Exoplanetary Wiki

This mini-wiki is intended to collect all interesting facts about exoplanetary systems. Planetary System articles are not written in encyclopedic format, but rather in bullet form. This can really be considered a "scratch-pad" for exoplanetary systems information, just jot down notes as seen fit. Links to other sites, message board threads, and news articles are encouraged. When creating a new system, please copy the the page Stellar System Boilerplate and fill in the details.

This wiki started out as a set of "System of the Day" posts at the bullitin board of the Extrasolar Visions web site. Concepts and terminology found in that web site are supported in this wiki. Speculations are also welcome.

Substellar Systems in the News
Index of systems that have been in the news. Sorted by the date of the most recent headline news the system is featured in. Each system should only appear once in this list. For news articles not about any particular system, see General Exoplanet News.

Systems of 2007

 * HD 189733 System (May 07) - Planet b is the nearest transiting exoplanet (62.9 ly). It is the first exoplanet to have its infrared spectrum measured.  They failed to find water, but dark silicate clouds might be covering them up.  A temperature map was made recently showing that heat was transported efficiently.
 * Corot-exo-1 System (May 07) - Planet b is the first exoplanet discovered by the Corot satelite.
 * Hat-P-2 System (May 07) - Hat-P-2b is the most massive transiting exoplanet discovered, has very eccentric orbit.
 * OGLE-TR-10 System (May 07) - Found to have the lowest measured surface gravity of any of the transiting exoplanets, considerably less than Earth.
 * Gliese 581 System (Apr 07) - Planet c is the first terrestrial world found within its star's habitability zone.
 * 2MASSW J0746425+2000321 System - Binary Brown Dwarf system. One was found to pulse radio waves similar to a pulsar, outshining its companion during a pulse in IR.
 * HD 209458 System (Apr 07) - Has famous "inflated" transiting hot Jupiter "Osiris". They detected water in its atmosphere (they had failed earlier), the first time this has been done for any exoplanet.
 * Helix Nebula (Feb 07) - The nearest planetary nebula. The dust observed may be from thousands of comets banging into each other.
 * Mira System (Jan 07) - Well known binary star. It was found that material from the dying red giant was being syphoned off by the white dwarf in the system, beginning a new planetary system.
 * 51 Pegasi System, HD 179949 System (Jan 07): Tidally locked Hot Jupiters in these systems were found to have supersonic winds that caused the eternal night-side hemisphere to be as hot as the day-side one.
 * 55 Cancri System (Jan 07) - 1st extra-solar system known to have four planets. Simulations have recently shown that the orbit of planet e is unstable.

Systems of 2006

 * Tau Bootes System (Nov 06) - First planet-bearing star to have its magnetosphere probed. Hot Jupiter is embedded within it.
 * 54 Piscium System (Oct 06) - Nearby star with an eccentric planet. A recently discovered faint distant T type brown dwarf may be the cause of this eccentricity.
 * Epsilon Eridani System (Oct 06) - Planet b found to be the first planet known to orbit within the protoplanetary disk it was formed in.
 * Upsilon Andromedae System (Oct 06) - Well known multiplanet system. Roaster Planet b found to be hot on one side and cold on the other.
 * Sweeps 10 System (Oct 06) - Has the planet with the shortest period among the five Ultra-Short-Period Planets detected by Hubble near the Galactic Bulge. Orbits small star in only 10 hours.
 * HD 97048 System (Oct 06) - A young star in the Chamelion I Dark Cloud discovered to have a "Flaring" disc of dust.
 * WASP-1 System, WASP-2 System (Sep 06) - Have transiting Hot Jupiters, the first planets detected by the UK SuperWASP program. WASP-1 is the 3rd "puffed up" planet discovered.
 * HAT-P-1 System (Sep 06) - Contains the planet with the biggest known diameter and the least dense. This is the second "inflated" Hot Jupiter discovered.
 * GSC 03549-02811 System (Sep 06) - Discovery of transiting planet TrES-2, which was the most massive nearby transiting planet known at the time.
 * CHXR 73 System (Sep 06) - Contains a very large planet detected by Hubble in a very distant orbit around a Red Dwarf. Imaged object is basically a planet formed the way a brown dwarf is.
 * Oph1622 System (Aug 06) - Discovery of a planemo orbiting another planemo announced. Later mass estimates proved these to both be Brown Dwarves though.
 * Mu Arae System (Aug 06) - Nearby multiplanet system that contains the first Neptunian discovered. Recent discovery of Planet e in the habitable zone made this the second known four-planet system after 55 Cancri.
 * OGLE-2003-BLG-235L System - A red dwarf with a planet discovered through microlensing in 2004. It took a few years to actually image the star itself (by Hubble).
 * HD 38529 System (Jul 06) - Subgiant star with a Jovian, Brown Dwarf, and Red Dwarf companion. Simulations showed that Earth-sized planet could exist between the planet and brown dwarf, but that an asteroid belt can be expected there instead.
 * HD 37124 System (Jul 06) - Sunlike star with Jovian planets that received Venus-like, Mars-like, and Asteroid Belt-like radition from their stars. Simulations showed that no terrestrial planets could form between the Venus-like and Mars-like Jovian planets.
 * HD 74156 System (Jul 06) - Sunlike star with two planets more massive than Jupiter, one in about Mercury's position, and one at an Asteroid Belt-like position. Simulations showed that no terrestrial planets could form between the two planets.
 * Cassiopeia A System (Jul 06) - A supernova remnant and the brightest extrasolar radio source in the sky. Planets may be forming in the debris field.
 * Beta Pictoris System (Jun 06) - First star found to have a circumstellar disk. In 2006, a second disk on a different plane was detected, believed produced by a Jovian planet.  Also, Carbon Planets may be forming here.
 * 2M1207 System (Jun 06) - Has a Planemo orbiting a brown dwarf, which is possibly the first "planet" imaged. A disk around the Brown Dwarf was known, but recently a disk around the Planemo was also detected.
 * HD 69830 System (May 06) - First multi-planet system found that does not have a Jupiter-sized planet. Contains 3 Neptunians and an asteroid belt.
 * XO-1 System (Apr 06) - Transiting hot jupiter discovered with the use of backyard telescopes. It is about the same size of Jupiter and has a very small core.
 * 4U 0142+61 System (Apr 06) - The first Neutron Star to have a debris disk detected, possibly forming planets.
 * OGLE-2005-BLG-169L System (Mar 06) - Detection of the second icy Super-Earth via the Microlense technique.
 * Gliese 876 System (Feb 06) - Very nearby triple planet system. Contains the first found likely rocky planet around a normal star (the first "Super-Earth").  The internal conditions of this planet were recently simulated.
 * HD 149026 System (Feb 06) - Contains a Saturn mass planet with a large dense core. Internal conditions of this planet were recently simulated.
 * Ophiuchus Mixed Up Disk System (Feb 06) - The first solar system observed with the inner disk rotating in the opposite direction as the outer disk (not sure what its name is).
 * R 66 System and R 126 System (Feb 06) - Hypergiant stars in Large Magellanic Cloud that have detected dust disks and are possibly forming planets.
 * OGLE-2005-BLG-390L System (Jan 06) - Has smallest yet detected exoplanet orbiting a star at the time. Has five times Earth's mass.  Detected by micro-lensing.  First discovered Icy Super Earth.
 * HD 53143 System (Jan 06) - Old nearby sunlike star with wide kuiper belt similar to solar system's.
 * HD 139664 System (Jan 06) - Old nearby sunlike star with narrow kuiper belt similar to solar system's.
 * G29-38 System (Jan 06) - White dwarf star found to have a debris disk thought to be the result of an asteroid collision.

