Iota Phoenicis

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ι Phoenicis
Phoenix constellation map.svg
Red circle.svg

Location of ι Phoenicis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Phoenix
Right ascension 23h 35m 04.56417s[1]
Declination −42° 36′ 54.2709″[1]
Apparent magnitude (V) 4.71[2] (4.70 - 4.75)[3]
Spectral type A2VpSrCrEu[3]
U−B color index +0.07[2]
B−V color index +0.08[2]
Variable type ACV[3]
Radial velocity (Rv) +19.40[4] km/s
Proper motion (μ) RA: +42.31[1] mas/yr
Dec.: +10.67[1] mas/yr
Parallax (π) 13.11 ± 0.53[1] mas
Distance 250 ± 10 ly
(76 ± 3 pc)
Absolute magnitude (MV) 0.28[5]
Mass 2.23[6] M
Luminosity 67.41[5] L
Surface gravity (log g) 3.89[6] cgs
Temperature 8,911[6] K
Metallicity [Fe/H] -0.01[7] dex
Rotational velocity (v sin i) 23[6] km/s
Other designations
CCDM J23351-4237A, FK5 1617, GC 32787, HIP 116389, HR 8949, HD 221760, SAO 231675, WDS J23351-4237A
Database references

Iota Phoenicis (ι Phe) is a class A2V[3] (white main-sequence) star in the constellation Phoenix. An Alpha² Canum Venaticorum variable, its apparent magnitude varies from 4.70 to 4.75 of a period of about 12.5 days[3] and it is approximately 249 light years away based on parallax.[1]

It also has one companion, at a separation of 6.7" and a magnitude about 12.8.[8]


  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D. 
  3. ^ a b c d e Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....1.2025S.  Vizier catalog entry
  4. ^ Wilson, R. E. (1953). General Catalogue of Stellar Radial Velocities. Carnegie Institution of Washington. Bibcode:1953GCRV..C......0W. LCCN 54001336. 
  5. ^ a b 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.  Vizier catalog entry
  6. ^ a b c d David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154Freely accessible. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146.  Vizier catalog entry
  7. ^ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771. arXiv:1606.08814Freely accessible. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031.  Vizier catalog entry
  8. ^ Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv:0806.2878Freely accessible. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.  Vizier catalog entry