🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.26

Radius: 1.1

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.53 AU - 0.59 AU

Year: 275 Days

Day: 14.4 Hours

Environment

Temp: -128 °C

Axial Tilt: 51.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 483.5

Radius: 12.4

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.64 AU - 0.84 AU

Year: 418 Days

Day: 7.3 Hours

Environment

Temp: -134 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 35,109,573 km

• M1: 154,684 km (0.088 R)
• M2: 578,645 km (0.086 R)
• M3: 1,136,495 km (0.077 R)
• M4: 1,522,607 km (0.115 R)
• M5: 2,060,860 km (0.1 R)
• M6: 2,473,601 km (0.07 R)
• M7: 3,480,843 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 361.6

Radius: 8.6

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.97 AU - 1.47 AU

Year: 884 Days

Day: 9.4 Hours

Environment

Temp: -178 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 35,109,573 km

• M1: 109,506 km (0.101 R)
• M2: 522,845 km (0.113 R)
• M3: 934,837 km (0.082 R)
• M4: 1,510,789 km (0.092 R)
• M5: 2,469,562 km (0.082 R)
• M6: 3,007,665 km (0.072 R)
• M7: 3,554,146 km (0.12 R)
• M8: 4,240,800 km (0.118 R)
• M9: 5,361,288 km (0.102 R)
• M10: 5,651,508 km (0.118 R)
• M11: 6,383,042 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 593.1

Radius: 10.3

Gravity: 5.59 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 1.21 AU - 1.53 AU

Year: 1052 Days

Day: 13.8 Hours

Environment

Temp: -169 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 35,109,573 km

• M1: 128,056 km (0.093 R)
• M2: 533,765 km (0.099 R)
• M3: 910,752 km (0.069 R)
• M4: 1,377,198 km (0.034 R)
• M5: 1,764,357 km (0.119 R)
• M6: 2,120,101 km (0.077 R)
• M7: 2,677,802 km (0.082 R)
• M8: 3,137,965 km (0.05 R)
• M9: 3,517,345 km (0.1 R)
• M10: 3,911,536 km (0.113 R)
• M11: 4,681,665 km (0.032 R)
• M12: 7,505,325 km (0.103 R)
• M13: 8,032,658 km (0.041 R)
• M14: 8,638,379 km (0.036 R)
• M15: 9,502,756 km (0.073 R)
• M16: 9,941,227 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 658.8

Radius: 10.1

Gravity: 6.46 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 2.15 AU - 2.41 AU

Year: 2258 Days

Day: 10.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 35,109,573 km

• M1: 125,662 km (0.056 R)
• M2: 624,721 km (0.116 R)
• M3: 1,158,935 km (0.063 R)
• M4: 1,559,558 km (0.108 R)
• M5: 2,137,754 km (0.114 R)
• M6: 2,575,178 km (0.117 R)
• M7: 2,914,765 km (0.113 R)
• M8: 6,440,188 km (0.084 R)
• M9: 7,445,785 km (0.107 R)
• M10: 8,234,914 km (0.113 R)
• M11: 8,585,123 km (0.086 R)
• M12: 8,912,144 km (0.078 R)
• M13: 10,195,095 km (0.065 R)
• M14: 10,636,708 km (0.114 R)
• M15: 11,052,440 km (0.105 R)
• M16: 11,796,390 km (0.039 R)
• M17: 12,160,213 km (0.043 R)
• M18: 13,558,953 km (0.099 R)
• M19: 14,093,167 km (0.025 R)
• M20: 14,920,892 km (0.059 R)
• M21: 16,723,845 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 983.8

Radius: 13.4

Gravity: 5.48 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 4.72 AU - 6.96 AU

Year: 9258 Days

Day: 8.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 35,109,573 km

• M1: 166,802 km (0.101 R)
• M2: 765,642 km (0.088 R)
• M3: 1,302,848 km (0.094 R)
• M4: 1,751,941 km (0.116 R)
• M5: 2,306,051 km (0.038 R)
• M6: 2,781,473 km (0.036 R)
• M7: 4,014,758 km (0.114 R)
• M8: 4,588,316 km (0.084 R)
• M9: 5,972,246 km (0.112 R)
• M10: 7,533,898 km (0.095 R)
• M11: 8,274,557 km (0.077 R)
• M12: 9,015,366 km (0.097 R)
• M13: 11,171,819 km (0.05 R)
• M14: 11,732,213 km (0.109 R)
• M15: 12,194,022 km (0.053 R)
• M16: 12,788,224 km (0.083 R)
• M17: 14,099,450 km (0.1 R)
• M18: 21,084,922 km (0.074 R)
• M19: 21,855,351 km (0.063 R)
• M20: 26,978,031 km (0.115 R)
• M21: 27,886,240 km (0.116 R)
• M22: 33,885,414 km (0.082 R)
• M23: 36,264,618 km (0.085 R)
• M24: 40,430,769 km (0.081 R)
• M25: 42,156,231 km (0.059 R)
• M26: 43,379,044 km (0.11 R)
• M27: 44,346,494 km (0.111 R)
• M28: 50,607,613 km (0.041 R)
• M29: 51,218,272 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 204.3

Radius: 7.3

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 5.91 AU - 7.57 AU

Year: 11479 Days

Day: 20.9 Hours

Environment

Temp: -227 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,109,573 km

• M1: 90,806 km (0.078 R)
• M2: 392,545 km (0.045 R)
• M3: 1,793,678 km (0.089 R)
• M4: 3,260,635 km (0.103 R)
• M5: 4,681,665 km (0.079 R)
• M6: 5,917,045 km (0.04 R)
• M7: 10,576,121 km (0.061 R)
• M8: 14,805,252 km (0.05 R)
• M9: 16,581,578 km (0.05 R)
• M10: 19,469,714 km (0.119 R)
• M11: 20,405,000 km (0.07 R)
• M12: 20,995,164 km (0.118 R)
• M13: 29,269,721 km (0.055 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 390 - 17,942 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit