Neha Patil (Editor)

WISE J0254 0223

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Constellation
  
Cetus

Apparent magnitude (Y (MKO filter system))
  
16.999±0.014

Apparent magnitude (K (MKO filter system))
  
16.73±0.05

Apparent magnitude (J (MKO filter system))
  
15.916±0.008

Apparent magnitude (H (MKO filter system))
  
16.29±0.02

Proper motion (μ)
  
RA: 2588±27 mas/yr; Dec.: 273±27 mas/yr

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WISEPA J025409.45+022359.1 (designation is abbreviated to WISE 0254+0223) is a brown dwarf of spectral class T8, located in constellation Cetus at approximately 24.2 light-years from Earth.

Contents

Discovery

WISE 0254+0223 was discovered in 2011 from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satellite — NASA infrared-wavelength 40 cm (16 in) space telescope, which mission lasted from December 2009 to February 2011. WISE 0254+0223 has two discovery papers: Scholz et al. (2011) and Kirkpatrick et al. (2011) (the first was published earlier).

  • Scholz et al. discovered two late T-type brown dwarfs, including WISE 0254+0223, using preliminary data release from WISE and follow-up near-infrared spectroscopy with LUCIFER1 near-infrared camera/spectrograph at the Large Binocular Telescope (LBT).
  • Kirkpatrick et al. presented discovery of 98 new found by WISE brown dwarf systems with components of spectral types M, L, T and Y, among which also was WISE 0254+0223.

    • Distance

    Currently the most accurate distance estimate of WISE 0254+0223 is a trigonometric parallax, measured using Spitzer Space Telescope and published in 2013 by Trent Dupuy and Adam Kraus: 0.135 ± 0.015 arcsec, corresponding to a distance 7.4+0.9
    −0.7     pc    , or 24.2+3.0
    −2.4     ly    .

    WISE 0254+0223 distance estimates

    Non-trigonometric distance estimates are marked in italic. The most accurate estimate is marked in bold.

    Space motion

    WISE 0254+0223 has a large proper motion of about 2602 milliarcseconds per year.

    WISE 0254+0223 proper motion estimates

    The most accurate estimates are marked in bold.

    References

    WISE J0254+0223 Wikipedia
    (Text) CC BY-SA


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