Notes for Gliese 876

update: 29 March 2005

The planet(s):

Detection method: Radial Velocity

Basic data:

Name:	Gl 876 b	Gl 876 c
M.sini:	1.89 M_J	0.56 M_J
Semi-major axis:	0.21 AU	0.13 AU
Orbital period:	61.02 d.	30.1 d
Eccentricity:	0.10	0.27
Inclination	sini = 0.6 ?	sini = 0.6 ?
Omega (deg):	333	330
T_peri (JD-2450000):	106.2	31.4
Inclination:	?	84^o ± 6 (Benedict et al 2002)

Remarks:
- 7 march 01: From stability considerations, Lauglin & Chambers argue that "the facteors for the 2 planets are likely in the 1.25 - 2.0 range" (implying a sini of ~ 0.6 (Chambers & Laughlin, 2001)
- Circumstellar disk searched for at UKIRT and KECK but not found (Trilling et al. 1999, 2000)
References:
1. BARNES R. & QUINN Th., 2004
  The (In)Stability of Planetary Systems.
  ApJ., submitted
  preprint
2. BEAUGE C., FERRAZ-MELLO S. & MICHTCHENKO T., 2004
  Planetary Migration and Extrasolar Planets in the 2/1 Mean-Motion Resonance.
  MNRAS, submitted
  preprint
3. BEAUGE C. & MICHTCHENKO T., 2003
  Modelling the high-eccentricity planetary three-body problem. Application to the GJ876 planetary system.
  MNRAS, 341, 760
  paper
4. BENEDICT F., McARTHUR E., FORVEILLE T., DELFOSSE X., NELAN E., BUTLER R., PIESMAN W., MARCY G., GOLDMAN B., PERRIER C., JEFFREYS W. & MAYOR M., 2002
  A Mass for the Extrasolar Planet Gl 876b Determined from Hubble Space Telescope Fine Guidance Sensor 3 Astrometry and High-Precision Radial Velocities.
  ApJ. Letters, 581, 581, L115
  paper
5. DELFOSSE X., FORVEILLE T., MAYOR M. PERRIER C., NAEF D.& QUELOZ D., 1998
  The closest extrasolar planet. A giant planet around the M4 dwarf Gl 876
  Astron. & Astrophys., 338, L67
  paper
6. GOZ'DZIEWSKI K. & BOIS E., 2002
  Global dynamics of the Gliese 876 planetary system.
  MNRAS, 332, 839
  paper
7. HADJIDEMETRIOU J., 2002
  Resonant periodic motion and the stability of extrasolar planetary systems.
  Celestial Mechanics and Dynamical Astronomy, in press preprint
8. JI J., LIU L., KINOSHITA H., ZHOU J., NAKAI H. & LI G., 2003
  The Librating Companions in HD 37124, HD 12661, HD 82943, 47 Uma and GJ 876: Alignment or Antialignment?
  ApJ. Letters, 1 July
  preprint
9. JI J., LI G. & LIU L., 2002
  The dynamical simulations of the planets orbiting GJ 876.
  ApJ., 572, 1041
  paper
  erratum
10. JI J., LI G.. & LIU L., 2002
  The Dynamical Simulations of the Planets Orbiting GJ 876.
  ApJ, 572, 20 June
  preprint
11. JI J., LIU L., KINOSHITA H., LI G. & NAKAI H., 2004
  The Stability Analysis of the Extrasolar Planetary Systems.
  in IAU Symposium 219: Stars as Suns: Activity, Evolution, and Planets, eds. A. K. Dupree & A. Benz
  paper
12. JONES B. & SLEEP P., 2002a
  The Orbits of Terrestrial Planets in the Habitable Zones of Known Exoplanetary Systems.
  in Scientific Frontiers in Research on Extrasolar Planets, edited by Deming and Seager. ASP Conference Series.
  paper
13. KINOSHITA H. & NAKAI H., 2001
  Stability of the GJ 876 Planetary System.
  PASJ, 53, L25
  paper
14. KLEY W., LEE M.-H., MURRAY N. & PEALE S., 2005
  Modeling the resonant planetary system GJ876.
  Astron. & Astrophys., in press
  preprint
15. KLEY W., 2003
  Dynamical Evolution of Planets in Disks.
  in Proc. of IAU Colloquium 189, Astrophysical Tides
  paper
16. LAUGHLING G., BUTLER P., FISCHER D., MARCY G., VOGT S. & WOLF A. , 2004
  The GJ 876 Planetary System -- A Progress Report.
