Exoplanetary Scratchpad |
Ross 780 is also known as Gl 876 and the flare star IL Aquarii. Very nearby quadruple planet system and the first Red Dwarf found to have planets. The innermost planet (d, Hot Superterran, rocky-water) was the first found rocky planet around a normal star (the first true Super-Earth, at epistellar distances). The outer three planets c (Warm Saturnian), b (Warm Jovian), and e (Cold Neptunian) are in 1:2:4 (30d/60d/120d) resonance (the exoplanet resonance and first triple-resonant planets discovered). The outermost planet has a Mercury-like orbit. Planet b is second discovered by ELODIE after 51 Peg b and the second to have its mass exactly measured and the first to have done so by astrometry.
Gliese 876 System Web Pages[]
- System of the Day
- Wikipedia
- Extrasolar Visions
- Sol Station (orbits)
- book 64
- Astro Cosmo (translated)
- Extrasolar Planet Encyclopedia
- Astronomy Picture of the Day
- Exoplanet Catalog
Gliese 876 System In the News[]
Discovery of Planet b (1998)[]
Discovery of the nearest exoplanet to the Sun
http://aa.springer.de/bibs/8338002/2300l67/small.htm
http://www.journals.uchicago.edu/ApJ/journal/issues/ApJL/v505n2/985511/985511.html
article
http://www.sciencenews.org/pages/sn_arc98/6_27_98/fob3.htm
http://www.obs-hp.fr/www/nouvelles/gl876.html
Discovery of Resonant Planet c (2001)[]
A planet in resonance with the earlier detected planet is discovered
http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v556n1/53268/brief/53268.abstract.html
http://www.planetary.org/html/news/articlearchive/headlines/2001/2Systems.htm
http://nai.arc.nasa.gov/news_stories/news_detail.cfm?article=old/dancegiant.htm
http://news.bbc.co.uk/2/hi/science/nature/1111427.stm
3-Body Orbit Solutions (2001-2005)[]
article (2001) article (2001) - mass determination http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v558n1/53820/brief/53820.abstract.html (2001) http://www.aas.org/publications/baas/v35n4/dda2003/36.htm (2003) http://fr.arxiv.org/abs/astro-ph/0407441 (2004)
Evolution and Stability of Resonance Orbits (2001-2005)[]
http://pasj.asj.or.jp/vol53/v53n4/530404/530404-frame.html (2001) http://www.aas.org/publications/baas/v33n3/dda2001/55.htm (2001) http://xxx.lpthe.jussieu.fr/abs/astro-ph/0104432 (2001) http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v572n2/55227/brief/55227.abstract.html (2002) http://xxx.lpthe.jussieu.fr/abs/astro-ph/0209176 (2002) article (2002) article (2003) article (2003) http://xxx.lpthe.jussieu.fr/abs/astro-ph/0302352 (2003) http://www.aas.org/publications/baas/v35n4/dda2003/62.htm (2003) http://vo.obspm.fr/exoplanetes/encyclo/papers/austria04.pdf (2003) http://fr.arxiv.org/abs/astro-ph/0404166 (2004) http://www.edpsciences.org/articles/aa/abs/2005/26/aa2656-05/aa2656-05.html (2005)
Astrometric Mass Estimation (2002)[]
- article
- http://www.space.com/scienceastronomy/wobble_seen_021203.html
- http://mcdonaldobservatory.org/news/releases/2002/1203.html
- http://hubblesite.org/newscenter/archive/releases/2002/27
Transit Attempts[]
http://www.spaceref.com/news/viewpr.html?pid=4833
Habital Zone Studies (2002-2005)[]
http://xxx.lpthe.jussieu.fr/abs/astro-ph/0211022 (2002)
Planet d Discovered (2005)[]
The smallest exoplanet and the first certain rocky planet is discovered
http://www.astronomy.com/asy/default.aspx?c=a&id=3283
http://www.sciencemag.org/cgi/content/summary/308/5729/1727a
http://nsf.gov/news/newsmedia/planet05/ms.pdf
http://www.universetoday.com/am/publish/large_rocky_planet.html
http://www.sciencenewsdaily.org/story-4634.html
http://www.shns.com/shns/g_index2.cfm?action=detail&pk=EDPLANET-06-16-05
http://www.space.com/searchforlife/seti_newplanet_050616.html
http://www.astrobio.net/news/modules.php?op=modload&name=News&file=article&sid=1603&mode=thread&order=0&thold=0
http://www.sfgate.com/cgi-bin/article.cgi?file=/c/a/2005/06/14/MNGELD861J1.DTL
http://www.newscientist.com/article.ns?id=dn7517
http://www.chron.com/disp/story.mpl/space/3223887.html
http://www.washingtonpost.com/wp-dyn/content/article/2005/06/13/AR2005061301469.html
http://www.astronomy.com/asy/default.aspx?c=a&id=3283
http://www.csmonitor.com/2005/0614/p03s01-usgn.html
http://news.bbc.co.uk/1/hi/sci/tech/4089534.stm
http://www.space.com/scienceastronomy/050613_super_earth.html
http://www.nsf.gov/news/news_summ.jsp?cntn_id=104243&org=NSF&from=news
Planet d Must be Dense[]
Calculations show that in order to avoid evaporation by its star, planet d must have a density of greater than 3 g cm^-3 and contain a large fraction of massive elements. http://www.aanda.org/index.php?option=com_base_ora&access=standard&Itemid=129&url=articles/aa/abs/2007/03/aa5014-06/aa5014-06.html
Red Dwarf Studies[]
http://xxx.lpthe.jussieu.fr/abs/astro-ph/0204352 (2002) http://fr.arxiv.org/abs/astro-ph/0503260 (2005)
Planet d Studies[]
http://fr.arxiv.org/abs/astro-ph/0508305 (2005)
Internal Conditions of Planet d Modelled (2006)[]
http://www.ur.umn.edu/FMPro?-db=releases&-lay=web&-format=umnnewsreleases/releasesdetail.html&-RecID=35401&-Find
http://sample_url.com
Planets Coplanar (2008)[]
http://www.skyandtelescope.com/news/37338479.html
Planet e discovered, resonates with a and b (2010)[]
http://news.sciencemag.org/sciencenow/2010/07/scienceshot-planets-sing-in-thre.html
See Also[]
- Aliases: IL Aquarii System and Ross 780 System, Gliese 876 System
- Nearest Yellow Dwarf Star: Tau Ceti System