Jan. 9, 2019– Mary Greeley News – A newly discovered asteroid designated 2019 AS5 flew past Earth at a very close distance of 0.04 LD / 0.00010 AU (14,959 km / 9,295 miles) on January 8, 2019.
First observed at ATLAS-HKO, Haleakala on 2019-01-06.
ATLAS is an asteroid impact early warning system being developed by the University of Hawaii and funded by NASA. It consists of two telescopes, 100 miles apart, which automatically scan the whole sky several times every night looking for moving objects.
ATLAS will provide one day’s warning for a 30-kiloton “town killer,” a week for a 5-megaton “city killer,” and three weeks for a 100-megaton “county killer”.
It is said to have an orbit to pass earth every 3.84 years.
This is the 1st known asteroid to flyby Earth within 1 lunar distance this year and the closest since February 24, 2018.
— Tony Dunn (@tony873004) January 9, 2019
This is a small asteroid, was observed at Mt. Lemmon Survey 9 hours after it flew past us.
The gravitational pull of the earth dramatical changed the orbit if this asteroid.
It belongs to the Apollo group of asteroids and has an estimated diameter between 0.94 and 2.1 m (3.1 – 6.8 feet).
The asteroid flew past Earth at a speed (relative to the Earth) of 12.52 km/s at 00:37 UTC on January 8.
As already mentioned, this is the 1st known asteroid to flyby Earth within 1 lunar distance this year and the closest since February 24, 2018.
The last known <1LD asteroid flyby took place at 12:25 UTC on December 28, 2018. We had two such flybys that day, 2018 YO2 at 0.51 LD and 2019 AW2 at 0.43 LD.