🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.69

Radius: 1.69

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.51 AU - 0.57 AU

Year: 260 Days

Day: 25 Hours

Environment

Temp: -114 °C

Axial Tilt: 34.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 26,085,270 km

• M1: 72,854 km (0.119 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 640.6

Radius: 9.4

Gravity: 7.25 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.55 AU - 0.85 AU

Year: 384 Days

Day: 7.9 Hours

Environment

Temp: -133 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 26,085,270 km

• M1: 118,930 km (0.119 R)
• M2: 503,696 km (0.11 R)
• M3: 907,311 km (0.093 R)
• M4: 1,403,677 km (0.061 R)
• M5: 1,816,866 km (0.083 R)
• M6: 2,164,382 km (0.063 R)
• M7: 2,860,461 km (0.061 R)
• M8: 3,255,399 km (0.1 R)
• M9: 3,625,953 km (0.111 R)
• M10: 5,030,079 km (0.084 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.5

Radius: 9.5

Gravity: 6.2 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.84 AU - 1.22 AU

Year: 686 Days

Day: 6.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 26,085,270 km

• M1: 125,064 km (0.101 R)
• M2: 940,372 km (0.054 R)
• M3: 1,401,882 km (0.111 R)
• M4: 2,147,178 km (0.067 R)
• M5: 2,482,577 km (0.11 R)
• M6: 2,992,406 km (0.066 R)
• M7: 3,570,752 km (0.112 R)
• M8: 4,221,802 km (0.099 R)
• M9: 4,528,776 km (0.105 R)
• M10: 5,000,309 km (0.047 R)
• M11: 5,540,357 km (0.09 R)
• M12: 5,852,717 km (0.09 R)
• M13: 6,215,792 km (0.067 R)
• M14: 6,675,506 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 156.5

Radius: 9.4

Gravity: 1.77 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 1.11 AU - 1.31 AU

Year: 873 Days

Day: 13.6 Hours

Environment

Temp: -161 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 26,085,270 km

• M1: 117,135 km (0.079 R)
• M2: 512,074 km (0.072 R)
• M3: 866,471 km (0.075 R)
• M4: 1,202,318 km (0.118 R)
• M5: 1,948,961 km (0.096 R)
• M6: 2,871,082 km (0.085 R)
• M7: 3,501,937 km (0.089 R)
• M8: 4,603,426 km (0.091 R)
• M9: 5,022,749 km (0.111 R)
• M10: 5,434,891 km (0.088 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 994.3

Radius: 12.8

Gravity: 6.07 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 1.3 AU - 1.34 AU

Year: 995 Days

Day: 6.7 Hours

Environment

Temp: -182 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 26,085,270 km

• M1: 159,771 km (0.086 R)
• M2: 603,029 km (0.072 R)
• M3: 1,016,817 km (0.106 R)
• M4: 1,738,178 km (0.108 R)
• M5: 3,102,061 km (0.072 R)
• M6: 3,725,436 km (0.091 R)
• M7: 4,377,982 km (0.09 R)
• M8: 4,930,746 km (0.103 R)
• M9: 5,869,024 km (0.098 R)
• M10: 8,018,296 km (0.052 R)
• M11: 10,877,710 km (0.116 R)
• M12: 11,412,971 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 428.9

Radius: 10.6

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.36 AU - 1.48 AU

Year: 1110 Days

Day: 14 Hours

Environment

Temp: -179 °C

Axial Tilt: 140.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 26,085,270 km

• M1: 131,796 km (0.109 R)
• M2: 725,101 km (0.083 R)
• M3: 1,635,404 km (0.119 R)
• M4: 2,089,284 km (0.116 R)
• M5: 2,732,405 km (0.107 R)
• M6: 3,916,472 km (0.046 R)
• M7: 5,040,401 km (0.097 R)
• M8: 5,452,842 km (0.093 R)
• M9: 6,176,597 km (0.096 R)
• M10: 7,889,193 km (0.077 R)
• M11: 8,577,044 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 237.4

Radius: 11.4

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 3.33 AU - 4.47 AU

Year: 5052 Days

Day: 10.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 26,085,270 km

• M1: 141,819 km (0.065 R)
• M2: 786,137 km (0.079 R)
• M3: 1,199,177 km (0.103 R)
• M4: 1,876,107 km (0.035 R)
• M5: 2,401,195 km (0.113 R)
• M6: 3,022,924 km (0.069 R)
• M7: 3,390,636 km (0.096 R)
• M8: 3,768,819 km (0.088 R)
• M9: 4,770,526 km (0.107 R)
• M10: 5,247,295 km (0.099 R)
• M11: 6,103,892 km (0.08 R)
• M12: 8,600,531 km (0.036 R)
• M13: 10,248,950 km (0.025 R)
• M14: 11,250,957 km (0.092 R)
• M15: 11,669,532 km (0.105 R)
• M16: 16,879,277 km (0.09 R)
• M17: 20,603,666 km (0.114 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 214.1

Radius: 14.7

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 4.29 AU - 5.57 AU

Year: 7181 Days

Day: 8.6 Hours

Environment

Temp: -219 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 26,085,270 km

• M1: 182,809 km (0.099 R)
• M2: 681,418 km (0.115 R)
• M3: 1,156,691 km (0.056 R)
• M4: 1,660,985 km (0.067 R)
• M5: 2,737,043 km (0.12 R)
• M6: 4,634,991 km (0.113 R)
• M7: 5,502,658 km (0.102 R)
• M8: 7,263,425 km (0.103 R)
• M9: 9,611,214 km (0.057 R)
• M10: 10,594,222 km (0.026 R)
• M11: 12,380,570 km (0.094 R)
• M12: 16,543,580 km (0.102 R)
• M13: 17,063,881 km (0.062 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: 369 - 15,058 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit