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|WikiProject Astronomy / Astronomical objects||(Rated Start-class, Mid-importance)|
The following 2008 reference gives age estimates of 6.1 and 6.6 Gyr, which is significantly different from the currently listed value.
- Mamajek, Eric E.; Hillenbrand, Lynne A. (November 2008). "Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics". The Astrophysical Journal 687 (2): 1264–1293. Bibcode:2008ApJ...687.1264M. doi:10.1086/591785.