100 Aquarii

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100 Aquarii
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 23h 31m 42.0406s[1]
Declination −21° 22′ 09.983″[2]
Apparent magnitude (V) 6.24[3]
Spectral type F0 V[4]
B−V color index 0.319±0.008[3]
Radial velocity (Rv)−8.0±7.4[3] km/s
Proper motion (μ) RA: −2.066[2] mas/yr
Dec.: +0.150[2] mas/yr
Parallax (π)13.13 ± 0.46[2] mas
Distance248 ± 9 ly
(76 ± 3 pc)
Absolute magnitude (MV)1.83[3]
Mass1.83±0.03[5] M
[5] L
Temperature7,063±49[5] K
Rotational velocity (v sin i)123[5] km/s
Other designations
100 Aqr, BD−22° 6141, HD 221357, HIP 116118, HR 8932, SAO 191970[6]
Database references

100 Aquarii is a star in the zodiac constellation of Aquarius. The designation is from the star catalogue of English astronomer John Flamsteed, first published in 1712.


  1. ^ Gaia Collaboration; et al. (November 2016), "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties", Astronomy & Astrophysics, 595: 23, arXiv:1609.04172Freely accessible, Bibcode:2016A&A...595A...2G, doi:10.1051/0004-6361/201629512, A2. 
  2. ^ a b c d van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. 
  3. ^ a b c d Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971Freely accessible, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015. 
  4. ^ Houk, Nancy; Smith-Moore, M. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H. 
  5. ^ a b c d Zorec, J.; Royer, F. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics, 537: A120, arXiv:1201.2052Freely accessible, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691.  Propagation of uncertainty implemented via upper bound/lower bound method.
  6. ^ "100 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-02-06.