🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.73

Radius: 0.88

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.59 AU - 0.71 AU

Year: 333 Days

Day: 14.7 Hours

Environment

Temp: -133 °C

Axial Tilt: 46.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 83,138,726 km

• M1: 34,856 km (0.112 R)
• M2: 389,553 km (0.072 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 512.8

Radius: 10.4

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.99 AU - 1.07 AU

Year: 665 Days

Day: 6.9 Hours

Environment

Temp: -152 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 83,138,726 km

• M1: 132,095 km (0.061 R)
• M2: 467,493 km (0.085 R)
• M3: 1,098,348 km (0.095 R)
• M4: 1,576,762 km (0.084 R)
• M5: 2,617,813 km (0.069 R)
• M6: 3,087,550 km (0.076 R)
• M7: 4,109,753 km (0.085 R)
• M8: 5,625,179 km (0.12 R)
• M9: 6,668,475 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 684.3

Radius: 9.3

Gravity: 7.91 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.36 AU - 1.76 AU

Year: 1239 Days

Day: 12.5 Hours

Environment

Temp: -181 °C

Axial Tilt: 46.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 83,138,726 km

• M1: 115,639 km (0.096 R)
• M2: 418,425 km (0.118 R)
• M3: 958,474 km (0.114 R)
• M4: 1,802,654 km (0.115 R)
• M5: 2,381,000 km (0.109 R)
• M6: 3,459,900 km (0.103 R)
• M7: 3,922,456 km (0.077 R)
• M8: 4,282,987 km (0.116 R)
• M9: 4,627,960 km (0.05 R)
• M10: 4,991,632 km (0.091 R)
• M11: 5,292,174 km (0.069 R)
• M12: 5,863,638 km (0.038 R)
• M13: 6,882,699 km (0.096 R)
• M14: 7,205,232 km (0.105 R)
• M15: 8,626,412 km (0.059 R)
• M16: 9,539,707 km (0.072 R)
• M17: 10,004,058 km (0.054 R)
• M18: 10,483,520 km (0.062 R)
• M19: 11,011,750 km (0.116 R)
• M20: 11,696,758 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 281.7

Radius: 12.1

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.68 AU - 2.58 AU

Year: 1977 Days

Day: 8.6 Hours

Environment

Temp: -187 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 83,138,726 km

• M1: 150,495 km (0.061 R)
• M2: 583,581 km (0.088 R)
• M3: 1,181,823 km (0.102 R)
• M4: 1,918,742 km (0.116 R)
• M5: 2,316,224 km (0.042 R)
• M6: 2,983,430 km (0.107 R)
• M7: 4,212,377 km (0.105 R)
• M8: 5,352,462 km (0.118 R)
• M9: 6,427,921 km (0.111 R)
• M10: 8,152,336 km (0.102 R)
• M11: 9,696,186 km (0.097 R)
• M12: 10,262,414 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 522.1

Radius: 11.9

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 1.81 AU - 2.49 AU

Year: 2004 Days

Day: 10 Hours

Environment

Temp: -186 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 83,138,726 km

• M1: 148,700 km (0.117 R)
• M2: 569,220 km (0.077 R)
• M3: 982,260 km (0.089 R)
• M4: 1,800,410 km (0.106 R)
• M5: 2,296,627 km (0.101 R)
• M6: 2,811,842 km (0.106 R)
• M7: 3,323,317 km (0.09 R)
• M8: 4,095,391 km (0.055 R)
• M9: 4,674,036 km (0.119 R)
• M10: 5,900,439 km (0.119 R)
• M11: 8,980,061 km (0.074 R)
• M12: 13,574,212 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604.3

Radius: 14.7

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 2.08 AU - 2.58 AU

Year: 2261 Days

Day: 14.7 Hours

Environment

Temp: -202 °C

Axial Tilt: 47.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 83,138,726 km

• M1: 183,856 km (0.088 R)
• M2: 657,034 km (0.109 R)
• M3: 1,184,217 km (0.093 R)
• M4: 1,741,618 km (0.119 R)
• M5: 2,369,780 km (0.104 R)
• M6: 3,179,254 km (0.066 R)
• M7: 3,958,060 km (0.081 R)
• M8: 4,484,645 km (0.037 R)
• M9: 5,191,944 km (0.051 R)
• M10: 6,097,759 km (0.105 R)
• M11: 6,589,038 km (0.097 R)
• M12: 8,010,068 km (0.048 R)
• M13: 8,473,971 km (0.098 R)
• M14: 8,955,976 km (0.074 R)
• M15: 9,558,556 km (0.117 R)
• M16: 10,733,647 km (0.108 R)
• M17: 11,414,168 km (0.054 R)
• M18: 12,571,008 km (0.083 R)
• M19: 13,156,834 km (0.093 R)
• M20: 13,892,705 km (0.061 R)
• M21: 15,780,631 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 525.3

Radius: 7.7

Gravity: 8.86 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 8.15 AU - 11.63 AU

Year: 19776 Days

Day: 19.5 Hours

Environment

Temp: -239 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 83,138,726 km

• M1: 95,892 km (0.076 R)
• M2: 417,228 km (0.111 R)
• M3: 1,038,060 km (0.119 R)
• M4: 1,531,284 km (0.106 R)
• M5: 2,465,373 km (0.082 R)
• M6: 3,080,819 km (0.07 R)
• M7: 6,096,861 km (0.026 R)
• M8: 8,019,493 km (0.082 R)
• M9: 9,038,554 km (0.107 R)
• M10: 11,642,903 km (0.117 R)
• M11: 13,703,614 km (0.118 R)
• M12: 14,636,057 km (0.046 R)
• M13: 18,618,353 km (0.096 R)
• M14: 19,850,889 km (0.091 R)
• M15: 21,992,233 km (0.069 R)
• M16: 24,489,620 km (0.101 R)
• M17: 27,841,211 km (0.106 R)
• M18: 28,984,438 km (0.064 R)
• M19: 32,601,565 km (0.102 R)
• M20: 35,970,658 km (0.08 R)
• M21: 38,016,260 km (0.11 R)
• M22: 38,855,803 km (0.062 R)
• M23: 39,850,778 km (0.069 R)
• M24: 42,637,039 km (0.11 R)
• M25: 44,771,352 km (0.07 R)
• M26: 48,267,603 km (0.118 R)
• M27: 48,757,985 km (0.085 R)
• M28: 51,600,195 km (0.108 R)
• M29: 55,618,544 km (0.084 R)
• M30: 56,518,824 km (0.107 R)
• M31: 60,785,953 km (0.102 R)
• M32: 62,706,341 km (0.12 R)
• M33: 63,290,371 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 592.1

Radius: 4.7

Gravity: 26.8 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 11.02 AU - 11.84 AU

Year: 24570 Days

Day: 18.2 Hours

Environment

Temp: -233 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 83,138,726 km

• M1: 59,390 km (0.098 R)
• M2: 216,917 km (0.064 R)
• M3: 398,678 km (0.091 R)
• M4: 733,179 km (0.119 R)
• M5: 884,123 km (0.116 R)
• M6: 1,468,752 km (0.071 R)
• M7: 1,767,499 km (0.085 R)
• M8: 2,705,029 km (0.058 R)
• M9: 2,884,247 km (0.09 R)
• M10: 3,775,401 km (0.116 R)
• M11: 4,474,772 km (0.112 R)
• M12: 4,726,096 km (0.058 R)
• M13: 9,246,495 km (0.106 R)
• M14: 9,595,357 km (0.093 R)
• M15: 11,875,528 km (0.087 R)
• M16: 14,032,280 km (0.083 R)
• M17: 15,606,798 km (0.112 R)
• M18: 17,647,313 km (0.109 R)
• M19: 24,270,908 km (0.12 R)
• M20: 27,708,667 km (0.064 R)
• M21: 27,948,622 km (0.092 R)
• M22: 28,922,953 km (0.052 R)
• M23: 36,098,565 km (0.116 R)
• M24: 37,107,602 km (0.117 R)
• M25: 41,176,066 km (0.08 R)
• M26: 41,802,881 km (0.088 R)
• M27: 43,075,959 km (0.118 R)
• M28: 44,047,447 km (0.104 R)
• M29: 46,539,898 km (0.1 R)
• M30: 51,622,336 km (0.063 R)
• M31: 53,271,652 km (0.069 R)
• M32: 55,715,782 km (0.101 R)
• M33: 58,627,406 km (0.092 R)
• M34: 62,459,205 km (0.104 R)
• M35: 67,750,632 km (0.074 R)
• M36: 73,333,026 km (0.093 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: 439 - 10,795 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit