Ringworld parameters
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Parameters and technical specifications for Larry Niven's Ringworld.

Note.
This data is based on information in Larry Niven's Ringworld: Roleplaying adventure beneath the Great Arch [reference 1] . All appropriate figures are represented in SI units, with more conventional units following if appropriate.
Larry Niven's Ringworld.
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
References.
1.
Larry Niven's Ringworld: Roleplaying adventure beneath the Great Arch
John Hewitt and Sherman Kahn
Chaosium, Inc.
reference 1
Cross-references.
Physics reference: SI units
     A comprehensive table of the base SI units.
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