HD 132029

HD 132029
Observation data; Epoch J2000 Equinox ICRS
Constellation	Boötes
	A
Right ascension	14h 55m 58.59235s
Declination	+32° 18′ 00.2240″
Apparent magnitude (V)	6.12
	B
Right ascension	14h 55m 58.94470s
Declination	+32° 17′ 58.4915″
Apparent magnitude (V)	10.35
Characteristics
Spectral type	A2V
U−B color index	+0.07
B−V color index	+0.087
Astrometry
Radial velocity (Rv)	−12.1 km/s
Absolute magnitude (MV)	+1.22
A
Proper motion (μ)	RA: −54.033 mas/yr ; Dec.: −3.128 mas/yr
Parallax (π)	9.4783±0.0524 mas
Distance	344 ± 2 ly ; (105.5 ± 0.6 pc)
B
Proper motion (μ)	RA: −54.327 mas/yr ; Dec.: −1.841 mas/yr
Parallax (π)	9.5813±0.0172 mas
Distance	340.4 ± 0.6 ly ; (104.4 ± 0.2 pc)
Details
A
Mass	2.4 M☉
Radius	2.5 R☉
Luminosity	44 L☉
Surface gravity (log g)	4.02 cgs
Temperature	9.434 K
Rotational velocity (v sin i)	64 km/s
Age	440 Myr
B
Mass	0.81 M☉
Radius	0.82 R☉
Luminosity	0.41 L☉
Surface gravity (log g)	4.46 cgs
Temperature	5,099 K
Age	11.9 Gyr
Other designations
	BD+32°2531, HD 132029, HIP 73068, HR 5569, SAO 64408
Database references
SIMBAD	data
	B

HD 132029 is a double star in the northern constellation of Boötes. The two stars share a common proper motion and lie about 340 light years away.

ConstellationBoötes^[1]

Right ascension14^h 55^m 58.59235^s^[2]

Declination+32° 18′ 00.2240″^[2]

Apparentmagnitude(V)6.12^[3]

Quick facts Constellation, Right ascension ...

Close

The primary star is an A-type main-sequence star with a spectral class of A2V and an apparent magnitude of 6.1, just visible to the naked eye om ideal conditions. The 10th-magnitude companion lies at an angular separation of 4.6″ along a position angle of 110° (as of 2010).^[9]

The A-type star is over twice as massive as the Sun and over 40 times as luminous. It has an effective temperature of 9,434 K.^[2] The fainter secondary has only 80% of the Sun's mass and 40% of its luminosity and its photosphere is at a temperature of 5,099 K.^[4]

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

Observation data Epoch J2000 Equinox ICRS
Constellation	Boötes^[1]
A
Right ascension	14^h 55^m 58.59235^s^[2]
Declination	+32° 18′ 00.2240″^[2]
Apparent magnitude (V)	6.12^[3]
B
Right ascension	14^h 55^m 58.94470^s^[4]
Declination	+32° 17′ 58.4915″^[4]
Apparent magnitude (V)	10.35^[3]
Characteristics
Spectral type	A2V^[5]
U−B color index	+0.07^[6]
B−V color index	+0.087^[5]
Astrometry
Radial velocity (R_v)	−12.1^[7] km/s
Absolute magnitude (M_V)	+1.22^[1]
A
Proper motion (μ)	RA: −54.033^[2] mas/yr Dec.: −3.128^[2] mas/yr
Parallax (π)	9.4783±0.0524 mas^[2]
Distance	344 ± 2 ly (105.5 ± 0.6 pc)
B
Proper motion (μ)	RA: −54.327^[4] mas/yr Dec.: −1.841^[4] mas/yr
Parallax (π)	9.5813±0.0172 mas^[4]
Distance	340.4 ± 0.6 ly (104.4 ± 0.2 pc)
Details
A
Mass	2.4^[2] `M`_☉
Radius	2.5^[2] R_☉
Luminosity	44^[2] `L`_☉
Surface gravity (log g)	4.02^[2] cgs
Temperature	9.434^[2] K
Rotational velocity (v sin i)	64^[5] km/s
Age	440^[2] Myr
B
Mass	0.81^[4] `M`_☉
Radius	0.82^[4] R_☉
Luminosity	0.41^[4] `L`_☉
Surface gravity (log g)	4.46^[4] cgs
Temperature	5,099^[4] K
Age	11.9^[4] Gyr
Other designations
BD+32°2531, HD 132029, HIP 73068, HR 5569, SAO 64408^[8]
Database references
SIMBAD	data
	B

HD 132029

References

External links

Related Articles

Timelines

Top Qs

Fact Checks