🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.59 AU - 0.61 AU

Year: 305 Days

Day: 43.7 Hours

Environment

Temp: -127 °C

Axial Tilt: 23.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.78

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.5 AU - 0.74 AU

Year: 320 Days

Day: 39.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 1.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 14.5

Radius: 9.3

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.71 AU - 0.85 AU

Year: 452 Days

Day: 8 Hours

Environment

Temp: -139 °C

Axial Tilt: 161.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 49,093,029 km

• M1: 115,639 km (0.096 R)
• M2: 413,489 km (0.092 R)
• M3: 771,327 km (0.096 R)
• M4: 1,143,676 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.4

Radius: 9.6

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.76 AU - 1.22 AU

Year: 646 Days

Day: 11.9 Hours

Environment

Temp: -158 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 49,093,029 km

• M1: 119,379 km (0.107 R)
• M2: 450,140 km (0.108 R)
• M3: 986,598 km (0.112 R)
• M4: 1,397,843 km (0.043 R)
• M5: 2,383,393 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 906.1

Radius: 11.6

Gravity: 6.73 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 1.65 AU - 1.89 AU

Year: 1545 Days

Day: 7.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 49,093,029 km

• M1: 144,362 km (0.106 R)
• M2: 549,323 km (0.069 R)
• M3: 980,614 km (0.109 R)
• M4: 1,405,023 km (0.103 R)
• M5: 2,520,126 km (0.109 R)
• M6: 3,179,104 km (0.106 R)
• M7: 5,116,397 km (0.071 R)
• M8: 5,537,216 km (0.107 R)
• M9: 6,150,716 km (0.029 R)
• M10: 8,000,644 km (0.102 R)
• M11: 8,600,082 km (0.105 R)
• M12: 9,069,221 km (0.09 R)
• M13: 10,579,861 km (0.079 R)
• M14: 11,563,317 km (0.08 R)
• M15: 12,252,215 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 980.5

Radius: 9.8

Gravity: 10.21 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 1.85 AU - 2.77 AU

Year: 2303 Days

Day: 7.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 63.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 49,093,029 km

• M1: 121,922 km (0.077 R)
• M2: 497,263 km (0.098 R)
• M3: 820,844 km (0.074 R)
• M4: 1,255,425 km (0.069 R)
• M5: 1,782,608 km (0.079 R)
• M6: 2,270,447 km (0.111 R)
• M7: 2,643,843 km (0.113 R)
• M8: 2,991,509 km (0.115 R)
• M9: 3,442,097 km (0.108 R)
• M10: 4,634,093 km (0.053 R)
• M11: 5,361,288 km (0.088 R)
• M12: 6,001,717 km (0.091 R)
• M13: 6,924,137 km (0.107 R)
• M14: 8,132,888 km (0.116 R)
• M15: 9,956,187 km (0.119 R)
• M16: 10,646,581 km (0.119 R)
• M17: 11,205,329 km (0.07 R)
• M18: 12,731,976 km (0.116 R)
• M19: 15,679,054 km (0.107 R)
• M20: 16,089,700 km (0.117 R)
• M21: 17,971,791 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.3

Radius: 11.9

Gravity: 6.18 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 2.67 AU - 3.97 AU

Year: 3968 Days

Day: 9.2 Hours

Environment

Temp: -196 °C

Axial Tilt: 44 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 49,093,029 km

• M1: 148,551 km (0.077 R)
• M2: 679,773 km (0.117 R)
• M3: 1,189,004 km (0.12 R)
• M4: 1,574,817 km (0.075 R)
• M5: 2,832,336 km (0.099 R)
• M6: 3,767,772 km (0.098 R)
• M7: 4,168,096 km (0.117 R)
• M8: 4,671,044 km (0.086 R)
• M9: 5,945,019 km (0.055 R)
• M10: 7,963,843 km (0.085 R)
• M11: 9,406,864 km (0.04 R)
• M12: 15,107,141 km (0.102 R)
• M13: 17,857,947 km (0.112 R)
• M14: 19,449,668 km (0.074 R)
• M15: 20,112,237 km (0.095 R)
• M16: 21,064,876 km (0.11 R)
• M17: 22,190,151 km (0.085 R)
• M18: 23,952,713 km (0.072 R)
• M19: 27,588,839 km (0.112 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.6

Radius: 10.8

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 5 AU - 6.3 AU

Year: 8810 Days

Day: 11.8 Hours

Environment

Temp: -213 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 49,093,029 km

• M1: 135,984 km (0.072 R)
• M2: 1,106,127 km (0.075 R)
• M3: 1,941,332 km (0.108 R)
• M4: 2,919,702 km (0.1 R)
• M5: 3,836,737 km (0.101 R)
• M6: 4,700,515 km (0.113 R)
• M7: 13,379,435 km (0.056 R)
• M8: 14,590,131 km (0.1 R)
• M9: 16,405,950 km (0.079 R)
• M10: 17,298,301 km (0.099 R)
• M11: 17,863,332 km (0.116 R)
• M12: 19,556,630 km (0.085 R)
• M13: 19,938,404 km (0.075 R)
• M14: 21,840,840 km (0.095 R)
• M15: 23,345,047 km (0.047 R)
• M16: 25,275,907 km (0.096 R)
• M17: 29,552,910 km (0.071 R)
• M18: 33,195,917 km (0.092 R)
• M19: 35,633,016 km (0.084 R)
• M20: 41,109,794 km (0.096 R)
• M21: 41,737,058 km (0.1 R)
• M22: 42,116,289 km (0.091 R)
• M23: 42,881,930 km (0.041 R)

Planet 9 - Ice Giant

Semi-Major Axis: 5.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 820.1

Radius: 4.4

Gravity: 42.36 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 5.54 AU - 6.32 AU

Year: 9473 Days

Day: 17.1 Hours

Environment

Temp: -220 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 49,093,029 km

• M1: 54,753 km (0.106 R)
• M2: 216,917 km (0.086 R)
• M3: 926,609 km (0.057 R)
• M4: 1,201,869 km (0.089 R)
• M5: 1,473,689 km (0.075 R)
• M6: 2,478,687 km (0.068 R)
• M7: 4,147,152 km (0.077 R)
• M8: 5,113,554 km (0.095 R)
• M9: 5,546,042 km (0.079 R)
• M10: 5,788,839 km (0.09 R)
• M11: 6,792,043 km (0.065 R)
• M12: 8,080,679 km (0.059 R)
• M13: 9,184,112 km (0.062 R)
• M14: 12,433,827 km (0.099 R)
• M15: 18,358,202 km (0.099 R)
• M16: 19,926,287 km (0.069 R)
• M17: 23,058,417 km (0.108 R)
• M18: 25,256,609 km (0.07 R)
• M19: 28,094,181 km (0.102 R)
• M20: 29,328,064 km (0.09 R)
• M21: 34,858,847 km (0.12 R)
• M22: 42,231,778 km (0.104 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: 160 - 11,637 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit