Featured Research

from universities, journals, and other organizations

Astronomer finds evidence for record-breaking nine planet system

Date:
April 12, 2012
Source:
University of Hertfordshire
Summary:
The planetary system around the star named HD 10180 may have more planets in its orbits than our own solar system. Located 130 light years away, the star is not within reach of foreseeable human space travel, but in astronomical distances, it is still considered to be in the solar neighborhood.

An artist’s conception of the planetary system around HD 10180. One of the new Super-Earth planets HD 10180j is seen in the foreground (on the left hand side of the picture), with the nearby Neptune-like planet HD 10180e in the background (on the right-hand side of picture with blue cloudy atmosphere). The central star and the other 7 planets can be seen in the distance, including the second new Super-Earth HD 10180i, third out from the central star.
Credit: Image courtesy of University of Hertfordshire

A study by Mikko Tuomi, an astronomer at the University of Hertfordshire, has revealed that the planetary system around the star named HD 10180 may have more planets in its orbits than our own Solar system. Dr Tuomi carried out his analysis as part of the EU research network RoPACS, being led in Hertfordshire.

Related Articles


Originally reported to be orbited by seven planets in 2010, re-analysed data from the HARPS (High Accuracy Radial Velocity Planet Searcher) now indicates that the star has nine planets. This discovery is significant as most planetary systems discovered so far have far fewer planets. Located 130 light years away, the star is not within reach of foreseeable human space travel, but in astronomical distances, it is still considered to be in the solar neighbourhood.

The study, accepted for publication in the journal Astronomy and Astrophysics, verifies the existence of the previously announced seven planets and shows that there are likely to be two additional planets orbiting the star. The two newly detected signals are probably those of planets classified as hot super-Earths with orbital periods around the star of 10 and 68 days.

These new planets are closer to the star's surface than Earth is to the Sun which makes them too hot to be able to maintain water on their surfaces in its liquid form. They have masses of 1.9 and 5.1 times that of our planet Earth which suggests that they are solid rocky bodies and make them among the smallest planets outside of our Solar system detected to date.

Future observations are required to verify the existence of these planet candidates and to establish the HD 10180 star system as the richest planetary system known to humankind -- certainly a star worth keeping our telescopes on into the future.


Story Source:

The above story is based on materials provided by University of Hertfordshire. Note: Materials may be edited for content and length.


Cite This Page:

University of Hertfordshire. "Astronomer finds evidence for record-breaking nine planet system." ScienceDaily. ScienceDaily, 12 April 2012. <www.sciencedaily.com/releases/2012/04/120412105531.htm>.
University of Hertfordshire. (2012, April 12). Astronomer finds evidence for record-breaking nine planet system. ScienceDaily. Retrieved December 17, 2014 from www.sciencedaily.com/releases/2012/04/120412105531.htm
University of Hertfordshire. "Astronomer finds evidence for record-breaking nine planet system." ScienceDaily. www.sciencedaily.com/releases/2012/04/120412105531.htm (accessed December 17, 2014).

Share This


More From ScienceDaily



More Space & Time News

Wednesday, December 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Rover Finds More Clues About Possible Life On Mars

Rover Finds More Clues About Possible Life On Mars

Newsy (Dec. 17, 2014) NASA's Curiosity rover detected methane on Mars and organic compounds on the surface, but it doesn't quite prove there was life ... yet. Video provided by Newsy
Powered by NewsLook.com
Evidence of Life on Mars? NASA Rover Finds Methane, Organic Chemicals

Evidence of Life on Mars? NASA Rover Finds Methane, Organic Chemicals

Reuters - US Online Video (Dec. 16, 2014) NASA's Mars Curiosity rover finds methane in the Martian atmosphere and organic chemicals in the planet's soil, the latest hint that Mars was once suitable for microbial life. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Geminids Meteor Shower Lights Up Skies in China

Geminids Meteor Shower Lights Up Skies in China

AFP (Dec. 16, 2014) The Geminids meteor shower lights up the skies over the Changbai Mountains in northeast China. Duration: 01:03 Video provided by AFP
Powered by NewsLook.com
Raw: Defense Satellite Launches from California

Raw: Defense Satellite Launches from California

AP (Dec. 13, 2014) A U.S. defense satellite launched from California's central coast on Friday after weather delays caused by a major storm that drenched the state. (Dec. 13) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins