Astronomy:8 Aquarii
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Short description: Star in the constellation Aquarius
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 20h 59m 54.826s[1] |
| Declination | −13° 03′ 05.87″[1] |
| Apparent magnitude (V) | 6.60[2] |
| Characteristics | |
| Spectral type | A3/4 IV[3] |
| B−V color index | 0.177±0.007[4] |
| Astrometry | |
| Proper motion (μ) | RA: −31.787[1] mas/yr Dec.: −6.566[1] mas/yr |
| Parallax (π) | 10.9478 ± 0.1472[1] mas |
| Distance | 298 ± 4 ly (91 ± 1 pc) |
| Absolute magnitude (MV) | 1.91[4] |
| Details | |
| Mass | 1.9[5] M☉ |
| Radius | 2.27[5] R☉ |
| Luminosity | 19[5] L☉ |
| Temperature | 8,008[5] K |
| Metallicity [Fe/H] | 0.11[6] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
8 Aquarii (abbreviated 8 Aqr) is a blue-white sub-giant of the spectral class A4IV in the constellation Aquarius. 8 Aquarii is the Flamsteed designation. It is approximately 298 light-years away from Earth, based on parallax.[1] It is approximately 1.7 solar masses and about 3 times hotter than the Sun and thus allows lines of ionized metals with an abundance of metals.[citation needed]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G. Gaia EDR3 record for this source at VizieR.
- ↑ Høg, E. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27–L30. Bibcode: 2000A&A...355L..27H.
- ↑ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey 5. Bibcode: 1999MSS...C05....0H.
- ↑ 4.0 4.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 5.0 5.1 5.2 5.3 Stassun, Keivan G. et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. ISSN 0004-6256. Bibcode: 2019AJ....158..138S.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedstarhorse2 - ↑ "* 8 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%2A+8+Aqr.
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