🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.8

Radius: 0.91

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.44 AU - 0.7 AU

Year: 278 Days

Day: 37.7 Hours

Environment

Temp: -122 °C

Axial Tilt: 16 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.06

Radius: 1.56

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.46 AU - 0.7 AU

Year: 285 Days

Day: 39.2 Hours

Environment

Temp: -133 °C

Axial Tilt: 28.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 40,225,387 km

• M1: 189,241 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.2

Radius: 12.8

Gravity: 1.98 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.9 AU - 1.02 AU

Year: 607 Days

Day: 6 Hours

Environment

Temp: -149 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 40,225,387 km

• M1: 160,070 km (0.091 R)
• M2: 653,743 km (0.056 R)
• M3: 1,092,962 km (0.111 R)
• M4: 1,529,339 km (0.071 R)
• M5: 2,297,973 km (0.114 R)
• M6: 2,761,577 km (0.1 R)
• M7: 3,208,575 km (0.089 R)
• M8: 4,089,108 km (0.072 R)
• M9: 4,746,740 km (0.082 R)
• M10: 5,376,996 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 48.7

Radius: 13.2

Gravity: 0.28 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.75 AU - 1.81 AU

Year: 1533 Days

Day: 13 Hours

Environment

Temp: -183 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 40,225,387 km

• M1: 167,849 km (0.057 R)
• M2: 991,235 km (0.091 R)
• M3: 1,449,155 km (0.105 R)
• M4: 2,067,143 km (0.07 R)
• M5: 3,739,648 km (0.119 R)
• M6: 4,245,438 km (0.065 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 393.1

Radius: 13.6

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 1.57 AU - 2.05 AU

Year: 1572 Days

Day: 8 Hours

Environment

Temp: -181 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 40,225,387 km

• M1: 169,195 km (0.041 R)
• M2: 642,822 km (0.064 R)
• M3: 1,190,350 km (0.088 R)
• M4: 1,676,992 km (0.116 R)
• M5: 2,166,476 km (0.067 R)
• M6: 2,920,749 km (0.084 R)
• M7: 3,352,937 km (0.095 R)
• M8: 4,074,298 km (0.118 R)
• M9: 4,544,634 km (0.053 R)
• M10: 5,188,653 km (0.039 R)
• M11: 6,200,981 km (0.067 R)
• M12: 8,148,895 km (0.07 R)
• M13: 8,757,459 km (0.101 R)
• M14: 10,034,876 km (0.065 R)
• M15: 10,964,178 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842.3

Radius: 14.3

Gravity: 4.12 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 1.71 AU - 2.43 AU

Year: 1923 Days

Day: 7.4 Hours

Environment

Temp: -181 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 40,225,387 km

• M1: 180,265 km (0.06 R)
• M2: 634,893 km (0.1 R)
• M3: 1,310,926 km (0.094 R)
• M4: 2,061,907 km (0.113 R)
• M5: 2,613,774 km (0.112 R)
• M6: 3,103,557 km (0.108 R)
• M7: 5,407,963 km (0.078 R)
• M8: 5,910,612 km (0.09 R)
• M9: 6,576,472 km (0.116 R)
• M10: 7,847,007 km (0.082 R)
• M11: 8,399,023 km (0.116 R)
• M12: 8,878,783 km (0.06 R)
• M13: 9,719,224 km (0.046 R)
• M14: 10,176,844 km (0.056 R)
• M15: 10,871,576 km (0.119 R)
• M16: 13,020,400 km (0.045 R)
• M17: 14,647,726 km (0.093 R)
• M18: 16,112,588 km (0.081 R)
• M19: 17,006,884 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 953.7

Radius: 9.3

Gravity: 11.03 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 1.69 AU - 2.75 AU

