🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.83

Radius: 1.52

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.41 AU - 0.65 AU

Year: 253 Days

Day: 45.8 Hours

Environment

Temp: -122 °C

Axial Tilt: 161.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.86

Radius: 1.72

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.46 AU - 0.72 AU

Year: 297 Days

Day: 29.2 Hours

Environment

Temp: -120 °C

Axial Tilt: 24.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 481.7

Radius: 12.8

Gravity: 2.94 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 1 AU - 1.14 AU

Year: 726 Days

Day: 11.6 Hours

Environment

Temp: -170 °C

Axial Tilt: 167.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 80,075,853 km

• M1: 160,519 km (0.078 R)
• M2: 748,588 km (0.117 R)
• M3: 1,665,323 km (0.102 R)
• M4: 2,208,513 km (0.118 R)
• M5: 2,823,809 km (0.113 R)
• M6: 3,383,754 km (0.1 R)
• M7: 3,903,906 km (0.118 R)
• M8: 4,310,064 km (0.104 R)
• M9: 5,005,694 km (0.071 R)
• M10: 6,929,074 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831.3

Radius: 12.3

Gravity: 5.49 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 1.28 AU - 1.28 AU

Year: 950 Days

Day: 9.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 80,075,853 km

• M1: 153,487 km (0.045 R)
• M2: 587,620 km (0.12 R)
• M3: 1,201,121 km (0.095 R)
• M4: 1,814,323 km (0.101 R)
• M5: 2,396,558 km (0.113 R)
• M6: 3,074,386 km (0.105 R)
• M7: 4,387,257 km (0.064 R)
• M8: 4,813,461 km (0.073 R)
• M9: 5,325,834 km (0.111 R)
• M10: 6,130,371 km (0.111 R)
• M11: 6,943,436 km (0.074 R)
• M12: 7,574,439 km (0.069 R)
• M13: 8,190,334 km (0.108 R)
• M14: 8,592,154 km (0.067 R)
• M15: 9,233,929 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 624

Radius: 13.7

Gravity: 3.32 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 1.56 AU - 2.42 AU

Year: 1842 Days

Day: 11.2 Hours

Environment

Temp: -197 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 80,075,853 km

• M1: 172,187 km (0.117 R)
• M2: 704,756 km (0.073 R)
• M3: 1,845,888 km (0.069 R)
• M4: 2,297,674 km (0.098 R)
• M5: 3,578,830 km (0.104 R)
• M6: 4,368,108 km (0.099 R)
• M7: 7,226,924 km (0.09 R)
• M8: 8,072,899 km (0.058 R)
• M9: 9,270,131 km (0.084 R)
• M10: 10,547,547 km (0.117 R)
• M11: 13,081,287 km (0.062 R)
• M12: 13,699,874 km (0.114 R)
• M13: 14,208,806 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 692.7

Radius: 13.3

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 3.1 AU - 4.28 AU

Year: 4650 Days

Day: 7.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 80,075,853 km

• M1: 171,888 km (0.078 R)
• M2: 664,215 km (0.085 R)
• M3: 1,216,081 km (0.115 R)
• M4: 1,740,870 km (0.115 R)
• M5: 2,217,489 km (0.059 R)
• M6: 3,184,490 km (0.114 R)
• M7: 4,202,503 km (0.117 R)
• M8: 5,482,612 km (0.1 R)
• M9: 6,092,224 km (0.117 R)
• M10: 7,762,783 km (0.113 R)
• M11: 8,196,767 km (0.111 R)
• M12: 12,229,626 km (0.093 R)
• M13: 13,120,481 km (0.091 R)
• M14: 14,054,271 km (0.085 R)
• M15: 15,938,157 km (0.072 R)
• M16: 19,202,682 km (0.114 R)
• M17: 20,749,225 km (0.114 R)
• M18: 22,160,232 km (0.076 R)
• M19: 24,165,292 km (0.096 R)
• M20: 26,450,699 km (0.053 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 604.3

Radius: 7.5

Gravity: 10.74 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 7.38 AU - 8.12 AU

