Epoch J2000.0 Equinox J2000.0 (ICRS)
|Right ascension||03h 46m 46.508s|
|Declination||+24° 56′ 02.82″|
|Apparent magnitude (V)||19.0|
|Proper motion (μ)||RA: 547 mas/yr
Dec.: -1182 mas/yr
|Parallax (π)||36 ± 5 mas|
|Distance||approx. 90 ly
(approx. 28 pc)
|Radius||0.011 ± 0.001 R☉|
|Temperature||3,800 ± 100 K|
|Age||11 - 12  Gyr|
WD 0346+246, WD J0346+249
WD 0346+246 is a white dwarf in the ecliptic constellation of Taurus. It was discovered in 1997 when examination of photographs taken for a survey of brown dwarfs in the Pleiades revealed a faint star with high proper motion. It is one of the coolest white dwarfs known, with an effective temperature estimated to be approximately 3900 K equaling to a spectral type of M0.
Recent studies using NASA's Spitzer Space Telescope and MDM Observatory's 2.4-meter telescope (near Tucson, Arizona, USA) shows that this white dwarf (together with another one: SDSS J110217, 48+411315.4) has a lowest (for white dwarfs) surface temperature about 3700 and 3800 degrees K due to the age of 11 to 12 billion years. 
- "WD 0346+246". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 5, 2007.
- WD 0346+246: A Very Low Luminosity, Cool Degenerate in Taurus, N. C. Hambly, S. J. Smartt, and S. Hodgkin, Astrophysical Journal Letters 489 (November 1997), pp. L157–L160.
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