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11 Persei

11 Persei
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Perseus
Right ascension 02h 43m 02.83826s[1]
Declination +55° 06′ 21.6700″[1]
Apparent magnitude (V) 5.76[2]
Characteristics
Evolutionary stage main sequence[3]
Spectral type B7 III(p?) (Hg?)[4]
B−V color index −0.110±0.003[2]
Astrometry
Radial velocity (Rv)−0.7±1.0[2] km/s
Proper motion (μ) RA: +34.859[1] mas/yr
Dec.: −21.955[1] mas/yr
Parallax (π)7.8022 ± 0.0874 mas[1]
Distance418 ± 5 ly
(128 ± 1 pc)
Absolute magnitude (MV)0.16[2]
Details
Mass3.77±0.06[3] M☉
Radius3.2[5] R☉
Luminosity210.4+21.9
−19.9[3] L☉
Surface gravity (log g)4.19[6] cgs
Temperature14,550[6] K
Metallicity [Fe/H]+0.09[6] dex
Rotation25–70 d[7]
Rotational velocity (v sin i)4.50[8] km/s
Age50.9±12.2[9] Myr
Other designations
11 Per, BD+54°598, FK5 2188, HD 16727, HIP 12692, HR 785, SAO 23555[10]
Database references
SIMBADdata

11 Persei is a single[11][8] star in the constellation of Perseus, located about 418 light years away from the Sun. It is visible to the naked eye as a dim, blue-white hued star with an apparent visual magnitude of 5.76.[2]

This is a chemically peculiar mercury-manganese star.[12][6] Cowley (1972) found a stellar classification of B7 III(p?) (Hg?),[4] while Hube (1970) had B8 IV,[13] and Appenzeller (1967) showed B6 V.[14] Stellar models indicate this is a young B-type main sequence star[3] with an estimated age of around 51[9] million years. It has a low rotation rate, showing a projected rotational velocity of 4.50 km/s.[8] The star has 3.8[3] times the mass of the Sun and is radiating 210[3] times the Sun's luminosity from its photosphere at an effective temperature of 14,550 K.[6]

  1. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference zorec2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Cowley1972 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference PasinettiFracassini2001 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference Ghazaryan2016 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Wahlgren2012 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Hubrig2001 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Tetzlaff2011 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Adelman2010 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Hube1970 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Appenzeller1967 was invoked but never defined (see the help page).
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