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θ Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 00h 17m 05.4983s
Declination +38° 40′ 53.888″
Apparent magnitude (V) 4.619
Characteristics
Spectral type A2V
U-B color index 0.04
B-V color index 0.06
Variable type variable Star
Astrometry
Radial velocity (Rv) 0.9 km/s
Proper motion (μ) RA: 50.01 mas/yr
Dec.: -17.90 mas/yr
Parallax (π) 12.88 ± 1.31 mas
Distance approx. 250 ly
(approx. 78 pc)
Absolute magnitude (MV) 4.679
Orbit
Companion θ Andromedae B
Semimajor axis (a) 0.1"
Inclination (i) 144°
Other designations
24 Andromedae, HR 63,
HD 1280, BD+37°34,
HIP 1366, SAO 53777,
GC 334, CCDM 00171+3841.
Database references
SIMBAD data

Theta Andromedae (θ And / θ Andromedae) is a binary star in the constellation Andromeda. It is approximately 253 light years from Earth.

The primary component, Theta Andromedae A, is a white A-type main sequence dwarf with an apparent magnitude of +4.61. The companion, Theta Andromedae B is separated from the primary by 0.1 arcseconds.

Location

This star's location in the constellation Andromeda can be seen in the following diagram:

Diagram of Andromeda constellation

References


θ Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 00h 17m 05.4983s
Declination +38° 40′ 53.888″
Apparent magnitude (V)4.619
Characteristics
Spectral typeA2V
U−B color index0.04
B−V color index0.06
Variable typevariable Star
Astrometry
Radial velocity (Rv)0.9 km/s
Proper motion (μ) RA: 50.01 mas/yr
Dec.: -17.90 mas/yr
Parallax (π)12.88 ± 1.31 mas
Distanceapprox. 250 ly
(approx. 78 pc)
Absolute magnitude (MV)4.679
Orbit
Companionθ Andromedae B
Semimajor axis (a)0.1"
Inclination (i)144°
Other designations
24 Andromedae, HR 63,
HD 1280, BD+37°34,
HIP 1366, SAO 53777,
GC 334, CCDM 00171+3841.
Database references
SIMBADdata

Theta Andromedae (θ And, θ Andromedae) is a binary star in the constellation Andromeda. It is approximately 253 light years from Earth.

The primary component, Theta Andromedae A, is a white A-type main sequence dwarf with an apparent magnitude of +4.61. The companion, Theta Andromedae B is separated from the primary by 0.1 arcseconds.

References








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