36 Lyncis

36 Lyncis

A light curve for EI Lyncis, plotted from TESS data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Lynx
Right ascension 09h 13m 48.21318s[2]
Declination +43° 13′ 04.1940″[2]
Apparent magnitude (V) 5.30[3]
Characteristics
Spectral type B9IVpHgMn[4]
B−V color index −0.130±0.003[3]
Variable type SX Ari[5]
Astrometry
Radial velocity (Rv)21.3±1.7[3] km/s
Proper motion (μ) RA: –30.236[2] mas/yr
Dec.: −32.032[2] mas/yr
Parallax (π)5.2687 ± 0.1577 mas[2]
Distance620 ± 20 ly
(190 ± 6 pc)
Absolute magnitude (MV)−0.95[3]
Details
Mass4.2[2] M☉
Radius4.21[6] R☉
Luminosity505[2] L☉
Surface gravity (log g)3.65[7] cgs
Temperature13,700[7] K
Metallicity [Fe/H]+0.60[7] dex
Rotation3.83476±0.00004 d[8]
Rotational velocity (v sin i)49±1[8] km/s
Other designations
36 Lyn, EI Lyn, BD+43°1893, FK5 346, HD 79158, HIP 45290, HR 3652, SAO 42759[9]
Database references
SIMBADdata

36 Lyncis is a solitary[10] variable star located around 620 light years away from the Sun in the northern constellation of Lynx. It has the variable star designation of EI Lyncis, while 36 Lyncis is the Flamsteed designation. This object is visible to the naked eye as a dim, blue-white hued star with an apparent visual magnitude of 5.30.[3] It is moving further away from the Earth with a heliocentric radial velocity of 21 km/s.[3]

This is a magnetic, helium-weak Bp star[11][12] with a stellar classification of B9IVpHgMn,[4] although the spectral peculiarities have led to alternate classifications such as B8 IIImnp.[8] It is sometimes classified as a mercury-manganese star.[13] It is also an 'sn' star, displaying a spectrum with generally sharp lines for most elements in combination with broad, diffuse lines of helium.[14] 36 Lyncis has been classified as an SX Arietis variable[15] with an amplitude of 0.03 in visual magnitude and a rotationally-modulated period of 3.834 days.[5] The star is spinning with a projected rotational velocity of 49 km/s[8] and a rotation rate of 3.83476 days.[8] It has 4.21[6] times the Sun's radius and is radiating 505 times the luminosity of the Sun from its photosphere at an effective temperature of 13,700 K.[7]

  1. ^ Cite error: The named reference MAST was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference abt1995 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference shulyak2014 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference Ghazaryan2018 was invoked but never defined (see the help page).
  8. ^ a b c d e Cite error: The named reference Cowley1972 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Oksala2018 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Adelman2000 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference ghazaryan was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Shore1987 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference AAVSOEI was invoked but never defined (see the help page).