Go Back  

Two New Moons Found Orbiting Jupiter 

Current Rating:

Join NowJoin Now
  #1  
Old 02-02-2012, 05:33 PM
Faline's Avatar
Faline
Offline:
♥ Moderator ♥
Poster Rank:2
Gore Goddess
Join Date: Jun 2009
Contributions: 226
 
Mentioned: 85 Post(s)
Quoted: 1894 Post(s)
Activity Longevity
0/20 15/20
Today Posts
0/11 ssss93392
Two New Moons Found Orbiting Jupiter

Quote:
Two new moons have been found orbiting Jupiter, bringing the Jovian family count up to 66 natural satellites, astronomers revealed this week.

Currently known as S/2011 J1 and S/2011 J2, the new moons were first identified in images acquired with the Magellan-Baade Telescope at the Las Campanas Observatory in Chile on September 27, 2011.

Click image for larger version

Name:	jupiter-new-moons-found-io_48209_600x450.jpg
Views:	270
Size:	27.9 KB
ID:	334883

The objects are among the smallest moons yet discovered in the solar system, each measuring only about a kilometer (0.62 mile) wide.

Unlike Jupiter's four large Galilean moons, which are visible from Earth with even small backyard telescopes, both new moons are dim and very distant from the planet, taking about 580 and 726 days to complete their orbits.

Scientists had previously discovered new Jovian satellites in 2010, and astronomers think there may be more—lots more.

"The satellites are part of the outer retrograde swarm of objects around Jupiter," said Scott Sheppard, of the Department of Terrestrial Magnetism at the Carnegie Institute for Science in Washington, D.C., who reported the discovery.

Retrograde satellites are moons that orbit "backward"—in the opposite direction of a planet's axial rotation. Including the two new moons, the Jupiter swarm features 52 known retrograde satellites, which are all relatively tiny.

"It is likely there are about a hundred satellites of this size" in the swarm, Sheppard said.

Like most of Jupiter's other retrograde satellites, S/2011 J1 and J2 are also classified as irregular moons, because they orbit far from the planet and have highly eccentric and inclined orbits.

Due to their odd orbits, the moons are likely asteroid or comet pieces that were long ago captured by Jupiter's gravity rather than developing in place during the formation of the planet itself.

"Because these outer irregular satellites were captured during the solar system's early years, they can give us insight into the planet's formation and evolution process," Sheppard added.

As far as more imaginative names are concerned, that will require more time and more data.

By established convention, satellites in the Jovian system are named for lovers and descendants of the Roman god Jupiter or his Greek counterpart, Zeus.

But "satellites in general are not given Roman or Greek mythological names until they have at least one year of observations," Sheppard said.
http://www.cbat.eps.harvard.edu/iau/...CBET003002.txt

Reply With Quote
The Following 6 Users Say Thank You to Faline For This Useful Post:
Billthegravedigger, Cancun78, durt, kellyhound, Nutbutter, Xfactor
  #2  
Old 02-02-2012, 05:51 PM
Viking64's Avatar
Viking64
Offline:
So Fucking Banned
Poster Rank:5
Join Date: Aug 2009
Contributions: 1
 
Mentioned: 290 Post(s)
Quoted: 24600 Post(s)
Activity Longevity
0/20 15/20
Today Posts
0/11 ssss70998
Re: Two New Moons Found Orbiting Jupiter

Jupiter has 66 moons? Holy shit!! When I first started studying astronomy only 13 had been discovered.

Here is a link to a page about Jupiter's moons. There is a chart giving information about each, including what year they were discovered.

http://en.wikipedia.org/wiki/Moons_of_Jupiter

Reply With Quote
The Following 6 Users Say Thank You to Viking64 For This Useful Post:
Billthegravedigger, durt, Faline, kellyhound, Nutbutter, Xfactor
  #3  
Old 02-03-2012, 01:06 AM
Xfactor's Avatar
Xfactor
Offline:
Avoiding Limelight
Poster Rank:98
Male
Join Date: May 2009
Contributions: 5
 
Mentioned: 7 Post(s)
Quoted: 527 Post(s)
Activity Longevity
3/20 15/20
Today Posts
0/11 ssss10967
Re: Two New Moons Found Orbiting Jupiter

Astronomical philosophy is bullshit. Those are 2 new moons and Pluto is a planet.

__________________
In this horrendous hath? Drowned in her hole.
Reply With Quote
The Following User Says Thank You to Xfactor For This Useful Post:
rol
  #4  
Old 02-03-2012, 08:25 AM
kellyhound's Avatar
kellyhound
Offline:
✝Moderator from Hell✝
Poster Rank:9
e-mail
Join Date: Oct 2006
Contributions: 413
 
Mentioned: 82 Post(s)
Quoted: 1760 Post(s)
Activity Longevity
15/20 20/20
Today Posts
10/11 ssss61215
Re: Two New Moons Found Orbiting Jupiter

neat pic.

__________________
Reply With Quote
  #5  
Old 02-03-2012, 04:09 PM
Nutbutter's Avatar
Nutbutter
Offline:
★ Server Supporter ★
Poster Rank:1383
F
Join Date: Apr 2009
 
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Activity Longevity
0/20 15/20
Today Posts
0/11 ssssss260
Re: Two New Moons Found Orbiting Jupiter

Just a couple of moons short of a frat party

Reply With Quote

Powered by vBulletin Copyright 2000-2010 Jelsoft Enterprises Limited.

Search Engine Friendly URLs by vBSEO