🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.89

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.51 AU - 0.57 AU

Year: 260 Days

Day: 33.6 Hours

Environment

Temp: -117 °C

Axial Tilt: 1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 38,949,743 km

• M1: 181,163 km (0.115 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.54

Radius: 0.78

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.57 AU - 0.61 AU

Year: 297 Days

Day: 31 Hours

Environment

Temp: -119 °C

Axial Tilt: 3.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 38,949,743 km

• M1: 18,251 km (0.075 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 84.2

Radius: 11.1

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.6 AU - 0.94 AU

Year: 443 Days

Day: 7 Hours

Environment

Temp: -154 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 38,949,743 km

• M1: 138,079 km (0.071 R)
• M2: 487,539 km (0.11 R)
• M3: 866,920 km (0.1 R)
• M4: 1,422,676 km (0.042 R)
• M5: 1,892,563 km (0.086 R)
• M6: 2,304,705 km (0.097 R)
• M7: 2,752,451 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278.4

Radius: 10.3

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.76 AU - 0.78 AU

Year: 443 Days

Day: 12 Hours

Environment

Temp: -142 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 38,949,743 km

• M1: 128,056 km (0.115 R)
• M2: 711,188 km (0.097 R)
• M3: 1,680,433 km (0.067 R)
• M4: 2,249,354 km (0.108 R)
• M5: 2,633,371 km (0.114 R)
• M6: 3,091,290 km (0.11 R)
• M7: 3,715,263 km (0.094 R)
• M8: 4,069,810 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 573.2

Radius: 10.3

Gravity: 5.4 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 2.92 AU - 3.34 AU

Year: 3633 Days

Day: 8.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 38,949,743 km

• M1: 128,056 km (0.075 R)
• M2: 573,259 km (0.088 R)
• M3: 934,987 km (0.092 R)
• M4: 1,258,417 km (0.047 R)
• M5: 1,681,181 km (0.093 R)
• M6: 2,116,211 km (0.119 R)
• M7: 2,918,505 km (0.041 R)
• M8: 5,499,517 km (0.033 R)
• M9: 6,179,140 km (0.029 R)
• M10: 7,192,366 km (0.092 R)
• M11: 7,771,909 km (0.101 R)
• M12: 9,282,548 km (0.118 R)
• M13: 10,008,995 km (0.116 R)
• M14: 12,922,264 km (0.108 R)
• M15: 16,854,594 km (0.097 R)
• M16: 17,935,139 km (0.09 R)
• M17: 18,285,946 km (0.111 R)
• M18: 20,742,044 km (0.038 R)
• M19: 22,115,951 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 846.1

Radius: 12.1

Gravity: 5.78 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 4.64 AU - 5.24 AU

Year: 7203 Days

Day: 8.1 Hours

Environment

Temp: -210 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 38,949,743 km

• M1: 150,495 km (0.095 R)
• M2: 559,646 km (0.111 R)
• M3: 1,413,101 km (0.066 R)
• M4: 2,202,380 km (0.072 R)
• M5: 2,967,573 km (0.065 R)
• M6: 3,705,988 km (0.049 R)
• M7: 4,563,184 km (0.085 R)
• M8: 5,939,933 km (0.062 R)
• M9: 6,420,292 km (0.071 R)
• M10: 6,926,381 km (0.103 R)
• M11: 7,381,309 km (0.053 R)
• M12: 8,019,044 km (0.111 R)
• M13: 8,736,516 km (0.085 R)
• M14: 9,542,250 km (0.1 R)
• M15: 10,742,922 km (0.068 R)
• M16: 11,405,790 km (0.1 R)
• M17: 12,423,654 km (0.063 R)
• M18: 15,137,659 km (0.106 R)
• M19: 16,102,266 km (0.085 R)
• M20: 21,152,690 km (0.084 R)
• M21: 21,789,977 km (0.097 R)
• M22: 23,270,547 km (0.056 R)
• M23: 23,949,572 km (0.113 R)
• M24: 28,593,987 km (0.108 R)
• M25: 31,692,459 km (0.049 R)
• M26: 32,632,382 km (0.091 R)
• M27: 33,806,426 km (0.111 R)
• M28: 36,921,502 km (0.08 R)
• M29: 37,381,516 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 196.1

Radius: 4.3

Gravity: 10.61 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 7.52 AU - 7.64 AU

Year: 13690 Days

Day: 22.8 Hours

Environment

Temp: -216 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 38,949,743 km

• M1: 53,706 km (0.11 R)
• M2: 254,915 km (0.096 R)
• M3: 1,292,526 km (0.117 R)
• M4: 1,913,955 km (0.106 R)
• M5: 2,137,604 km (0.119 R)
• M6: 2,599,263 km (0.079 R)
• M7: 2,753,947 km (0.101 R)
• M8: 8,752,523 km (0.064 R)
• M9: 10,393,910 km (0.103 R)
• M10: 14,753,641 km (0.115 R)
• M11: 17,672,894 km (0.102 R)
• M12: 20,571,802 km (0.086 R)
• M13: 22,053,569 km (0.041 R)
• M14: 23,856,372 km (0.08 R)
• M15: 24,880,071 km (0.09 R)
• M16: 25,402,766 km (0.113 R)
• M17: 25,578,543 km (0.054 R)
• M18: 26,650,711 km (0.092 R)
• M19: 27,197,790 km (0.104 R)
• M20: 32,360,114 km (0.09 R)
• M21: 32,982,740 km (0.096 R)
• M22: 35,552,981 km (0.079 R)
• M23: 35,993,996 km (0.11 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: 394 - 12,331 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit