🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.76

Radius: 0.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.52 AU - 0.7 AU

Year: 303 Days

Day: 31.3 Hours

Environment

Temp: -139 °C

Axial Tilt: 23 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,130,800 km

• M1: 22,140 km (0.089 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.2

Radius: 10.6

Gravity: 5.27 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.89 AU - 1.03 AU

Year: 598 Days

Day: 13.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 61,130,800 km

• M1: 132,693 km (0.09 R)
• M2: 484,548 km (0.066 R)
• M3: 1,024,745 km (0.103 R)
• M4: 1,788,443 km (0.111 R)
• M5: 2,238,882 km (0.103 R)
• M6: 2,987,619 km (0.115 R)
• M7: 3,333,340 km (0.112 R)
• M8: 4,077,739 km (0.08 R)
• M9: 4,414,035 km (0.108 R)
• M10: 4,929,250 km (0.085 R)
• M11: 6,231,350 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.2

Radius: 11.2

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 1 AU - 1.32 AU

Year: 794 Days

Day: 12.8 Hours

Environment

Temp: -170 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 61,130,800 km

• M1: 139,276 km (0.06 R)
• M2: 551,418 km (0.111 R)
• M3: 934,837 km (0.084 R)
• M4: 1,702,274 km (0.032 R)
• M5: 2,376,512 km (0.105 R)
• M6: 2,755,294 km (0.065 R)
• M7: 3,375,826 km (0.108 R)
• M8: 3,726,333 km (0.081 R)
• M9: 4,635,589 km (0.049 R)
• M10: 5,216,029 km (0.051 R)
• M11: 6,131,269 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 869.8

Radius: 12.6

Gravity: 5.48 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 2.16 AU - 2.6 AU

Year: 2335 Days

Day: 9.1 Hours

Environment

Temp: -198 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 61,130,800 km

• M1: 156,629 km (0.054 R)
• M2: 673,340 km (0.056 R)
• M3: 1,075,160 km (0.096 R)
• M4: 1,472,941 km (0.074 R)
• M5: 3,046,710 km (0.113 R)
• M6: 4,373,643 km (0.116 R)
• M7: 5,038,307 km (0.108 R)
• M8: 5,769,391 km (0.056 R)
• M9: 6,654,113 km (0.069 R)
• M10: 7,565,613 km (0.093 R)
• M11: 9,350,017 km (0.098 R)
• M12: 10,455,096 km (0.086 R)
• M13: 11,079,069 km (0.106 R)
• M14: 11,727,875 km (0.058 R)
• M15: 13,506,145 km (0.116 R)
• M16: 14,246,804 km (0.074 R)
• M17: 14,675,252 km (0.089 R)
• M18: 19,504,122 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 80.7

Radius: 11.6

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 2.17 AU - 2.73 AU

Year: 2438 Days

Day: 6.7 Hours

Environment

Temp: -202 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 61,130,800 km

• M1: 144,212 km (0.089 R)
• M2: 561,890 km (0.115 R)
• M3: 1,174,044 km (0.117 R)
• M4: 1,780,963 km (0.045 R)
• M5: 2,243,968 km (0.083 R)
• M6: 3,161,452 km (0.11 R)
• M7: 6,027,149 km (0.098 R)
• M8: 6,924,137 km (0.086 R)
• M9: 7,617,823 km (0.068 R)
• M10: 8,256,007 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704

Radius: 10.8

Gravity: 6.04 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 2.41 AU - 3.73 AU

Year: 3420 Days

Day: 11.2 Hours

Environment

Temp: -201 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 61,130,800 km

• M1: 134,339 km (0.084 R)
• M2: 497,413 km (0.069 R)
• M3: 1,108,670 km (0.102 R)
• M4: 1,540,409 km (0.076 R)
• M5: 2,394,164 km (0.043 R)
• M6: 2,867,941 km (0.112 R)
• M7: 5,189,849 km (0.047 R)
• M8: 6,157,149 km (0.114 R)
• M9: 7,628,893 km (0.114 R)
• M10: 8,271,865 km (0.096 R)
• M11: 10,137,500 km (0.095 R)
• M12: 13,927,263 km (0.114 R)
• M13: 15,358,316 km (0.066 R)
• M14: 18,153,851 km (0.12 R)
• M15: 18,993,694 km (0.082 R)
• M16: 22,682,628 km (0.059 R)

Asteroid Belt

Center: 4.76 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 6.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 502.8

Radius: 4.4

Gravity: 25.97 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 6.38 AU - 6.5 AU

Year: 10391 Days

Day: 21 Hours

Environment

Temp: -228 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 61,130,800 km

• M1: 54,753 km (0.117 R)
• M2: 296,204 km (0.075 R)
• M3: 526,435 km (0.081 R)
• M4: 888,611 km (0.043 R)
• M5: 1,058,854 km (0.102 R)
• M6: 1,349,223 km (0.057 R)
• M7: 2,466,570 km (0.109 R)
• M8: 2,764,419 km (0.072 R)
• M9: 4,367,061 km (0.057 R)
• M10: 5,726,606 km (0.066 R)
• M11: 7,226,475 km (0.086 R)
• M12: 7,506,522 km (0.09 R)
• M13: 7,752,162 km (0.094 R)
• M14: 9,720,271 km (0.049 R)
• M15: 10,259,871 km (0.1 R)
• M16: 11,506,171 km (0.103 R)
• M17: 11,887,795 km (0.06 R)
• M18: 13,680,127 km (0.052 R)
• M19: 14,419,888 km (0.107 R)
• M20: 20,757,303 km (0.109 R)
• M21: 21,404,314 km (0.103 R)
• M22: 22,994,390 km (0.074 R)
• M23: 23,338,913 km (0.073 R)
• M24: 23,686,878 km (0.101 R)
• M25: 24,751,417 km (0.088 R)
• M26: 30,556,263 km (0.075 R)
• M27: 30,972,743 km (0.092 R)
• M28: 32,676,214 km (0.11 R)
• M29: 35,232,842 km (0.051 R)
• M30: 36,268,657 km (0.075 R)
• M31: 40,489,561 km (0.068 R)
• M32: 41,753,065 km (0.062 R)
• M33: 42,523,644 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 508.8

Radius: 4.4

Gravity: 26.28 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 7.92 AU - 9.76 AU

Year: 16711 Days

Day: 22 Hours

Environment

Temp: -232 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 61,130,800 km

• M1: 233,373 km (0.117 R)
• M2: 473,627 km (0.119 R)
• M3: 964,009 km (0.116 R)
• M4: 1,230,293 km (0.112 R)
• M5: 1,409,810 km (0.094 R)
• M6: 2,310,090 km (0.087 R)
• M7: 3,876,230 km (0.118 R)
• M8: 7,284,369 km (0.083 R)
• M9: 9,618,694 km (0.12 R)
• M10: 10,838,216 km (0.105 R)
• M11: 11,246,918 km (0.11 R)
• M12: 14,681,385 km (0.073 R)
• M13: 16,905,307 km (0.053 R)
• M14: 17,454,631 km (0.119 R)
• M15: 18,424,175 km (0.076 R)
• M16: 22,473,340 km (0.112 R)
• M17: 28,046,758 km (0.112 R)
• M18: 29,599,435 km (0.05 R)
• M19: 36,643,998 km (0.082 R)
• M20: 37,563,128 km (0.109 R)
• M21: 40,412,369 km (0.102 R)
• M22: 47,150,257 km (0.118 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 452 - 16,099 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit