🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.25

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.52 AU - 0.68 AU

Year: 300 Days

Day: 27.4 Hours

Environment

Temp: -122 °C

Axial Tilt: 49.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.72

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.51 AU - 0.75 AU

Year: 323 Days

Day: 46.4 Hours

Environment

Temp: -126 °C

Axial Tilt: 21.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.4

Radius: 14.8

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.88 AU - 1.08 AU

Year: 626 Days

Day: 10.4 Hours

Environment

Temp: -148 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 54,748,263 km

• M1: 185,053 km (0.093 R)
• M2: 690,693 km (0.082 R)
• M3: 1,189,602 km (0.113 R)
• M4: 2,725,972 km (0.089 R)
• M5: 3,218,598 km (0.111 R)
• M6: 3,743,986 km (0.088 R)
• M7: 4,252,469 km (0.034 R)
• M8: 5,254,924 km (0.092 R)
• M9: 6,007,252 km (0.041 R)
• M10: 7,058,177 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 757.8

Radius: 8.1

Gravity: 11.55 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 1.28 AU - 1.58 AU

Year: 1104 Days

Day: 7.1 Hours

Environment

Temp: -167 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 54,748,263 km

• M1: 100,679 km (0.058 R)
• M2: 376,538 km (0.05 R)
• M3: 664,364 km (0.034 R)
• M4: 1,574,518 km (0.07 R)
• M5: 1,852,022 km (0.037 R)
• M6: 2,364,843 km (0.099 R)
• M7: 2,680,195 km (0.039 R)
• M8: 3,121,210 km (0.032 R)
• M9: 3,625,355 km (0.112 R)
• M10: 4,199,811 km (0.103 R)
• M11: 4,481,952 km (0.036 R)
• M12: 4,833,507 km (0.043 R)
• M13: 5,487,998 km (0.083 R)
• M14: 6,637,358 km (0.089 R)
• M15: 9,433,791 km (0.083 R)
• M16: 9,735,530 km (0.086 R)
• M17: 10,326,442 km (0.087 R)
• M18: 10,875,316 km (0.048 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 872.6

Radius: 7.3

Gravity: 16.37 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 6 AU - 9.6 AU

Year: 14066 Days

Day: 16.1 Hours

Environment

Temp: -223 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 54,748,263 km

• M1: 90,806 km (0.115 R)
• M2: 394,190 km (0.103 R)
• M3: 793,916 km (0.102 R)
• M4: 1,037,012 km (0.095 R)
• M5: 1,460,374 km (0.099 R)
• M6: 1,884,933 km (0.117 R)
• M7: 2,606,145 km (0.12 R)
• M8: 3,498,496 km (0.081 R)
• M9: 8,331,255 km (0.082 R)
• M10: 9,197,127 km (0.091 R)
• M11: 9,462,813 km (0.105 R)
• M12: 10,177,891 km (0.105 R)
• M13: 11,591,591 km (0.107 R)
• M14: 16,848,460 km (0.084 R)
• M15: 18,818,066 km (0.067 R)
• M16: 20,302,675 km (0.112 R)
• M17: 21,211,632 km (0.069 R)
• M18: 21,676,133 km (0.111 R)
• M19: 22,433,547 km (0.118 R)
• M20: 27,681,440 km (0.071 R)
• M21: 28,685,242 km (0.058 R)
• M22: 34,452,539 km (0.118 R)
• M23: 36,934,069 km (0.069 R)
• M24: 41,090,795 km (0.09 R)
• M25: 58,082,570 km (0.074 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 361.2

Radius: 4.4

Gravity: 18.66 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 6.85 AU - 9.23 AU

Year: 14720 Days

Day: 23.3 Hours

Environment

Temp: -225 °C

Axial Tilt: 86.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 54,748,263 km

• M1: 54,902 km (0.104 R)
• M2: 220,358 km (0.104 R)
• M3: 809,025 km (0.113 R)
• M4: 954,883 km (0.118 R)
• M5: 1,288,187 km (0.074 R)
• M6: 1,474,885 km (0.096 R)
• M7: 2,092,276 km (0.055 R)
• M8: 2,508,756 km (0.092 R)
• M9: 3,282,327 km (0.082 R)
• M10: 3,684,296 km (0.11 R)
• M11: 3,979,154 km (0.047 R)
• M12: 4,318,591 km (0.094 R)
• M13: 4,585,624 km (0.096 R)
• M14: 5,022,749 km (0.08 R)
• M15: 5,453,142 km (0.106 R)
• M16: 5,694,742 km (0.069 R)
• M17: 6,125,734 km (0.069 R)
• M18: 7,297,833 km (0.099 R)
• M19: 8,751,326 km (0.041 R)
• M20: 11,926,541 km (0.052 R)
• M21: 14,314,871 km (0.065 R)
• M22: 16,498,102 km (0.12 R)
• M23: 23,808,202 km (0.077 R)
• M24: 24,267,916 km (0.066 R)
• M25: 26,952,450 km (0.087 R)
• M26: 27,957,299 km (0.104 R)
• M27: 35,939,692 km (0.088 R)
• M28: 36,180,843 km (0.079 R)
• M29: 43,788,643 km (0.085 R)
• M30: 44,063,604 km (0.05 R)
• M31: 44,339,911 km (0.034 R)
• M32: 45,738,203 km (0.103 R)
• M33: 47,890,467 km (0.095 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 273.3

Radius: 5.6

Gravity: 8.71 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 8.93 AU - 10.35 AU

Year: 19326 Days

Day: 18.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 54,748,263 km

• M1: 88,412 km (0.061 R)
• M2: 726,298 km (0.102 R)
• M3: 955,182 km (0.082 R)
• M4: 1,308,981 km (0.094 R)
• M5: 1,531,284 km (0.117 R)
• M6: 3,046,411 km (0.099 R)
• M7: 3,675,171 km (0.114 R)
• M8: 7,237,844 km (0.113 R)
• M9: 10,036,671 km (0.106 R)
• M10: 15,294,587 km (0.032 R)
• M11: 15,789,457 km (0.073 R)
• M12: 18,744,164 km (0.101 R)
• M13: 22,770,142 km (0.065 R)
• M14: 29,235,912 km (0.078 R)
• M15: 35,458,435 km (0.116 R)
• M16: 37,713,922 km (0.085 R)
• M17: 43,205,062 km (0.054 R)
• M18: 53,608,098 km (0.108 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: 339 - 15,529 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit