galiazzo2016 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Ortiz2003 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Cruikshank2007 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Barucci2011 was invoked but never defined (see the help page).
  15. ^ a b c Cite error: The named reference Belskaya2015 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference lcdb was invoked but never defined (see the help page).
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  18. ^ Cite error: The named reference Schaefer2002 was invoked but never defined (see the help page).
  19. ^ Cite error: The named reference Rabinowitz2006 was invoked but never defined (see the help page).
  20. ^ Cite error: The named reference Grundy2019 was invoked but never defined (see the help page).


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