HD 219659

HD 219659
Observation data; Epoch J2000 Equinox ICRS
Constellation	Aquarius
Right ascension	23h 17m 40.08278s
Declination	−11° 42′ 46.5910″
Apparent magnitude (V)	6.33
Characteristics
Evolutionary stage	main sequence
Spectral type	A1/A2IV/V
U−B color index	+0.00
B−V color index	+0.05
Astrometry
Radial velocity (Rv)	2.2 km/s
Proper motion (μ)	RA: +40.58 mas/yr ; Dec.: +5.32 mas/yr
Parallax (π)	8.24±0.53 mas
Distance	400 ± 30 ly ; (121 ± 8 pc)
Absolute magnitude (MV)	+0.92
Details
Mass	2.5 M☉
Radius	3.0 R☉
Luminosity	72 L☉
Surface gravity (log g)	3.87 cgs
Temperature	9,661 K
Metallicity [Fe/H]	−0.01 dex
Rotational velocity (v sin i)	196 km/s
Age	462 Myr
Other designations
	BD−12°6461, HD 219659, HIP 115015, HR 8856, SAO 165609.
Database references
SIMBAD	data

HD 219659 is suspected variable star in the equatorial constellation of Aquarius.

Right ascension23^h 17^m 40.08278^s^[2]

Declination−11° 42′ 46.5910″^[2]

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Observation data Epoch J2000 Equinox ICRS
Constellation	Aquarius^[1]
Right ascension	23^h 17^m 40.08278^s^[2]
Declination	−11° 42′ 46.5910″^[2]
Apparent magnitude (V)	6.33^[3]
Characteristics
Evolutionary stage	main sequence^[4]
Spectral type	A1/A2IV/V^[5]
U−B color index	+0.00^[3]
B−V color index	+0.05^[3]
Astrometry
Radial velocity (R_v)	2.2^[6] km/s
Proper motion (μ)	RA: +40.58^[2] mas/yr Dec.: +5.32^[2] mas/yr
Parallax (π)	8.24±0.53 mas^[2]
Distance	400 ± 30 ly (121 ± 8 pc)
Absolute magnitude (M_V)	+0.92^[1]
Details
Mass	2.5^[7] `M`_☉
Radius	3.0^[7] R_☉
Luminosity	72^[7] `L`_☉
Surface gravity (log g)	3.87^[7] cgs
Temperature	9,661^[7] K
Metallicity [Fe/H]	−0.01^[8] dex
Rotational velocity (v sin i)	196^[4] km/s
Age	462^[8] Myr
Other designations
BD−12°6461, HD 219659, HIP 115015, HR 8856, SAO 165609.
Database references
SIMBAD	data

References