Z Andromedae

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Z Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 23h 33m 39.951s[1]
Declination +48° 49′ 05.96″[1]
Apparent magnitude (V) 10.53
Characteristics
Spectral type M6.5
B−V color index 1.1
Variable type symbiotic variable star
Astrometry
Radial velocity (Rv) 3 km/s
Proper motion (μ) RA: -6.23 ± 2.19[1] mas/yr
Dec.: -4.86 ± 2.15 [1] mas/yr
Parallax (π) 1.12 ± 3.26[1] mas
Distance approx. 3,000 ly
(approx. 1,000 pc)
Absolute magnitude (MV) 11.88
Details
Mass 0.6 M
Radius 0.5 R
Luminosity 0.04 L
Temperature 26000 K
Other designations
EM* MWC 416, HIP 116287, SAO 53146, AG+48° 2087, GCRV 14773, IRAS 23312+4832, HV 193, AN 41.1901, JP11 3636, TYC 3645-2066-1, BD+48° 4093, GSC 03645-02066, 2MASS J23333994+4849059, AAVSO 2328+48, 2E 2331.6+4834, HD 221650, PLX 5697, 2E 4735, PPM 64386.
Database references
SIMBAD data
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

Z Andromedae is a symbiotic variable star with an hourglass-shaped nebula (like the Homonculus Nebula or Supernova 1987A).[2] It is the prototype for symbiotic variables, which are a subset of cataclysmic variables.[3]

References[edit]

Additional reading[edit]

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