Journal "Peremennye Zvezdy"

Notes for HR 810

alias iota Hor, HD 17051
by Jean Schneider

update: 11 September 2001

The planet(s):

Detection method: Radial Velocity at ESO-CAT

Basic data:

Name:	HR 810 b
M.sini:	2.25 ± 0.18 M_J
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

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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