17 Planetary Systems Around M Dwarfs
in order of increasing stellar mass
revised June 2010
|
Star |
Type |
Mass (MSOL) |
[Fe/H] |
Distance Parsecs |
P |
Mass |
a (AU) |
e |
Period |
|
|
|
|
|
|
|
|
|
|
|
|
GJ 1214 |
M4.5 |
0.16 |
+0.28 |
13.0 |
b |
6.55 E |
0.014 |
0 |
1.58 d |
|
GJ 317 |
M3.5 |
0.24 |
-0.20 |
9.17 |
b |
1.2 J |
0.95 |
0.19 |
693 d |
|
GJ 581 |
M3 |
0.31 |
-0.22 |
6.27 |
e |
1.94 E |
0.03 |
0.00 |
3.1 d |
|
GJ 581 |
M3 |
0.31 |
-0.10 |
6.27 |
b |
15.7 E |
0.04 |
0.00 |
5.4 d |
|
GJ 581 |
M3 |
0.31 |
-0.10 |
6.27 |
c |
5.36 E |
0.07 |
0.17 |
12.9 d |
|
GJ 581 |
M3 |
0.31 |
-0.10 |
6.27 |
d |
7.09 E |
0.22 |
0.38 |
66.8 d |
|
GJ 876 |
M4 |
0.33 |
+0.23 |
4.69 |
d |
6.83 E |
0.02 |
0.21 |
1.94 d |
|
GJ 876 |
M4 |
0.32 |
+0.37 |
4.70 |
c |
0.71 J |
0.13 |
0.26 |
30.1 d |
|
GJ 876 |
M4 |
0.32 |
+0.37 |
4.70 |
b |
2.28 J |
0.21 |
0.03 |
61.1 d |
|
GJ 876 |
M4 |
0.32 |
+0.37 |
4.70 |
e |
14.6 E |
0.33 |
0.06 |
124 d |
|
HIP 57050 |
M4 |
0.34 |
+0.32 |
11.0 |
b |
0.28 J |
0.16 |
0.19 |
41.4 d |
|
GJ 674 |
M2.5 |
0.35 |
-0.24 |
4.54 |
b |
10.5 E |
0.04 |
0.20 |
4.7 d |
|
GJ 179 |
M3.5 |
0.36 |
+0.20 |
12.3 |
b |
0.82 J |
2.41 |
0.21 |
6.26 yr |
|
GJ 667C * |
M1.5 |
- |
- |
6.97 |
b |
5.7 E |
~0.05 |
0 |
~7 d |
|
GJ 676A * |
M0 |
- |
- |
16.1 |
b |
4.0 J |
- |
- |
2.75 yr |
|
HIP 12961 * |
M0 |
- |
- |
23.8 |
b |
0.47 J |
- |
- |
57 d |
|
GJ 832 |
M1.5 |
0.45 |
-0.24 |
4.93 |
b |
0.64 J |
3.4 |
0.12 |
~9 yr |
|
GJ 436 |
M2.5 |
0.47 |
+0.10 |
10.2 |
b |
22.6 E |
0.03 |
0.14 |
2.64 d |
|
GJ 433 * |
M1.5 |
0.48 † |
- |
9.04 |
b |
6.0 E |
~0.05 |
0 |
~7 d |
|
GJ 849 |
M3.5 |
0.49 |
+0.41 |
8.77 |
b |
0.83 J |
2.35 |
0.07 |
~5 yr |
|
HIP 79431 |
M3 |
0.49 |
+0.35 |
14.4 |
b |
2.1 J |
0.36 |
0.29 |
112 d |
|
GJ 176 |
M2 |
0.50 |
+0.18 |
9.40 |
b |
8.4 E |
0.07 |
0 |
8.8 d |
|
GJ 649 |
M1.5 |
0.54 |
-0.03 |
10.34 |
b |
0.33 J |
1.14 |
0.30 |
598 d |
Notes: Column 1 gives
the star name. Column 2 gives the spectral type. Column 3 gives the star mass
as a fraction of our Sun. Column 4 gives the star metallicity (Sol = 0). Column
5 gives the star's distance from Earth in parsecs and light years. Column 6
gives the planet designation. Column 7 gives the planet mass, expressed in
terms of Jupiter mass for gas giant planets (mass > 0.2 Mjup)
and Earth mass for icy and terrestrial planets. Column 8 gives the planet's
distance from the host star in astronomical units. Column 9 gives the orbital
eccentricity. Column 10 gives the orbital period, either in days (d) or in
years (yr) as appropriate.
*
Preliminary data from the Extrasolar Planets Encyclopaedia pending publication of discovery
papers.
†
Stellar mass from Zechmeister et al. 2009 (A&A
505:859-871).
As
available, metallicities follow Schlaufman &
Laughlin 2010 (A&A in press).
Data
on GJ
1214 from
Charbonneau et al. 2009 (Nature 462:891-894); GJ 317 from Johnson et al. 2007 (ApJ 670:833–840); GJ 581 from Udry et al. 2007 (A&A 469:L43–L47), Mayor et al. 2009 (A&A
507:487-494); GJ 876 from Rivera et al.
2010 (ApJ in press); HIP 57050 from Haghighipour et al. 2010 (ApJ 715:271–276); GJ 674 from Bonfils et al. 2007 (A&A 474:293-299); GJ 179
from Howard et al 2010 (ApJ in press); GJ 832 from Bailey et al. 2009 (ApJ 690:743-747); HIP 79431 from Apps et al. 2010 (PASP 122:156-161);
GJ 176 from Forveille
et al. 2009 (A&A 493:645-650); GJ 649 from Johnson et al. 2010 (PASP 122:149-155). Other data from Bean et al. 2006 (ApJ 653:L65-L68),
Butler et al. 2006 (PASP 108), and the Catalog
of Nearby Exoplanets.