Notes for HR 810

alias iota Hor, HD 17051
by Jean Schneider

update: 11 September 2001

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The planet(s):

• Detection method: Radial Velocity at ESO-CAT
• Basic data:

  Name:	HR 810 b
  M.sini:	2.25 ± 0.18 MJ
  Semi-major axis:	0.925 ± 0.104 AU
  Orbital period:	320.1 ± 2.1 d.
  Eccentricity:	0.161 ± 0.069
  Omega (deg):	316
  T_peri (JD-2450000):	-388.00
  Inclinaison:	-

• Remarks:
  11 Sep. 01: ESO retraction: no more dust disk around iota Hor (Aug. 01)
  22 Nov. 00: From astrometry Han et al (2000) claim a preliminary mass of 24 M_J and inclination of 5.5^o
  The systems has a dust disc (Adonis Team at ESO):
  - radius 65 AU
  - inclination 42°
• References:
  1. GIMENEZ A., 2000
     ubvy Photometry of stars with planets.
     Astron. & Astrophys., 356, 213.
     paper
  2. HAN I., BLACK D. & GATEWOOD G., 2000
     Preliminary astrometric masses for proposed exrasolar planetary companions.
     ApJ. Letters, 548, 57
     paper
  3. KÜRSTER M., HATZES A., COCHRAN W., DENNEL K., DOBEREINER S. ENDL, M. & VANNIER M., 1998b
     The ESO radial velocity planet search program.
     in Proceeding Workshop Science with Gemin 7-10 December 1997, Florianopolis, Brazil, B. Barbuy (ed.), in press
     preprint
  4. KURSTER M., HATZES A., COCHRAN W., DENNERL K., DOBEREINER S. & ENDL, M. 1998
     The ESO precision RV survey for extra-solar planets: Results from the first five years
     in Proceedings of IAU Colloquium 170, Precise stellar radial velocities (J.B.Hearnshaw & C.D.Scarfe Eds.), ASP Conf. Series (1999) in press
     abstract
  5. KURSTER M., ENDL M., ELS S., HATZES A., COCHRAN W., DOBEREINER S. & DENNERL K., 2000
     An extrasolar giant planet in an Earth-like orbit. Precise radial velocities of the young star iota Horologii = HR 810. Astron. & Astrophys., 353, L33
     paper (pdf)
  6. PANTIN E., ELS S., MARCHIS F., ENDL M., KUERSTER M. & STEZIK M., 2000
     First Detection of a Dust Disk around Iota Horologii, a Southern Star Orbited by an Extrasolar Giant Planet.
     BAAS, 32, p. 64.33
     abstract
  7. RYAN S, 2000
     The Host Stars of Extrasolar Planets Have Normal Lithium Abundances.
     MNRAS, in press preprint
• Other Web pages:
  1. ESO Press Release
  2. Planet parameters (M. Endl)
  3. Press release about the discovery of the disc.
  4. Heidelberg webpage on the disc.
  5. California and Carnegie Planet data

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The star:

• Distance: ~ 15.5 pc
• Spectral type: G0V pecul.
• Apparent magnitude: V = 5.4
• Coordinates (2000):     RA = 02 42 31.65       DEC = -50 48 12.3
• Metallicity: [Fe/H]_sp = 0.25
• Mass (M_sun): M = -
• More data:
  • Basic Data (from simbad )
  • Most recent refs. (from ADS; enter ` HR 810 ' in the `objects' field)

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