🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.48

Radius: 0.75

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.57 AU - 0.61 AU

Year: 288 Days

Day: 42.6 Hours

Environment

Temp: -118 °C

Axial Tilt: 26.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 464.4

Radius: 9.9

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.98 AU - 1.12 AU

Year: 684 Days

Day: 13.4 Hours

Environment

Temp: -153 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 59,113,396 km

• M1: 123,269 km (0.049 R)
• M2: 493,972 km (0.078 R)
• M3: 883,675 km (0.034 R)
• M4: 1,431,801 km (0.085 R)
• M5: 1,804,599 km (0.112 R)
• M6: 2,793,142 km (0.093 R)
• M7: 4,166,450 km (0.09 R)
• M8: 4,791,021 km (0.12 R)
• M9: 7,001,928 km (0.045 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 298.3

Radius: 8.5

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.87 AU - 1.25 AU

Year: 694 Days

Day: 11.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 59,113,396 km

• M1: 105,766 km (0.11 R)
• M2: 398,828 km (0.087 R)
• M3: 673,639 km (0.068 R)
• M4: 978,220 km (0.11 R)
• M5: 1,251,985 km (0.099 R)
• M6: 1,919,041 km (0.072 R)
• M7: 2,254,590 km (0.109 R)
• M8: 2,659,551 km (0.06 R)
• M9: 2,977,895 km (0.096 R)
• M10: 3,540,682 km (0.107 R)
• M11: 4,172,584 km (0.108 R)
• M12: 4,486,440 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 566.5

Radius: 12.4

Gravity: 3.68 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.73 AU - 2.59 AU

Year: 2018 Days

Day: 6.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 59,113,396 km

• M1: 156,479 km (0.092 R)
• M2: 699,968 km (0.086 R)
• M3: 1,314,217 km (0.054 R)
• M4: 1,828,236 km (0.1 R)
• M5: 2,372,173 km (0.077 R)
• M6: 3,382,857 km (0.105 R)
• M7: 3,807,116 km (0.114 R)
• M8: 5,233,233 km (0.077 R)
• M9: 5,733,189 km (0.094 R)
• M10: 6,855,921 km (0.073 R)
• M11: 7,372,033 km (0.05 R)
• M12: 7,768,617 km (0.033 R)
• M13: 8,179,712 km (0.082 R)
• M14: 8,667,102 km (0.058 R)
• M15: 9,633,654 km (0.092 R)
• M16: 10,814,430 km (0.066 R)
• M17: 11,934,320 km (0.089 R)
• M18: 14,891,421 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 242

Radius: 9.8

Gravity: 2.52 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 2.19 AU - 2.49 AU

Year: 2276 Days

Day: 11.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 59,113,396 km

• M1: 131,945 km (0.097 R)
• M2: 543,489 km (0.12 R)
• M3: 965,205 km (0.078 R)
• M4: 1,685,519 km (0.113 R)
• M5: 2,283,611 km (0.102 R)
• M6: 2,961,290 km (0.081 R)
• M7: 3,370,440 km (0.119 R)
• M8: 4,505,140 km (0.042 R)
• M9: 5,877,401 km (0.116 R)
• M10: 6,720,684 km (0.108 R)
• M11: 8,734,122 km (0.098 R)
• M12: 10,745,765 km (0.078 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 737.7

Radius: 14.2

Gravity: 3.66 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 3.78 AU - 5.64 AU

Year: 6499 Days

Day: 13.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 59,113,396 km

• M1: 180,864 km (0.073 R)
• M2: 844,031 km (0.106 R)
• M3: 2,303,059 km (0.082 R)
• M4: 3,655,274 km (0.099 R)
• M5: 4,310,513 km (0.06 R)
• M6: 5,246,397 km (0.106 R)
• M7: 5,763,108 km (0.082 R)
• M8: 6,585,149 km (0.089 R)
• M9: 7,673,174 km (0.117 R)
• M10: 8,260,645 km (0.093 R)
• M11: 9,350,316 km (0.104 R)
• M12: 10,159,191 km (0.1 R)
• M13: 11,063,361 km (0.093 R)
• M14: 14,684,677 km (0.075 R)
• M15: 15,346,797 km (0.074 R)
• M16: 16,345,213 km (0.06 R)
• M17: 18,610,723 km (0.097 R)
• M18: 20,405,000 km (0.107 R)
• M19: 23,187,969 km (0.085 R)
• M20: 25,093,098 km (0.084 R)
• M21: 28,189,624 km (0.081 R)
• M22: 31,039,464 km (0.046 R)
• M23: 32,030,699 km (0.109 R)
• M24: 33,868,060 km (0.085 R)
• M25: 35,238,078 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 367.2

Radius: 4.3

Gravity: 19.86 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 7.85 AU - 11.21 AU

Year: 18706 Days

Day: 21.9 Hours

Environment

Temp: -235 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 59,113,396 km

• M1: 56,249 km (0.117 R)
• M2: 212,130 km (0.066 R)
• M3: 562,338 km (0.067 R)
• M4: 772,075 km (0.114 R)
• M5: 1,115,701 km (0.12 R)
• M6: 1,406,370 km (0.075 R)
• M7: 1,569,730 km (0.062 R)
• M8: 3,776,897 km (0.039 R)
• M9: 3,919,015 km (0.098 R)
• M10: 4,982,207 km (0.068 R)
• M11: 5,839,702 km (0.085 R)
• M12: 6,343,099 km (0.095 R)
• M13: 7,044,414 km (0.106 R)
• M14: 9,046,782 km (0.096 R)
• M15: 9,826,037 km (0.119 R)
• M16: 10,705,672 km (0.082 R)
• M17: 11,999,096 km (0.068 R)
• M18: 14,403,283 km (0.117 R)
• M19: 14,821,259 km (0.102 R)
• M20: 15,318,972 km (0.11 R)
• M21: 15,901,356 km (0.114 R)
• M22: 19,286,905 km (0.114 R)
• M23: 30,405,618 km (0.075 R)
• M24: 32,856,031 km (0.088 R)
• M25: 36,195,803 km (0.085 R)
• M26: 39,213,491 km (0.111 R)
• M27: 39,483,516 km (0.096 R)
• M28: 40,301,218 km (0.078 R)
• M29: 43,251,886 km (0.066 R)
• M30: 44,266,459 km (0.078 R)
• M31: 45,297,038 km (0.103 R)
• M32: 45,594,289 km (0.074 R)
• M33: 50,053,054 km (0.087 R)
• M34: 57,012,646 km (0.083 R)
• M35: 57,881,810 km (0.056 R)
• M36: 58,583,424 km (0.065 R)
• M37: 58,936,325 km (0.091 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 447 - 20,111 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit