🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.85

Radius: 0.94

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.6 AU - 0.68 AU

Year: 336 Days

Day: 45.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 2.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 0.99 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 2 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105

Radius: 14

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 1.21 AU - 1.47 AU

Year: 1018 Days

Day: 6.1 Hours

Environment

Temp: -171 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 29,748,643 km

• M1: 174,282 km (0.111 R)
• M2: 792,121 km (0.064 R)
• M3: 2,468,664 km (0.105 R)
• M4: 3,512,708 km (0.114 R)
• M5: 4,096,887 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 464.6

Radius: 14.8

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 2.75 AU - 3.51 AU

Year: 3633 Days

Day: 13.7 Hours

Environment

Temp: -196 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,748,643 km

• M1: 184,155 km (0.074 R)
• M2: 1,260,811 km (0.078 R)
• M3: 1,850,675 km (0.092 R)
• M4: 2,520,275 km (0.057 R)
• M5: 3,155,767 km (0.092 R)
• M6: 4,183,205 km (0.099 R)
• M7: 4,775,613 km (0.104 R)
• M8: 5,575,662 km (0.112 R)
• M9: 7,076,428 km (0.086 R)
• M10: 8,487,435 km (0.093 R)
• M11: 10,349,480 km (0.067 R)
• M12: 14,424,675 km (0.106 R)
• M13: 18,990,851 km (0.078 R)
• M14: 20,068,704 km (0.082 R)
• M15: 20,747,280 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 487.2

Radius: 10.1

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 3.65 AU - 5.99 AU

Year: 6942 Days

Day: 8.7 Hours

Environment

Temp: -214 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 29,748,643 km

• M1: 154,235 km (0.112 R)
• M2: 617,091 km (0.09 R)
• M3: 1,272,779 km (0.034 R)
• M4: 1,697,786 km (0.064 R)
• M5: 3,464,088 km (0.04 R)
• M6: 4,611,055 km (0.072 R)
• M7: 5,358,745 km (0.045 R)
• M8: 6,026,101 km (0.116 R)
• M9: 6,347,288 km (0.08 R)
• M10: 7,059,224 km (0.076 R)
• M11: 8,804,433 km (0.112 R)
• M12: 11,637,667 km (0.06 R)
• M13: 12,086,760 km (0.082 R)
• M14: 13,233,428 km (0.079 R)
• M15: 13,833,315 km (0.099 R)
• M16: 14,853,872 km (0.104 R)
• M17: 16,045,868 km (0.109 R)
• M18: 18,822,853 km (0.085 R)
• M19: 19,442,188 km (0.119 R)
• M20: 20,289,062 km (0.062 R)
• M21: 25,894,943 km (0.079 R)
• M22: 26,404,174 km (0.106 R)
• M23: 26,747,351 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 484.8

Radius: 13.2

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 5.71 AU - 5.93 AU

Year: 9211 Days

Day: 9.8 Hours

Environment

Temp: -230 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 29,748,643 km

• M1: 170,093 km (0.102 R)
• M2: 763,697 km (0.086 R)
• M3: 1,572,423 km (0.063 R)
• M4: 2,204,175 km (0.066 R)
• M5: 3,411,131 km (0.114 R)
• M6: 6,435,551 km (0.116 R)
• M7: 7,011,951 km (0.099 R)
• M8: 9,171,247 km (0.12 R)
• M9: 12,605,266 km (0.055 R)
• M10: 13,279,653 km (0.091 R)
• M11: 14,276,125 km (0.059 R)
• M12: 15,575,083 km (0.095 R)
• M13: 18,336,361 km (0.061 R)
• M14: 23,526,659 km (0.114 R)
• M15: 25,959,569 km (0.108 R)
• M16: 27,703,132 km (0.066 R)
• M17: 28,460,247 km (0.115 R)
• M18: 29,328,363 km (0.082 R)
• M19: 32,038,778 km (0.102 R)
• M20: 34,584,784 km (0.101 R)
• M21: 37,034,598 km (0.109 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 282.2

Radius: 3.5

Gravity: 23.04 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 4.87 AU - 7.65 AU

Year: 10275 Days

Day: 19.1 Hours

Environment

Temp: -219 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 29,748,643 km

• M1: 43,533 km (0.073 R)
• M2: 161,117 km (0.066 R)
• M3: 1,469,201 km (0.075 R)
• M4: 1,764,208 km (0.029 R)
• M5: 3,112,384 km (0.114 R)
• M6: 3,882,065 km (0.057 R)
• M7: 4,105,414 km (0.112 R)
• M8: 5,660,484 km (0.089 R)
• M9: 6,585,747 km (0.107 R)
• M10: 6,796,381 km (0.115 R)
• M11: 7,084,207 km (0.031 R)
• M12: 8,155,926 km (0.102 R)
• M13: 8,941,764 km (0.032 R)
• M14: 9,596,853 km (0.067 R)
• M15: 9,731,641 km (0.063 R)
• M16: 10,143,484 km (0.092 R)
• M17: 10,471,851 km (0.079 R)
• M18: 11,051,094 km (0.078 R)
• M19: 11,959,452 km (0.07 R)
• M20: 12,862,126 km (0.043 R)
• M21: 13,923,672 km (0.085 R)
• M22: 21,928,804 km (0.073 R)
• M23: 22,874,562 km (0.04 R)
• M24: 25,961,065 km (0.108 R)
• M25: 31,241,271 km (0.074 R)
• M26: 33,560,038 km (0.093 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 64.2

Radius: 3.2

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 7.43 AU - 9.37 AU

Year: 15971 Days

Day: 20.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 47.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 29,748,643 km

• M1: 40,541 km (0.067 R)
• M2: 387,309 km (0.084 R)
• M3: 611,706 km (0.047 R)
• M4: 1,022,501 km (0.087 R)
• M5: 2,087,339 km (0.081 R)
• M6: 2,553,336 km (0.07 R)
• M7: 4,217,164 km (0.059 R)
• M8: 4,363,321 km (0.086 R)
• M9: 7,646,695 km (0.093 R)
• M10: 8,580,934 km (0.085 R)
• M11: 10,899,102 km (0.103 R)
• M12: 12,274,804 km (0.068 R)
• M13: 12,724,196 km (0.087 R)
• M14: 12,876,487 km (0.112 R)
• M15: 15,250,755 km (0.101 R)
• M16: 15,537,684 km (0.09 R)
• M17: 15,769,860 km (0.102 R)
• M18: 16,420,311 km (0.066 R)
• M19: 17,460,315 km (0.106 R)
• M20: 17,648,360 km (0.066 R)
• M21: 20,702,550 km (0.086 R)
• M22: 25,915,737 km (0.114 R)
• M23: 27,238,182 km (0.082 R)
• M24: 28,345,356 km (0.058 R)
• M25: 29,659,573 km (0.111 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: 467 - 15,175 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit