(391211) 2006 HZ51
| Discovery[1] | |
|---|---|
| Discovered by | Catalina Sky Survey |
| Discovery date | 27 April 2006 |
| Designations | |
| none | |
| Amor | |
| Orbital characteristics[2][3] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 4775 days (13.07 yr) |
| Aphelion | 2.75104 AU (411.550 Gm) |
| Perihelion | 1.04323 AU (156.065 Gm) |
| 1.89714 AU (283.808 Gm) | |
| Eccentricity | 0.45010 |
| 2.61 yr (954.43 d) | |
Average orbital speed | 20.48 km/s |
| 220.298° | |
| 0° 22m 37.873s / day | |
| Inclination | 12.4138° |
| 84.3150° | |
| 193.332° | |
| Earth MOID | 0.0331954 AU (4.96596 Gm) |
| Jupiter MOID | 2.3967 AU (358.54 Gm) |
| Jupiter Tisserand parameter | 3.796 |
| Physical characteristics | |
| Dimensions | ~800 meters[4] |
| Mass | ~5.4×1011 kg |
Mean density | 2.0? g/cm³ |
Equatorial surface gravity | ~0.0002 m/s² |
Equatorial escape velocity | ~0.0004 km/s |
| 0.10? | |
| Temperature | ~202 K |
| 18.5[3] | |
|
| |
(391211) 2006 HZ51 is an 800 meter in diameter asteroid discovered on 27 April 2006 by the Catalina Sky Survey that with a 1.1 day observation arc was thought to have a 1 in 6 million chance of hitting Earth on 21 June 2008.[4] Further refinement of the orbit quickly eliminated the risk. The preliminary orbit solution was at first thought to have a period of 7 years and a perihelion of ~1.1 AU. [MPEC 2006-H58, 28 April 2006, 2-day orbit].
References
- ↑ "Discovery Circumstances: Numbered Minor Planets". Minor Planet Center.
- ↑ "The Asteroid Orbital Elements Database". astorb. Lowell Observatory.
- 1 2 "JPL Small-Body Database Browser: 391211 (2006 HZ51)". Jet Propulsion Laboratory. Retrieved 9 April 2016.
- 1 2 Big new asteroid has slim chance of hitting Earth - New Scientist
External links
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