  ApJ., accepted
  preprint
17. LAUGHLIN G. & CHAMBERS J., 2001
  Short-Term Dynamical Interactions Among Extrasolar Planets.
  ApJ. Lett.,551, L109
  paper
18. LEE M. & PEALE S., 2001
  Evolution of the GJ876 Planets into the 2:1 Orbital Resonance.
  BAAS, 34, #3.03
  paper
19. LEE M. & PEALE S., 2002c
  Extrasolar Planets and Mean-Motion Resonances.
  in Scientific Frontiers in Research on Extrasolar Planets, Deming & Seager Eds. (ASP Conf. Series)
  paper
20. LEE M. & PEALE S., 2003a
  Diversity and Origin of 2:1 Orbital Resonances in Extrasolar Planetary Systems.
  BAAS, 35, No4, 12.06.
  abstract
21. MARCY G., BUTLER P., FISCHER D., VOGT S., LISSAUER J. & RIVERA E., 2001b
  A Pair of Resonant Planets Orbiting GJ 876.
  ApJ., 556, 296
  paper
22. MARCY G., BUTLER P., VOGT S., FISCHER D. & LISSAUER J., 1998
  A Planetary Companion to the M4 Dwarf, Gliese 876
  ApJ. Letters. 505, L147
  paper
23. MARCY G., BUTLER P. & VOGT S., 1998
  Searches for planetary companions with Lick, Keck and AAT.
  in Proceedings of IAU Colloquium 170, Precise stellar radial velocities (J.B.Hearnshaw & C.D.Scarfe Eds.), ASP Conf. Series (1999) in press
  abstract
24. NAUENBERG M., 2001
  Determination of Masses and Other Properties of Extra-Solar Planetary Systems with More than One Planet.
  ApJ., 568, 369
  paper
25. PSYCHOYOS D.& HADJIDEMETRIOU J. , 2003
  Dynamics of 2/1 Resonant Extrasolar Systems: Application to HD82943 and Gliese 876.
  Cel. Mech. & Dyn. Astron., to appear
  preprint
26. RIVERA E. & LISSAUER J., 2002
  Dynamical Models of the Resonant Pair of Planets Orbiting the Star GJ 876.
  in DDA 33rd Meeting
  BAAS, 34, #9.03
  abstract
27. RIVERA E. & LISSAUER J., 2003 Dynamical Models of the Planets Orbiting the Star GJ 876 Subject to Doppler and Astrometric Constraints.
  BAAS, 35, No4, 8.03.
  abstract
28. RIVERA E. & LISSAUER J., 2003a Dynamical Models of the Planets Orbiting the Star GJ 876 Subject to Doppler and Astrometric Constraints.
  BAAS, 35, No3, 33.06
  abstract
29. SNELLGROVE M., PAPALOIZOU J. & NELSON R., 2001
  On disc driven inward migration of resonantly coupled planets with application to the system around Gj876.
  Astron. & Astrophys., submitted
  preprint
30. RIVERA E. & LISSAUER J., 2001
  Dynamical Models of the Resonant Pair of Planets Orbiting the Star GJ 876.
  ApJ, submitted
31. TAMBURINI F., BIANCHINI A. & ORTOLANI S., 2002
  Polarization statistics of extra-solar systems.
  Astron. & Astrophys., submitted
  preprint
32. TRILLING D., BROWN R. & RIVKIN A., 1999
  Circumstellar dust disks and extrasolar planets: Far-off analogs of our Solar System
  in 31^st Annual Meeting of the DPS
  abstract
33. TRILLING D., BROWN R. & RIVKIN A., 2000
  Circumstellar Dust Disks around Stars with Known Planetary Companions.
  ApJ., 529, 499
  paper
Other Web pages:
1. Data and velocity curves (California & Carbenie Planet Search)
2. Geneva Observatory data
3. Protoplanetary disk with 2 planets (G. Bryden)

The star:

Distance: 4.72 pc
Spectral type: M4V
Apparent magnitude: V = 10.17
Absolute luminosity: 0.0124 L_sun
Coordinates (2000): RA = 22 53 13.4& nbsp; DEC = -14 15 13
Metallicity: [Fe/H]= 0.
Mass (M_sun): M= 0.32
More data:
- Basic Data (from simbad )
- Most recent refs. (from ADS; enter ` ' in the `objects' field)

Back to the Extra-solar Planets Catalog