Observing

Let Saturn be your guide to finding asteroid Vesta at its brightest

8 June 2018 Ade Ashford

Many of you may have tracked down an asteroid with binoculars or a telescope, but have you ever seen one with the naked eye? If not, then June presents you with an opportunity to see the brightest, 1 Vesta, at a close opposition. What’s more, ringed planet Saturn lies close by to act as a convenient guide.

Observing

See dwarf planet Ceres at opposition on 31 January

26 January 2018 Ade Ashford

While antipodean observers are enjoying views of the totally eclipsed Blue Moon in Cancer the Crab on the night of 31 January/1 February, Northern Hemisphere observers should look out for magnitude +6.9 1 Ceres at opposition in the northern fringes of the same constellation. The dwarf planet puts on a good show in the dark of the Moon during February.

News

NASA’s Dawn mission gears up for close look at Ceres

20 October 2017 Stephen Clark

NASA’s Dawn spacecraft will remain at Ceres for the rest of its mission, heading closer to the asteroid belt’s largest resident than ever before to obtain new measurements of ice, salts and a tenuous intermittent atmosphere detected around the dwarf planet, the space agency announced Thursday.

News

Scientists celebrate 10th anniversary of Dawn mission’s launch

27 September 2017 Stephen Clark

In the ten years since its launch from Cape Canaveral, NASA’s Dawn spacecraft has orbited the two largest worlds in the asteroid belt and overcome defective components that threatened to derail the mission on its 4 billion-mile voyage, discovering unexpectedly rich geologic tapestries suggesting both destinations have a watery past.

News

Hubble spots moon around third largest dwarf planet

18 May 2017 Astronomy Now

The combined power of three space observatories, including NASA’s Hubble Space Telescope, has helped astronomers uncover a moon orbiting the third largest dwarf planet, catalogued as 2007 OR10. The pair resides in the frigid outskirts of our solar system called the Kuiper Belt, a realm of icy debris left over from our solar system’s formation 4.6 billion years ago.

News

Movie shows Ceres at opposition from Sun

17 May 2017 Astronomy Now

NASA’s Dawn spacecraft successfully observed Ceres at opposition on April 29, taking images from a position exactly between the Sun and Ceres’ surface. Mission specialists had carefully maneuvered Dawn into a special orbit so that the spacecraft could view Occator Crater, which contains the brightest area of Ceres, from this new perspective.