| Planet | Thsner-Ralina | Sthmi-Weisnol | Tshia-Caponis | Iersia | Thsopla-Meninar | Tshival-Ospir | Harmisth |
| Gravity | G1 (0.5g) | G1 (0.75g) | G2 (1.1g) | G2 (1g) | G5 (5.75g) | G4 (3.1g) | G3 (1.75g) |
| Radiation | R4 (350r/hr) | R3 (10r/day) | R2 (15r/yr) | R1 (5r/yr) | R3 (5r/day) | R2 (10r/wk) | R1 (1r/yr) |
| Atmosphere | A1 | A4 | A2 | A2 | A5 | A4 | A1 |
| Pressure | P1 (0.5atm) | P4 (10atm) | P3 (3.75atm) | P3 (1atm) | P5 (1250atm) | P1 (0.25atm) | P1 (0.2atm) |
| Heat | H4 (450C) | H4 (120C) | H2/3 (50C) | H2 | H3 (95C) | H1 (-100C) | H0 (-200C) |
| Orbit | 0.3 AU | 0.6 AU | 0.8 AU | 1 AU | 9 AU | 13 AU | 27 AU |
| Diameter | 1000 km | 4000 km | 8000 km | 11000 km | 125000 km | 21000 km | 7500 km |
| Year | 111 days | 220 days | 300 days | 370 days | 2300 days | 2900 days | 10150 days |
| Day | 100 hours | 5 hours | 20 hours | 30 hours | 50 hours | 20 hours | 75 hours |
| Satellites | 0 | 0 | 1 | 2 | 5 | 0 | 1 |
As with most things in Iersian society, planet names have hyphenated names to pay respects to the first Thsier and the first Bakorian astronomers who caught sight of them. With the forming of the world government, the home planet of Ierths-Bakorsia was renamed Iersia. The only other planet without a dual name is Harmisth, the small, dark, cold planet that was discovered only since the invention of powerful telescopes--it was named as a combination of the Thsier astronomer, Thsisth, who discovered it, and the Bakorian corporation, Harmemak, he was working with at the time.
Thsernis, the first settlement and capitol of the planetary bureaucracy, has a strong history of Thsier survival. They have had more than a few accidents with supply lines, earthquakes, and bio-dome cracks. The "gentleness" of the planet and the abilities of the Thsier to survive without food and water for long periods of time have made the city an idol to Thsier technology, strength, endurance, and ingenuity. While some of the various colonies hold a significant number of Bakorians, the population, planet wide, is dominated by the Thsier because of their survival abilities and the Bakorians' dislike of the climate.
The land around Thsernis is the only stretch that is possibly arable. Having lower heavy metal counts, there is an impressive network of greenhouses in this area. Using offworld water (and carefully caught and recirculated by various technologies) and onworld soil, the network can produce enough food to feed the inhabitants of Thsernis for up to three days. However, the vast majority of the residents still rely almost totally on offworld food and water.
Tshia-Caponis A, the planet's only moon, is not nearly as rich as the planet in minerals and has no atmosphere. Despite this, many mining complexes have been set up on the moon by those who wish to avoid the fervent competition on the planet. They have in the past come into conflict by hoarding foodstuffs meant for the planet and reselling them at a tidy profit.
Ierths: Named after the original Thsier name of Iersia, Ierths has been transformed in modern times into a luxurious resort world. Bakorian and Thsier alike come to the bio-domes on Ierths to escape their troubles, play in the light gravity, and relax. Any form of entertainment can be found on this moon from Thsier prize fighters to Bakorian mind readers to gambling to theater.
Bakorsia: A much quieter satellite than Ierths, Bakorsia has become home to some of the foremost technical universities and science research corporations in the system. The original work on the Tshsim Project was conducted here at Ucolina Corp, before being transferred to their more secretive site on Thsopla-Meninar C. Many of the best scientists in the known galaxy have been schooled here, done research here, or taught here.
Thsopla-Meninar C is the equivalent of Tshia-Caponis to many observers because of its tremendous supply of natural water, frozen all over its surface. Other than ice oceans, the surface is otherwise unremarkable--thin, toxic atmosphere; frigid temperatures, low gravity (~0.6g). Kopkor, the first settlement, was initially designed as a mining colony to bring water to Tshia-Caponis, but has emerged as a fantastic, cybernetic research location as well. The Bakorian sect known as the Roppkor has its stronghold on this distant moon, away from the prying eyes the Highest and those of the Bakorian species that disapprove of cybernetic implants. The research in this area has spread to the other three cities on Thsopla-Meninar C, including Loknicin, current home of the Tshsim Project and new corporate headquarters of Ucolina Corp.
The four cities on Thsopla-Meninar C have quickly evolved into some of the wealthiest in the system. Not only do they have excesses of water to trade to Tshia-Caponis, but the cybernetic research institutes bring in some of the largest monetary grants the Thsier give. All four cities are among the top twenty-five in terms of standard of living in the entire system, and with the diplomacy with the Darvin finally beginning to take steps forward, they expect their technologies will be even more in demand.