🌌 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: 0.56

Radius: 0.79

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.52 AU - 0.56 AU

Year: 260 Days

Day: 33.7 Hours

Environment

Temp: -111 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 48,210,101 km

• M1: 160,818 km (0.091 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.88

Radius: 0.95

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.56 AU - 0.6 AU

Year: 290 Days

Day: 26 Hours

Environment

Temp: -127 °C

Axial Tilt: 11.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 649.2

Radius: 11.2

Gravity: 5.18 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.63 AU - 1.03 AU

Year: 496 Days

Day: 6.6 Hours

Environment

Temp: -139 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 48,210,101 km

• M1: 140,024 km (0.059 R)
• M2: 558,449 km (0.097 R)
• M3: 1,409,661 km (0.107 R)
• M4: 2,042,909 km (0.072 R)
• M5: 4,121,421 km (0.092 R)
• M6: 4,478,063 km (0.08 R)
• M7: 5,657,043 km (0.042 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 585.8

Radius: 11.6

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.84 AU - 1.32 AU

Year: 736 Days

Day: 11.7 Hours

Environment

Temp: -164 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 48,210,101 km

• M1: 144,212 km (0.068 R)
• M2: 568,173 km (0.055 R)
• M3: 1,131,259 km (0.035 R)
• M4: 1,574,817 km (0.104 R)
• M5: 2,153,761 km (0.111 R)
• M6: 3,350,394 km (0.119 R)
• M7: 4,713,380 km (0.111 R)
• M8: 5,118,790 km (0.04 R)
• M9: 6,355,815 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 655.3

Radius: 11.4

Gravity: 5.04 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.06 AU - 1.56 AU

Year: 984 Days

Day: 8 Hours

Environment

Temp: -177 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 48,210,101 km

• M1: 141,968 km (0.114 R)
• M2: 498,311 km (0.085 R)
• M3: 866,471 km (0.067 R)
• M4: 1,765,704 km (0.111 R)
• M5: 2,866,594 km (0.099 R)
• M6: 3,387,045 km (0.084 R)
• M7: 4,065,472 km (0.103 R)
• M8: 4,583,828 km (0.092 R)
• M9: 5,572,521 km (0.074 R)
• M10: 6,278,174 km (0.083 R)
• M11: 6,949,569 km (0.064 R)
• M12: 7,374,876 km (0.063 R)
• M13: 7,817,686 km (0.059 R)
• M14: 8,200,058 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 612.3

Radius: 13.5

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 1.48 AU - 1.64 AU

Year: 1278 Days

Day: 11.5 Hours

Environment

Temp: -179 °C

Axial Tilt: 158 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 48,210,101 km

• M1: 167,849 km (0.071 R)
• M2: 638,035 km (0.113 R)
• M3: 1,079,648 km (0.08 R)
• M4: 1,510,041 km (0.054 R)
• M5: 2,068,340 km (0.106 R)
• M6: 2,600,460 km (0.101 R)
• M7: 4,061,433 km (0.075 R)
• M8: 4,586,970 km (0.083 R)
• M9: 5,992,442 km (0.104 R)
• M10: 6,628,981 km (0.09 R)
• M11: 8,870,406 km (0.051 R)
• M12: 9,486,899 km (0.114 R)
• M13: 10,545,603 km (0.065 R)
• M14: 11,271,751 km (0.078 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 60.6

Radius: 4.8

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 7.72 AU - 9.76 AU

Year: 16950 Days

Day: 16.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 48,210,101 km

• M1: 59,690 km (0.084 R)
• M2: 211,232 km (0.102 R)
• M3: 409,449 km (0.059 R)
• M4: 580,141 km (0.04 R)
• M5: 911,051 km (0.118 R)
• M6: 1,392,607 km (0.113 R)
• M7: 1,871,170 km (0.031 R)
• M8: 2,102,748 km (0.096 R)
• M9: 3,266,470 km (0.106 R)
• M10: 4,320,536 km (0.071 R)
• M11: 4,674,036 km (0.119 R)
• M12: 5,019,308 km (0.112 R)
• M13: 6,220,279 km (0.099 R)
• M14: 6,971,859 km (0.073 R)
• M15: 13,679,678 km (0.081 R)
• M16: 15,343,506 km (0.105 R)
• M17: 17,199,566 km (0.117 R)
• M18: 19,000,126 km (0.094 R)
• M19: 23,579,616 km (0.108 R)
• M20: 24,043,370 km (0.095 R)
• M21: 25,148,898 km (0.07 R)
• M22: 27,375,962 km (0.108 R)
• M23: 27,802,315 km (0.06 R)
• M24: 30,181,520 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 176.9

Radius: 3.7

Gravity: 12.92 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 9.03 AU - 10.39 AU

Year: 19849 Days

Day: 20.7 Hours

Environment

Temp: -231 °C

Axial Tilt: 136.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 48,210,101 km

• M1: 87,365 km (0.118 R)
• M2: 594,652 km (0.072 R)
• M3: 863,629 km (0.054 R)
• M4: 1,092,064 km (0.12 R)
• M5: 1,745,658 km (0.106 R)
• M6: 1,872,965 km (0.11 R)
• M7: 2,219,135 km (0.12 R)
• M8: 2,606,294 km (0.102 R)
• M9: 2,752,002 km (0.074 R)
• M10: 2,881,105 km (0.084 R)
• M11: 3,059,725 km (0.082 R)
• M12: 4,826,476 km (0.058 R)
• M13: 7,135,669 km (0.089 R)
• M14: 9,012,673 km (0.114 R)
• M15: 9,346,576 km (0.106 R)
• M16: 11,194,857 km (0.055 R)
• M17: 13,704,960 km (0.105 R)
• M18: 16,922,810 km (0.095 R)
• M19: 17,948,304 km (0.081 R)
• M20: 18,937,146 km (0.05 R)
• M21: 19,881,407 km (0.112 R)
• M22: 24,798,689 km (0.06 R)
• M23: 30,149,805 km (0.057 R)
• M24: 37,550,861 km (0.058 R)
• M25: 42,791,873 km (0.119 R)
• M26: 44,276,482 km (0.091 R)
• M27: 48,065,796 km (0.044 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: 178 - 18,574 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit