4.43
Apparent Mag16.26
Distance (ly)K0.5V
Spectral Type5,072
Temperature (K)40 Eridani is a triple star system with a main-sequence K star, a white dwarf, and a red dwarf. It is famous as the location of the fictional planet Vulcan in Star Trek.
Stellar Data
Apparent Magnitude4.43
Absolute Magnitude5.92
Distance16.26 light-years
Spectral TypeK0.5V
Temperature5,072 K
Luminosity0.46 L☉
Radius0.81 R☉
Mass0.84 M☉
Right Ascension04h 15m 16.3s
Declination-07° 39′ 10.3″
ConstellationEridanus
Notable Facts
- 40 Eridani is a triple system with a K dwarf, white dwarf, and red dwarf
- Gene Roddenberry identified it as the home of Mr. Spock's planet Vulcan
- The white dwarf component was one of the first discovered