Systems of 2005

 * BD +20 307 System (Jul 05) - Sunlike star with a warm dust disk which may be signs that an Earth-like planet is forming there.
 * HD 188753 System (Jul 05) - First triple star system found to have a planet, which was nicknamed "The Tatooine Planet".
 * GQ Lupi System (May 05) - Contains a planet that might be the first planet imaged.
 * OGLE-2005-BLG-071 System (May 05) - Contains the second planet discovered by micro-lensing, validating the technique.
 * GSC 02652-01324 System (Mar 05) - Contains well-studied transiting planet TrES-1, whose light was separated from its host star.
 * OTS 44 System (Jan 05) - Very low mass Brown Dwarf found to have a circumstellar disk.

Systems of 2004

 * Gliese 436 System (Sep 04) - Nearby red dwarf that contains one of the first Neptunians discovered.
 * OGLE-TR-113 System and OGLE-TR-132 (Apr 04) - 2nd and 3rd Very Hot Jupiters discovered.

Systems of 2003
OGLE-TR-56 System - Contains first Very Hot Jupiter discovered. Discovered by transit, confirmed with Dopplar Spectroscopy.

Index of Nearby Substellar Systems
8.25 ly - Lalande 21185 System (3 unconfirmed planets around a red dwarf) 10.5 ly - Epsilon Eridani System (eccentric jovian, kuiper belt, and suspected planets around a yellow dwarf) 11.8 ly - Epsilon Indi System (brown dwarve around a brown dwarf around an orange star) 11.9 ly - Tau Ceti System (kuiper belt around a yellow star) 13.2 ly - DENIS 1048-39 System (free floating brown dwarf or red dwarf) '''14.8 ly - Gliese 674 System (neptunian around a red dwarf) 15.4 ly - Gliese 876 System (hot super earth, eccentric jovian, and jovian around a red dwarf) 16.3 ly - LP 944-20 System (free floating brown dwarf) 18.7 ly - 2MASS 0415-0935 System (brown dwarf) 18.8 ly - Gliese 229 System (brown dwarf around a red dwarf) 19.3 ly - Gliese 570 System (triple star system with a brown dwarf) 20.4 ly - Gliese 581 System (hot neptunian and 2 super earths around a red dwarf) 25.1 ly - Fomalhaut System (blue star with protoplanetary disk and possible planets) 26.0 ly - Vega System (blue star with dust disk and possible planets) '''28.6 ly - Gl 849 System (jovian and possible planet around a red dwarf) 32.4 ly - AU Microscopii System (red dwarf with dust disk) '''33.5 ly - Gliese 436 System (Hot Neptunian around a Red Dwarf) 36.2 ly - 54 Piscium System (super-jupiter around an orange star) 39.2 ly - Gliese 86 System (hot super-jupiter and white dwarf around an orange star) 38.4 ly - Gamma Cephei System (jovian and red dwarf around an orange sub-giant) 41.0 ly - HD 69830 System (2 hot jupiters, jovian, and asteroid belt around a yellow-orange dwarf) Pollux System 42.0 ly - 51 Pegasi System (hot jupiter around a yellow dwarf) 42.1 ly - HD 147513 System (jovian and white dwarf around a yellow dwarf) 43.7 ly - 55 Cancri System (hot super-earth, 2 hot jupiters, eccentric jovian, and red dwarf around a yellow dwarf) 44.0 ly - 47 Ursa Majoris System (2 jovians around a yellow dwarf) 52.0 ly - Upsilon Andromedae System (hot jupiter, 2 eccentric jovians, and a red dwarf around a white star)