2016 PQ explained

Minorplanet:yes
2016 PQ
Background:
  1. FFC2E0
Discovered:2 August 2016
Discoverer:Pan-STARRS 1
Epoch:4 September 2017 (JD 2458000.5)
Uncertainty:7
Observation Arc:(5 days)
Perihelion:0.8695 AU
Semimajor:1.9063 AU
Eccentricity:0.5439
Period:2.63 yr (961 days)
Mean Motion: / day
Inclination:2.6215°
Asc Node:317.73°
Arg Peri:53.512°
Moid:
14693 km; 2.3 R)
Abs Magnitude:25.9

2016 PQ is an approximately 20-meter sized asteroid and near-Earth object of the Apollo group, with one of the smallest known minimum orbital intersection distances with Earth.

Discovery

The asteroid was discovered by the Pan-STARRS telescope on 2 August 2016, when it had reached magnitude 20.5, and it had brightened by magnitude 19.0 three nights later, after which it became too close to the Sun to spot with ground-based telescopes. It reached its closest approach to the Earth on 7 August 2016, at 0.025 AU, or 9.8 lunar distances.

Orbit

orbits the Sun at a distance of 0.9–2.9 AU once every 2 years and 8 months (961 days). Its orbit has an eccentricity of 0.54 and an inclination of 3° with respect to the ecliptic.

MOID

has a very small minimum orbit intersection distance (MOID) to the Earth only around 14693km (9,130miles), corresponding to 0.038 lunar distances or 2.3 Earth radii. It has the 19th lowest MOID of any known asteroid, as well as the 7th lowest MOID of any object larger than it (after,, (85236) 1993 KH,, 2014 DA, and 2004 FH).

Despite its very low MOID, it is not on the Sentry Risk Table, as it is not going to make any nearby close approaches to Earth in the near future. It is too small to be classified as a potentially hazardous asteroid.

See also