🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.47 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.94 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.75

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.76 AU - 1.12 AU

Year: 326 Days

Day: 17.8 Hours

Environment

Temp: 173 °C

Axial Tilt: 19.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.24

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 1.34 AU - 1.72 AU

Year: 678 Days

Day: 35.8 Hours

Environment

Temp: -38 °C

Axial Tilt: 39.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.71

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.48 AU - 2.06 AU

Year: 843 Days

Day: 36.5 Hours

Environment

Temp: -53 °C

Axial Tilt: 3.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.6

Radius: 0.82

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.61 AU - 1.95 AU

Year: 851 Days

Day: 14.7 Hours

Environment

Temp: -41 °C

Axial Tilt: 6.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.94 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 8.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 564.1

Radius: 8.9

Gravity: 7.12 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 7.39 AU - 8.81 AU

Year: 8257 Days

Day: 12.7 Hours

Environment

Temp: -157 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 96,290,162 km

• M1: 110,702 km (0.084 R)
• M2: 530,474 km (0.065 R)
• M3: 1,123,031 km (0.111 R)
• M4: 1,965,716 km (0.11 R)
• M5: 2,769,057 km (0.106 R)
• M6: 3,052,993 km (0.111 R)
• M7: 3,334,088 km (0.093 R)
• M8: 3,776,149 km (0.047 R)
• M9: 4,100,926 km (0.097 R)
• M10: 4,778,156 km (0.093 R)
• M11: 6,148,772 km (0.077 R)
• M12: 6,671,018 km (0.1 R)
• M13: 7,072,539 km (0.06 R)
• M14: 7,764,429 km (0.073 R)
• M15: 8,250,173 km (0.073 R)
• M16: 9,783,701 km (0.112 R)
• M17: 11,654,273 km (0.114 R)
• M18: 13,519,908 km (0.056 R)
• M19: 14,889,626 km (0.102 R)
• M20: 17,488,440 km (0.042 R)
• M21: 18,679,239 km (0.074 R)
• M22: 19,039,471 km (0.101 R)
• M23: 20,299,384 km (0.116 R)
• M24: 21,299,745 km (0.082 R)
• M25: 21,931,347 km (0.052 R)
• M26: 26,345,681 km (0.1 R)
• M27: 28,760,191 km (0.1 R)
• M28: 29,726,892 km (0.102 R)
• M29: 31,217,485 km (0.08 R)
• M30: 32,341,713 km (0.078 R)
• M31: 33,176,021 km (0.116 R)
• M32: 37,450,630 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 10.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 599.9

Radius: 13.8

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 8.05 AU - 12.41 AU

Year: 11719 Days

Day: 8.2 Hours

Environment

Temp: -178 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 96,290,162 km

• M1: 171,738 km (0.05 R)
• M2: 690,693 km (0.084 R)
• M3: 1,449,454 km (0.078 R)
• M4: 2,312,633 km (0.113 R)
• M5: 3,208,426 km (0.036 R)
• M6: 3,989,476 km (0.087 R)
• M7: 7,110,836 km (0.105 R)
• M8: 7,607,351 km (0.1 R)
• M9: 8,350,404 km (0.103 R)
• M10: 10,083,944 km (0.079 R)
• M11: 11,421,648 km (0.05 R)
• M12: 13,241,207 km (0.054 R)
• M13: 14,644,884 km (0.104 R)
• M14: 17,152,742 km (0.067 R)
• M15: 18,431,505 km (0.098 R)
• M16: 19,934,814 km (0.051 R)
• M17: 21,776,064 km (0.102 R)
• M18: 23,364,943 km (0.073 R)
• M19: 29,642,070 km (0.049 R)
• M20: 34,674,542 km (0.097 R)
• M21: 36,593,135 km (0.114 R)
• M22: 37,083,667 km (0.063 R)
• M23: 39,345,586 km (0.115 R)
• M24: 40,119,606 km (0.06 R)
• M25: 40,772,301 km (0.09 R)
• M26: 47,403,975 km (0.061 R)
• M27: 49,167,584 km (0.081 R)
• M28: 50,670,444 km (0.078 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 876.6

Radius: 6

Gravity: 24.35 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 12.75 AU - 16.91 AU

Year: 20454 Days

Day: 17.7 Hours

Environment

Temp: -183 °C

Axial Tilt: 43.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 96,290,162 km

• M1: 79,287 km (0.099 R)
• M2: 471,832 km (0.11 R)
• M3: 1,913,806 km (0.118 R)
• M4: 2,619,160 km (0.109 R)
• M5: 3,031,002 km (0.109 R)
• M6: 4,182,158 km (0.095 R)
• M7: 4,744,796 km (0.113 R)
• M8: 6,193,501 km (0.065 R)
• M9: 7,966,386 km (0.083 R)
• M10: 9,811,077 km (0.055 R)
• M11: 11,319,323 km (0.067 R)
• M12: 14,397,149 km (0.069 R)
• M13: 15,754,002 km (0.093 R)
• M14: 17,106,965 km (0.074 R)
• M15: 19,657,759 km (0.068 R)
• M16: 19,849,094 km (0.114 R)
• M17: 21,223,749 km (0.07 R)
• M18: 21,729,689 km (0.106 R)
• M19: 22,765,654 km (0.091 R)
• M20: 24,051,747 km (0.027 R)
• M21: 25,385,562 km (0.056 R)
• M22: 29,681,863 km (0.109 R)
• M23: 31,345,391 km (0.103 R)
• M24: 33,476,712 km (0.07 R)
• M25: 40,447,375 km (0.106 R)
• M26: 52,439,290 km (0.027 R)
• M27: 61,763,126 km (0.074 R)
• M28: 66,382,559 km (0.114 R)
• M29: 70,777,296 km (0.077 R)
• M30: 77,727,014 km (0.052 R)
• M31: 79,897,231 km (0.042 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 681.5

Radius: 5.1

Gravity: 26.2 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 15.7 AU - 21.34 AU

Year: 28545 Days

Day: 22.6 Hours

Environment

Temp: -189 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 96,290,162 km

• M1: 63,878 km (0.047 R)
• M2: 233,821 km (0.065 R)
• M3: 536,159 km (0.086 R)
• M4: 1,033,123 km (0.112 R)
• M5: 1,716,037 km (0.06 R)
• M6: 3,336,332 km (0.077 R)
• M7: 4,153,884 km (0.097 R)
• M8: 4,515,612 km (0.116 R)
• M9: 4,704,255 km (0.12 R)
• M10: 5,343,636 km (0.114 R)
• M11: 6,503,319 km (0.113 R)
• M12: 6,990,858 km (0.055 R)
• M13: 8,316,445 km (0.116 R)
• M14: 8,485,939 km (0.104 R)
• M15: 8,832,109 km (0.038 R)
• M16: 9,308,129 km (0.054 R)
• M17: 10,117,902 km (0.116 R)
• M18: 10,638,952 km (0.116 R)
• M19: 15,384,645 km (0.079 R)
• M20: 17,053,110 km (0.097 R)
• M21: 18,166,866 km (0.092 R)
• M22: 21,056,947 km (0.078 R)
• M23: 23,669,226 km (0.093 R)
• M24: 24,702,049 km (0.069 R)
• M25: 26,246,498 km (0.099 R)
• M26: 28,234,205 km (0.057 R)
• M27: 34,942,472 km (0.072 R)
• M28: 41,641,166 km (0.104 R)
• M29: 45,029,109 km (0.092 R)
• M30: 49,516,446 km (0.107 R)
• M31: 56,894,015 km (0.114 R)
• M32: 59,367,466 km (0.062 R)
• M33: 61,911,827 km (0.117 R)
• M34: 63,867,071 km (0.08 R)
• M35: 64,307,038 km (0.05 R)
• M36: 67,671,943 km (0.113 R)
• M37: 68,819,060 km (0.059 R)
• M38: 76,222,359 km (0.07 R)
• M39: 88,977,971 km (0.057 R)
• M40: 93,149,508 km (0.098 R)

Kuiper Belt

Range: 30.6 - 60.6 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 280 - 13,047 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit