HR 5553

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HR 5553

A visual band light curve for DE Boötes, adapted from Henry et al. (1995)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 53m 23.76674s[2]
Declination +19° 09′ 10.0813″[2]
Apparent magnitude (V) 6.00[3] (5.97 to 6.04)[4]
Characteristics
Spectral type K0 V[5]
U−B color index +0.49[5]
B−V color index +0.84[5]
Variable type RS CVn[4]
Distance
37.5 ± 0.2 ly
(11.51 ± 0.06 pc)
Absolute magnitude (MV)5.69[7]
Argument of periastron
(ω)
(secondary)		219±0.1°
Details
HR 5553 A
Gyr
HR 5553 B
Mass0.45[5] M☉
LHS 5279[12]
Database references
SIMBADdata

HR 5553 is a

apparent visual magnitude from 5.97 down to 6.04,[4] which is bright enough to be dimly visible to the naked eye. The system is drifting closer to the Sun with a radial velocity of −30 km/s,[6] and is expected to come as close as 26.9 light-years in 210,000 years.[13]

Orbital elements for this single-lined

spectroscopic binary was first calculated in 1981 using radial velocity measurements from David Dunlap Observatory combined with older measurements from Mount Wilson Observatory and Dominion Astrophysical Observatory.[14] The two stars orbit each other with a period of 125 days and a large eccentricity of 0.51.[5]

The primary, designated component A, is a

luminosity of the Sun from its photosphere at an effective temperature of 5,313 K.[10] Component B has an estimated 45% of the mass of the Sun.[5]

An

AU. The temperature of this dust is 40 K.[10] The estimated mass of the dust is 0.0002 times the mass of the Earth. It is aligned to within 10° of the plane of the binary system.[9][8]

References

  1. doi:10.1086/117740
    . Retrieved 5 November 2021.
  2. ^
    S2CID 18759600
    .
  3. Bibcode:1986EgUBV........0M
    .
  4. ^
    S2CID 125853869
    .
  5. ^
    S2CID 53686506
    .
  6. ^
    S2CID 15290475
    .
  7. S2CID 118577511
    .
  8. ^
    doi:10.1093/mnrasl/slu190
    .
  9. ^
    S2CID 119232172
    , A114.
  10. ^
    S2CID 377244
    .
  11. ^
    S2CID 27151456
    .
  12. ^ "DE Boo". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-12-07.
  13. S2CID 56269929
    .
  14. Bibcode:1981JRASC..75...56K
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=HR_5553&oldid=1141232548"