| Distance from Sol |
1.90 Em = 201 ly |
| Distance above mean galactic plane |
2.35 Em = 248 ly |
| Sun's spectral type |
G3 Ve |
| Sun's population |
I (galactic disk) |
| Sun's effective surface temperature |
5600 K |
| Sun's mass |
1.93 x 1030 kg = 0.970 solar |
| Sun's radius |
680 Mm = 0.977 solar |
| Sun's luminosity |
3.6 x 1026 W = 0.94 solar |
| Sun's absolute magnitude |
+5.0 |
| Shadow square number |
20 |
| Shadow square shape |
rectangular |
| Shadow square width |
~4.1 Gm |
| Shadow square height |
~1.6 Gm |
| Shadow square area (each) |
6.6 x 1018 m2 |
| Shadow square area (total) |
1.3 x 1020 m2 |
| Shadow square spacing (average) |
10 Gm |
| Shadow square ring radius |
43.9 Gm = 0.293 au |
| Shadow square ring angular speed |
5.11 x 10-6 rad/s |
| Shadow square ring rotation period |
1.23 Ms = 14.2 d |
| Ringworld mass |
2.1 x 1027 kg = 350 Earths |
| Ringworld radius |
153 Gm = 1.02 au |
| Ringworld width |
1.60 Gm |
Rim wall height |
~1600 km |
| Ringworld centripetal acceleration ("gravity") |
9.73 m/s2 = 0.992 gee |
| Ringworld angular speed |
7.98 x 10-6 rad/s |
| Ringworld rotation period |
787 ks = 9.11 d |
| Ringworld tangential speed |
1.22 Mm/s |
| Ringworld moment of inertia |
4.9 x 1049 kg m2 |
| Ringworld angular momentum |
3.9 x 1044 kg m2/s |
| Ringworld rotational kinetic energy |
1.6 x 1039 J |
| Ringworld atmospheric composition |
N2 74%, O2 23%, Ar 2%, He 1%, trace elements < 1% |
| Scrith foundation thickness (average) |
30 m |
| Scrith foamed meteor shielding thickness (average) |
370 m |
| Tension stress induced in scrith foundation due to rotation |
~7 x 1016 Pa
|