🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.53

Radius: 1.19

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.6 AU - 0.78 AU

Year: 201 Days

Day: 30.1 Hours

Environment

Temp: 217 °C

Axial Tilt: 33 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 86,149,729 km

• M1: 447,148 km (0.101 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.66

Radius: 1.22

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.75 AU - 0.75 AU

Year: 228 Days

Day: 27.4 Hours

Environment

Temp: 182 °C

Axial Tilt: 28.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.07 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.23

Radius: 1.38

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 1.03 AU - 1.11 AU

Year: 389 Days

Day: 17.4 Hours

Environment

Temp: 95 °C

Axial Tilt: 21.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 86,149,729 km

• M1: 32,164 km (0.099 R)
• M2: 323,431 km (0.039 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.15

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 1.68 AU - 2.36 AU

Year: 1009 Days

Day: 40.2 Hours

Environment

Temp: -58 °C

Axial Tilt: 9.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 86,149,729 km

• M1: 121,773 km (0.079 R)
• M2: 370,105 km (0.117 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 2.27 AU - 3.09 AU

Year: 1542 Days

Day: 43 Hours

Environment

Temp: -77 °C

Axial Tilt: 178.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.8

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 2.98 AU - 4.62 AU

Year: 2603 Days

Day: 33.9 Hours

Environment

Temp: -110 °C

Axial Tilt: 25 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 9.85 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 15.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 368.5

Radius: 4.5

Gravity: 18.2 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 14.82 AU - 16.98 AU

Year: 22283 Days

Day: 23.9 Hours

Environment

Temp: -186 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 86,149,729 km

• M1: 57,146 km (0.116 R)
• M2: 476,768 km (0.098 R)
• M3: 645,365 km (0.117 R)
• M4: 997,668 km (0.089 R)
• M5: 1,183,918 km (0.108 R)
• M6: 1,594,265 km (0.092 R)
• M7: 2,599,263 km (0.103 R)
• M8: 2,784,615 km (0.1 R)
• M9: 3,504,480 km (0.047 R)
• M10: 3,937,416 km (0.092 R)
• M11: 4,771,125 km (0.095 R)
• M12: 5,677,987 km (0.111 R)
• M13: 8,512,717 km (0.119 R)
• M14: 11,663,398 km (0.09 R)
• M15: 13,155,936 km (0.058 R)
• M16: 13,842,740 km (0.101 R)
• M17: 16,123,958 km (0.096 R)
• M18: 24,040,976 km (0.109 R)
• M19: 26,119,489 km (0.103 R)
• M20: 30,748,795 km (0.054 R)
• M21: 32,570,598 km (0.089 R)
• M22: 36,694,712 km (0.117 R)
• M23: 41,153,776 km (0.089 R)
• M24: 45,960,505 km (0.073 R)
• M25: 52,308,242 km (0.107 R)
• M26: 54,025,027 km (0.109 R)
• M27: 57,029,102 km (0.084 R)
• M28: 60,516,378 km (0.079 R)
• M29: 63,560,994 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 224.7

Radius: 5.3

Gravity: 8 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 12.41 AU - 19.99 AU

Year: 22917 Days

Day: 24.2 Hours

Environment

Temp: -187 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 86,149,729 km

• M1: 66,122 km (0.068 R)
• M2: 233,672 km (0.083 R)
• M3: 472,131 km (0.103 R)
• M4: 764,296 km (0.077 R)
• M5: 1,017,565 km (0.08 R)
• M6: 1,195,586 km (0.104 R)
• M7: 1,422,676 km (0.108 R)
• M8: 2,128,479 km (0.105 R)
• M9: 2,633,671 km (0.094 R)
• M10: 3,906,898 km (0.084 R)
• M11: 4,318,143 km (0.074 R)
• M12: 5,799,461 km (0.032 R)
• M13: 6,533,089 km (0.065 R)
• M14: 7,154,518 km (0.103 R)
• M15: 10,417,846 km (0.109 R)
• M16: 10,863,797 km (0.052 R)
• M17: 11,091,485 km (0.112 R)
• M18: 11,973,963 km (0.091 R)
• M19: 12,463,148 km (0.098 R)
• M20: 14,011,187 km (0.098 R)
• M21: 14,349,129 km (0.088 R)
• M22: 15,111,629 km (0.058 R)
• M23: 18,112,712 km (0.113 R)
• M24: 18,513,784 km (0.076 R)
• M25: 21,667,456 km (0.109 R)
• M26: 32,646,893 km (0.111 R)
• M27: 34,205,703 km (0.09 R)
• M28: 35,939,243 km (0.044 R)
• M29: 56,263,909 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 781

Radius: 7.8

Gravity: 12.84 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 14.4 AU - 18.36 AU

Year: 23300 Days

Day: 19.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 86,149,729 km

• M1: 97,538 km (0.095 R)
• M2: 370,554 km (0.101 R)
• M3: 618,288 km (0.053 R)
• M4: 934,687 km (0.075 R)
• M5: 1,194,689 km (0.085 R)
• M6: 1,885,681 km (0.094 R)
• M7: 2,331,034 km (0.064 R)
• M8: 3,738,451 km (0.115 R)
• M9: 4,232,872 km (0.065 R)
• M10: 5,152,899 km (0.105 R)
• M11: 5,514,926 km (0.082 R)
• M12: 7,383,253 km (0.109 R)
• M13: 7,843,716 km (0.12 R)
• M14: 8,765,986 km (0.115 R)
• M15: 9,698,131 km (0.065 R)
• M16: 10,824,154 km (0.114 R)
• M17: 12,529,420 km (0.105 R)
• M18: 14,249,646 km (0.04 R)
• M19: 16,463,246 km (0.084 R)
• M20: 17,160,821 km (0.108 R)
• M21: 19,564,410 km (0.088 R)
• M22: 20,446,139 km (0.101 R)
• M23: 21,354,198 km (0.043 R)
• M24: 26,183,667 km (0.117 R)
• M25: 31,428,418 km (0.1 R)
• M26: 32,636,720 km (0.117 R)
• M27: 33,046,319 km (0.114 R)
• M28: 37,780,793 km (0.09 R)
• M29: 41,654,929 km (0.116 R)
• M30: 47,337,254 km (0.108 R)
• M31: 49,460,198 km (0.114 R)
• M32: 57,191,565 km (0.102 R)
• M33: 62,910,542 km (0.043 R)
• M34: 66,562,376 km (0.096 R)
• M35: 68,328,827 km (0.075 R)
• M36: 80,082,732 km (0.108 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 489.2

Radius: 6.7

Gravity: 10.9 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 14.88 AU - 22.6 AU

Year: 28512 Days

Day: 17.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 86,149,729 km

• M1: 97,687 km (0.07 R)
• M2: 1,273,078 km (0.11 R)
• M3: 2,270,447 km (0.096 R)
• M4: 2,722,532 km (0.056 R)
• M5: 4,621,976 km (0.075 R)
• M6: 5,468,550 km (0.069 R)
• M7: 6,102,396 km (0.081 R)
• M8: 7,616,626 km (0.119 R)
• M9: 8,031,162 km (0.118 R)
• M10: 16,445,294 km (0.096 R)
• M11: 18,304,347 km (0.083 R)
• M12: 23,719,341 km (0.084 R)
• M13: 33,702,455 km (0.061 R)
• M14: 42,195,875 km (0.056 R)
• M15: 43,328,181 km (0.118 R)
• M16: 44,646,886 km (0.118 R)
• M17: 47,018,611 km (0.111 R)
• M18: 50,369,902 km (0.098 R)
• M19: 77,425,425 km (0.103 R)
• M20: 79,120,668 km (0.025 R)
• M21: 85,891,767 km (0.06 R)

Kuiper Belt

Range: 31.2 - 52.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 192 - 10,488 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit