28 Andromedae

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28 Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 00h 30m 07.36s[1]
Declination +29° 45′ 05.6″[1]
Apparent magnitude (V) 5.214[2]
Characteristics
Spectral type A7 III[3]
U−B color index +0.08[4]
B−V color index +0.26[4]
Variable type δ Sct[5]
Astrometry
Radial velocity (Rv) −10.3 ± 0.6[6] km/s
Proper motion (μ) RA: 43.31 ± 0.48[1] mas/yr
Dec.: −56.66 ± 0.30[1] mas/yr
Parallax (π) 15.93 ± 0.43[1] mas
Distance 205 ± 6 ly
(63 ± 2 pc)
Details
Surface gravity (log g) 3.95 ± 0.06[7] cgs
Temperature 7335 ± 69[7] K
Metallicity [Fe/H] −0.09 ± 0.05[7] dex
Other designations
BD+28° 75, HD 2628, HIP 2355, HR 114, SAO 74041
Database references
SIMBAD data

28 Andromedae (abbreviated 28 And) is a star in the constellation Andromeda. 28 Andromedae is the Flamsteed designation. It is also known as GN Andromedae.[5] Its apparent magnitude is 5.214.[2]

28 Andromedae is an A-type giant star,[3] meaning it is colored bluish-white. Parallax estimates made by the Hipparcos spacecraft put the star at a distance of about 205 light years (63 parsecs).[1]

References[edit]

  1. ^ a b c d e f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ^ a b Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. 
  3. ^ a b Cowley, A.; Fraquelli, D. (1974). "MK Spectral Types for Some Bright F Stars". Publications of the Astronomical Society of the Pacific. 86 (509): 70. Bibcode:1974PASP...86...70C. doi:10.1086/129562. 
  4. ^ a b Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Bibcode:1986EgUBV........0M. 
  5. ^ a b "28 And". 
  6. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. Bibcode:2006AstL...32..759G. arXiv:1606.08053Freely accessible. doi:10.1134/S1063773706110065. 
  7. ^ a b c Prugniel, Ph. (1986). "The atmospheric parameters and spectral interpolator for the MILES stars". Astronomy & Astrophysics. 531. Bibcode:2011A&A...531A.165P. arXiv:1104.4952Freely accessible. doi:10.1051/0004-6361/201116769. 

External links[edit]