(394130) 2006 HY51

(394130) 2006 HY51
Discovery[1]
Discovered byLINEAR
Discovery siteLincoln Lab's ETS
Discovery date26 April 2006
Designations
(394130) 2006 HY51
2006 HY51
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 1
Observation arc9.00 yr (3,286 days)
Aphelion5.1111 AU
Perihelion0.0791 AU
2.5951 AU
Eccentricity0.9695
4.18 yr (1,527 days)
238.94°
0° 14m 8.88s / day
Inclination33.195°
40.788°
341.88°
Earth MOID0.1064 AU (41.5 LD)
Jupiter MOID0.8098 AU
Physical characteristics
Dimensions1.218±0.228 km[3]
0.157±0.071[3]
17.2[1]

(394130) 2006 HY51 is a near-Earth object of the Apollo asteroid group with a high orbital eccentricity, approximately 1.2 kilometers in diameter. It was discovered on 26 April 2006, by LINEAR at Lincoln Lab's ETS in Socorro, New Mexico, United States.[2]

Orbit and classification

2006 HY51 orbits the Sun at a distance of 0.1–5.1 AU once every 4 years and 2 months (1,527 days). Its orbit has an eccentricity of 0.97 and an inclination of 33° with respect to the ecliptic.[1]

It is the asteroid with the third-smallest known perihelion of any known object orbiting the Sun.[citation needed] Its extreme orbital eccentricity brings it within 0.081 AU of the Sun (26% of Mercury's perihelion) and as far as 5.118 AU from the Sun (making it a Jupiter-grazer). It has a minimum orbit intersection distance with Earth of 0.1064 AU (15,900,000 km), equivalent to 41.5 lunar distances.[1]

The small bodies with even more eccentric orbits are likely to suffer a rotational breakup by the age comparable to that of the Solar System, although 2006 HY51 itself is not expected to break.[4]

Physical characteristics

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, 2006 HY51 measures 1.218 kilometers in diameter and its surface has an albedo of 0.157.[3] The asteroid's composition and shape, as well as its rotation period remain unknown. It has an absolute magnitude of 17.2.[1]

Naming

As of 2017, this minor planet remains unnamed.[2]

References

  1. ^ a b c d e f g "JPL Small-Body Database Browser: 394130 (2006 HY51)" (2015-04-25 last obs.). Jet Propulsion Laboratory. Retrieved 2 June 2017.
  2. ^ a b c "394130 (2006 HY51)". Minor Planet Center. Retrieved 18 August 2016.
  3. ^ a b c Mainzer, A.; Grav, T.; Bauer, J.; Masiero, J.; McMillan, R. S.; Cutri, R. M.; et al. (December 2011). "NEOWISE Observations of Near-Earth Objects: Preliminary Results". The Astrophysical Journal. 743 (2): 17. arXiv:1109.6400. Bibcode:2011ApJ...743..156M. doi:10.1088/0004-637X/743/2/156. S2CID 239991. Retrieved 14 December 2016.
  4. ^ Makarov, V. V.; Goldin, A.; Veras, D. (2020), "Gigayear-timescale Destruction of High-eccentricity Asteroids by Spin and Why 2006 HY51 Has Been Spared", The Astrophysical Journal, 899 (2): 103, arXiv:2007.11487, Bibcode:2020ApJ...899..103M, doi:10.3847/1538-4357/aba89e