Notes for HD 154857

update: 23 October 2004

The planet(s):

• Detection method: Radial Velocity
• Basic data:

  Name:	HD 154857 b
  M.sini:	1.80 ± 0.27MJ
  Semi-major axis:	1.11 ± 0.02AU
  Orbital period:	398.5 ± 9
  Eccentricity:	0.51 ± 0.06
  Omega (deg):	50 ± 11
  T_peri (HJD):	2451963 ± 10
  Inclination:	-

• Remarks:
  15 sep. : A linear trend in the RV curve indicates a possible outer planet
• References:
  1. McCARTHY C., BUTLER P., TINNEY C., JONES H., MARCY G., CARTER B., PENNY A. & FISCHER D., 2004
     Multiple Companions to HD 154857 and HD 160691
     ApJ, accepted
     preprint
• Other Web pages:
  1. Anglo-Australian Planet Search data
  2. California & Carnegie Planet Search Team Data

The star:

• Distance: 68.5 pc
• Spectral type: G5V
• Apparent magnitude: V = 7.25
• Metallicity: [Fe/H] = -0.23 ± 0.03
• Mass (M_sun): M = 1.17 ± 0.05
• Coordinates (2000):     RA = 17 11 15.7219       DEC = -56 40 50.865
• More data:
  • Basic Data (from simbad )
  • Most recent refs. (from ADS; enter ` HD 154857 ' in the `objects' field)