Astronomy:2014 OO6

2014 OO₆

Discovery
Discovered by	Pan-STARRS (F51)
Discovery date	27 July 2014
Designations
MPC designation	2014 OO6
Minor planet category	Apollo NEO
Orbital characteristics
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 4
Observation arc	154 days
|{{{apsis}}}|helion}}	3.6991 astronomical unit|AU (553.38 Gm) (Q)
|{{{apsis}}}|helion}}	0.70742 AU (105.829 Gm) (q)
Semi-major axis	2.2032 AU (329.59 Gm) (a)
Eccentricity	0.67892 (e)
Orbital period	3.27 yr (1194.5 d)
Mean anomaly	140.83° (M)
Mean motion	0° 18m 4.968s / day (n)
Inclination	1.3817° (i)
Longitude of ascending node	111.17° (Ω)
|{{{apsis}}}|helion}}	287.34° (ω)
Earth MOID	0.000161353 AU (24,138.1 km)
Physical characteristics
Dimensions	~75 meters 60–140 meters
Absolute magnitude (H)	23.1

2014 OO₆ (also written 2014 OO6) is an Apollo near-Earth asteroid discovered in 2014 and was the most dangerous one discovered in 2014 that remained on the Sentry Risk Table as of early December 2014. The asteroid is estimated to be roughly 75 meters (246 ft) in diameter and had a 1 in 83,000 chance of impacting Earth on 11 January 2051. However, the nominal best-fit orbit shows that 2014 OO₆ will be 1.5 astronomical unit|AU (220,000,000 km; 140,000,000 mi) from Earth on 11 January 2051.

It was discovered on 27 July 2014 by Pan-STARRS at an apparent magnitude of 20 using a 1.8-meter (71 in) Ritchey–Chrétien telescope. On 18 August 2014 the asteroid passed 0.02975 astronomical unit|AU (4,451,000 km; 2,765,000 mi) from Earth. By 23 August 2014, the asteroid had dimmed to below magnitude 25. As of early December 2014, the asteroid had an observation arc of 24 days with an uncertainty parameter of 7. 2014 OO₆ was recovered by Cerro Paranal Observatory on 23 and 26 December 2014 at magnitude 25 which extended the observation arc from 24 days to 154 days. The orbital refinement removed the impact risk for 11 January 2051.

With an absolute magnitude of 23.1, the asteroid is about 60–140 meters in diameter.

See also

• List of asteroid close approaches to Earth in 2014

External links

• 2014 OO6 at NeoDyS-2, Near Earth Objects—Dynamic Site
  • Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
• 2014 OO6 at ESA–space situational awareness
  • Ephemerides · Observations · Orbit · Physical Properties · Summary
• 2014 OO6 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters