List of extrasolar planet extremes
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The following are lists of extremes among the known extrasolar planets.
Contents |
[edit] Characteristics
| Title | Planet | Star | Notes |
|---|---|---|---|
| Oldest | PSR B1620-26c | PSR B1620-26 | 12.7 billion years old |
| Least massive | PSR B1257+12 A | PSR B1257+12 | 0.02 MEarth
|
| Largest | HAT-P-1b | ADS 16402 B | Has a radius of 1.36 RJupiter
|
| Most distant | OGLE-2005-BLG-390Lb | OGLE-2005-BLG-390L | 21,500 ± 3,300 light years
|
| Least distant | Epsilon Eridani b | Epsilon Eridani | 10.4 light years |
| Most dense | 55 Cancri e | 55 Cancri | 12.6 g/cm³ |
| Least dense | HAT-P-1b | ADS 16402 B | 0.29 g/cm³ |
| Longest period | 2M1207b | 2M1207 | 2450+ years |
| Shortest period | OGLE-TR-56b | OGLE-TR-56 | 1.2 days
|
| Most eccentric orbit | HD 80606 b | HD 80606 | eccentricity of 0.927 |
| Least eccentric orbit | PSR B1257+12 A | PSR B1257+12 | eccentricity of 0.0 |
| Most inclined orbit | OGLE-TR-113b | OGLE-TR-113 | inclination 89.4° |
| Least inclined orbit | Epsilon Eridani b | Epsilon Eridani | inclination 30.1°
|
| Largest orbit | 2M1207b | 2M1207 | 55+ AU |
| Smallest orbit | Gliese 876 d | Gliese 876 | 0.021 AU
|
[edit] Discovery firsts
| Title | Planet | Star | Year | Notes |
|---|---|---|---|---|
| First planet discovered | PSR B1257+12 B, C | PSR B1257+12 | 1992 | first extrasolar planets discovered
first known pulsar planets |
| 51 Pegasi b | 51 Pegasi | 1995 | first known planet orbiting a Sun-like star first planet discovered by radial velocity method |
|
| Gliese 876 b | Gliese 876 | 1998 | first known planet orbiting a red dwarf | |
| HD 209458 b | HD 209458 | 1999 | first transiting planet
|
|
| Iota Draconis b | Iota Draconis | 2002 | first known planet orbiting a giant star | |
| OGLE-2003-BLG-235Lb | OGLE-2003-BLG-235L | 2004 | first planet found by gravitational lensing method | |
| PSR B1620-26c | PSR B1620-26 | 1993 | first known planet orbiting a white dwarf (confirmed 2003) | |
| 2M1207b | 2M1207 | 2004 | first known planet orbiting a brown dwarf first directly imaged planet |
|
| OGLE-2005-BLG-390Lb | OGLE-2005-BLG-390L | 2006 | first cool, possibly rocky/icy planet around main-sequence star | |
| First free-floating planet discovered | S Ori 70 | n/a | 2004 | has mass of 3 MJupiter, needs confirmation
|
| First planet in a multiple star system discovered | 55 Cancri b | 55 Cancri | 1996 | 55 Cnc has distant red dwarf companion
|
| First planet orbiting multiple stars discovered | PSR B1620-26c | PSR B1620-26 | 1993 | orbits pulsar - white dwarf pair |
| First multiple planet system discovered | PSR 1257+12 A, B, C | PSR 1257+12 | 1992 | a pulsar planetary system |
| First planet in star cluster | PSR B1620-26c | PSR B1620-26 | 1993 | located in Globular Cluster M4 |
[edit] Most Earthlike planets
| Title | Planet | Star | Notes |
|---|---|---|---|
| Closest planet to 1 MEarth | PSR 1257+12 C | PSR 1257+12 | 3.9 MEarth |
| Closest planet to 1 AU orbital | HD 142 b | HD 142 | 0.980 AU |
| HD 28185 b | HD 28185 | 1.0 AU | |
| HD 128311 | HD 128311 | 1.02 AU | |
| Closest planet to 365-day orbit | HD 142 b | HD 142 | 337 |
| HD 92788 b | HD 92788 | 378 | |
| Closest in type | OGLE-2005-BLG-390Lb | OGLE-2005-BLG-390L | around main-sequence star, cool, possibly rocky/icy |
