38 Lyncis

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Template:Short description

38 Lyncis
Template:Location mark
Location of 38 Lyncis (circled in red)
Observation data
Epoch J2000      Equinox J2000
Constellation Lynx
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 3.82[2] (3.95 + ? + 6.30)[3]
Characteristics
Spectral type A3V[4] (A1V + A4V)[5]
B−V Template:Engvar Script error: No such module "val".[2]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[2] km/s
Absolute magnitude (MV)+0.98[6]
A
Proper motion (μ) RA: –36.288[7] mas/yr
Dec.: −121.767[7] mas/yr
Parallax (π)27.8044±0.7879 mas[7]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
B
Proper motion (μ) RA: –26.513[8] mas/yr
Dec.: −127.261[8] mas/yr
Parallax (π)24.4730±0.1240 mas[8]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Details
38 Lyn A
Mass1.90[9] Template:Solar mass
Radius3.07[10] Template:Solar radius
Luminosity32[6] Template:Solar luminosity
Surface gravity (log g)3.86[9] cgs
TemperatureScript error: No such module "val".[9] K
Metallicity [Fe/H]Script error: No such module "val".[11] dex
Rotational velocity (v sin i)163[11] km/s
Age213[9] Myr
38 Lyn B
Mass1.30/0.90[12] Template:Solar mass
Radius2.55[8] Template:Solar radius
Luminosity5[8] Template:Solar luminosity
Temperature5,409[8] K
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[13]
Database references
SIMBADdata
A
B

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38 Lyncis is a multiple star system in the northern constellation of Lynx. It located about 125 light-years from the Sun, based on parallax.

When viewed through a moderate telescope, two components—a brighter blue-white star of magnitude 3.9 and a fainter star of magnitude 6.1 that has been described as lilac as well as blue-white—can be seen.[14] The pair have an angular separation of Script error: No such module "val". and an estimated period of Script error: No such module "val"..[12] The fainter component is itself a close binary which can only be resolved using speckle interferometry. The two were separated by Script error: No such module "val". in 1993[15] and Script error: No such module "val". in 2008,[16] and have an estimated orbital period of Script error: No such module "val"..[12] A further faint star, component E Script error: No such module "val". away, is a proper-motion companion.[17][18] Two other faint companions listed in multiple star catalogues as components C and D are unrelated background objects.[19][20]

38 Lyncis was given as a standard star for the spectral class of A3 V when the Morgan-Keenan classification system was first defined in 1943, apparently for the two components combined.[21]

The primary star, component A, is a class A main sequence star around twice the mass of the sun. An effective temperature of Script error: No such module "val". and a radius of Template:Solar radius mean that it is over thirty times more luminous than the sun. It has been listed as a λ Boötis star, although it is no longer considered to be a member.[6] The fainter of the pair, component B, has been given a spectral class of A4V, although it consists of two very close stars. Their properties are poorly-known, even the difference in their apparent magnitudes can only be estimated to be approximately 2. Based on this, their masses are estimated to be Template:Solar mass and Template:Solar mass respectively.[12] Component E is a 15th magnitude star with an approximate spectral type of M2, a red dwarf, and an estimated mass of Template:Solar mass,[12] and a temperature of Script error: No such module "val"..[18]

References

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  1. ↑ a b Script error: No such module "Citation/CS1".
  2. ↑ a b c Script error: No such module "Citation/CS1".
  3. ↑ Script error: No such module "Citation/CS1".
  4. ↑ Script error: No such module "Citation/CS1".
  5. ↑ Script error: No such module "Citation/CS1".
  6. ↑ a b c Script error: No such module "Citation/CS1".
  7. ↑ a b c Template:Cite DR2
  8. ↑ a b c d e f Template:Cite DR2
  9. ↑ a b c d Script error: No such module "Citation/CS1".
  10. ↑ Script error: No such module "Citation/CS1".
  11. ↑ a b Script error: No such module "Citation/CS1".
  12. ↑ a b c d e Script error: No such module "citation/CS1".
  13. ↑ Template:Cite simbad
  14. ↑ Script error: No such module "citation/CS1".
  15. ↑ Script error: No such module "Citation/CS1".
  16. ↑ Script error: No such module "Citation/CS1".
  17. ↑ Script error: No such module "Citation/CS1".
  18. ↑ a b Template:Cite DR2
  19. ↑ Script error: No such module "Citation/CS1".
  20. ↑ Script error: No such module "Citation/CS1".
  21. ↑ Script error: No such module "Citation/CS1".

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Template:Stars of Lynx

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