- X -49
- Y -48
- Z -76
- Infra-Red source
- UV-emission source
13 Trianguli is the Flamsteed designation for a star in the northern constellation of Triangulum. It has an apparent visual magnitude of 5.86, so according to the Bortle scale it is faintly visible from dark suburban skies. Measurements made with the Hipparcos spacecraft show an annual parallax shift of 0.03184″, which is equivalent to a distance of around 102 ly (31 pc) from the Sun.
A stellar classification of G0 V indicates this is a main sequence star that is generating energy by fusing hydrogen into helium at its core. It has about 110% of the Sun's mass and shines with 3.72 times the luminosity of the Sun. The stellar atmosphere has an effective temperature of 5,846 K, giving it the yellow hue of a G-type star. It appears to be older than the Sun, with an estimated age of 6.45 billion years.
In 1994, an astrometric companion was reported at an angular separation of 0.020″. However, follow-up observations reported in 2005 not only failed to recover this object but also returned a null result on a search for planetary companions. The star has been examined for an infrared excess that could indicate the presence of an orbiting debris disk, but no such excess was found.This article uses material from the Wikipedia article "13 Trianguli", which is released under the Creative Commons Attribution-Share-Alike License 3.0.