🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.17

Radius: 0.49

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.49 AU - 0.63 AU

Year: 275 Days

Day: 16.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 35.3 °

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: 0.46

Radius: 0.73

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.48 AU - 0.78 AU

Year: 328 Days

Day: 35.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 37.7 °

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: 954.6

Radius: 10.2

Gravity: 9.18 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.79 AU - 0.87 AU

Year: 496 Days

Day: 5.4 Hours

Environment

Temp: -150 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 22,574,885 km

• M1: 127,009 km (0.05 R)
• M2: 472,131 km (0.088 R)
• M3: 809,025 km (0.112 R)
• M4: 1,282,802 km (0.07 R)
• M5: 1,607,728 km (0.109 R)
• M6: 2,923,591 km (0.094 R)
• M7: 3,575,090 km (0.106 R)
• M8: 3,985,287 km (0.1 R)
• M9: 5,032,472 km (0.111 R)
• M10: 5,838,805 km (0.082 R)
• M11: 6,729,062 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.2

Radius: 8

Gravity: 14.36 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.67 AU - 1.01 AU

Year: 505 Days

Day: 11.2 Hours

Environment

Temp: -152 °C

Axial Tilt: 49.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 22,574,885 km

• M1: 100,530 km (0.08 R)
• M2: 372,200 km (0.116 R)
• M3: 661,971 km (0.101 R)
• M4: 1,083,986 km (0.11 R)
• M5: 1,337,255 km (0.09 R)
• M6: 1,897,948 km (0.108 R)
• M7: 2,271,045 km (0.04 R)
• M8: 2,606,444 km (0.116 R)
• M9: 2,939,897 km (0.072 R)
• M10: 3,276,493 km (0.111 R)
• M11: 3,679,060 km (0.026 R)
• M12: 4,217,314 km (0.118 R)
• M13: 4,970,988 km (0.118 R)
• M14: 5,224,107 km (0.116 R)
• M15: 6,016,677 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.6

Radius: 14.5

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 1.34 AU - 1.34 AU

Year: 1018 Days

Day: 10.2 Hours

Environment

Temp: -166 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 22,574,885 km

• M1: 180,565 km (0.12 R)
• M2: 827,127 km (0.11 R)
• M3: 1,372,560 km (0.091 R)
• M4: 2,012,540 km (0.116 R)
• M5: 3,238,196 km (0.084 R)
• M6: 4,053,205 km (0.04 R)
• M7: 4,518,155 km (0.07 R)
• M8: 5,247,145 km (0.038 R)
• M9: 5,917,045 km (0.098 R)
• M10: 6,497,634 km (0.116 R)
• M11: 7,116,072 km (0.098 R)
• M12: 7,680,654 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 165.1

Radius: 8.8

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 1.62 AU - 1.66 AU

Year: 1378 Days

Day: 6.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 22,574,885 km

• M1: 109,506 km (0.032 R)
• M2: 451,786 km (0.066 R)
• M3: 988,244 km (0.096 R)
• M4: 1,804,599 km (0.039 R)
• M5: 2,090,481 km (0.066 R)
• M6: 2,676,306 km (0.1 R)
• M7: 3,341,418 km (0.088 R)
• M8: 3,622,961 km (0.094 R)
• M9: 4,532,217 km (0.042 R)
• M10: 5,773,580 km (0.104 R)
• M11: 6,160,889 km (0.077 R)
• M12: 7,450,722 km (0.066 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 384.6

Radius: 12.6

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 1.41 AU - 2.15 AU

Year: 1558 Days

Day: 5 Hours

Environment

Temp: -195 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 22,574,885 km

• M1: 156,629 km (0.102 R)
• M2: 551,567 km (0.084 R)
• M3: 1,314,217 km (0.108 R)
• M4: 2,359,906 km (0.084 R)
• M5: 3,007,216 km (0.112 R)
• M6: 3,676,068 km (0.113 R)
• M7: 4,389,052 km (0.114 R)
• M8: 4,807,178 km (0.091 R)
• M9: 5,640,139 km (0.081 R)
• M10: 6,360,153 km (0.055 R)
• M11: 7,214,657 km (0.093 R)
• M12: 7,931,081 km (0.097 R)
• M13: 8,416,227 km (0.074 R)
• M14: 9,007,288 km (0.078 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 531.8

Radius: 12

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 2.13 AU - 2.19 AU

Year: 2083 Days

Day: 7.5 Hours

Environment

Temp: -201 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 22,574,885 km

• M1: 151,094 km (0.059 R)
• M2: 741,108 km (0.094 R)
• M3: 1,182,721 km (0.101 R)
• M4: 1,621,940 km (0.091 R)
• M5: 3,033,097 km (0.117 R)
• M6: 3,427,287 km (0.119 R)
• M7: 4,018,797 km (0.117 R)
• M8: 4,576,199 km (0.099 R)
• M9: 5,119,389 km (0.057 R)
• M10: 6,014,882 km (0.044 R)
• M11: 7,423,495 km (0.093 R)
• M12: 8,175,374 km (0.114 R)
• M13: 8,662,913 km (0.117 R)
• M14: 9,234,677 km (0.104 R)
• M15: 9,865,232 km (0.028 R)
• M16: 10,278,122 km (0.11 R)
• M17: 10,702,531 km (0.05 R)
• M18: 12,007,772 km (0.105 R)
• M19: 13,416,535 km (0.073 R)
• M20: 14,313,075 km (0.105 R)
• M21: 15,249,109 km (0.089 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 817.2

Radius: 14.1

Gravity: 4.11 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 2.23 AU - 2.81 AU

Year: 2624 Days

Day: 9.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 22,574,885 km

• M1: 177,423 km (0.103 R)
• M2: 790,924 km (0.111 R)
• M3: 1,448,706 km (0.097 R)
• M4: 2,096,165 km (0.088 R)
• M5: 3,862,617 km (0.032 R)
• M6: 4,484,047 km (0.12 R)
• M7: 4,934,935 km (0.043 R)
• M8: 5,694,144 km (0.069 R)
• M9: 6,224,468 km (0.115 R)
• M10: 7,633,381 km (0.096 R)
• M11: 9,032,570 km (0.037 R)
• M12: 12,291,410 km (0.075 R)
• M13: 15,389,432 km (0.068 R)
• M14: 16,004,130 km (0.102 R)
• M15: 17,119,083 km (0.08 R)
• M16: 19,861,810 km (0.083 R)

Planet 10 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 703.4

Radius: 13.4

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 2.46 AU - 3.28 AU

Year: 3190 Days

Day: 5.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 22,574,885 km

• M1: 166,652 km (0.115 R)
• M2: 612,603 km (0.089 R)
• M3: 1,111,063 km (0.111 R)
• M4: 1,547,590 km (0.076 R)
• M5: 3,086,952 km (0.078 R)
• M6: 3,935,621 km (0.115 R)
• M7: 4,584,128 km (0.044 R)
• M8: 5,227,847 km (0.109 R)
• M9: 7,058,177 km (0.064 R)
• M10: 8,186,743 km (0.1 R)
• M11: 10,277,673 km (0.093 R)
• M12: 11,341,164 km (0.048 R)
• M13: 14,519,221 km (0.065 R)
• M14: 15,698,950 km (0.058 R)
• M15: 17,844,333 km (0.089 R)
• M16: 18,424,474 km (0.105 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 369 - 10,531 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit