HAT-P-5

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HAT-P-5[1][2]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Lyra
Right ascension 18h 17m 37.311s[3]
Declination +36° 37′ 17.12″[3]
Apparent magnitude (V) +11.95
Characteristics
Spectral type G
Variable type planetary transit
Astrometry
Proper motion (μ) RA: 14.0 ± 2.1[3] mas/yr
Dec.: 4.1 ± 0.8[3] mas/yr
Distance approx. 1,100 ly
(340 ± 30 pc)
Details
Mass 1.16 ± 0.062 M
Radius 1.167 ± 0.049 R
Surface gravity (log g) 4.37 ± 0.03[4] cgs
Temperature 5863 ± 80[4] K
Metallicity [Fe/H] 0.10 ± 0.10[4] dex
Rotational velocity (v sin i) 2.8 ± 1.0[4] km/s
Age 2.6 ± 1.8 Gyr
Other designations
GSC 02634-01087, 2MASS J18173731+3637170, TYC 2634-1087-1
Database references
SIMBAD data
Extrasolar Planets
Encyclopaedia
data

HAT-P-5 is a 12th magnitude star in the constellation Lyra, approximately 1,100 light years away from Earth. It is a spectral type G star, about 1.16 solar masses and radii greater than our Sun, and only 200 Kelvins hotter. It is estimated to be 2.6 billion years old.[1][2]

Planetary system[edit]

On October 9, 2007, a report was submitted to The Astrophysical Journal Letters telling of the discovery of an exoplanet transiting HAT-P-5. The planet was described as a Jupiter-like hot Jupiter, with a radius about one and one quarter times that of Jupiter, and nearly the same mass. Its density was reported as 0.66 ± 0.11 g/cm3, and its inclination 86.75 ± 0.44°.[5]

The HAT-P-5 planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b 1.06 ± 0.11 MJ 0.04075 ± 0.00076 2.788491 ± 2.5e-05 0

See also[edit]

References[edit]

  1. ^ a b "Notes for Planet HAT-P-5 b". Extrasolar Planets Encyclopaedia. Retrieved October 16, 2007. 
  2. ^ a b "Simbad Query Result". Simbad. Retrieved October 16, 2007. 
  3. ^ a b c d Zacharias, N. et al. (2013). "The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". The Astronomical Journal 145 (2). 44. arXiv:1212.6182. Bibcode:2013AJ....145...44Z. doi:10.1088/0004-6256/145/2/44. Vizier catalog entry
  4. ^ a b c d Torres, Guillermo et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal 757 (2). 161. arXiv:1208.1268. Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161. 
  5. ^ Bakos, G. Á. et al. (2007). "HAT-P-5b: A Jupiter-like Hot Jupiter Transiting a Bright Star". The Astrophysical Journal Letters 671 (2): L173–L176. arXiv:0710.1841. Bibcode:2007ApJ...671L.173B. doi:10.1086/525022. 

External links[edit]

Coordinates: Sky map 18h 17m 37.299s, +36° 37′ 16.88″