XZ Andromedae

XZ Andromedae

The visual band light curve of XZ Andromedae is shown. The main plot shows the light curve over a full cycle, and the inset plot shows the primary minimum on an expanded scale. Adapted from Yang (2013)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 01h 56m 51.52427s[2]
Declination +42° 06′ 02.1813″[2]
Apparent magnitude (V) 9.91 – 12.45 variable [3]
Characteristics
Spectral type A4IV-V + G5IV[4]
Apparent magnitude (B) 10.16[5]
Apparent magnitude (V) 9.93[5]
Apparent magnitude (G) 9.9856[2]
Apparent magnitude (J) 9.373[6]
Apparent magnitude (H) 9.210[6]
Apparent magnitude (K) 9.188[6]
B−V color index 0.2125[5]
Variable type EA
Astrometry
Proper motion (μ) RA: 4.345±0.110 [2] mas/yr
Dec.: −11.814±0.116[2] mas/yr
Parallax (π)1.8406 ± 0.0788 mas[2]
Distance1,770 ± 80 ly
(540 ± 20 pc)
Orbit[4]
Period (P)1.357 days
Eccentricity (e)0
Inclination (i)89°
Periastron epoch (T)HJD 2449313.53084±0.00081
Details[4]
Primary
Mass3.2 M
Radius2.4 R
Temperature9,500 K
Secondary
Mass1.3 M
Radius2.6 R
Temperature5,500 K
Other designations
2MASS J01565151+4206021, BD+41 376, TYC 2824-1360-1
Database references
SIMBADdata

XZ Andromedae (also known as XZ And) is a binary star in the constellation Andromeda. Its maximum apparent visual magnitude is 9.91, but drops down to 12.45 every 1.357 days. Its variability matches the behaviour of Algol variable stars.[3]

  1. ^ Cite error: The named reference Yang was invoked but never defined (see the help page).
  2. ^ a b c d e f 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. Gaia DR2 record for this source at VizieR.
  3. ^ a b Cite error: The named reference GCVS was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Demircan1995 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference TYCHO was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference 2MASS Cat was invoked but never defined (see the help page).