Year: 2136 Days

Day: 9.3 Hours

Environment

Temp: -194 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 40,225,387 km

• M1: 115,639 km (0.102 R)
• M2: 430,842 km (0.116 R)
• M3: 1,017,415 km (0.072 R)
• M4: 1,824,795 km (0.116 R)
• M5: 2,365,591 km (0.11 R)
• M6: 2,945,432 km (0.11 R)
• M7: 3,882,214 km (0.111 R)
• M8: 4,262,642 km (0.098 R)
• M9: 4,711,884 km (0.108 R)
• M10: 5,192,542 km (0.078 R)
• M11: 5,756,077 km (0.034 R)
• M12: 6,278,922 km (0.062 R)
• M13: 7,180,847 km (0.097 R)
• M14: 8,328,712 km (0.079 R)
• M15: 10,031,285 km (0.117 R)
• M16: 10,405,429 km (0.106 R)
• M17: 11,422,097 km (0.101 R)
• M18: 12,460,605 km (0.025 R)
• M19: 13,560,897 km (0.07 R)
• M20: 14,581,604 km (0.093 R)
• M21: 15,953,865 km (0.065 R)
• M22: 17,571,317 km (0.073 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 16.7

Radius: 11.8

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 2.07 AU - 2.85 AU

Year: 2491 Days

Day: 6.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 40,225,387 km

• M1: 154,834 km (0.1 R)
• M2: 590,612 km (0.095 R)
• M3: 980,764 km (0.117 R)
• M4: 1,544,299 km (0.116 R)
• M5: 2,145,832 km (0.117 R)
• M6: 2,563,509 km (0.095 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 571.7

Radius: 11

Gravity: 4.72 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 2.22 AU - 2.76 AU

Year: 2537 Days

Day: 13.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 42.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 40,225,387 km

• M1: 136,732 km (0.063 R)
• M2: 793,617 km (0.098 R)
• M3: 1,243,009 km (0.054 R)
• M4: 1,772,436 km (0.106 R)
• M5: 2,146,729 km (0.107 R)
• M6: 3,305,814 km (0.087 R)
• M7: 3,823,123 km (0.116 R)
• M8: 4,435,278 km (0.063 R)
• M9: 4,798,053 km (0.074 R)
• M10: 5,226,950 km (0.112 R)
• M11: 5,931,256 km (0.11 R)
• M12: 6,372,720 km (0.117 R)
• M13: 6,948,522 km (0.035 R)
• M14: 7,830,850 km (0.039 R)
• M15: 8,235,662 km (0.1 R)
• M16: 11,793,997 km (0.061 R)
• M17: 13,308,975 km (0.091 R)
• M18: 14,481,223 km (0.107 R)
• M19: 17,764,598 km (0.093 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 108.4

Radius: 4.2

Gravity: 6.15 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 8.91 AU - 10.37 AU

Year: 19326 Days

Day: 19 Hours

Environment

Temp: -226 °C

Axial Tilt: 78.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 40,225,387 km

• M1: 53,406 km (0.111 R)
• M2: 298,448 km (0.084 R)
• M3: 650,302 km (0.108 R)
• M4: 1,284,148 km (0.053 R)
• M5: 1,864,737 km (0.087 R)
• M6: 2,120,251 km (0.1 R)
• M7: 2,701,289 km (0.12 R)
• M8: 5,571,473 km (0.081 R)
• M9: 6,342,950 km (0.07 R)
• M10: 6,919,949 km (0.058 R)
• M11: 7,145,094 km (0.075 R)
• M12: 7,531,206 km (0.102 R)
• M13: 7,729,423 km (0.11 R)
• M14: 8,860,383 km (0.073 R)
• M15: 11,654,422 km (0.086 R)
• M16: 14,984,321 km (0.068 R)
• M17: 17,272,869 km (0.112 R)
• M18: 20,620,870 km (0.101 R)
• M19: 21,960,219 km (0.108 R)
• M20: 22,446,413 km (0.112 R)
• M21: 24,723,591 km (0.118 R)
• M22: 24,985,687 km (0.103 R)
• M23: 33,632,892 km (0.075 R)
• M24: 34,713,737 km (0.102 R)
• M25: 38,561,694 km (0.115 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 342 - 12,162 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit