HD 3346

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HD 3346
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 00h 36m 46.441s[1]
Declination +44° 29′ 18.91″[1]
Apparent magnitude (V) 5.164
Characteristics
Spectral type K5III
U−B color index 1.97
B−V color index 1.6
Variable type SRs[2]
Astrometry
Radial velocity (Rv) -32.8 km/s
Proper motion (μ) RA: -36.31 ± 0.21[1] mas/yr
Dec.: 31.96 ± 0.18[1] mas/yr
Parallax (π) 5.29 ± 0.30[1] mas
Distance 620 ± 30 ly
(190 ± 10 pc)
Other designations
V428 Andromedae, HD 3346, SAO 36509, BD+43°113, HIP 2900, HR 152
Database references
SIMBAD data

HD 3346, also known as V428 Andromedae, is an orange giant star approximately 620 light-years away[1] in the constellation of Andromeda.

Possible planetary system[edit]

In 1996 it was announced that the variations in radial velocity of this star were larger than expected. A planetary system was proposed to explain this variation.[3][4]

The HD 3346 planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b (unconfirmed) 10 MJ 0.3 30.0 0
c (unconfirmed) 60 MJ 2.5 650 0.00

References[edit]

  1. ^ a b c d e f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S. 
  3. ^ Noyes, R.; et al. (1996). "HD 3346". International Astronomical Union Circular (6316): 1. 
  4. ^ Bell, George H. (2001-04-05). "The Search for the Extrasolar Planets: A Brief History of the Search, the Findings and the Future Implications". Arizona State University. Retrieved 2008-07-16. 

External links[edit]