38628 Huya

38628 Huya
File:38628 Huya.png
Artist's impression of Huya
Discovery
Discovered byIgnacio Ferrin
Discovery dateMarch 10, 2000
Designations
MPC designation38628 Huya
2000 EB173
TNO
Plutino[1][2]
Orbital characteristics[1][3]
Epoch December 31, 2006 (JD 2454100.5)
Aphelion7627.387 Gm (50.986 AU)
Perihelion4269.292 Gm (28.538 AU)
5948.340 Gm (39.762 AU)
Eccentricity0.282
91580.694 d (250.73 a)
4.63 km/s
348.506°
Inclination15.463°
169.296°
67.637°
Physical characteristics
Dimensions480±50 km[4]
532±25 km[5]
Mass6.5×10Script error: No such module "Gapnum".–1.8×10Script error: No such module "Gapnum". kg[6]
Mean density
2.0? g/cm³
0.12–0.15? m/s²
0.23–0.28? km/s
? d
Albedo0.11±0.02[4]
Temperature~44 K
Spectral type
(moderately red) B-V=1.00; V-R=0.65[7]
19.3 (opposition)
4.7[3]
0.024" (max)[8]

38628 Huya, previously known by its provisional designation 2000 EB173) is a trans-Neptunian object (TNO). It was found in March 2000 by Ignacio Ferrin and announced on 24 October 2000. It was given the name Huya, after Juyá, the Wayuu rain god, in August 2003 by the International Astronomical Union (IAU).

Size

At the time when it was found, Huya was the biggest and brightest TNO yet found. It was found using data collected by at the CIDA Observatory in Venezuela. Astronomers think it's about 530 km in diameter.[5]

Surface

The object has a red-sloped reflectance spectrum, saying that the surface could be rich in organic material such as tholins.[9]

Orbit

Given the long orbit that TNOs have around the sun, Huya comes to opposition in early May of each year at an apparent magnitude of 19.3.

References

  1. 1.0 1.1 Marc W. Buie (2007-04-22). "Orbit Fit and Astrometric record for 38628". SwRI (Space Science Department). Retrieved 2008-07-17.
  2. "MPEC 2006-X45 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 2006-12-21. Retrieved 2008-07-18.
  3. 3.0 3.1 "JPL Small-Body Database Browser: 38628 Huya (2000 EB173)". 2007-05-12 last obs. Retrieved 2008-07-17. Check date values in: |date= (help)
  4. 4.0 4.1 Stansberry (2005). "TNO/Centaur diameters and albedos". Retrieved 2006-11-08.
  5. 5.0 5.1 John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot (2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". University of Arizona, Lowell Observatory, California Institute of Technology, NASA Ames Research Center, Southwest Research Institute, Cornell University. Retrieved 2008-07-24.CS1 maint: Multiple names: authors list (link)
  6. Radius of 253 km and density of 0.97 = 6.5×10Script error: No such module "Gapnum". kg mass. Radius of 279 km and density of 2.0 = 1.8×10Script error: No such module "Gapnum". kg mass
  7. "TNO and Centaur Colors". Retrieved 2006-11-08.
  8. Huya Angular Size @ May 2015 Opposition: 480km dia / (27.5543AU * 149 597 870km) * 206265 = 0.024"
  9. Licandro (07/2001). "NICS-TNG infrared spectroscopy of trans-neptunian objects 2000 EB173 and 2000 WR106". Astronomy and Astrophysics, v.373, p.L29-L32 (2001). Retrieved 2007-10-17. Check date values in: |date= (help)

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