Informacion suministrada por el Northolt Branch Observatories
The NEOCP objects ZW8A506 and ZW8ACC4, which we observed earlier this week, have been designated 2018 WU and 2018 WV.
2018 WU (=ZW8A506) is an Aten-type asteroid with a diameter of 31-69 metres. It was first observed at Mt. Lemmon Survey on November 18th, around the time of its closest approach to Earth at a distance of 0.021 AU (3.2 million km). 2018 WU is currently visible at +19 mag and fading.
This asteroid has an aphelion (greatest distance from the Sun) of 1.008 AU, just barely outside the Earth’s orbit.
2018 WV (=ZW8ACC4) is an Apollo-type asteroid with a diameter of 21-48 metres. It was also first observed at Mt. Lemmon Survey on November 18th. 2018 WV made a close approach two days earlier, on November 16th, at a distance of 0.0076 AU (1.1 million km) from Earth. It is fading rapidly, but still observable at +20 mag.