🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.2

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.48 AU - 0.56 AU

Year: 246 Days

Day: 37.2 Hours

Environment

Temp: -122 °C

Axial Tilt: 11.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 679.8

Radius: 10.6

Gravity: 6.05 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.88 AU - 1.08 AU

Year: 636 Days

Day: 11.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 40,304,590 km

• M1: 132,394 km (0.08 R)
• M2: 924,365 km (0.115 R)
• M3: 1,578,108 km (0.025 R)
• M4: 2,076,867 km (0.084 R)
• M5: 4,698,869 km (0.093 R)
• M6: 5,235,626 km (0.117 R)
• M7: 6,352,524 km (0.097 R)
• M8: 6,862,054 km (0.064 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 40.1

Radius: 13.9

Gravity: 0.21 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.11 AU - 1.25 AU

Year: 841 Days

Day: 6.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 40,304,590 km

• M1: 175,030 km (0.096 R)
• M2: 805,734 km (0.085 R)
• M3: 1,284,747 km (0.096 R)
• M4: 1,999,525 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 525.2

Radius: 9.1

Gravity: 6.34 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.26 AU - 1.32 AU

Year: 961 Days

Day: 13.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 40,304,590 km

• M1: 113,994 km (0.063 R)
• M2: 433,983 km (0.056 R)
• M3: 914,342 km (0.111 R)
• M4: 1,391,559 km (0.067 R)
• M5: 1,887,177 km (0.115 R)
• M6: 3,285,618 km (0.104 R)
• M7: 3,650,188 km (0.045 R)
• M8: 4,263,988 km (0.066 R)
• M9: 4,733,576 km (0.105 R)
• M10: 5,163,071 km (0.08 R)
• M11: 5,997,827 km (0.089 R)
• M12: 6,330,383 km (0.026 R)
• M13: 7,473,760 km (0.117 R)
• M14: 8,107,157 km (0.091 R)
• M15: 8,592,303 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 192.8

Radius: 8.3

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 2.38 AU - 3.9 AU

Year: 3650 Days

Day: 11.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,304,590 km

• M1: 103,223 km (0.112 R)
• M2: 416,929 km (0.026 R)
• M3: 1,565,542 km (0.087 R)
• M4: 2,242,771 km (0.11 R)
• M5: 3,024,271 km (0.062 R)
• M6: 3,865,609 km (0.063 R)
• M7: 4,184,851 km (0.106 R)
• M8: 4,460,709 km (0.078 R)
• M9: 5,712,694 km (0.08 R)
• M10: 6,003,512 km (0.074 R)
• M11: 7,156,164 km (0.031 R)
• M12: 7,437,557 km (0.075 R)
• M13: 11,340,865 km (0.071 R)
• M14: 11,957,956 km (0.066 R)
• M15: 13,301,046 km (0.088 R)
• M16: 13,943,718 km (0.055 R)
• M17: 15,570,446 km (0.076 R)
• M18: 15,996,052 km (0.04 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 584.9

Radius: 10

Gravity: 5.85 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 4.28 AU - 5.54 AU

Year: 7137 Days

Day: 14.5 Hours

Environment

Temp: -224 °C

Axial Tilt: 128 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 40,304,590 km

• M1: 124,615 km (0.077 R)
• M2: 676,482 km (0.118 R)
• M3: 1,151,305 km (0.104 R)
• M4: 1,827,039 km (0.05 R)
• M5: 2,157,800 km (0.037 R)
• M6: 2,902,797 km (0.08 R)
• M7: 3,578,830 km (0.114 R)
• M8: 4,152,089 km (0.086 R)
• M9: 5,010,631 km (0.117 R)
• M10: 5,331,818 km (0.092 R)
• M11: 5,697,734 km (0.108 R)
• M12: 6,514,538 km (0.085 R)
• M13: 6,897,958 km (0.043 R)
• M14: 8,060,034 km (0.046 R)
• M15: 8,502,245 km (0.113 R)
• M16: 9,523,550 km (0.11 R)
• M17: 10,018,121 km (0.107 R)
• M18: 13,409,504 km (0.072 R)
• M19: 14,204,168 km (0.098 R)
• M20: 15,762,828 km (0.093 R)
• M21: 16,776,952 km (0.069 R)
• M22: 18,241,516 km (0.096 R)
• M23: 18,655,303 km (0.038 R)
• M24: 20,521,537 km (0.116 R)
• M25: 21,271,321 km (0.086 R)
• M26: 22,985,114 km (0.083 R)
• M27: 27,850,636 km (0.117 R)
• M28: 29,142,862 km (0.111 R)
• M29: 30,765,251 km (0.086 R)
• M30: 34,818,755 km (0.095 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 661.5

Radius: 13.7

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 4.08 AU - 6.38 AU

Year: 7846 Days

Day: 7.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 40,304,590 km

• M1: 200,611 km (0.059 R)
• M2: 639,830 km (0.108 R)
• M3: 1,089,671 km (0.1 R)
• M4: 1,560,904 km (0.04 R)
• M5: 2,514,591 km (0.115 R)
• M6: 3,901,213 km (0.079 R)
• M7: 4,692,586 km (0.092 R)
• M8: 5,339,148 km (0.113 R)
• M9: 6,179,290 km (0.058 R)
• M10: 7,180,847 km (0.119 R)
• M11: 8,371,198 km (0.071 R)
• M12: 8,839,439 km (0.072 R)
• M13: 10,063,150 km (0.086 R)
• M14: 11,294,340 km (0.097 R)
• M15: 17,442,962 km (0.114 R)
• M16: 18,208,903 km (0.067 R)
• M17: 18,997,284 km (0.061 R)
• M18: 21,028,823 km (0.118 R)
• M19: 29,820,092 km (0.081 R)
• M20: 31,320,558 km (0.107 R)
• M21: 31,831,884 km (0.117 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 297 - 19,069 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit