🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.16

Radius: 1.06

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.54 AU - 0.56 AU

Year: 263 Days

Day: 19.2 Hours

Environment

Temp: -126 °C

Axial Tilt: 170.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 43.7

Radius: 11

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.75 AU - 0.77 AU

Year: 428 Days

Day: 7.2 Hours

Environment

Temp: -149 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 95,026,603 km

• M1: 138,528 km (0.038 R)
• M2: 538,852 km (0.09 R)
• M3: 926,310 km (0.117 R)
• M4: 1,296,116 km (0.071 R)
• M5: 1,888,374 km (0.075 R)
• M6: 2,277,179 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330.2

Radius: 10

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 1.89 AU - 2.67 AU

Year: 2223 Days

Day: 5.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 95,026,603 km

• M1: 124,316 km (0.083 R)
• M2: 464,651 km (0.119 R)
• M3: 794,365 km (0.09 R)
• M4: 1,437,336 km (0.098 R)
• M5: 2,288,399 km (0.066 R)
• M6: 3,640,315 km (0.055 R)
• M7: 5,057,455 km (0.093 R)
• M8: 5,506,847 km (0.114 R)
• M9: 6,913,965 km (0.107 R)
• M10: 8,636,734 km (0.119 R)
• M11: 10,389,572 km (0.086 R)
• M12: 12,216,013 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811.9

Radius: 14.7

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 2.61 AU - 3.47 AU

Year: 3422 Days

Day: 6.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 95,026,603 km

• M1: 183,108 km (0.106 R)
• M2: 771,327 km (0.112 R)
• M3: 1,294,321 km (0.08 R)
• M4: 2,427,824 km (0.077 R)
• M5: 2,890,380 km (0.099 R)
• M6: 4,649,951 km (0.099 R)
• M7: 5,165,764 km (0.082 R)
• M8: 6,641,098 km (0.091 R)
• M9: 7,297,983 km (0.108 R)
• M10: 10,617,858 km (0.065 R)
• M11: 11,829,152 km (0.111 R)
• M12: 14,525,654 km (0.109 R)
• M13: 18,687,018 km (0.092 R)
• M14: 19,555,134 km (0.043 R)
• M15: 20,127,346 km (0.03 R)
• M16: 24,232,611 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 448.9

Radius: 13.5

Gravity: 2.46 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 3.43 AU - 4.09 AU

Year: 4708 Days

Day: 9.8 Hours

Environment

Temp: -216 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 95,026,603 km

• M1: 193,729 km (0.11 R)
• M2: 705,653 km (0.084 R)
• M3: 1,508,844 km (0.051 R)
• M4: 2,157,800 km (0.104 R)
• M5: 2,816,330 km (0.119 R)
• M6: 6,278,024 km (0.044 R)
• M7: 10,938,896 km (0.1 R)
• M8: 11,593,685 km (0.099 R)
• M9: 16,031,207 km (0.077 R)
• M10: 16,762,441 km (0.112 R)
• M11: 19,027,802 km (0.104 R)
• M12: 21,288,675 km (0.1 R)
• M13: 22,034,869 km (0.069 R)
• M14: 25,045,376 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 689.8

Radius: 9

Gravity: 8.52 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 4.82 AU - 5.9 AU

Year: 8012 Days

Day: 8.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 95,026,603 km

• M1: 112,498 km (0.089 R)
• M2: 540,198 km (0.075 R)
• M3: 1,205,759 km (0.114 R)
• M4: 1,530,835 km (0.057 R)
• M5: 1,930,112 km (0.065 R)
• M6: 2,379,953 km (0.101 R)
• M7: 2,878,113 km (0.11 R)
• M8: 4,294,805 km (0.112 R)
• M9: 4,626,314 km (0.117 R)
• M10: 4,974,877 km (0.069 R)
• M11: 5,857,056 km (0.042 R)
• M12: 6,988,913 km (0.096 R)
• M13: 7,567,109 km (0.028 R)
• M14: 7,888,296 km (0.095 R)
• M15: 8,731,280 km (0.098 R)
• M16: 9,265,195 km (0.051 R)
• M17: 10,896,709 km (0.119 R)
• M18: 11,306,906 km (0.039 R)
• M19: 14,047,988 km (0.052 R)
• M20: 15,284,265 km (0.12 R)
• M21: 15,604,255 km (0.04 R)
• M22: 17,066,125 km (0.11 R)
• M23: 20,802,482 km (0.096 R)
• M24: 21,116,787 km (0.077 R)
• M25: 22,985,862 km (0.104 R)
• M26: 25,406,954 km (0.116 R)
• M27: 25,947,003 km (0.093 R)
• M28: 28,376,323 km (0.084 R)
• M29: 28,665,944 km (0.081 R)
• M30: 32,720,196 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 32.8

Radius: 5.6

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 6.39 AU - 6.55 AU

Year: 10626 Days

Day: 21.8 Hours

Environment

Temp: -224 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 95,026,603 km

• M1: 195,375 km (0.089 R)
• M2: 724,353 km (0.118 R)
• M3: 919,129 km (0.091 R)
• M4: 1,295,966 km (0.049 R)
• M5: 1,770,341 km (0.059 R)
• M6: 2,381,149 km (0.052 R)
• M7: 2,928,528 km (0.08 R)
• M8: 3,291,602 km (0.073 R)
• M9: 4,351,952 km (0.104 R)
• M10: 4,584,277 km (0.109 R)
• M11: 5,622,486 km (0.104 R)
• M12: 7,297,384 km (0.119 R)
• M13: 7,717,156 km (0.092 R)
• M14: 9,244,849 km (0.108 R)
• M15: 9,664,920 km (0.119 R)
• M16: 10,281,862 km (0.115 R)
• M17: 10,924,684 km (0.074 R)
• M18: 16,497,204 km (0.042 R)
• M19: 17,271,972 km (0.084 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 964.5

Radius: 3.2

Gravity: 94.19 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 9.22 AU - 12.76 AU

Year: 23524 Days

Day: 17.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 95,026,603 km

• M1: 98,136 km (0.091 R)
• M2: 248,482 km (0.081 R)
• M3: 506,538 km (0.105 R)
• M4: 651,050 km (0.102 R)
• M5: 932,144 km (0.101 R)
• M6: 1,180,477 km (0.115 R)
• M7: 2,215,544 km (0.08 R)
• M8: 3,330,647 km (0.067 R)
• M9: 3,906,449 km (0.108 R)
• M10: 6,491,052 km (0.112 R)
• M11: 7,280,180 km (0.082 R)
• M12: 7,487,074 km (0.115 R)
• M13: 9,165,413 km (0.109 R)
• M14: 9,467,451 km (0.116 R)
• M15: 9,838,753 km (0.062 R)
• M16: 10,544,556 km (0.049 R)
• M17: 11,078,620 km (0.067 R)
• M18: 11,700,648 km (0.036 R)
• M19: 11,984,585 km (0.06 R)
• M20: 13,395,741 km (0.073 R)
• M21: 18,381,838 km (0.111 R)
• M22: 21,599,988 km (0.118 R)
• M23: 25,646,909 km (0.092 R)
• M24: 27,472,452 km (0.077 R)
• M25: 27,597,067 km (0.116 R)
• M26: 36,537,634 km (0.1 R)
• M27: 45,638,122 km (0.114 R)
• M28: 52,221,176 km (0.071 R)
• M29: 53,765,176 km (0.091 R)
• M30: 55,538,359 km (0.066 R)
• M31: 62,373,486 km (0.118 R)
• M32: 64,110,915 km (0.063 R)
• M33: 69,747,913 km (0.067 R)
• M34: 71,148,149 km (0.032 R)
• M35: 73,764,017 km (0.057 R)
• M36: 74,973,815 km (0.086 R)
• M37: 82,771,754 km (0.096 R)
• M38: 90,539,773 km (0.068 R)
• M39: 91,647,994 km (0.064 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 278 - 12,846 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit