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
MARS NEEDS WOMEN, claims NASA pseudo 'naut: They eat less
'Some might find this idea offensive' boffin admits
SECRET U.S. 'SPACE WARPLANE' set to return from SPY MISSION
Robot minishuttle X-37B returns after almost 2 years in orbit
LOHAN crash lands on CNN
Overflies Die Welt en route to lively US news vid
Experts brand LOHAN's squeaky-clean box
Phytosanitary treatment renders Vulture 2 crate fit for export
You can crunch it all you like, but the answer is NOT always in the data
Hear that, 'data journalists'? Our analytics prof holds forth
No sail: NASA spikes Sunjammer
'Solar sail' demonstrator project binned
America's super-secret X-37B plane returns to Earth after nearly TWO YEARS aloft
674 days in space for US Air Force's mystery orbital vehicle
Carry On Cosmonaut: Willful Child is a poor taste Star Trek parody
Cringeworthy, crude and crass jokes abound in Steven Erikson’s sci-fi debut
Origins of SEXUAL INTERCOURSE fished out of SCOTTISH LAKE
Fossil find proves it first happened 385 million years ago
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Cloud and hybrid-cloud data protection for VMware
Learn how quick and easy it is to configure backups and perform restores for VMware environments.
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.