Notes for Gl 777A

by Jean Schneider

update: 23 October 2004

The planet(s):

• Detection method: Radial Velocity
• Basic data:

  Name:	Gl 777A b
  M.sini:	1.33 MJ
  Semi-major axis:	4.8 AU
  Orbital period:	3902. ± 1758 d.
  Eccentricity:	0.48 ± 0.2
  Omega (deg):	361 ± 13
  T_peri (HJD):	50 557 ± 89
  Inclination:	-

• Remarks:
  20 apr. 03: Planet in wide (a ~ 3000 AU) binary system (Eggenberger et al 2003)
• References:
  1. ASGHARI N., BROEG C., CARONE L., CASAS-MIRANDA R., PALARIS J., CSILLIK I., DVORAK R., FREISTETTER F., HADJIVANTSIDES G., HUSEMANN H., KHRAMOVA A., KHRISOFOROVA M., KHROMOVA I., KITIASHVILLI I., KOZLOWSKI S., LASKSO T., LACZKOWSKI T., LYTVINENKO D., MILONI O., MORISHIMA R., MORO-MARTIN A., PAKSYUTOV V., PAL A., PATIDAR V., PECNIK B., PELES O., PYO J., QUINN T., ROGRIGUEZ A., ROMANO C., SAKIA E., STADEL J., THIEL M., TODOROVIC N., VERAS D., NIETO E., VILAGI J., Von BLOH W., ZECHNER R. & ZHOHKOVA E., 2004
     Stability of Terrestrial Planets in the Habitable Zone of Gl 777 A, HD 72659, Gl 614, 47 Uma and HD 4208.
     Astron. & Astrophys., 426, 353-
     paper
  2. BURROWS A., SUDARSKY D. & HUBENY I., 2004
     Spectra and Diagnostics for the Direct Detection of Wide-Separation Extrasolar Giant Planets.
     ApJ. , submitted
     preprint
  3. EGGENBERGER A., UDRY S. & MAYOR M., 2003
     Planets in binaries.
     in Scientific Frontiers in Research on Extrasolar Planets, ASP Conference Series. D.Deming and S.Seager, eds.
     paper
  4. NAEF D., MAYOR M., KORZENNIK S., QUELOZ D., UDRY S., NISENSON P., NOYES R., BROWN T., BEUZIT J.-L., PERRIER C. & SIVAN J.-P., 2003
     The ELODIE survey for northern extra-solar planets II: A Jovian planet on a long-period orbit around GJ 777A.
     Astron. & Astrophys., accepted
     preprint
  5. UDRY S., QUELOZ D. & MAYOR M., 2003
     Extrasolar planets: from individual detections to statistical propereties.
     in Scientific Frontiers in Research on Extrasolar Planets, ASP Conference Series. D.Deming and S.Seager, eds.
     paper
• Other Web pages:
  1. Geneva Observatory data
  2. California & Carnegie Planet Search Team Data

The star:

• Distance: 15.9 pc
• Spectral type: G6IV+
• Apparent magnitude: V = 5.71
• Metallicity: [Fe/H] = 0.14
• Mass (M_sun): M = 0.9
• Age (Gyr): 6.7
• Coordinates (2000):     RA = 20 03 37.4055       DEC = +29 53 48.500
• More data:
  • Basic Data (from simbad )
  • Most recent refs. (from ADS; enter ` Gl 777A ' in the `objects' field)