Notes for HD 92788

by Jean Schneider

update: 24 September 2002

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The planet(s):

• Detection method: Radial Velocity
• Basic data:

  Name:	HD 92788 b
  M.sini:	3.86 MJ (Fischer et al) 3.81 MJ (Udry et al)
  Semi-major axis:	0.97 AU (Fischer et al) 0.94 AU (Udry et al)
  Orbital period:	377.7 d. (Fischer et al) 340 ± 5 d. (Udry et al)
  Eccentricity:	0.27 (Fischer et al) 0.34 ± 0.07(Udry et al.)
  Omega (deg):	286
  T_peri (JD-2450000):	126.36
  Inclinaison:	-

• Remarks:
  
  22 Nov. 00: From astrometry Han et al (2000) claim a preliminary mass of 54 M_J and inclination of 176.0^o
  24 July: The Geneva group finds different parameters for HD 92788 b (to be announced at the IAU General Assembly).
  31 July: Fischer et al. revise the planet b parameters after new RV data.
• References:
  1. FISCHER D., MARCY G., BUTLER P., VOGT S., FRINK S. & APPS K., 2000
     Planetary Companions to HD 12661, HD 92788, HD 38529 and Variations in Keplerian Residuals of Extrasolar Planets.
     ApJ, 551, 1107
     paper
  2. HAN I., BLACK D. & GATEWOOD G., 2000
     Preliminary astrometric masses for proposed exrasolar planetary companions.
     ApJ. Letters, accepted
     paper
  3. UDRY S., MAYOR M. & QUELOZ D., 2000b
     CORALIE-ELODIE new planets and planetary systems. Looking for fossil traces of formation and evolution.
     in Planetary Systems in the Universe: Observation, Formation and Evolution , IAU Symp. 202, Eds. A. Penny, P. Artymowicz, A.-M. Lagrange and S. Russel ASP Conf. Ser.
     paper
  4. ZHAO G., CHEN Y., QIU H. & LI. Z., 2002
     Chemical Abundances of 15 Extrasolar-Planet Host Stars.
     Astron. J., 124, 2224
     paper
• Other Web pages:
  1. Velocity curve and data (Fischer et al.)
  2. Geneva Observatory RV curve and data

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The star:

• Distance: 32.82 pc
• Spectral type: G5
• Apparent magnitude: V = 7.31
• Coordinates (2000):     RA = 10 42 48.5287 DEC = -02 11 01.521      
• Metallicity: [Fe/H]= 0.24
• Mass (M_sun): M= 1.06
• More data:
  • Basic Data (from simbad )
  • Most recent refs. (from ADS; enter ` HD 92788 ' in the `objects' field)

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