If any clear skies occur during the last week of October, don’t miss any opportunities to view a 700-metre-wide space rock with the catchy designation 162082 (1998 HL1) as it hurtles past our planet slightly more than sixteen lunar distances away at 17:20 UT (6:20pm BST) on 25 October 2019.
Predicted to reach a peak magnitude of +12.4 on 27 October, this near-Earth asteroid is a viable target for 6-inch (15-cm) aperture telescopes and larger for five nights as it zips through the constellations of Triangulum, Aries and into Cetus at rates of up to 9 degrees/day relative to the background stars. (See the bottom of this page for a table of predicted positions at hourly intervals for observers in the UK and Western Europe.)Although classified as a Potentially Hazardous Asteroid (PHA), there is no chance that 1998 HL1 could collide with Earth for at least 120 years. The next time it passes closer to Earth than this apparition is on 26 October 2140 when it zips by our planet at a distance of 6.18 million kilometres, or 3.8 million miles.Discovered by the Lincoln Near-Earth Asteroid Research (LINEAR) project at Socorro, New Mexico on 18 April 1998, 162082 (1998 HL1) is an Apollo-type asteroid that loops the Sun once every 508 days in an eccentric orbit inclined by 20 degrees to the ecliptic.
One of best deep-sky objects of the approaching season is the Andromeda Galaxy, or Messier 31, that is now accessible low in the east-northeast by 10pm local time in the UK and Western Europe. Here’s our comprehensive guide to locating this iconic Local Group galaxy.
Two years ago, on February 15th, the morning routine of the Chelyabinsk region in Russia was shattered by the arrival of a 20-metre-wide meteoroid that dramatically fragmented in the atmosphere. The ensuing shockwave shattered windows, damaged buildings and 1,491 people received injuries. What have we learned since 2013?
Humanity has visited Uranus only once, and that was exactly 30 years ago. NASA’s Voyager 2 spacecraft got its closest look at the mysterious, distant, gaseous planet on 24 January 1986. The probe sent back stunning images of the coldest planet known in our solar system and its moons during the flyby, which allowed for about 5½ hours of close study.