Notes for HD 74156

update: 1 October 2004

The planet(s):

• Detection method: Radial velocity
• Basic data:

  Name:	HD 74156 b	HD 74156 c
  M.sini:	1.86 ± 0.03 MJ	6.17 ± 0.23 MJ
  Semi-major axis:	0.294 AU	3.40 AU
  Orbital period:	51.643 ± 0.011 d.	2025.0 ± 11 d.
  Eccentricity:	0.636 ± 0.009	0.583 ± 0.039
  Omega (deg):	181.5 ± 1.4	242.4 ± 4.0
  T_peri (JD-2450000):	1981.321 ± 0.091	901 ± 10
  Inclination:	-

• Remarks:
  
• References:
  1. BARNES R. & QUINN Th., 2004
     The (In)Stability of Planetary Systems.
     ApJ., submitted
     preprint
  2. DVORAK R., PILAT-LOHINGER E., FUNK B. & FREISTETTER F., 2003
     A study of the stability regions in the planetary system HD 74156 - Can it host earthlike planets in habitable zones?
     Astron. & Astrophys., 410, L13
     paper
  3. NAGASAWA M., LIN D. & IDA S., 2003
     Eccentricity Evolution of Extrasolar Planetary Systems due to the Depletion of Nascent Protostellar Disks.
     ApJ., 586, 1374
     paper
  4. NAEF D., MAYOR M., BEUZIT J.-L., PERRIER C. QUELOZ D., UDRY S.,& SIVAN J.-P., 2004
     The ELODIE survey for northern extra-solar planets. III: Three planetary candidates detected with ELODIE.
     Astron. & Astrophys., 414, 35
     paper
  5. RAYMOND S. & BARNES R., 2004 Predicting Planets in Known Extra-Solar Planetary Systems III: Forming Terrestrial Planets.
     ApJ, submitted
     preprint
  6. RAYMOND S. & BARNES R., 2004a Predicting Planets in Known Extra-Solar Planetary Systems II: Testing for Saturn-Mass Planets.
     ApJ, accepted
     preprint
• Other Web pages:
  1. Geneva group velocity curve and data

The star:

• Distance: 64.56 pc
• Spectral type: G0
• Apparent magnitude: B = 8.16, V = 7.62
• Coordinates :      RA = 08 42 25.1222       DEC = +04 34 41.151
• Metallicity: [Fe/H]= 0.13
• Mass (M_sun): M= 1.05
• More data:
  • Basic Data (from simbad )
  • Most recent refs. (from ADS; enter ` HD 74156 ' in the `objects' field)