🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.75

Radius: 0.89

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.77 AU - 0.83 AU

Year: 265 Days

Day: 39 Hours

Environment

Temp: 152 °C

Axial Tilt: 11.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.09 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.11

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 1.04 AU - 1.14 AU

Year: 422 Days

Day: 25.4 Hours

Environment

Temp: 1 °C

Axial Tilt: 86.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 102,892,321 km

• M1: 42,635 km (0.117 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.64

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 1.57 AU - 2.11 AU

Year: 926 Days

Day: 42.5 Hours

Environment

Temp: -56 °C

Axial Tilt: 165.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 8.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 983.4

Radius: 10.2

Gravity: 9.45 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 7.96 AU - 9.6 AU

Year: 9648 Days

Day: 5.9 Hours

Environment

Temp: -166 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 102,892,321 km

• M1: 126,859 km (0.119 R)
• M2: 567,425 km (0.072 R)
• M3: 1,346,082 km (0.091 R)
• M4: 2,054,278 km (0.117 R)
• M5: 3,837,185 km (0.114 R)
• M6: 5,320,747 km (0.09 R)
• M7: 5,736,031 km (0.102 R)
• M8: 6,515,137 km (0.09 R)
• M9: 7,405,244 km (0.105 R)
• M10: 7,923,900 km (0.111 R)
• M11: 10,999,333 km (0.102 R)
• M12: 13,422,669 km (0.042 R)
• M13: 15,269,305 km (0.089 R)
• M14: 15,616,073 km (0.048 R)
• M15: 17,429,498 km (0.116 R)
• M16: 18,504,209 km (0.07 R)
• M17: 19,622,603 km (0.081 R)
• M18: 20,032,651 km (0.087 R)
• M19: 20,448,533 km (0.081 R)
• M20: 21,125,912 km (0.11 R)
• M21: 24,078,974 km (0.113 R)
• M22: 32,018,582 km (0.106 R)
• M23: 32,473,060 km (0.115 R)
• M24: 34,097,843 km (0.109 R)
• M25: 35,532,935 km (0.06 R)
• M26: 37,007,970 km (0.044 R)
• M27: 37,508,674 km (0.062 R)
• M28: 42,903,921 km (0.038 R)
• M29: 49,245,824 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 9.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 917.4

Radius: 12.9

Gravity: 5.51 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 9.67 AU - 9.71 AU

Year: 11186 Days

Day: 12.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 102,892,321 km

• M1: 160,818 km (0.098 R)
• M2: 709,094 km (0.111 R)
• M3: 1,447,210 km (0.049 R)
• M4: 2,275,832 km (0.105 R)
• M5: 3,202,591 km (0.093 R)
• M6: 5,438,182 km (0.047 R)
• M7: 6,092,672 km (0.114 R)
• M8: 7,915,373 km (0.089 R)
• M9: 8,375,985 km (0.109 R)
• M10: 10,841,657 km (0.095 R)
• M11: 11,702,593 km (0.114 R)
• M12: 12,240,846 km (0.079 R)
• M13: 18,489,100 km (0.071 R)
• M14: 25,181,810 km (0.06 R)
• M15: 28,472,813 km (0.049 R)
• M16: 43,939,438 km (0.091 R)
• M17: 45,241,089 km (0.111 R)
• M18: 54,088,905 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 10.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 285.3

Radius: 9.9

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 9.96 AU - 11.06 AU

Year: 12636 Days

Day: 5 Hours

Environment

Temp: -173 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 102,892,321 km

• M1: 123,119 km (0.094 R)
• M2: 555,307 km (0.091 R)
• M3: 962,513 km (0.117 R)
• M4: 1,427,014 km (0.114 R)
• M5: 3,486,229 km (0.07 R)
• M6: 8,304,477 km (0.094 R)
• M7: 10,753,843 km (0.066 R)
• M8: 14,740,327 km (0.1 R)
• M9: 15,563,863 km (0.064 R)
• M10: 17,933,793 km (0.079 R)
• M11: 24,321,921 km (0.057 R)
• M12: 30,432,396 km (0.068 R)
• M13: 33,138,920 km (0.091 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 907.1

Radius: 5.9

Gravity: 26.06 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 10.44 AU - 16.34 AU

Year: 18171 Days

Day: 16.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 102,892,321 km

• M1: 73,453 km (0.036 R)
• M2: 292,913 km (0.087 R)
• M3: 953,537 km (0.118 R)
• M4: 1,563,896 km (0.087 R)
• M5: 2,497,686 km (0.04 R)
• M6: 3,757,450 km (0.095 R)
• M7: 4,269,224 km (0.111 R)
• M8: 4,936,131 km (0.118 R)
• M9: 6,256,033 km (0.114 R)
• M10: 6,743,872 km (0.108 R)
• M11: 7,895,925 km (0.038 R)
• M12: 11,275,640 km (0.059 R)
• M13: 12,610,502 km (0.113 R)
• M14: 12,959,963 km (0.049 R)
• M15: 13,751,784 km (0.069 R)
• M16: 15,038,027 km (0.085 R)
• M17: 15,510,606 km (0.119 R)
• M18: 15,750,412 km (0.113 R)
• M19: 16,735,215 km (0.079 R)
• M20: 16,987,586 km (0.112 R)
• M21: 17,586,576 km (0.074 R)
• M22: 18,199,479 km (0.057 R)
• M23: 20,600,973 km (0.045 R)
• M24: 27,047,744 km (0.081 R)
• M25: 31,548,545 km (0.096 R)
• M26: 36,806,761 km (0.086 R)
• M27: 37,233,863 km (0.095 R)
• M28: 38,389,058 km (0.056 R)
• M29: 47,319,751 km (0.109 R)
• M30: 49,534,099 km (0.116 R)
• M31: 51,106,971 km (0.081 R)
• M32: 56,024,702 km (0.078 R)
• M33: 56,589,883 km (0.056 R)
• M34: 57,540,278 km (0.118 R)
• M35: 68,921,983 km (0.078 R)
• M36: 70,442,197 km (0.098 R)
• M37: 73,549,494 km (0.078 R)
• M38: 76,515,571 km (0.095 R)
• M39: 77,444,125 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 886.9

Radius: 5.1

Gravity: 34.1 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 17.57 AU - 17.85 AU

Year: 27640 Days

Day: 16.4 Hours

Environment

Temp: -201 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 102,892,321 km

• M1: 65,225 km (0.116 R)
• M2: 228,137 km (0.052 R)
• M3: 550,969 km (0.114 R)
• M4: 791,223 km (0.083 R)
• M5: 1,188,555 km (0.071 R)
• M6: 1,891,665 km (0.109 R)
• M7: 2,519,827 km (0.052 R)
• M8: 3,496,551 km (0.112 R)
• M9: 3,929,338 km (0.098 R)
• M10: 4,176,773 km (0.091 R)
• M11: 10,072,425 km (0.073 R)
• M12: 10,269,445 km (0.119 R)
• M13: 14,605,539 km (0.119 R)
• M14: 16,893,190 km (0.044 R)
• M15: 17,833,113 km (0.033 R)
• M16: 20,755,657 km (0.057 R)
• M17: 22,053,120 km (0.049 R)
• M18: 24,334,038 km (0.113 R)
• M19: 26,021,203 km (0.067 R)
• M20: 30,439,876 km (0.119 R)
• M21: 31,407,923 km (0.042 R)
• M22: 31,828,892 km (0.103 R)
• M23: 33,843,676 km (0.038 R)
• M24: 36,402,398 km (0.115 R)
• M25: 46,461,658 km (0.078 R)
• M26: 52,317,966 km (0.116 R)
• M27: 63,436,379 km (0.112 R)
• M28: 67,310,664 km (0.119 R)
• M29: 68,950,706 km (0.082 R)
• M30: 70,617,376 km (0.112 R)
• M31: 72,799,261 km (0.078 R)
• M32: 73,536,479 km (0.111 R)
• M33: 87,117,422 km (0.083 R)
• M34: 87,670,635 km (0.047 R)
• M35: 89,344,636 km (0.083 R)
• M36: 100,444,050 km (0.115 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 246 - 18,365 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit