🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.03

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 0.52 AU - 0.78 AU

Year: 333 Days

Day: 45.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 28.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 64,217,415 km

• M1: 182,360 km (0.051 R)
• M2: 288,873 km (0.057 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.07

Radius: 1.03

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.55 AU - 0.75 AU

Year: 333 Days

Day: 21.2 Hours

Environment

Temp: -129 °C

Axial Tilt: 8.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,217,415 km

• M1: 84,672 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 444.2

Radius: 11.6

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.77 AU - 0.79 AU

Year: 438 Days

Day: 14.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 64,217,415 km

• M1: 144,362 km (0.115 R)
• M2: 505,042 km (0.062 R)
• M3: 911,649 km (0.074 R)
• M4: 1,451,698 km (0.074 R)
• M5: 2,109,629 km (0.065 R)
• M6: 2,662,094 km (0.074 R)
• M7: 3,135,571 km (0.1 R)
• M8: 3,512,708 km (0.098 R)
• M9: 3,883,112 km (0.035 R)
• M10: 4,319,639 km (0.056 R)
• M11: 4,860,584 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 791.9

Radius: 13.4

Gravity: 4.41 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.16 AU - 1.34 AU

Year: 889 Days

Day: 12.3 Hours

Environment

Temp: -174 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 64,217,415 km

• M1: 166,652 km (0.074 R)
• M2: 711,487 km (0.108 R)
• M3: 1,131,708 km (0.098 R)
• M4: 1,796,670 km (0.101 R)
• M5: 2,859,414 km (0.113 R)
• M6: 3,332,891 km (0.05 R)
• M7: 4,078,038 km (0.069 R)
• M8: 4,805,532 km (0.094 R)
• M9: 6,542,214 km (0.117 R)
• M10: 7,181,595 km (0.036 R)
• M11: 7,812,450 km (0.08 R)
• M12: 9,929,110 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 663.3

Radius: 9.9

Gravity: 6.77 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 2.69 AU - 2.93 AU

Year: 2995 Days

Day: 10.7 Hours

Environment

Temp: -210 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 64,217,415 km

• M1: 123,119 km (0.081 R)
• M2: 715,975 km (0.094 R)
• M3: 1,174,942 km (0.111 R)
• M4: 1,743,264 km (0.074 R)
• M5: 3,177,010 km (0.108 R)
• M6: 3,849,303 km (0.099 R)
• M7: 4,240,800 km (0.055 R)
• M8: 5,008,238 km (0.119 R)
• M9: 5,476,030 km (0.12 R)
• M10: 6,357,610 km (0.094 R)
• M11: 7,644,750 km (0.115 R)
• M12: 7,967,583 km (0.089 R)
• M13: 9,720,570 km (0.11 R)
• M14: 12,721,354 km (0.042 R)
• M15: 15,051,341 km (0.085 R)
• M16: 17,540,500 km (0.12 R)
• M17: 18,274,876 km (0.114 R)
• M18: 20,725,139 km (0.047 R)
• M19: 21,101,228 km (0.068 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.6

Radius: 9.6

Gravity: 6.25 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 2.45 AU - 3.31 AU

Year: 3108 Days

Day: 10.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 64,217,415 km

• M1: 119,678 km (0.096 R)
• M2: 507,735 km (0.079 R)
• M3: 1,604,736 km (0.119 R)
• M4: 1,999,525 km (0.106 R)
• M5: 2,330,585 km (0.119 R)
• M6: 3,404,548 km (0.03 R)
• M7: 4,688,397 km (0.106 R)
• M8: 5,132,553 km (0.072 R)
• M9: 5,502,808 km (0.101 R)
• M10: 6,521,420 km (0.119 R)
• M11: 6,956,451 km (0.102 R)
• M12: 8,079,931 km (0.092 R)
• M13: 8,789,025 km (0.101 R)
• M14: 10,330,780 km (0.094 R)
• M15: 11,288,655 km (0.102 R)
• M16: 12,392,089 km (0.101 R)
• M17: 13,288,629 km (0.12 R)
• M18: 13,706,007 km (0.119 R)
• M19: 14,960,834 km (0.106 R)
• M20: 20,078,577 km (0.045 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 992.1

