🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.01

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.61 AU - 0.69 AU

Year: 344 Days

Day: 35.7 Hours

Environment

Temp: -141 °C

Axial Tilt: 22.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 236.4

Radius: 8.7

Gravity: 3.12 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.76 AU - 1.2 AU

Year: 636 Days

Day: 10.3 Hours

Environment

Temp: -162 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 81,402,234 km

• M1: 111,450 km (0.111 R)
• M2: 382,971 km (0.098 R)
• M3: 925,861 km (0.095 R)
• M4: 1,323,792 km (0.088 R)
• M5: 1,730,399 km (0.094 R)
• M6: 2,422,438 km (0.058 R)
• M7: 3,187,332 km (0.087 R)
• M8: 3,847,657 km (0.111 R)
• M9: 5,203,463 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899

Radius: 8.2

Gravity: 13.37 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 0.99 AU - 1.49 AU

Year: 906 Days

Day: 12.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 81,402,234 km

• M1: 102,026 km (0.085 R)
• M2: 365,617 km (0.108 R)
• M3: 700,268 km (0.1 R)
• M4: 1,038,209 km (0.099 R)
• M5: 1,365,679 km (0.087 R)
• M6: 1,698,235 km (0.072 R)
• M7: 2,528,503 km (0.117 R)
• M8: 3,240,739 km (0.106 R)
• M9: 3,775,252 km (0.102 R)
• M10: 4,613,449 km (0.115 R)
• M11: 5,429,056 km (0.087 R)
• M12: 5,714,339 km (0.084 R)
• M13: 6,031,188 km (0.113 R)
• M14: 6,337,415 km (0.107 R)
• M15: 7,467,178 km (0.076 R)
• M16: 8,158,918 km (0.11 R)
• M17: 9,434,689 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.9

Radius: 12.7

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 1.31 AU - 1.93 AU

Year: 1353 Days

Day: 10.2 Hours

Environment

Temp: -171 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 81,402,234 km

• M1: 157,975 km (0.117 R)
• M2: 582,684 km (0.08 R)
• M3: 1,144,424 km (0.103 R)
• M4: 1,869,674 km (0.071 R)
• M5: 2,442,634 km (0.059 R)
• M6: 3,598,278 km (0.109 R)
• M7: 4,283,436 km (0.094 R)
• M8: 4,708,294 km (0.079 R)
• M9: 5,269,884 km (0.112 R)
• M10: 5,797,665 km (0.099 R)
• M11: 7,273,299 km (0.112 R)
• M12: 7,809,009 km (0.099 R)
• M13: 8,700,463 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 124.7

Radius: 11

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 2.33 AU - 3.47 AU

Year: 3240 Days

Day: 10.8 Hours

Environment

Temp: -196 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 81,402,234 km

• M1: 138,378 km (0.103 R)
• M2: 552,166 km (0.051 R)
• M3: 1,194,838 km (0.052 R)
• M4: 1,600,996 km (0.1 R)
• M5: 2,122,046 km (0.063 R)
• M6: 2,727,319 km (0.093 R)
• M7: 6,246,010 km (0.118 R)
• M8: 7,813,048 km (0.087 R)
• M9: 8,285,179 km (0.051 R)
• M10: 8,776,159 km (0.118 R)
• M11: 11,318,126 km (0.092 R)
• M12: 11,959,602 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 375.3

Radius: 11.9

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 2.69 AU - 4.29 AU

Year: 4277 Days

Day: 8.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 81,402,234 km

• M1: 147,952 km (0.065 R)
• M2: 559,646 km (0.108 R)
• M3: 964,757 km (0.059 R)
• M4: 1,511,088 km (0.06 R)
• M5: 2,444,280 km (0.076 R)
• M6: 3,013,350 km (0.108 R)
• M7: 3,403,651 km (0.08 R)
• M8: 4,011,317 km (0.115 R)
• M9: 5,368,320 km (0.061 R)
• M10: 6,306,448 km (0.07 R)
• M11: 7,163,943 km (0.058 R)
• M12: 7,864,958 km (0.079 R)
• M13: 9,001,902 km (0.108 R)
• M14: 9,666,566 km (0.087 R)
• M15: 10,166,821 km (0.076 R)
• M16: 10,765,362 km (0.065 R)
• M17: 11,945,540 km (0.12 R)
• M18: 12,931,988 km (0.108 R)
• M19: 14,413,007 km (0.087 R)
• M20: 14,914,160 km (0.107 R)
• M21: 15,478,742 km (0.058 R)
• M22: 16,271,461 km (0.098 R)
• M23: 17,314,308 km (0.04 R)
• M24: 19,050,990 km (0.071 R)
• M25: 20,023,226 km (0.096 R)
• M26: 20,521,686 km (0.093 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 161.6

Radius: 5.8

Gravity: 4.8 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 6.19 AU - 6.75 AU

Year: 10796 Days

Day: 17.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 81,402,234 km

• M1: 82,728 km (0.07 R)
• M2: 282,142 km (0.083 R)
• M3: 838,496 km (0.048 R)
• M4: 1,584,241 km (0.034 R)
• M5: 2,107,535 km (0.06 R)
• M6: 3,321,372 km (0.03 R)
• M7: 5,710,749 km (0.073 R)
• M8: 7,664,198 km (0.035 R)
• M9: 9,551,226 km (0.107 R)
• M10: 16,113,635 km (0.072 R)
• M11: 16,294,350 km (0.056 R)
• M12: 16,598,482 km (0.115 R)
• M13: 17,155,435 km (0.082 R)
• M14: 18,635,556 km (0.101 R)
• M15: 26,315,313 km (0.05 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 761.2

Radius: 5.5

Gravity: 25.16 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 9.7 AU - 10.46 AU

Year: 20994 Days

Day: 17.3 Hours

Environment

Temp: -239 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 81,402,234 km

• M1: 68,366 km (0.099 R)
• M2: 251,175 km (0.086 R)
• M3: 433,834 km (0.064 R)
• M4: 626,217 km (0.084 R)
• M5: 2,514,890 km (0.062 R)
• M6: 3,153,673 km (0.087 R)
• M7: 5,196,132 km (0.09 R)
• M8: 6,311,983 km (0.119 R)
• M9: 7,139,409 km (0.114 R)
• M10: 7,679,307 km (0.093 R)
• M11: 8,193,475 km (0.116 R)
• M12: 8,675,480 km (0.084 R)
• M13: 11,242,729 km (0.067 R)
• M14: 11,770,510 km (0.105 R)
• M15: 15,937,559 km (0.079 R)
• M16: 16,943,156 km (0.102 R)
• M17: 17,548,877 km (0.082 R)
• M18: 25,417,426 km (0.099 R)
• M19: 28,446,933 km (0.026 R)
• M20: 30,807,138 km (0.088 R)
• M21: 37,055,542 km (0.116 R)
• M22: 43,292,577 km (0.025 R)
• M23: 44,097,862 km (0.047 R)
• M24: 46,742,303 km (0.036 R)
• M25: 51,441,173 km (0.104 R)
• M26: 57,213,107 km (0.105 R)
• M27: 57,793,697 km (0.115 R)
• M28: 61,967,328 km (0.079 R)
• M29: 62,375,131 km (0.067 R)
• M30: 69,582,009 km (0.115 R)
• M31: 70,464,786 km (0.055 R)
• M32: 73,841,359 km (0.032 R)
• M33: 77,796,877 km (0.089 R)
• M34: 78,033,840 km (0.113 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 452 - 14,062 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit