🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.11

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.63 AU - 0.71 AU

Year: 354 Days

Day: 43.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 46.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 34,085,402 km

• M1: 125,961 km (0.117 R)
• M2: 153,338 km (0.097 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 134

Radius: 11.1

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.75 AU - 0.95 AU

Year: 506 Days

Day: 5.6 Hours

Environment

Temp: -160 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 34,085,402 km

• M1: 140,921 km (0.117 R)
• M2: 677,978 km (0.045 R)
• M3: 1,099,694 km (0.081 R)
• M4: 2,153,312 km (0.115 R)
• M5: 2,612,577 km (0.1 R)
• M6: 3,806,518 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 20.3

Radius: 13.4

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.78 AU - 0.94 AU

Year: 515 Days

Day: 6.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 34,085,402 km

• M1: 166,802 km (0.08 R)
• M2: 797,207 km (0.113 R)
• M3: 1,237,474 km (0.1 R)
• M4: 1,888,374 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828

Radius: 8.9

Gravity: 10.45 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.88 AU - 1.08 AU

Year: 626 Days

Day: 9.3 Hours

Environment

Temp: -161 °C

Axial Tilt: 157.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 34,085,402 km

• M1: 111,151 km (0.087 R)
• M2: 401,371 km (0.115 R)
• M3: 711,787 km (0.074 R)
• M4: 1,000,062 km (0.105 R)
• M5: 1,453,942 km (0.092 R)
• M6: 1,826,291 km (0.081 R)
• M7: 2,281,966 km (0.081 R)
• M8: 2,823,361 km (0.11 R)
• M9: 3,150,082 km (0.111 R)
• M10: 3,894,481 km (0.103 R)
• M11: 4,426,302 km (0.118 R)
• M12: 5,287,088 km (0.115 R)
• M13: 5,616,203 km (0.118 R)
• M14: 7,248,316 km (0.119 R)
• M15: 8,029,666 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 336.9

Radius: 14.3

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 2.64 AU - 4.18 AU

Year: 4066 Days

Day: 9.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 34,085,402 km

• M1: 178,021 km (0.098 R)
• M2: 674,836 km (0.088 R)
• M3: 1,272,180 km (0.096 R)
• M4: 1,725,013 km (0.115 R)
• M5: 4,215,518 km (0.077 R)
• M6: 4,896,937 km (0.051 R)
• M7: 7,209,121 km (0.101 R)
• M8: 7,734,659 km (0.056 R)
• M9: 9,037,955 km (0.099 R)
• M10: 10,098,604 km (0.094 R)
• M11: 10,758,181 km (0.089 R)
• M12: 11,570,647 km (0.12 R)
• M13: 13,548,481 km (0.092 R)
• M14: 16,471,773 km (0.066 R)
• M15: 17,828,925 km (0.07 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 86.5

Radius: 14.3

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 3.19 AU - 4.25 AU

Year: 4633 Days

Day: 11.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 5.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,085,402 km

• M1: 178,021 km (0.104 R)
• M2: 766,839 km (0.08 R)
• M3: 1,332,319 km (0.093 R)
• M4: 1,934,151 km (0.059 R)
• M5: 4,493,022 km (0.111 R)
• M6: 4,992,829 km (0.059 R)
• M7: 8,133,487 km (0.047 R)
• M8: 9,868,373 km (0.081 R)
• M9: 13,479,815 km (0.085 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 724.4

Radius: 9.4

Gravity: 8.2 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 3.58 AU - 4.64 AU

Year: 5380 Days

Day: 7.2 Hours

Environment

Temp: -214 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 34,085,402 km

• M1: 117,584 km (0.027 R)
• M2: 503,397 km (0.101 R)
• M3: 926,460 km (0.05 R)
• M4: 1,520,662 km (0.119 R)
• M5: 2,011,493 km (0.118 R)
• M6: 3,394,974 km (0.08 R)
• M7: 3,743,687 km (0.05 R)
• M8: 4,213,125 km (0.079 R)
• M9: 4,668,800 km (0.059 R)
• M10: 5,984,064 km (0.074 R)
• M11: 7,458,651 km (0.082 R)
• M12: 7,974,913 km (0.106 R)
• M13: 8,319,287 km (0.116 R)
• M14: 13,106,868 km (0.025 R)
• M15: 13,695,535 km (0.076 R)
• M16: 14,413,904 km (0.05 R)
• M17: 15,508,811 km (0.119 R)
• M18: 18,520,665 km (0.072 R)
• M19: 22,654,802 km (0.065 R)
• M20: 24,291,852 km (0.109 R)
• M21: 25,673,687 km (0.059 R)
• M22: 27,712,856 km (0.092 R)
• M23: 28,150,879 km (0.06 R)
• M24: 29,130,745 km (0.037 R)
• M25: 30,503,455 km (0.106 R)
• M26: 31,252,940 km (0.103 R)
• M27: 32,206,926 km (0.107 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.5

Radius: 9.9

Gravity: 7.27 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 4.84 AU - 6.82 AU

Year: 9089 Days

Day: 13.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 34,085,402 km

• M1: 124,316 km (0.105 R)
• M2: 434,881 km (0.077 R)
• M3: 1,153,250 km (0.078 R)
• M4: 1,584,541 km (0.057 R)
• M5: 2,425,131 km (0.041 R)
• M6: 2,819,022 km (0.11 R)
• M7: 3,611,891 km (0.111 R)
• M8: 4,375,887 km (0.093 R)
• M9: 4,751,677 km (0.115 R)
• M10: 5,117,743 km (0.079 R)
• M11: 5,736,031 km (0.111 R)
• M12: 6,366,885 km (0.094 R)
• M13: 7,004,621 km (0.108 R)
• M14: 7,808,710 km (0.073 R)
• M15: 13,976,181 km (0.113 R)
• M16: 14,539,417 km (0.072 R)
• M17: 15,182,987 km (0.041 R)
• M18: 16,320,380 km (0.083 R)
• M19: 20,073,042 km (0.083 R)
• M20: 24,096,926 km (0.098 R)
• M21: 24,454,614 km (0.099 R)
• M22: 26,297,211 km (0.105 R)
• M23: 27,349,184 km (0.072 R)
• M24: 31,731,504 km (0.058 R)
• M25: 34,257,613 km (0.096 R)
• M26: 37,749,975 km (0.106 R)
• M27: 38,842,339 km (0.12 R)
• M28: 43,291,230 km (0.087 R)
• M29: 44,353,674 km (0.083 R)
• M30: 45,161,952 km (0.098 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 148.8

Radius: 5.6

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 5.59 AU - 9.11 AU

Year: 12866 Days

Day: 24.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 34,085,402 km

• M1: 69,713 km (0.086 R)
• M2: 255,064 km (0.11 R)
• M3: 824,434 km (0.096 R)
• M4: 2,214,198 km (0.097 R)
• M5: 2,571,887 km (0.041 R)
• M6: 3,715,114 km (0.099 R)
• M7: 4,071,605 km (0.071 R)
• M8: 6,706,473 km (0.066 R)
• M9: 8,615,790 km (0.079 R)
• M10: 9,112,605 km (0.07 R)
• M11: 9,716,232 km (0.084 R)
• M12: 10,027,994 km (0.098 R)
• M13: 11,390,531 km (0.115 R)
• M14: 12,295,748 km (0.089 R)
• M15: 14,420,038 km (0.074 R)
• M16: 16,149,838 km (0.068 R)
• M17: 20,520,340 km (0.101 R)
• M18: 26,643,830 km (0.118 R)
• M19: 28,775,898 km (0.051 R)
• M20: 31,403,884 km (0.09 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 240 - 13,841 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit