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.[4]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 21h 34m 42.768123s[2] |
| Declination | +01° 49′ 44.95678″[2] |
| Apparent magnitude (V) | 6.41[3] (6.23 - 6.47)[4] |
| Characteristics | |
| Spectral type | M4 III[5] |
| B−V color index | 1.398±0.015[3] |
| Variable type | irregular variable |
| Astrometry | |
| Radial velocity (Rv) | −20.48±0.26[3] km/s |
| Proper motion (μ) | RA: +13.153[2] mas/yr Dec.: −8.518[2] mas/yr |
| Parallax (π) | 3.4739 ± 0.2458 mas[2] |
| Distance | 940 ± 70 ly (290 ± 20 pc) |
| Absolute magnitude (MV) | −0.75[3] |
| Details[3] | |
| Radius | 44.4 R☉ |
| Luminosity | 390.92 L☉ |
| Temperature | 3303 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
References edit
- ^ "/ftp/cats/more/HIP/cdroms/cats". Centre de Données astronomiques de Strasbourg. Strasbourg astronomical Data Center. Retrieved 15 October 2022.
- ^ a b c d e 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.
- ^ a b c d e 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. S2CID 119257644.
- ^ a b Watson, Christopher (4 January 2010). "IZ Aquarii". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 13 July 2015.
- ^ 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.
- ^ "HD 205358". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 August 2018.
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