HR 5553

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HR 5553
Observation data
Epoch 2000      Equinox 2000
Constellation Boötes
Right ascension 14h 53m 23.8s
Declination +19° 09′ 10.1″
Apparent magnitude (V) 6.00
Characteristics
Spectral type K2 V/?
U−B color index 0.50
B−V color index 0.84
R−I color index 0.42
Astrometry
Radial velocity (Rv) -31.0 km/s
Proper motion (μ) RA: -442.75 mas/yr
Dec.: 216.84 mas/yr
Parallax (π) 86.68 ± 0.80 mas
Distance 37.6 ± 0.3 ly
(11.5 ± 0.1 pc)
Details
Surface gravity (log g) 4.57[1] cgs
Temperature 5,313[1] K
Metallicity [Fe/H] 0.10[1] dex
Rotational velocity (v sin i) 4.0[1] km/s
Age 0.7–1.3[2] Gyr
Other designations
DE Boötis, BD+19 2881, GJ 567, HD 131511, HIP 72848, LHS 5279, Nstars 1453+1909

HR 5553 is a binary star system located thirty-eight light-years away, in the constellation Boötes. The primary component is an orange, main sequence (K2 V) star.

An infrared excess has been detected around this star, most likely indicating the presence of a circumstellar disk at a radius of 34.2 AU. The temperature of this dust is 40 K.[1]

References[edit]

  1. ^ a b c d e Eiroa, C. et al. (July 2013). "DUst around NEarby Stars. The survey observational results". Astronomy & Astrophysics 555: A11. arXiv:1305.0155. Bibcode:2013A&A...555A..11E. doi:10.1051/0004-6361/201321050. 
  2. ^ Mamajek, Eric E.; Hillenbrand, Lynne A. (November 2008). "Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics". The Astrophysical Journal 687 (2): 1264–1293. arXiv:0807.1686. Bibcode:2008ApJ...687.1264M. doi:10.1086/591785. 

External links[edit]