HD 23079

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HD 23079
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Reticulum
Right ascension 03h 39m 43.096s[1]
Declination −52° 54′ 57.02″[1]
Apparent magnitude (V) 7.1
Characteristics
Spectral type F8/G0V
Astrometry
Proper motion (μ) RA: -192.57 ± 0.37[1] mas/yr
Dec.: -92.82 ± 0.42[1] mas/yr
Parallax (π) 29.51 ± 0.34[1] mas
Distance 111 ± 1 ly
(33.9 ± 0.4 pc)
Details
Other designations
CD-53º738, HIP 17096, SAO 233208

HD 23079 is a star approximately 114 light years away in the constellation Reticulum. Since the star is magnitude 7.1, it is not visible to the naked eye, but at least in binoculars, it should be easily visible. The spectral type is F8 or G0, it is a main-sequence (hydrogen-fusing) star. The star is larger and more massive than our Sun. As it is typical for planet-harboring stars, it is a population I star, with metallicity of –0.24 dex (58% solar). The age of the star is 6.53 billion years old, older than Sun’s 4.57 billion years.

Planetary system[edit]

In October 2001, a giant planet orbiting the star was announced.[2]

The HD 23079 system[3]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >2.45 ± 0.21 MJ 1.596 ± 0.093 730.6 ± 5.7 0.102 ± 0.031

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ Tinney, C. G. et al. (2002). "Two Extrasolar Planets from the Anglo-Australian Planet Search". The Astrophysical Journal 571 (1): 528–531. arXiv:astro-ph/0111255. Bibcode:2002ApJ...571..528T. doi:10.1086/339916. 
  3. ^ Butler, R. P. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. 

External links[edit]

Coordinates: Sky map 03h 39m 43.0952s, −52° 54′ 57.017″