Psi Andromedae

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ψ Andromedae
Observation data
Epoch J2000
Constellation
(pronunciation)
Andromeda
Right ascension 23h 46m 02.0466s
Declination +46° 25′ 12.993″
Apparent magnitude (V) 4.982
Characteristics
Spectral type G5Ib+
U-B color index 0.81
B-V color index 1.11
Astrometry
Radial velocity (Rv) -24.8 km/s
Proper motion (μ) RA: 9.05 mas/yr
Dec.: -6.25 mas/yr
Parallax (π) 2.49 ± 0.92 mas
Distance approx. 1300 ly
(approx. 400 pc)
Absolute magnitude (MV) 6.067
Details
Mass ? M
Radius ? R
Luminosity ? L
Temperature ? K
Metallicity ?
Rotation ?
Age ? years
Visual binary orbit
Companion ψ Andromedae a
Semimajor axis (a) 0.3"
Inclination (i) 102°
Visual binary orbit
Companion ψ Andromedae b
Semimajor axis (a) 0.1"
Inclination (i) 172°
Visual binary orbit
Companion ψ Andromedae B
Semimajor axis (a) 24.8"
Inclination (i) 218°
Visual binary orbit
Companion ψ Andromedae C
Semimajor axis (a) 62"
Inclination (i) 17°
Visual binary orbit
Companion ψ Andromedae D
Semimajor axis (a) 184"
Inclination (i) 152°
Other designations
20 Andromedae, HR 9003,
HD 223047, BD+45°4321,
FK5 1622, HIP 117221,
SAO 53355, GC 32988,
CCDM 23461+4624.
Database references
SIMBAD data
Database references
SIMBAD data

Psi Andromedae (ψ And / ψ Andromedae) is a star system in the constellation Andromeda. It is approximately 1310 light years from Earth.

The primary component, ψ Andromedae A, is a spectroscopic binary with a yellow G-type supergiant and a white A-type main sequence dwarf. It has an apparent magnitude of +4.97. It has three more distant companions, the 15th magnitude ψ Andromedae B at 25 arcseconds, the 13th magnitude ψ Andromedae C at 62 arcseconds and the 9th magnitude ψ Andromedae D at 184 arcseconds.

Andromeda Constellation
Andromeda Constellation

[edit] Components

NAME Right ascension Declination Apparent magnitude (V) Spectral type Database references
ψ Andromedae B (BD+45 4321B) 23h 46m 00.4s +46° 24' 53 14.6 Simbad
ψ Andromedae C (BD+45 4321C) 23h 46m 6s +46° 27' 00 13.1 Simbad
ψ Andromedae D (BD+45 4322) 23h 46m 10.614s +46° 22' 28.85 9.32 K0 Simbad

[edit] Reference

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