Year: 14153 Days

Day: 22.4 Hours

Environment

Temp: -236 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 80,075,853 km

• M1: 97,239 km (0.118 R)
• M2: 556,205 km (0.118 R)
• M3: 1,639,892 km (0.037 R)
• M4: 1,953,898 km (0.088 R)
• M5: 2,407,628 km (0.107 R)
• M6: 3,193,466 km (0.081 R)
• M7: 3,525,274 km (0.047 R)
• M8: 4,198,763 km (0.055 R)
• M9: 4,629,456 km (0.09 R)
• M10: 6,333,226 km (0.104 R)
• M11: 9,984,311 km (0.115 R)
• M12: 10,584,199 km (0.113 R)
• M13: 12,342,273 km (0.111 R)
• M14: 14,491,695 km (0.06 R)
• M15: 17,651,053 km (0.118 R)
• M16: 18,446,614 km (0.075 R)
• M17: 18,689,860 km (0.062 R)
• M18: 19,432,614 km (0.1 R)
• M19: 19,853,582 km (0.089 R)
• M20: 25,996,071 km (0.03 R)
• M21: 33,295,400 km (0.084 R)
• M22: 50,645,013 km (0.065 R)
• M23: 54,050,010 km (0.115 R)
• M24: 54,382,117 km (0.09 R)
• M25: 56,573,576 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 28.2

Radius: 6.7

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 8.81 AU - 9.29 AU

Year: 17860 Days

Day: 20 Hours

Environment

Temp: -233 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 80,075,853 km

• M1: 83,326 km (0.105 R)
• M2: 2,572,186 km (0.074 R)
• M3: 3,718,554 km (0.078 R)
• M4: 9,374,401 km (0.092 R)
• M5: 11,385,445 km (0.037 R)
• M6: 14,525,804 km (0.086 R)
• M7: 14,994,494 km (0.074 R)
• M8: 19,113,671 km (0.083 R)
• M9: 24,145,695 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 905

Radius: 3.4

Gravity: 78.29 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 8.52 AU - 10.2 AU

Year: 18786 Days

Day: 21.7 Hours

Environment

Temp: -231 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 80,075,853 km

• M1: 42,336 km (0.091 R)
• M2: 194,926 km (0.075 R)
• M3: 328,966 km (0.115 R)
• M4: 471,233 km (0.102 R)
• M5: 591,211 km (0.114 R)
• M6: 2,689,471 km (0.055 R)
• M7: 2,971,014 km (0.109 R)
• M8: 3,473,663 km (0.119 R)
• M9: 3,683,698 km (0.117 R)
• M10: 4,681,067 km (0.091 R)
• M11: 5,012,277 km (0.098 R)
• M12: 6,056,919 km (0.096 R)
• M13: 7,094,978 km (0.111 R)
• M14: 7,731,218 km (0.12 R)
• M15: 8,511,670 km (0.091 R)
• M16: 10,721,380 km (0.093 R)
• M17: 13,503,601 km (0.11 R)
• M18: 13,650,507 km (0.117 R)
• M19: 18,749,700 km (0.112 R)
• M20: 18,932,508 km (0.066 R)
• M21: 22,327,183 km (0.085 R)
• M22: 23,578,569 km (0.06 R)
• M23: 24,221,391 km (0.082 R)
• M24: 25,654,090 km (0.073 R)
• M25: 26,106,025 km (0.111 R)
• M26: 27,729,761 km (0.084 R)
• M27: 27,967,023 km (0.062 R)
• M28: 30,289,679 km (0.08 R)
• M29: 30,667,713 km (0.109 R)
• M30: 31,304,850 km (0.115 R)
• M31: 32,080,964 km (0.047 R)
• M32: 40,104,347 km (0.03 R)
• M33: 48,330,584 km (0.066 R)
• M34: 51,125,970 km (0.071 R)
• M35: 57,998,646 km (0.082 R)
• M36: 61,957,903 km (0.12 R)
• M37: 64,417,890 km (0.094 R)
• M38: 65,461,784 km (0.064 R)
• M39: 76,063,187 km (0.055 R)
• M40: 79,119,322 km (0.056 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 363 - 11,221 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit