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.

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 August 1, 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 August 1, 2014).

Share This




More Space & Time News

Friday, August 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Study Says The Moon Was Deformed Early In Its History

New Study Says The Moon Was Deformed Early In Its History

Newsy (July 31, 2014) Scientists say when the moon was young, it was deformed by the Earth's gravitational pull, which gave it a lemon-like shape. Video provided by Newsy
Powered by NewsLook.com
Supply Ship Takes Off for International Space Station

Supply Ship Takes Off for International Space Station

AFP (July 30, 2014) The European Space Agency's fifth Automated Transfer Vehicle (ATV-5) is takes off to the International Space Station on an Ariane 5 rocket from French Guiana. Duration: 00:34 Video provided by AFP
Powered by NewsLook.com
Raw: Rocket Launches Into Space With Cargo Ship

Raw: Rocket Launches Into Space With Cargo Ship

AP (July 30, 2014) Arianespace launched a rocket Tuesday from French Guiana carrying a robotic cargo ship to deliver provisions to the International Space Station. (July 30) Video provided by AP
Powered by NewsLook.com
In Virginia, the Rise of a New Space Coast

In Virginia, the Rise of a New Space Coast

AP (July 30, 2014) Every summer, tourists make the pilgrimage to Chincoteague Island, Va. to see wild ponies cross the Assateague Channel. But, it's the rockets sending to supplies to the International Space Station that are making this a year-round destination. (July 30) 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:
from the past week

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