Feeds

Two new Jovian moons confirmed

'S/2010 J 2' is smallest moon ever spotted from Earth

Intelligent flash storage arrays

Jupiter's tally of moons has gone up by two, after researchers published their observations of two previously unknown Jovian satellites.

The romantically-named S/2010 J 1 and S/2010 J 2 are both tiny. The former is just three kilometres across. The latter is even smaller, boasting a diameter of just two kilometres. That small dimension is nonetheless noteworthy, as it means the discovering scientists from the University of British Columbia have claimed the crown for spotting the smallest moon so far observed from Earth.

The moons were first spotted in 2003, but are so small it's taken a while to make sure they have properly moon-like orbits, rather than being cosmic freeloaders. The recent publication of a paper, Discovery of two additional Jovian irregulars, means all the necessary i's have been dotted and all the tees crossed to officially add the pair to the now 67-strong list of Jupiter's moons.

On the off-chance you'd like to visit, S/2010 J 1 can be found a mere 23.45 million kilometres from the gas giant, while its smaller cousin is a little nearer at 21.01 million kilometres. ®

Providing a secure and efficient Helpdesk

More from The Register

next story
GRAV WAVE DRAMA: 'Big Bang echo' may have been grit on the scanner – boffins
Exit Planet Dust on faster-than-light expansion of universe
SpaceX Dragon cargo truck flies 3D printer to ISS: Clawdown in 3, 2...
Craft berths at space station with supplies, experiments, toys
That glass of water you just drank? It was OLDER than the SUN
One MEELLION years older. Some of it anyway
NASA rover Curiosity drills HOLE in MARS 'GOLF COURSE'
Joins 'traffic light' and perfect stony sphere on the Red Planet
Mine Bitcoins with PENCIL and PAPER
Forget Sudoku, crunch SHA-256 algos
Big dinosaur wowed females with its ENORMOUS HOOTER
That's right, Doris, I've got biggest snout in the prehistoric world
Japanese volcano eruption reportedly leaves 31 people presumed dead
Hopes fade of finding survivors on Mount Ontake
Canberra drone team dances a samba in Outback Challenge
CSIRO's 'missing bushwalker' found and watered
prev story

Whitepapers

A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.