88 Aquarii

In this article, we will explore the impact of 88 Aquarii in different contexts and situations. From its influence in the technological field to its effects on contemporary society, 88 Aquarii has proven to be a topic of great relevance and significance. Throughout history, 88 Aquarii has played a crucial role in shaping the world we live in, and its importance continues to be the subject of debate and reflection in various fields of knowledge. Through a detailed and comprehensive analysis, we will examine the many facets of 88 Aquarii and its impact on the present and future.

This article is about c2 Aquarii. For other star systems with this Bayer designation, see c Aquarii.
88 Aquarii
Diagram showing star positions and boundaries of the Aquarius constellation and its surroundings
Location of 88 Aquarii (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aquarius
Right ascension 23h 09m 26.79681s[1]
Declination –21° 10′ 20.6812″[1]
Apparent magnitude (V) +3.679[2]
Characteristics
Spectral type K1 III[3]
U−B color index +1.239[2]
B−V color index +1.215[2]
Astrometry
Radial velocity (Rv)+21.1[4] km/s
Proper motion (μ) RA: +55.40[1] mas/yr
Dec.: +30.49[1] mas/yr
Parallax (π)12.05±0.22 mas[1]
Distance271 ± 5 ly
(83 ± 2 pc)
Details
Radius29[5] R☉
Surface gravity (log g)2.34[6] cgs
Temperature4,430[6] K
Metallicity –0.24[6] dex
Other designations
BD-21°6368, FK5 873, HD 218594, HIP 114341, HR 8812, SAO 191683.[7]
Database references
SIMBADdata

88 Aquarii (abbreviated 88 Aqr), also named Safina,[8] is a star in the equatorial constellation of Aquarius. 88 Aquarii is the Flamsteed designation, though it also bears the Bayer designation c2 Aquarii. In dark conditions it is visible to the naked eye with an apparent visual magnitude of +3.68.[2] Based upon parallax measurements, this star is at a distance of around 271 light-years (83 parsecs) from Earth.[1]

The spectrum of 88 Aquarii matches an evolved giant star with a classification of K1 III.[3] Its measured angular diameter is 3.24 ± 0.20 mas,[9] which, at the estimated distance,[1] yields a physical size of about 29 times the radius of the Sun.[5] The cool, orange hued glow of this star comes from the outer atmosphere's effective temperature of 4,430 K.[6]

This star was a member of the Indigenous Arabic constellation Safina, the Ship, between Diphda and Fomalhaut. The IAU Working Group on Star Names approved the name Safina for this star on 12 December 2024 and it is now so entered in the IAU Catalog of Star Names.[8]

References

  1. ^ a b c d e f g van Leeuwen, F. (November 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, S2CID 18759600.
  2. ^ a b c d Gutierrez-Moreno, Adelina; et al. (1966), "A System of photometric standards", Publications of the Department of Astronomy University of Chile, 1, Publicaciones Universidad de Chile, Department de Astronomy: 1–17, Bibcode:1966PDAUC...1....1G.
  3. ^ a b Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H.
  4. ^ Wielen, R.; et al. (1999), "Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions", Veroeffentlichungen des Astronomischen Rechen-Instituts Heidelberg, 35 (35), Astronomisches Rechen-Institut Heidelberg: 1, Bibcode:1999VeARI..35....1W.
  5. ^ a b Lang, Kenneth R. (2006), Astrophysical formulae, Astronomy and astrophysics library, vol. 1 (3rd ed.), Birkhäuser, ISBN 3-540-29692-1. The radius (R*) is given by:
  6. ^ a b c d McWilliam, Andrew (December 1990), "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances", Astrophysical Journal Supplement Series, 74: 1075–1128, Bibcode:1990ApJS...74.1075M, doi:10.1086/191527.
  7. ^ "* 88 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-07-13.
  8. ^ a b "IAU Catalog of Star Names". Retrieved 22 February 2025.
  9. ^ Richichi, A.; Percheron, I.; Khristoforova, M. (February 2005), "CHARM2: An updated Catalog of High Angular Resolution Measurements", Astronomy and Astrophysics, 431 (2): 773–777, Bibcode:2005A&A...431..773R, doi:10.1051/0004-6361:20042039