HR 830

HR 830

Observation data Epoch J2000      Equinox J2000
Constellation	Aries
Right ascension	02^h 48^m 45.9043^s
Declination	+25° 11′ 17.029″
Apparent magnitude (V)	5.89
Characteristics
Spectral type	A0V[1]
U−B color index	-0.14[1]
B−V color index	-0.04[1]
Variable type	Alpha² CVn variable[2]
Astrometry
Radial velocity (Rv)	13.8[1] km/s
Proper motion (μ)	RA: 54.41 mas/yr Dec.: -3.69 mas/yr
Parallax (π)	8.21 ± 0.65[1] mas
Distance	400 ± 30 ly (122 ± 10 pc)
Other designations
VZ Arietis, SAO 75588, BD+24°396, HIP 13121, HR 830, HD 17471
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

HR 830, also known as VZ Arietis, is an Alpha² Canum Venaticorum variable star in the constellation Aries. Varying between magnitudes 5.82 and 5.89,^[2] the star can be easily seen with the naked eye in dark, unpolluted areas. Located approximately 122 parsecs (400 ly) distant and with a spectral type of A0V,^[1] the star is a blue-white star currently fusing hydrogen into helium in its core. The star was formerly known as 16 Trianguli, but as the star is no longer in the constellation Triangulum, this designation has fallen out of use.^[3]

References

1. "VZ Arietis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 15 June 2014.
2. VSX (4 January 2010). "VZ Arietis". AAVSO Website. American Association of Variable Star Observers. Retrieved 15 June 2014.
3. Wagman, M. (August 1987). "Flamsteed's Missing Stars". Journal for the History of Astronomy, Vol.18, NO. 3/AUG, P.209, 1987 18: 222. Bibcode:1987JHA....18..209W.