Radius: 6.3

Gravity: 25 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 5.07 AU - 7.81 AU

Year: 10391 Days

Day: 18.4 Hours

Environment

Temp: -229 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 64,217,415 km

• M1: 78,988 km (0.093 R)
• M2: 293,361 km (0.037 R)
• M3: 516,113 km (0.085 R)
• M4: 905,516 km (0.088 R)
• M5: 1,378,096 km (0.087 R)
• M6: 1,865,037 km (0.085 R)
• M7: 2,359,757 km (0.114 R)
• M8: 2,802,267 km (0.111 R)
• M9: 4,343,275 km (0.102 R)
• M10: 4,714,876 km (0.108 R)
• M11: 6,070,382 km (0.101 R)
• M12: 6,857,866 km (0.091 R)
• M13: 7,318,926 km (0.101 R)
• M14: 8,729,933 km (0.096 R)
• M15: 8,973,479 km (0.107 R)
• M16: 12,442,653 km (0.044 R)
• M17: 13,064,831 km (0.119 R)
• M18: 14,371,269 km (0.113 R)
• M19: 15,834,336 km (0.113 R)
• M20: 17,013,766 km (0.084 R)
• M21: 17,624,873 km (0.112 R)
• M22: 21,338,191 km (0.087 R)
• M23: 22,500,866 km (0.037 R)
• M24: 23,611,032 km (0.099 R)
• M25: 26,749,146 km (0.035 R)
• M26: 33,362,270 km (0.109 R)
• M27: 35,540,116 km (0.069 R)
• M28: 38,069,217 km (0.079 R)
• M29: 38,458,621 km (0.075 R)
• M30: 42,361,180 km (0.051 R)
• M31: 44,050,290 km (0.108 R)
• M32: 44,479,636 km (0.119 R)
• M33: 45,783,980 km (0.064 R)
• M34: 52,851,282 km (0.069 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 574.1

Radius: 3.7

Gravity: 41.94 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 7.26 AU - 10.58 AU

Year: 16939 Days

Day: 23.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 64,217,415 km

• M1: 46,076 km (0.079 R)
• M2: 262,544 km (0.108 R)
• M3: 536,608 km (0.1 R)
• M4: 729,290 km (0.091 R)
• M5: 1,295,069 km (0.079 R)
• M6: 1,469,799 km (0.098 R)
• M7: 1,693,448 km (0.085 R)
• M8: 1,976,337 km (0.081 R)
• M9: 2,352,127 km (0.084 R)
• M10: 2,750,506 km (0.119 R)
• M11: 4,091,651 km (0.101 R)
• M12: 4,902,921 km (0.108 R)
• M13: 5,148,112 km (0.075 R)
• M14: 6,050,935 km (0.075 R)
• M15: 6,333,076 km (0.11 R)
• M16: 9,173,491 km (0.114 R)
• M17: 12,696,521 km (0.049 R)
• M18: 13,768,838 km (0.064 R)
• M19: 14,116,055 km (0.081 R)
• M20: 14,972,802 km (0.06 R)
• M21: 15,118,959 km (0.109 R)
• M22: 24,298,434 km (0.116 R)
• M23: 27,663,339 km (0.079 R)
• M24: 27,883,398 km (0.08 R)
• M25: 29,571,310 km (0.049 R)
• M26: 32,046,856 km (0.111 R)
• M27: 34,657,040 km (0.095 R)
• M28: 38,080,587 km (0.105 R)
• M29: 42,741,757 km (0.107 R)
• M30: 52,668,174 km (0.115 R)
• M31: 56,114,012 km (0.079 R)
• M32: 56,466,614 km (0.078 R)
• M33: 60,443,673 km (0.096 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 191 - 17,826 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit