🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.01

Radius: 1

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.43 AU - 0.59 AU

Year: 235 Days

Day: 32 Hours

Environment

Temp: -122 °C

Axial Tilt: 9.8 °

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: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.44 AU - 0.72 AU

Year: 285 Days

Day: 46.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 39.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 801.1

Radius: 11.9

Gravity: 5.66 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.75 AU - 0.83 AU

Year: 453 Days

Day: 11.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 94.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,629,476 km

• M1: 147,952 km (0.077 R)
• M2: 534,663 km (0.112 R)
• M3: 1,009,786 km (0.112 R)
• M4: 1,403,826 km (0.091 R)
• M5: 2,308,894 km (0.096 R)
• M6: 2,934,362 km (0.117 R)
• M7: 3,420,406 km (0.115 R)
• M8: 3,946,242 km (0.068 R)
• M9: 4,585,175 km (0.087 R)
• M10: 5,145,120 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942.9

Radius: 13.1

Gravity: 5.49 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.8 AU - 1.32 AU

Year: 705 Days

Day: 5.2 Hours

Environment

Temp: -163 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,629,476 km

• M1: 162,912 km (0.113 R)
• M2: 657,034 km (0.108 R)
• M3: 1,194,689 km (0.091 R)
• M4: 1,861,297 km (0.071 R)
• M5: 2,407,329 km (0.111 R)
• M6: 2,873,925 km (0.049 R)
• M7: 3,333,340 km (0.107 R)
• M8: 3,783,031 km (0.087 R)
• M9: 4,305,277 km (0.089 R)
• M10: 5,904,778 km (0.104 R)
• M11: 6,503,319 km (0.083 R)
• M12: 7,774,003 km (0.115 R)
• M13: 8,674,582 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 134.8

Radius: 12.6

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 1.03 AU - 1.27 AU

Year: 796 Days

Day: 10.8 Hours

Environment

Temp: -172 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 45,629,476 km

• M1: 156,629 km (0.099 R)
• M2: 1,681,929 km (0.071 R)
• M3: 2,494,844 km (0.097 R)
• M4: 3,816,541 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 408

Radius: 14.2

Gravity: 2.02 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.36 AU - 1.64 AU

Year: 1186 Days

Day: 7 Hours

Environment

Temp: -171 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 45,629,476 km

• M1: 178,171 km (0.079 R)
• M2: 641,476 km (0.104 R)
• M3: 1,125,425 km (0.08 R)
• M4: 1,607,878 km (0.088 R)
• M5: 2,378,606 km (0.115 R)
• M6: 3,262,730 km (0.11 R)
• M7: 3,744,734 km (0.092 R)
• M8: 5,275,868 km (0.113 R)
• M9: 5,802,303 km (0.102 R)
• M10: 6,428,370 km (0.097 R)
• M11: 8,218,458 km (0.11 R)
• M12: 9,340,293 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 449.9

Radius: 14.9

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 3.66 AU - 4.96 AU

Year: 5777 Days

Day: 6.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 45,629,476 km

• M1: 185,352 km (0.12 R)
• M2: 937,679 km (0.084 R)
• M3: 1,836,912 km (0.101 R)
• M4: 2,548,998 km (0.046 R)
• M5: 3,905,701 km (0.047 R)
• M6: 4,911,148 km (0.073 R)
• M7: 5,788,241 km (0.091 R)
• M8: 6,639,602 km (0.093 R)
• M9: 7,503,530 km (0.065 R)
• M10: 9,214,780 km (0.116 R)
• M11: 9,701,272 km (0.116 R)
• M12: 10,290,688 km (0.069 R)
• M13: 10,814,729 km (0.095 R)
• M14: 11,356,573 km (0.08 R)
• M15: 12,155,425 km (0.119 R)
• M16: 13,041,793 km (0.075 R)
• M17: 15,673,818 km (0.067 R)
• M18: 17,634,896 km (0.081 R)
• M19: 18,323,645 km (0.076 R)
• M20: 19,688,426 km (0.105 R)
• M21: 20,635,231 km (0.103 R)
• M22: 21,612,105 km (0.045 R)
• M23: 22,112,061 km (0.079 R)
• M24: 22,692,950 km (0.101 R)
• M25: 24,962,200 km (0.054 R)
• M26: 28,388,290 km (0.071 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 255.2

Radius: 4.4

Gravity: 13.18 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 7.17 AU - 9.27 AU

Year: 15217 Days

Day: 16.2 Hours

Environment

Temp: -235 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 45,629,476 km

• M1: 56,398 km (0.087 R)
• M2: 270,772 km (0.066 R)
• M3: 435,928 km (0.06 R)
• M4: 653,743 km (0.115 R)
• M5: 922,271 km (0.09 R)
• M6: 1,087,726 km (0.032 R)
• M7: 1,224,758 km (0.084 R)
• M8: 1,562,101 km (0.051 R)
• M9: 1,737,579 km (0.059 R)
• M10: 1,877,752 km (0.103 R)
• M11: 2,145,832 km (0.117 R)
• M12: 4,043,780 km (0.093 R)
• M13: 4,666,706 km (0.112 R)
• M14: 5,222,013 km (0.029 R)
• M15: 6,801,467 km (0.058 R)
• M16: 8,231,174 km (0.104 R)
• M17: 9,132,202 km (0.066 R)
• M18: 11,890,188 km (0.109 R)
• M19: 12,920,469 km (0.094 R)
• M20: 13,336,800 km (0.103 R)
• M21: 13,761,957 km (0.095 R)
• M22: 14,008,943 km (0.087 R)
• M23: 14,767,554 km (0.108 R)
• M24: 15,026,508 km (0.098 R)
• M25: 15,956,408 km (0.105 R)
• M26: 17,711,341 km (0.084 R)
• M27: 18,077,107 km (0.111 R)
• M28: 19,825,009 km (0.115 R)
• M29: 24,096,028 km (0.113 R)
• M30: 24,726,284 km (0.113 R)
• M31: 26,683,024 km (0.103 R)
• M32: 28,340,718 km (0.108 R)
• M33: 30,065,881 km (0.116 R)
• M34: 31,324,897 km (0.052 R)
• M35: 34,398,534 km (0.079 R)
• M36: 35,427,618 km (0.093 R)
• M37: 36,477,047 km (0.085 R)
• M38: 38,883,179 km (0.099 R)
• M39: 39,252,836 km (0.084 R)
• M40: 42,296,105 km (0.047 R)
• M41: 43,476,732 km (0.108 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 468 - 17,429 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit