HD 4208

HD 4208
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sculptor
Right ascension 00h 44m 26.65s[1]
Declination –26° 30′ 56.4″[1]
Apparent magnitude (V) 7.79
Characteristics
Spectral type G5V
Astrometry
Proper motion (μ) RA: 314.70 ± 0.63[1] mas/yr
Dec.: 150.27 ± 0.59[1] mas/yr
Parallax (π)30.89 ± 0.75[1] mas
Distance106 ± 3 ly
(32.4 ± 0.8 pc)
Details
Mass0.86 ± 0.02[2] M☉
Radius0.86 ± 0.01[2] R☉
Luminosity0.71 ± 0.004[2] L☉
Surface gravity (log g)4.5 ± 0.03[2] cgs
Temperature5717 ± 33[2] K
Age6.6 ± 2.1[2] Gyr
Other designations
BD-27°223, GJ 9024, HIP 3479, LTT 410, SAO 166526
Database references
SIMBADdata
ARICNSdata
Extrasolar Planets
Encyclopaedia		data

HD 4208 is an 8th magnitude star located approximately 106 light years away[1] in the constellation of Sculptor. Its spectral type is G5V. It is a yellow dwarf similar to our Sun, only slightly cooler and dimmer. It is not visible to the unaided eye, but with binoculars or small telescope it should be an easy target.

In 2001, a planet was discovered orbiting the star.[3]

The HD 4208 planetary system[4]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b >0.804 ± 0.073 MJ 1.650 ± 0.096 828.0 ± 8.1 0.052 ± 0.040 — —

See also

References

  1. 1 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752 Freely accessible. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. 1 2 3 4 5 6 Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. Bibcode:2015A&A...575A..18B. arXiv:1411.4302 Freely accessible. doi:10.1051/0004-6361/201424951.
  3. ↑ Vogt, Steven S.; et al. (2002). "Ten Low-Mass Companions from the Keck Precision Velocity Survey". The Astrophysical Journal. 568 (1): 352–362. Bibcode:2002ApJ...568..352V. arXiv:astro-ph/0110378 Freely accessible. doi:10.1086/338768.
  4. ↑ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. Bibcode:2006ApJ...646..505B. arXiv:astro-ph/0607493 Freely accessible. doi:10.1086/504701.

Coordinates: 00h 44m 26.65s, −26° 30′ 56.45″


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