Planetary Data -Tau Ceti System
| System Name | Tau Ceti | Part of Cetus the Whale |
| Distance from Earth | 11.9 Light Years | |
| Number of Stars | 1 | |
| Star 1 | Deucado | |
| Star Type | G8V | |
| Abs. Magnitude | 5.7 | |
| Relative to Sol | .83 (dimmer) | |
| Color | Orange-white | |
| Planets | 7 Major | |
| Habitable Planets | One (Deucado) | |
| Planetary Data | Deucado | |
| Planet Designation | Planet 2 | Called Deucado by the Vuduri |
| Atmosphere | Oxygen (21%), Nitrogen (78%) | |
| Mass | 90% of Earth | |
| Density | 98% of Earth | |
| Gravity | .9 G | (90% of Earth) |
| Rotational Period | 22.5 hours | (Length of day) |
| Distance from star | .72 Astronomical Units | 67 million miles |
| Orbital Rotation | 270 days | (Length of year) |
| 2 Major Moons | Mockay and Givvy | |
| Designation | Moon 1 | Called Mockay by residents |
| Size | 50 km diameter by 120 km | Cigar-shaped |
| Distance | 18,200 kilometers | |
| Circles planet | Every 12 hours | Always appears once per night |
| Apparent Magnitude | -4.6 | Much dimmer than Earth's moon |
| Designation | Moon 2 | Called Givvy by residents |
| Size | 1650 km diameter | Round |
| Distance | 75,448 kilometers | |
| Circles planet | Once every 3 days | Appears for two nights out of three |
| Apparent Magnitude | -10.3 | Dimmer than Earth's moon |
| Planetary Data | Grentadar | |
| Planet Designation | Planet 3 | Called Grentadar by the Vuduri |
| Atmosphere | Hydrogen, Helium, Methane, Ammonia, Hydrogen Sulfide, Water | Unbreathable |
| Mass | 3.7 x 1027 kg | 600 times that of Earth |
| Density | 1.31 gm/cc | (little more than water) |
| Gravity | 5.15 G | |
| Rotational Period | 9 hours | (Length of day) |
| Distance from star | 3.64 Astronomical Units | 338 million miles |
| Orbital Rotation | 14 years | (Length of year) |