Star in the constellation Andromeda
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! style="text-align: center; background-color: #FFFFC0;" colspan="2" | Observation dataEpoch J2000      Equinox J2000
! style="text-align:left" | Constellation
! style="text-align:left" | Right ascension
! style="text-align:left" | Declination
! style="text-align:left" | Apparent magnitude (V)
! style="background-color: #FFFFC0; text-align: center;" colspan="2"| Characteristics
! style="text-align:left" | Spectral type
! style="text-align:left" | U−B 
! style="text-align:left" | B−V 
! style="text-align:left" | V−R 
! style="text-align:left" | R−I 
! style="text-align:left" | Variable type
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V529 Andromedae, also known as HD 8801, is a variable star in the constellation of Andromeda. It has a 13th magnitude visual companion star 15" away, which is just a distant star on the same line of sight.
It is also an Am star with a spectral classification Am(kA5/hF1/mF2), meaning that it has the calcium K line of a star with spectral type A5, the Balmer series of a F1 star, and metallic lines of an F2 star.
Variability.
Thr variable brightness of V529 Andromedae was first detected in the "Hipparcos" satellite data. It was classified as an "unsolved variable" (meaning it could not be placed into any specific variable star category) in the "Hipparcos" catalog released in 1997. The star's variability was confirmed in a study published by Gregory W. Henry and Francis C. Fekel in 2005, and the star was given its variable star designation in 2011.
V529 Andromedae was the first star known to combine Gamma Doradus and Delta Scuti type pulsations. Nine different pulsation frequencies have been observed, and three of them could arise from a previously unknown stellar pulsation mode.
Companion.
V529 Andromedae has a 13th magnitude companion about away. It is a far more distant star than V529 Andromedae, only coincidentally aligned in the sky.
References.
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