Star Charts · Chapter 5 · Beta Quadrant
5.3 Vulcan (40 Eridani A)
An annotated system chart of Vulcan's trinary primary 40 Eridani A (Omicron 2 Ceti) details its three stars and three planets, including Class-M Vulcan and Class-G T'Khut, with comparative star sizes and a note on the true distances between the system's suns.
System chart of Vulcan (40 Eridani A) showing the primary (A) and its companion stars 40 Eridani B and C, the three planets including Vulcan (II) and T'Khut (III), comparative star sizes, and a km scale.
Vulcan
- Name of Primary: 40 Eridani A (Omicron 2 Ceti)
- Type: Trinary
- Spectral Class: K1V
- Absolute Magnitude: 6.0
- Number of Planets: 3
- Inhabited Planets: 1
- Other: Asteroid belt
- I: Class-B
- II: Class-M (Vulcan)
- III: Class-G (T'Khut)
- Name of Secondary: 40 Eridani B
- Spectral Class: AVII
- Absolute Magnitude: 11.2
- Number of Planets: 0
- Name of Tertiary: 40 Eridani C
- Spectral Class: M4V
- Absolute Magnitude: 12.3
- Number of Planets: 0
- Orbital Period: 248 years
Orange orbits indicate the Hot Zone; green orbits the Ecosphere; blue orbits the Cold Zone; red orbits the Trojan orbit.
NOTE: Planetary orbits are shown approximately to scale; planets, stars, and relative position of star systems are not (actual distance between 40 Eridani A and 40 Eridani B is 400 AU; distance between 40 Eridani B and 40 Eridani C is 44 AU).