Extrasolar Planetary Systems
                                                          © S.Ferraz-Mello


Extrasolar Planetary System around MS stars [pdf]

(With 2 or more planets)

  

       Extrasolar Planetary System around one pulsar
(With 2 or more planets)

Star &
Planets
Period
Ratio(*)
Mass
(m_Earth)
(*
**)
Semi-Axis
(AU)
Period
(days)
Eccentricity Inclination
on sky
plane (deg)
Orbit taken
from
PSR B1257+12
A,B,C
2.63
1.48

0.02 (**)
4.3
3.9
 
0.19
0.36
0.47

25.262
66.5419
98.2114

0.0
0.0186
0.0252
 ?
53
47
Konacki &
Wolszczan
(2003)

(*) Period ratio between planets in consecutive orbit; (**) Assuming planet inclination of 50 degrees; (***) Adopted pulsar mass = 1.4 M_sun.


       Outer Solar System

Planet
Period
Ratio(*)
Mass
(m_Jup)
Semi-Axis
(AU)
Period
(years)
Eccentricity Inclination on
the ecliptic
(deg.)
Jupiter
Saturn
Uranus
Neptune
2.500
2.831
1.958

1.0
0.30
0.046
0.054
5.204
9.584
19.178
30.004
11.866
29.668
83.987
164.493

0.0489
0.0571
0.0468
0.0112
1.3
2.5
0.6
1.6

(*)Period ratio between planets in consecutive orbits


Planet Pairs Classes (*)
CLASS Period Ratio Features Members  [pairs] Notes
Ia typical 2-3
(but 5 in the pair with a brown-dwarf)
Low Period Ratio;
Mean-Motion
resonances;
high eccentricities

GJ 876 [c,b]
HD 73526
HD 128311
HD 82943
HD 202206




w/ b
rown-dwarf
Ib < 3 Low Period Ratio
Low eccentricities
often near resonances
HD 160691 [e,b]
GJ 581 [b,c]
HD 155358
55 Cnc [b,c]
PSR B +1257-12 [A,B,C]
outer Solar System
inner Solar System
(2.09) Ia ???


(3.03) Ia ???
II 4-15 Intermediate Period Ratio
Important secular dynamics
HD 69830 [c,d]
HD 177830
HD 108874
55 Cnc [e,b],[c,f]
HD 160691 [b,c]
upsilon And [b,c,d] 
HD 37124 [b,d]
HD 69830[c,d]
HD 12661

GJ 581 [c,d]
HD 74156 [b,d,c]
47  UMa
HD 74156
HD 169830 [b,c,d]
HD 14810
(?) cand. IIb





[b,c](52,2)III(?)


 



ex Ib
III > 30 High Period Ratio
Weaker interaction
Hierarchical
GJ 876 [d,c]
55 Cnc [f,d]
HD 168443
HD 160691 [d,e]
HD 11964
HD 38529
HD 190360
HD 217107
HD 68988
HD 187123

(*) Ferraz-Mello et al. (2005)

REFERENCES [pdf]



LINKS

PLANETAS EXTRA-SOLARES (EM PORTUGUÊS)

USP-UNC team on Exoplanets

Institute of Astronomy, Geophysics and Atmospheric Sciences