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Iota Persei

Iota Persei
Location of ι Persei (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 03h 09m 04.019s[1]
Declination +49° 36′ 47.802″[1]
Apparent magnitude (V) 4.062[2]
Characteristics
Evolutionary stage Main sequence
Spectral type G0V[3] or F9.5 V[4]
U−B color index +0.119[2]
B−V color index +0.595[2]
Astrometry
Radial velocity (Rv)49.47±0.12[1] km/s
Proper motion (μ) RA: +1,265.475 mas/yr[1]
Dec.: −91.50 mas/yr[1]
Parallax (π)94.5412 ± 0.1448 mas[1]
Distance34.50 ± 0.05 ly
(10.58 ± 0.02 pc)[1]
Absolute magnitude (MV)3.94[5]
Details[6]
Mass1.08 – 1.1 M☉
Radius1.417 R☉
Luminosity2.22 L☉
Surface gravity (log g)4.17 cgs
Temperature5,921 K
Metallicity [Fe/H]+0.09 dex
Rotational velocity (v sin i)4.1[7] km/s
Age3.2–4.1[7][8] Gyr
Other designations
ι Per, BD+49°857, FK5 112, GC 3740, HD 19373, HIP 14632, HR 937, SAO 38597, PPM 45875, CCDM J03091+4936A, WDS J03091+4937A[9]
Database references
SIMBADdata

ι Persei, Latinized as Iota Persei, is a single[10] star in the northern constellation Perseus. This object is visible to the naked eye as a faint, yellow-white hued point of light with an apparent visual magnitude of 4.1.[2] It is located 34.5 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +49 km/s.[1] Iota Persei has a relatively high proper motion across the sky.[9]

ι Persei in optical light

This is a late F- or early G-type main-sequence star with a stellar classification of around G0V.[3] It is about 3–4[7][8] billion years old and is spinning slowly with a projected rotational velocity of 4 km/s.[7] The star has 1.1 times the mass of the Sun and 1.4 times the Sun's radius. It is radiating more than double the luminosity of the Sun from its photosphere at an effective temperature of 5,921 K.[6]

There is a 12.4-magnitude line-of-sight companion star that is not believed to be gravitationally associated with Iota Persei.[10] This object is located at an angular separation of 154.4″ from the primary along a position angle of 125°, as of 2014.[11]

  1. ^ a b c d e f g Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. ^ a b c d Cite error: The named reference Jennens1975 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Keenan1989 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference gray2006 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Holmberg2009 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Soubiran2024 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference apjss159_1 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference apj687 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference WDSC2014 was invoked but never defined (see the help page).
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