IZ Aquarii

IZ Aquarii is a red giant star in the constellation Aquarius. It is a slow irregular variable that varies between magnitudes 6.23 and 6.47.[3]

IZ Aquarii

Observation data Epoch J2000      Equinox J2000
Constellation	Aquarius
Right ascension	21^h 34^m 42.768123^s[1]
Declination	+01° 49′ 44.95678″[1]
Apparent magnitude (V)	6.41[2] (6.23 - 6.47)[3]
Characteristics
Spectral type	M4 III[4]
B−V color index	1.398±0.015[2]
Astrometry
Radial velocity (Rv)	−20.48±0.26[2] km/s
Proper motion (μ)	RA: +13.153[1] mas/yr Dec.: −8.518[1] mas/yr
Parallax (π)	3.4739 ± 0.2458[1] mas
Distance	940 ± 70 ly (290 ± 20 pc)
Absolute magnitude (MV)	−0.75[2]
Details
Luminosity	390.92[2] L☉
Other designations
IZ Aqr, BD+01° 4503, FK5 5868, GC 30209, HD 205358, HIP 106544, SAO 126901, PPM 171943, TYC 542-105-1, GSC 00542-00105, IRAS 21321+0136, 2MASS J21344276+0149447[5]
Database references
SIMBAD	data

References

1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051.
2. Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.
3. Watson, Christopher (4 January 2010). "IZ Aquarii". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 13 July 2015.
4. Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 05: 0. Bibcode:1999MSS...C05....0H.
5. "HD 205358". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 August 2018.