Wolf 424

Wolf 424

Starbox begin
name=Wolf 424 A/B
Starbox observe
epoch=J2000
ra=12h 30m 17.2s
dec=+09° 01' 15"
appmag_v=13.18/13.17
constell=Virgo
Starbox character
class=M5.5 V/M7
b-v=1.84/
u-b=1.19/
variable=None/Flare star
Starbox astrometry
radial_v=-553.7
prop_mo_ra=-1796
prop_mo_dec=233
parallax=227.90
p_error=4.60
absmag_v=14.28/14.28
Starbox visbin
name=GJ 473 B
period=16.2
axis=0.76
eccentricity=0.28
inclination=103
node=151
periastron=1961.6
Starbox catalog
names=GJ 473 A/B, Glicas 012-043 A/B, GCTP 2890, LHS 333 A/B.

Wolf 424 is a binary star system comprising two red dwarf stars at a distance of approximately 14.2 light years from the Sun. It is located in the constellation Virgo, between the stars ε Virginis and δ Virginis.

The Wolf 424 system has a semi-major axis of 4.1 AU and an eccentricity of 0.28. The stars have an orbital period of 16.2 years and have an apparent magnitude of about 12.5.

Wolf 424A is a cool main sequence red dwarf star of approximately 0.14 solar masses and a radius of 0.17 solar radii. It is one of the dimmest objects within 15 light years of the Sun. Its companion, Wolf 424B, is a cool main sequence red dwarf star of approximately 0.13 solar masses and a radius of 0.14 solar radii. It is a known flare star that has been designated FL Virginis, and may experience sunspot activity.

Due to its proximity and fast motion towards the Sun, Wolf 424 will brighten by more than 2% over the course of the 21st century. In approximately 7700 years, it will make its nearest approach at a distance of about 1 light yearFact|date=March 2008, and will become the nearest star.

ee also

* List of nearest stars

References

* W. D. Heintz, "Astrometric study of 4 binary stars", 1972, "Astronomical Journal", 77, 160.
* G. Torres, T. J. Henry, O. G. Franz, L. H. Wasserman, "The nearby low-mass visual binary Wolf 424", "Astronomical Journal", 117, 1999.

External links

* [http://nemesis.stsci.edu/~kochte/wolf-page.html Wolf 424 Data page]
* [http://www.solstation.com/stars/wolf424.htm Wolf 424 AB]
* [http://www.solstation.com/stars/wolf424.jpgA NASA image of Wolf 424 AB]


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