64 Andromedae

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64 Andromedae
Andromeda constellation map.svg
Red circle.svg
Location of 64 Andromedae (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Andromeda
Right ascension 02h 24m 24.91594s [1]
Declination +50° 00′ 23.5619″ [1]
Apparent magnitude  (V)5.19 [2]
Characteristics
Spectral type G8III [2]
U−B color index 1.74 [2]
B−V color index 0.976 [3]
Astrometry
Radial velocity (Rv)–13.34 [1] km/s
Proper motion (μ)RA: +24.618±0.272 [1] mas/yr
Dec.: −36.335±0.262 [1] mas/yr
Parallax (π)7.7770±0.1296  mas [1]
Distance 419 ± 7  ly
(129 ± 2  pc)
Absolute magnitude  (MV)−0.25 [4]
Details
Mass 3.12±0.19 [5]   M☉
Radius 15.90±0.56 [5]   R☉
Luminosity 135.6±8.8 [5]   L☉
Surface gravity (log g)2.55±0.05 [5]   cgs
Temperature 4,944±33 [5]   K
Metallicity [Fe/H]−0.03±0.10 [5]   dex
Rotational velocity (v sin i)0.69 [3]  km/s
Age 350±60 [5]   Myr
Other designations
64 And, BD+49°649, HD 14770, HIP 11220, HR 694, SAO 38005, PPM 27578 [2]
Database references
SIMBAD data

64 Andromedae, abbreviated 64 And, is a single [6] star in the northern constellation of Andromeda. With a spectral type G8III, it is a deep-yellow coloured G-type giant approximately 419 light years from Earth with an apparent magnitude of 5.19. [1] The star is moving closer to the Earth with a heliocentric radial velocity of –13 km/s. [1]

This star is estimated to be 350 [5]  million years old with a negligible rotation rate, showing a projected rotational velocity of 0.69 km/s. [3] It has a little more than 3 [5] times the mass of the Sun and has expanded to 16 [5] times the Sun's radius. 64 And is radiating 136 [5] times the luminosity of the Sun from its enlarger photosphere at an effective temperature of 4,944  [5]

Position and chosen constellation

As to the faint triangle and context in which the star figures see 63 Andromedae.

References

  1. 1 2 3 4 5 6 7 8 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 .
  2. 1 2 3 4 "64 And". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved October 5, 2018.
  3. 1 2 3 Hekker, S.; Meléndez, J. (December 2007), "Precise radial velocities of giant stars. III. Spectroscopic stellar parameters", Astronomy & Astrophysics, 475 (3): 1003–1009, arXiv: 0709.1145 , Bibcode:2007A&A...475.1003H, doi:10.1051/0004-6361:20078233, S2CID   10436552.
  4. ↑ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971 , Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID   119257644.
  5. 1 2 3 4 5 6 7 8 9 10 11 12 Reffert, S.; Bergmann, C.; Quirrenbach, A.; Trifonov, T.; Künstler, A. (2016), "Precise radial velocities of giant stars. VII. Occurrence rate of giant extrasolar planets as a function of mass and metallicity", Astronomy & Astrophysics, 574: 13, arXiv: 1608.00963 , Bibcode:2015A&A...574A.116R, doi:10.1051/0004-6361/201322360, hdl:10722/215277, S2CID   59334290, A116.
  6. ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society , 389 (2): 869–879, arXiv: 0806.2878 , Bibcode:2008MNRAS.389..869E, doi: 10.1111/j.1365-2966.2008.13596.x , S2CID   14878976.
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