🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.09

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.49 AU - 0.67 AU

Year: 290 Days

Day: 29.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 26 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.7

Radius: 13.4

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.66 AU - 0.72 AU

Year: 376 Days

Day: 7.7 Hours

Environment

Temp: -134 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 38,430,288 km

• M1: 166,652 km (0.118 R)
• M2: 651,050 km (0.12 R)
• M3: 1,113,906 km (0.116 R)
• M4: 1,709,754 km (0.065 R)
• M5: 2,163,933 km (0.078 R)
• M6: 2,665,236 km (0.106 R)
• M7: 3,773,157 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 588.7

Radius: 10.1

Gravity: 5.77 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.74 AU - 0.84 AU

Year: 461 Days

Day: 11.1 Hours

Environment

Temp: -142 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,430,288 km

• M1: 125,662 km (0.114 R)
• M2: 447,597 km (0.074 R)
• M3: 890,257 km (0.043 R)
• M4: 1,249,441 km (0.096 R)
• M5: 1,656,198 km (0.086 R)
• M6: 2,024,508 km (0.092 R)
• M7: 2,631,127 km (0.039 R)
• M8: 3,015,743 km (0.114 R)
• M9: 3,366,700 km (0.064 R)
• M10: 3,682,202 km (0.107 R)
• M11: 4,976,972 km (0.102 R)
• M12: 5,307,284 km (0.047 R)
• M13: 5,635,352 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 240.9

Radius: 12

Gravity: 1.67 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.97 AU - 1.33 AU

Year: 809 Days

Day: 8.3 Hours

Environment

Temp: -166 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 38,430,288 km

• M1: 149,299 km (0.118 R)
• M2: 538,852 km (0.082 R)
• M3: 1,133,204 km (0.063 R)
• M4: 1,593,666 km (0.098 R)
• M5: 1,982,920 km (0.039 R)
• M6: 2,663,440 km (0.118 R)
• M7: 3,059,276 km (0.1 R)
• M8: 3,682,651 km (0.073 R)
• M9: 5,008,387 km (0.082 R)
• M10: 5,548,435 km (0.105 R)
• M11: 6,072,776 km (0.088 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 582.6

Radius: 13.4

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.03 AU - 1.63 AU

Year: 1006 Days

Day: 5.6 Hours

Environment

Temp: -165 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,430,288 km

• M1: 166,802 km (0.079 R)
• M2: 628,610 km (0.108 R)
• M3: 1,323,941 km (0.119 R)
• M4: 1,773,483 km (0.105 R)
• M5: 2,402,243 km (0.117 R)
• M6: 2,943,338 km (0.11 R)
• M7: 3,786,472 km (0.039 R)
• M8: 4,610,307 km (0.108 R)
• M9: 5,472,290 km (0.07 R)
• M10: 5,932,004 km (0.074 R)
• M11: 6,374,216 km (0.094 R)
• M12: 7,301,573 km (0.099 R)
• M13: 8,473,373 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 609.7

Radius: 10.3

Gravity: 5.75 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 2.35 AU - 2.95 AU

Year: 2830 Days

Day: 7 Hours

Environment

Temp: -208 °C

Axial Tilt: 45.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 38,430,288 km

• M1: 128,355 km (0.091 R)
• M2: 693,835 km (0.038 R)
• M3: 1,064,838 km (0.118 R)
• M4: 1,539,362 km (0.116 R)
• M5: 1,975,889 km (0.111 R)
• M6: 3,614,434 km (0.09 R)
• M7: 4,040,938 km (0.093 R)
• M8: 4,721,309 km (0.053 R)
• M9: 5,184,165 km (0.09 R)
• M10: 7,047,256 km (0.104 R)
• M11: 7,873,037 km (0.085 R)
• M12: 10,238,179 km (0.107 R)
• M13: 10,583,301 km (0.056 R)
• M14: 11,873,733 km (0.064 R)
• M15: 14,715,943 km (0.065 R)
• M16: 15,254,944 km (0.059 R)
• M17: 19,462,683 km (0.078 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 827.4

Radius: 14.6

Gravity: 3.88 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 4.19 AU - 6.35 AU

Year: 7936 Days

Day: 10.8 Hours

Environment

Temp: -213 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 38,430,288 km

• M1: 181,612 km (0.12 R)
• M2: 947,403 km (0.099 R)
• M3: 1,650,065 km (0.099 R)
• M4: 2,591,634 km (0.08 R)
• M5: 3,318,679 km (0.034 R)
• M6: 4,099,730 km (0.103 R)
• M7: 5,091,713 km (0.093 R)
• M8: 5,727,205 km (0.096 R)
• M9: 7,431,573 km (0.082 R)
• M10: 8,251,669 km (0.068 R)
• M11: 9,040,499 km (0.076 R)
• M12: 12,093,641 km (0.118 R)
• M13: 16,719,058 km (0.108 R)
• M14: 20,544,425 km (0.1 R)
• M15: 22,913,756 km (0.118 R)
• M16: 23,945,533 km (0.117 R)
• M17: 24,918,368 km (0.113 R)
• M18: 26,848,629 km (0.108 R)
• M19: 32,803,522 km (0.07 R)
• M20: 36,839,523 km (0.1 R)
• M21: 39,340,799 km (0.099 R)
• M22: 40,322,909 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 206.6

Radius: 6.4

Gravity: 5.04 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 6.68 AU - 8.02 AU

Year: 13072 Days

Day: 15.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 38,430,288 km

• M1: 79,586 km (0.098 R)
• M2: 476,918 km (0.111 R)
• M3: 1,929,214 km (0.071 R)
• M4: 3,044,466 km (0.109 R)
• M5: 4,347,464 km (0.117 R)
• M6: 4,989,388 km (0.054 R)
• M7: 5,565,938 km (0.098 R)
• M8: 8,699,116 km (0.118 R)
• M9: 8,913,490 km (0.11 R)
• M10: 10,466,465 km (0.083 R)
• M11: 12,352,296 km (0.099 R)
• M12: 12,953,979 km (0.066 R)
• M13: 15,121,652 km (0.115 R)
• M14: 16,001,287 km (0.057 R)
• M15: 18,419,387 km (0.117 R)
• M16: 20,764,184 km (0.091 R)
• M17: 22,166,964 km (0.104 R)
• M18: 23,218,487 km (0.058 R)
• M19: 28,884,357 km (0.112 R)
• M20: 30,827,783 km (0.118 R)
• M21: 36,842,066 km (0.039 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 477 - 17,240 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit