🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.38

Radius: 1.14

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.44 AU - 0.58 AU

Year: 232 Days

Day: 40.1 Hours

Environment

Temp: -116 °C

Axial Tilt: 7.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,944,450 km

• M1: 56,548 km (0.115 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.98

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.51 AU - 0.67 AU

Year: 288 Days

Day: 12.5 Hours

Environment

Temp: -126 °C

Axial Tilt: 49.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 501.3

Radius: 9.4

Gravity: 5.67 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.73 AU - 0.93 AU

Year: 481 Days

Day: 13.6 Hours

Environment

Temp: -147 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 63,944,450 km

• M1: 116,986 km (0.083 R)
• M2: 558,598 km (0.1 R)
• M3: 1,152,951 km (0.051 R)
• M4: 1,611,169 km (0.069 R)
• M5: 1,930,860 km (0.065 R)
• M6: 2,239,929 km (0.087 R)
• M7: 3,089,944 km (0.052 R)
• M8: 3,725,137 km (0.073 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 787

Radius: 10.1

Gravity: 7.71 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.67 AU - 1.95 AU

Year: 1548 Days

Day: 13.6 Hours

Environment

Temp: -187 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 63,944,450 km

• M1: 125,662 km (0.057 R)
• M2: 823,387 km (0.09 R)
• M3: 1,306,737 km (0.092 R)
• M4: 1,762,712 km (0.071 R)
• M5: 2,372,622 km (0.034 R)
• M6: 2,983,730 km (0.112 R)
• M7: 3,529,014 km (0.071 R)
• M8: 3,922,606 km (0.117 R)
• M9: 4,860,136 km (0.098 R)
• M10: 5,196,731 km (0.04 R)
• M11: 5,777,021 km (0.058 R)
• M12: 6,856,968 km (0.115 R)
• M13: 8,814,307 km (0.097 R)
• M14: 10,004,956 km (0.108 R)
• M15: 12,351,099 km (0.099 R)
• M16: 12,742,148 km (0.106 R)
• M17: 13,101,034 km (0.078 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 606.6

Radius: 8.1

Gravity: 9.25 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 2.32 AU - 2.98 AU

Year: 2743 Days

Day: 9.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 47.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 63,944,450 km

• M1: 100,829 km (0.054 R)
• M2: 448,345 km (0.053 R)
• M3: 782,846 km (0.107 R)
• M4: 1,136,495 km (0.062 R)
• M5: 1,492,388 km (0.103 R)
• M6: 1,804,150 km (0.096 R)
• M7: 2,069,537 km (0.065 R)
• M8: 2,445,327 km (0.052 R)
• M9: 3,127,792 km (0.094 R)
• M10: 3,737,404 km (0.081 R)
• M11: 4,030,615 km (0.102 R)
• M12: 4,360,180 km (0.105 R)
• M13: 5,168,158 km (0.106 R)
• M14: 5,458,527 km (0.109 R)
• M15: 5,862,741 km (0.107 R)
• M16: 8,093,843 km (0.117 R)
• M17: 9,274,170 km (0.107 R)
• M18: 10,681,288 km (0.074 R)
• M19: 11,517,241 km (0.097 R)
• M20: 12,830,112 km (0.085 R)
• M21: 13,912,901 km (0.086 R)
• M22: 15,449,720 km (0.052 R)
• M23: 17,962,516 km (0.086 R)
• M24: 19,085,547 km (0.115 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 88.3

Radius: 7.8

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 5.99 AU - 8.47 AU

Year: 12361 Days

Day: 25 Hours

Environment

Temp: -222 °C

Axial Tilt: 140.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 63,944,450 km

• M1: 97,089 km (0.101 R)
• M2: 373,247 km (0.106 R)
• M3: 674,986 km (0.109 R)
• M4: 1,539,212 km (0.105 R)
• M5: 2,215,395 km (0.09 R)
• M6: 2,595,822 km (0.116 R)
• M7: 4,424,656 km (0.114 R)
• M8: 5,325,385 km (0.102 R)
• M9: 5,833,719 km (0.09 R)
• M10: 7,589,100 km (0.038 R)
• M11: 10,383,738 km (0.074 R)
• M12: 12,296,646 km (0.057 R)
• M13: 12,883,668 km (0.104 R)
• M14: 15,588,846 km (0.104 R)
• M15: 23,774,094 km (0.079 R)
• M16: 25,070,808 km (0.073 R)
• M17: 25,461,109 km (0.084 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 932.7

Radius: 5.3

Gravity: 33.2 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 7.01 AU - 10.77 AU

Year: 16853 Days

Day: 16.8 Hours

Environment

Temp: -233 °C

Axial Tilt: 48.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 63,944,450 km

• M1: 238,758 km (0.043 R)
• M2: 497,114 km (0.086 R)
• M3: 667,356 km (0.073 R)
• M4: 910,752 km (0.102 R)
• M5: 1,371,962 km (0.117 R)
• M6: 1,976,188 km (0.117 R)
• M7: 2,262,369 km (0.079 R)
• M8: 2,646,386 km (0.116 R)
• M9: 4,525,036 km (0.096 R)
• M10: 4,769,479 km (0.09 R)
• M11: 5,059,699 km (0.104 R)
• M12: 5,516,870 km (0.119 R)
• M13: 7,007,763 km (0.095 R)
• M14: 8,122,267 km (0.105 R)
• M15: 8,855,895 km (0.026 R)
• M16: 9,128,312 km (0.099 R)
• M17: 9,519,062 km (0.09 R)
• M18: 10,274,083 km (0.118 R)
• M19: 11,902,904 km (0.094 R)
• M20: 15,192,861 km (0.112 R)
• M21: 16,961,407 km (0.037 R)
• M22: 19,042,163 km (0.113 R)
• M23: 19,496,193 km (0.12 R)
• M24: 22,473,191 km (0.076 R)
• M25: 22,675,148 km (0.034 R)
• M26: 25,410,694 km (0.051 R)
• M27: 29,671,391 km (0.042 R)
• M28: 32,289,504 km (0.073 R)
• M29: 32,934,869 km (0.075 R)
• M30: 33,326,217 km (0.11 R)
• M31: 40,910,231 km (0.11 R)
• M32: 41,970,431 km (0.072 R)
• M33: 48,046,947 km (0.12 R)
• M34: 48,382,195 km (0.102 R)
• M35: 51,819,805 km (0.104 R)
• M36: 55,600,741 km (0.048 R)
• M37: 58,984,645 km (0.064 R)
• M38: 61,315,230 km (0.077 R)
• M39: 65,540,174 km (0.074 R)
• M40: 68,250,588 km (0.117 R)
• M41: 69,099,256 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 535.6

Radius: 5.3

Gravity: 19.07 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 7.48 AU - 10.7 AU

Year: 17425 Days

Day: 22 Hours

Environment

Temp: -238 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 63,944,450 km

• M1: 67,169 km (0.115 R)
• M2: 379,679 km (0.054 R)
• M3: 971,189 km (0.094 R)
• M4: 1,365,679 km (0.117 R)
• M5: 1,705,865 km (0.074 R)
• M6: 3,275,445 km (0.111 R)
• M7: 5,733,039 km (0.055 R)
• M8: 8,002,888 km (0.105 R)
• M9: 8,341,577 km (0.118 R)
• M10: 8,842,132 km (0.04 R)
• M11: 9,047,679 km (0.072 R)
• M12: 10,236,683 km (0.086 R)
• M13: 11,224,029 km (0.072 R)
• M14: 13,386,317 km (0.105 R)
• M15: 14,997,187 km (0.05 R)
• M16: 17,047,874 km (0.096 R)
• M17: 17,286,632 km (0.106 R)
• M18: 19,624,398 km (0.1 R)
• M19: 19,886,643 km (0.098 R)
• M20: 23,122,445 km (0.107 R)
• M21: 24,007,915 km (0.11 R)
• M22: 26,056,060 km (0.066 R)
• M23: 28,107,046 km (0.079 R)
• M24: 30,031,174 km (0.108 R)
• M25: 38,881,384 km (0.115 R)
• M26: 41,122,959 km (0.059 R)
• M27: 44,946,680 km (0.114 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 215 - 12,755 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit