🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.88

Radius: 0.95

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.46 AU - 0.59 AU

Year: 242 Days

Day: 18.8 Hours

Environment

Temp: -114 °C

Axial Tilt: 33.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.77

Radius: 1.26

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.53 AU - 0.71 AU

Year: 315 Days

Day: 24.9 Hours

Environment

Temp: -131 °C

Axial Tilt: 14.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 827.6

Radius: 14.9

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.81 AU - 0.89 AU

Year: 506 Days

Day: 14.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 58,243,846 km

• M1: 185,352 km (0.05 R)
• M2: 674,686 km (0.096 R)
• M3: 1,328,878 km (0.067 R)
• M4: 2,157,800 km (0.106 R)
• M5: 3,838,681 km (0.09 R)
• M6: 4,390,099 km (0.072 R)
• M7: 5,325,535 km (0.072 R)
• M8: 5,814,271 km (0.072 R)
• M9: 6,409,521 km (0.06 R)
• M10: 6,902,745 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 134.1

Radius: 10.9

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.75 AU - 1.13 AU

Year: 588 Days

Day: 10.6 Hours

Environment

Temp: -165 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 58,243,846 km

• M1: 135,685 km (0.109 R)
• M2: 506,838 km (0.116 R)
• M3: 1,224,010 km (0.056 R)
• M4: 2,076,867 km (0.119 R)
• M5: 2,727,618 km (0.12 R)
• M6: 3,156,066 km (0.119 R)
• M7: 3,531,108 km (0.11 R)
• M8: 4,089,707 km (0.065 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 479.6

Radius: 9

Gravity: 5.92 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 2 AU - 2.08 AU

Year: 1881 Days

Day: 7.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 58,243,846 km

• M1: 111,899 km (0.076 R)
• M2: 726,896 km (0.044 R)
• M3: 1,032,824 km (0.119 R)
• M4: 1,703,172 km (0.103 R)
• M5: 2,016,430 km (0.086 R)
• M6: 2,468,963 km (0.096 R)
• M7: 2,858,815 km (0.119 R)
• M8: 3,644,653 km (0.082 R)
• M9: 4,188,591 km (0.098 R)
• M10: 4,567,672 km (0.067 R)
• M11: 6,101,648 km (0.108 R)
• M12: 6,920,846 km (0.093 R)
• M13: 7,397,465 km (0.103 R)
• M14: 8,153,533 km (0.068 R)
• M15: 8,446,296 km (0.077 R)
• M16: 9,240,511 km (0.051 R)
• M17: 11,997,300 km (0.08 R)
• M18: 12,842,379 km (0.108 R)
• M19: 13,199,319 km (0.064 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 783.4

Radius: 5.9

Gravity: 22.51 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 6.24 AU - 9.26 AU

Year: 13931 Days

Day: 19.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 58,243,846 km

• M1: 73,303 km (0.118 R)
• M2: 259,852 km (0.119 R)
• M3: 1,025,942 km (0.108 R)
• M4: 1,302,549 km (0.076 R)
• M5: 1,534,276 km (0.069 R)
• M6: 2,177,846 km (0.113 R)
• M7: 2,506,363 km (0.109 R)
• M8: 3,473,214 km (0.112 R)
• M9: 4,160,766 km (0.103 R)
• M10: 4,969,641 km (0.097 R)
• M11: 5,284,994 km (0.111 R)
• M12: 6,073,075 km (0.065 R)
• M13: 6,433,756 km (0.071 R)
• M14: 7,286,463 km (0.117 R)
• M15: 8,455,272 km (0.064 R)
• M16: 9,370,811 km (0.118 R)
• M17: 9,690,052 km (0.027 R)
• M18: 12,195,218 km (0.109 R)
• M19: 12,448,188 km (0.107 R)
• M20: 12,899,376 km (0.087 R)
• M21: 13,361,334 km (0.11 R)
• M22: 14,388,174 km (0.115 R)
• M23: 14,599,855 km (0.088 R)
• M24: 14,956,945 km (0.119 R)
• M25: 15,466,774 km (0.079 R)
• M26: 15,913,025 km (0.096 R)
• M27: 20,588,856 km (0.054 R)
• M28: 26,000,260 km (0.113 R)
• M29: 27,922,592 km (0.108 R)
• M30: 28,918,465 km (0.114 R)
• M31: 29,142,862 km (0.062 R)
• M32: 30,863,686 km (0.079 R)
• M33: 34,506,394 km (0.086 R)
• M34: 39,656,750 km (0.068 R)
• M35: 40,491,955 km (0.081 R)
• M36: 42,776,614 km (0.097 R)
• M37: 46,824,283 km (0.087 R)
• M38: 49,179,851 km (0.115 R)
• M39: 51,448,353 km (0.027 R)
• M40: 54,808,770 km (0.12 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 597.9

Radius: 5.4

Gravity: 20.5 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 6.97 AU - 8.83 AU

Year: 14337 Days

Day: 21.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 58,243,846 km

• M1: 67,319 km (0.086 R)
• M2: 412,142 km (0.09 R)
• M3: 613,650 km (0.096 R)
• M4: 1,545,496 km (0.096 R)
• M5: 2,333,577 km (0.1 R)
• M6: 2,648,032 km (0.059 R)
• M7: 3,013,948 km (0.1 R)
• M8: 3,184,490 km (0.105 R)
• M9: 3,598,427 km (0.077 R)
• M10: 8,876,240 km (0.096 R)
• M11: 11,418,057 km (0.109 R)
• M12: 17,021,844 km (0.089 R)
• M13: 20,365,805 km (0.089 R)
• M14: 23,641,699 km (0.068 R)
• M15: 26,938,388 km (0.107 R)
• M16: 27,887,885 km (0.11 R)
• M17: 28,968,880 km (0.115 R)
• M18: 32,853,188 km (0.06 R)
• M19: 36,684,839 km (0.114 R)
• M20: 39,712,999 km (0.067 R)
• M21: 48,233,794 km (0.107 R)
• M22: 56,858,710 km (0.119 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: 198 - 13,848 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit