9 Aquarii

9 Aquarii (abbreviated 9 Aqr) is a yellow giant with a spectral type of G8III[3] and an apparent magnitude of 6.55[2] in the constellation Aquarius. 9 Aquarii is the Flamsteed designation.

9 Aquarii

Observation data Epoch J2000      Equinox J2000
Constellation	Aquarius
Right ascension	21^h 01^m 08.33321^s[1]
Declination	−13° 31′ 47.9702″[1]
Apparent magnitude (V)	6.55[2]
Characteristics
Spectral type	G6/8III[3]
Astrometry
Radial velocity (Rv)	22.8 ± 2[4] km/s
Proper motion (μ)	RA: -0.22[1] mas/yr Dec.: 5.41[1] mas/yr
Parallax (π)	4.69 ± 0.60[1] mas
Distance	approx. 700 ly (approx. 210 pc)
Other designations
BD−14° 5908, HD 200004, HIP 103728, SAO 164064[5]
Database references
SIMBAD	data

References

1. van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
2. Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
3. Houk, N.; Smith-Moore, M. (1988). "Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. Volume 4, Declinations -26°.0 to -12°.0". Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. 4. Bibcode:1988mcts.book.....H.
4. Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Carnegie Institute Washington D.C. Publication. Bibcode:1953GCRV..C......0W.
5. "* 9 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 28 January 2018.