List of unconfirmed exoplanets

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This is a list of unconfirmed extrasolar planets. When a planet candidate is confirmed, please remove it from this list and move it to List of stars with confirmed extrasolar planets.

For a list of unconfirmed brown dwarfs, see list of brown dwarfs.

In addition to known extrasolar planets, there are many planet candidates whose existence is more or less uncertain, or they are now known not to exist.

Contents 1 Probable extrasolar planets 2 Candidates that cannot be confirmed 3 Doubtful candidates 4 Disproven candidates 5 Proplyds with gaps and no known planets 6 See also 7 References 8 External links

[edit] Probable extrasolar planets

There are a number of exoplanet candidates that are waiting to be confirmed.

star	planet	minimum mass (× Jupiter)	orbital period (days)	orbital distance (× Earth)	orbital eccentricity	inclination	discovery year
1SWASP-J115718.66+261906.1	b		1.226804				2007
1SWASP-J130322.00+350525.4	b		2.674207				2007
1SWASP-J152131.01+213521.3	b		1.338018				2007
1SWASP-J160211.83+281010.4	b		3.941554				2007
1SWASP-J160242.43+290850.1	b		1.304693				2007
1SWASP-J161732.90+242119.0	b		1.453738				2007
unpublished (Anon-1) [1]		0.3	1.3381	0.024	0
Beta Pictoris		2	19 y	8
CM Draconis	c	0.85	735	1
COROT-Exo-1	b	0.99	1.5089557		0	85.53	2007
COROT-Exo-2	b	3.53	1.7429964		0	89.13	2007
CSI +06-18266 1[2]
Epsilon Eridani	c	~0.1	~280 y	~40	~0.3		2002
EXP1 J1628-52c07s18161[3]
Fomalhaut		40
GD 66	b	2.11	1650	2.356	0		2007
Gliese 317	c	0.83	2700		0.42		2007
Gliese 849
GM Aurigae	b	1.7	4 y	2.5
HD 111031	b	2.87	5986		0.32		2007
HD 17156	c	0.063	111.314	0.481	0.136		2008
HD 147506	c
HD 154857	c		1900		0.25		2007
HD 208487	c	0.46?	908?	1.8?	0.19?
HD 24040	b	4.04	3400	4.68	0.068		2006
HD 28185
HD 50499	c	1.7	6.8 yr				2005
HD 50499	d	2	>10 yr				2005
HD 68988	c	5.29	4100	5.32	0.01		2006
OGLE-TR-111	c	0.7	16.0644	0.12
OGLE-TR-125	b
OGLE-TR-130	b
OGLE-TR-131	b
OGLE-TR-3	b	0.5	1.1899	0.025		90
Phi2 Pavonis	b	0.69	42.5	0.25	0.429		1998
PSR B1828-11	b	0.002 ME					2007
SWEEPS-01	b		1.56	0.025		>86	2006
SWEEPS-02	b		0.912	0.015		>86	2006
SWEEPS-03	b		1.27	0.021		>86	2006
SWEEPS-05	b		2.313	0.03		>87	2006
SWEEPS-06	b		3.039	0.042		>86	2006
SWEEPS-07	b		1.747	0.027		>86	2006
SWEEPS-08	b		0.868	0.017		>84	2006
SWEEPS-09	b		1.617	0.025		>86	2006
SWEEPS-10	b	~1.6	0.424	0.008		>84	2006
SWEEPS-12	b		2.952	0.038		>87	2006
SWEEPS-13	b		1.684	0.027		>86	2006
SWEEPS-14	b		2.965	0.037		>87	2006
SWEEPS-15	b		0.541	0.01		>84	2006
SWEEPS-16	b		0.969	0.017		>85	2006
Tau Boötis
UNSW-TR 3[4]
UNSW-TR 4[5]
W 3(OH)	b			2000

[edit] Candidates that cannot be confirmed

Some potential exoplanet candidates have been detected through gravitational microlensing. Since these events are unique and the signal was not clear enough, these planets cannot be confirmed.

star	planet	minimum mass (× Jupiter)	orbital period (days)	orbital distance (× Earth)	discovery year
MACHO 94-BLG-4[6]	b	5		1	1994
MACHO 95-BLG-3	b	2		5	1995
MACHO 98-BLG-35[7]	b	1 ME			1998
a candidate within the elliptical galaxy YGKOW G1		3 ME

[edit] Doubtful candidates

There are many postulated exoplanets that now seem unlikely to exist.

star	planet	minimum mass (× Jupiter)	orbital period (days)	orbital distance (× Earth)	orbital eccentricity	inclination	discovery year
61 Cygni	Aa	6
	Ab	12
	Ba	7
Aldebaran	b	~11	653.8	~2	0.182		1997
Barnard's Star	b
	c
Geminga	b	1.7 ME	5.1 y	3.3			1997
Gliese 436	c	4.7 ME	5.1859	0.0450	0.2		2008
HD 3346	b	10	30	0.3
HD 44179 B	b			1600
Iota Horologii	c		600
Lalande 21185	b	286.02	2118.508	2.0	0
	c	508.48	10957.8	10.0	0
OGLE-2002-BLG-055	b	5
PSR 0329+54	A	0.3 ME	3.3 y	2.3
PSR 0329+54	B	2.2 ME	16.9 y	7.3
PSR 1828-10	A	3 ME	0.68 y	0.93
PSR 1828-10	B	12 ME	1.35 y	1.32
PSR 1828-10	C	8 ME	2.71 y	2.1
Upsilon Andromedae A	e			5
Vega	b			56

[edit] Disproven candidates

There are several candidates that have been shown to be more massive than a planet, or not to be real at all.

star	planet	minimum mass (× Jupiter)	orbital period (days)	orbital distance (× Earth)	orbital eccentricity	inclination	discovery year	notes
70 Ophiuchi	Ab or Bb	10	17 y				1855
Gliese 570	b	0.75	400	1
HD 188753 A	b	1.14	3.3481	0.0446	0.00		2005
HD 219542 B	b	0.3	112.1	0.46	0.32
HD 223084	b	1.21	104.090	0.44
HD 34445	b	0.58	126	0.51	0.4		2004
HD 83443	c	54 ME	29.83	0.174			2000
MACHO-1997-BLG-41	b		7 y	3.5
Proxima Centauri	b			0.666
PSR B1257+12	D	100 ME	~100 y	40			1996
PSR 1829-10			0.5 y				1991
TMR-1	C							background star

[edit] Proplyds with gaps and no known planets

When planets are confirmed, please move to the list of confirmed planets.

Many young stars are accompanied with a protoplanetary disk. Some of the disks have are known to have gaps or other structures which may have been caused by an orbiting planet.

star	gap distance (in AU)	Notes
Beta Pictoris	50	Disc is warped
Cha 110913-773444		Smallest brown dwarf
GM Aurigae	300	Disc is warped
HD 141569	86 - 350	Separates inner and outer regions
Lynds 1551	0.1	Binary system 45 AU apart
OTS 44		Second smallest brown dwarf
Vega	5
Zeta Leporis	5.4	First extrasolar protoplanetary disc discovered
HD 113766	1.8, 4-9, 30-80	Evidence for the formation of Earth-like planets
HD 98800 B	5.9	Spitzer indicated that it may have a planet at between 1.5-2 AU from a star

[edit] See also

• List of stars with confirmed extrasolar planets
• List of extrasolar planet extremes
• List of hypothetical astronomical objects
• List of stars with proplyds
• List of brown dwarfs

[edit] References

[edit] External links

• Unconfirmed, controversial or retracted planets