NASA Hubble Finds New Neptune Moon

[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]

 



July 15, 2013

J.D. Harrington
Headquarters, Washington          
202-358-5241
j.d.harrington@xxxxxxxx

Donna Weaver / Ray Villard
Space Telescope Science Institute, Baltimore, Md.
410-338-4493 / 410-338-4514
dweaver@xxxxxxxxx / villard@xxxxxxxxx

RELEASE 13-215

NASA Hubble Finds New Neptune Moon

WASHINGTON -- NASA's Hubble Space Telescope has discovered a new moon orbiting the distant blue-green planet Neptune, the 14th known to be circling the giant planet.

The moon, designated S/2004 N 1, is estimated to be no more than 12 miles across, making it the smallest known moon in the Neptunian system. It is so small and dim that it is roughly 100 million times fainter than the faintest star that can be seen with the naked eye. It even escaped detection by NASA's Voyager 2 spacecraft, which flew past Neptune in 1989 and surveyed the planet's system of moons and rings.

Mark Showalter of the SETI Institute in Mountain View, Calif., found the moon July 1, while studying the faint arcs, or segments of rings, around Neptune. "The moons and arcs orbit very quickly, so we had to devise a way to follow their motion in order to bring out the details of the system," he said. "It's the same reason a sports photographer tracks a running athlete -- the athlete stays in focus, but the background blurs."

The method involved tracking the movement of a white dot that appears over and over again in more than 150 archival Neptune photographs taken by Hubble from 2004 to 2009.

On a whim, Showalter looked far beyond the ring segments and noticed the white dot about 65,400 miles from Neptune, located between the orbits of the Neptunian moons Larissa and Proteus. The dot is S/2004 N 1. Showalter plotted a circular orbit for the moon, which completes one revolution around Neptune every 23 hours.

The Hubble Space Telescope is a cooperative project between NASA and the European Space Agency. NASA's Goddard Space Flight Center in Greenbelt, Md., manages the telescope. The Space Telescope Science Institute (STScI) in Baltimore, Md., conducts Hubble science operations. STScI is operated by the Association of Universities for Research in Astronomy Inc., in Washington.

For images, video, and more information Neptune's new moon, visit:

http://hubblesite.org/news/2013/30

For more information about the Hubble Space Telescope, visit:

http://www.nasa.gov/hubble

-end-

 


NASA news releases and other information are available automatically by sending an e-mail message with the subject line subscribe to hqnews-request@xxxxxxxxxxxxxxxxxxxx.
To unsubscribe from the list, send an e-mail message with the subject line unsubscribe to hqnews-request@xxxxxxxxxxxxxxxxxxxx.

 

_______________________________________________
Hqnews mailing list
Hqnews@xxxxxxxxxxxxxxxxxxxx
http://newsletters.nasawestprime.com/mailman/listinfo/hqnews
[Index of Archives]     [JPL News]     [Cassini News From Saturn]     [NASA Marshall Space Flight Center News]     [NASA Science News]     [James Web Space Telescope News]     [JPL Home]     [NASA KSC]     [NTSB]     [Deep Creek Hot Springs]     [Yosemite Discussion]     [NSF]     [Telescopes]

  Powered by Linux