| Discovery[1] | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | Lincoln Lab's ETS |
| Discovery date | 26 April 2006 |
| Designations | |
| (394130) 2006 HY51 | |
| 2006 HY51 | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 9.00 yr (3,286 days) |
| Aphelion | 5.1111 AU |
| Perihelion | 0.0791 AU |
| 2.5951 AU | |
| Eccentricity | 0.9695 |
| 4.18 yr (1,527 days) | |
| 238.94° | |
| 0° 14m 8.88s / day | |
| Inclination | 33.195° |
| 40.788° | |
| 341.88° | |
| Earth MOID | 0.1064 AU (41.5 LD) |
| Jupiter MOID | 0.8098 AU |
| Physical characteristics | |
| Dimensions | 1.218±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. 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 2 3 4 5 6 7 "JPL Small-Body Database Browser: 394130 (2006 HY51)" (2015-04-25 last obs.). Jet Propulsion Laboratory. Retrieved 2 June 2017.
- 1 2 3 "394130 (2006 HY51)". Minor Planet Center. Retrieved 18 August 2016.
- 1 2 3 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.
- ↑ 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
External links
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- (394130) 2006 HY51 at NeoDyS-2, Near Earth Objects—Dynamic Site
- (394130) 2006 HY51 at ESA–space situational awareness
- (394130) 2006 HY51 at the JPL Small-Body Database