HD 30177

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HD 30177
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Dorado
Right ascension 04h 41m 54.373s[1]
Declination –58° 01′ 14.72″[1]
Apparent magnitude (V) 8.41
Characteristics
Spectral type G8V
Astrometry
Proper motion (μ) RA: 66.15 ± 0.74[1] mas/yr
Dec.: -11.45 ± 0.77[1] mas/yr
Parallax (π) 18.93 ± 0.63[1] mas
Distance 172 ± 6 ly
(53 ± 2 pc)
Absolute magnitude (MV) 4.72
Details
Other designations
CD–58°984, HIP 21850, SAO 233633

HD 30177 is an 8th magnitude star located approximately 178 light-years (55 parsecs) away in the constellation Dorado. The star is a yellow dwarf, a type of yellow star that fuses hydrogen in its core. Since if this star is a late G-type, it is cooler and less massive than the Sun, but larger in radius. It is 1.8 times older than our Sun. This star system contains a single extrasolar planet.[2]

Planetary system[edit]

The HD 30177 system[3]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >10.45 ± 0.88 MJ 3.95 ± 0.26 2770 ± 100 0.193 ±0.025

See also[edit]

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. (2003). "Four New Planets Orbiting Metal-enriched Stars". The Astrophysical Journal 587 (1): 423–428. arXiv:astro-ph/0207128. Bibcode:2003ApJ...587..423T. doi:10.1086/368068. 
  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 04h 41m 54.3731s, −58° 01′ 14.725″