🌌 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: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.46 AU - 0.58 AU

Year: 246 Days

Day: 37.1 Hours

Environment

Temp: -108 °C

Axial Tilt: 29 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.41

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.41 AU - 0.63 AU

Year: 246 Days

Day: 16.7 Hours

Environment

Temp: -113 °C

Axial Tilt: 26.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 629.1

Radius: 11.6

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.76 AU - 1.16 AU

Year: 617 Days

Day: 12.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 68,707,249 km

• M1: 144,512 km (0.097 R)
• M2: 781,200 km (0.073 R)
• M3: 1,451,099 km (0.113 R)
• M4: 1,852,022 km (0.05 R)
• M5: 2,213,151 km (0.106 R)
• M6: 2,794,787 km (0.035 R)
• M7: 3,213,213 km (0.119 R)
• M8: 3,686,989 km (0.086 R)
• M9: 4,236,462 km (0.104 R)
• M10: 5,070,470 km (0.062 R)
• M11: 5,788,241 km (0.093 R)
• M12: 6,277,575 km (0.098 R)
• M13: 7,042,619 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 277.7

Radius: 10.3

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 1.05 AU - 1.69 AU

Year: 1052 Days

Day: 12 Hours

Environment

Temp: -184 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 68,707,249 km

• M1: 128,205 km (0.12 R)
• M2: 490,980 km (0.09 R)
• M3: 935,585 km (0.104 R)
• M4: 1,325,736 km (0.077 R)
• M5: 1,741,618 km (0.118 R)
• M6: 2,404,935 km (0.094 R)
• M7: 2,727,618 km (0.097 R)
• M8: 3,104,156 km (0.072 R)
• M9: 3,875,931 km (0.042 R)
• M10: 4,200,259 km (0.117 R)
• M11: 5,161,725 km (0.045 R)
• M12: 5,931,107 km (0.116 R)
• M13: 6,424,181 km (0.091 R)
• M14: 7,008,959 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 611.9

Radius: 10.6

Gravity: 5.45 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 1.72 AU - 1.82 AU

Year: 1545 Days

Day: 10 Hours

Environment

Temp: -185 °C

Axial Tilt: 94.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 68,707,249 km

• M1: 132,245 km (0.053 R)
• M2: 555,008 km (0.057 R)
• M3: 1,005,896 km (0.052 R)
• M4: 1,355,058 km (0.093 R)
• M5: 1,806,394 km (0.042 R)
• M6: 2,505,166 km (0.113 R)
• M7: 3,501,039 km (0.118 R)
• M8: 4,324,426 km (0.081 R)
• M9: 4,742,701 km (0.065 R)
• M10: 6,186,171 km (0.079 R)
• M11: 7,150,778 km (0.099 R)
• M12: 8,298,792 km (0.113 R)
• M13: 9,129,659 km (0.089 R)
• M14: 9,852,965 km (0.099 R)
• M15: 10,546,351 km (0.044 R)
• M16: 12,977,316 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 438.9

Radius: 12.2

Gravity: 2.95 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 1.89 AU - 2.41 AU

Year: 2068 Days

Day: 14.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 68,707,249 km

• M1: 151,842 km (0.053 R)
• M2: 674,986 km (0.09 R)
• M3: 1,296,565 km (0.091 R)
• M4: 1,949,859 km (0.084 R)
• M5: 2,403,439 km (0.12 R)
• M6: 2,912,970 km (0.104 R)
• M7: 3,710,326 km (0.061 R)
• M8: 4,471,780 km (0.12 R)
• M9: 5,600,944 km (0.073 R)
• M10: 7,282,574 km (0.11 R)
• M11: 8,007,226 km (0.082 R)
• M12: 8,416,975 km (0.101 R)
• M13: 9,089,267 km (0.088 R)
• M14: 9,698,430 km (0.102 R)
• M15: 10,998,585 km (0.097 R)
• M16: 11,469,070 km (0.113 R)
• M17: 12,763,541 km (0.086 R)
• M18: 13,692,843 km (0.104 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 612.5

Radius: 11.7

Gravity: 4.47 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 2.09 AU - 2.59 AU

Year: 2348 Days

Day: 6.7 Hours

Environment

Temp: -187 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 68,707,249 km

• M1: 145,559 km (0.112 R)
• M2: 540,647 km (0.027 R)
• M3: 1,446,163 km (0.065 R)
• M4: 2,061,159 km (0.118 R)
• M5: 2,498,733 km (0.103 R)
• M6: 3,373,582 km (0.098 R)
• M7: 3,967,336 km (0.087 R)
• M8: 5,772,683 km (0.096 R)
• M9: 7,066,704 km (0.087 R)
• M10: 7,979,850 km (0.059 R)
• M11: 8,903,766 km (0.106 R)
• M12: 9,826,785 km (0.111 R)
• M13: 10,220,676 km (0.11 R)
• M14: 12,894,888 km (0.101 R)
• M15: 13,807,435 km (0.086 R)
• M16: 15,232,205 km (0.117 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 282.2

Radius: 13.2

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.95 AU - 3.07 AU

Year: 2609 Days

Day: 13.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 68,707,249 km

• M1: 164,109 km (0.07 R)
• M2: 631,453 km (0.077 R)
• M3: 1,621,043 km (0.08 R)
• M4: 2,844,454 km (0.085 R)
• M5: 3,662,305 km (0.043 R)
• M6: 6,434,354 km (0.112 R)
• M7: 7,182,044 km (0.025 R)
• M8: 8,636,584 km (0.065 R)
• M9: 9,809,132 km (0.032 R)
• M10: 14,049,334 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 470.2

Radius: 5.1

Gravity: 18.08 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 7.61 AU - 12.37 AU

Year: 20714 Days

Day: 17.6 Hours

Environment

Temp: -230 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 68,707,249 km

• M1: 65,673 km (0.038 R)
• M2: 304,432 km (0.116 R)
• M3: 866,321 km (0.05 R)
• M4: 2,108,432 km (0.07 R)
• M5: 2,398,203 km (0.092 R)
• M6: 2,906,836 km (0.087 R)
• M7: 3,186,734 km (0.119 R)
• M8: 3,741,592 km (0.115 R)
• M9: 4,326,221 km (0.117 R)
• M10: 5,559,206 km (0.084 R)
• M11: 6,572,134 km (0.117 R)
• M12: 7,327,603 km (0.103 R)
• M13: 7,750,217 km (0.057 R)
• M14: 9,604,333 km (0.059 R)
• M15: 9,771,135 km (0.076 R)
• M16: 10,110,422 km (0.107 R)
• M17: 11,798,335 km (0.098 R)
• M18: 12,444,149 km (0.119 R)
• M19: 13,181,517 km (0.104 R)
• M20: 14,816,472 km (0.047 R)
• M21: 15,039,224 km (0.03 R)
• M22: 15,339,766 km (0.101 R)
• M23: 16,423,153 km (0.12 R)
• M24: 16,582,026 km (0.053 R)
• M25: 16,902,764 km (0.084 R)
• M26: 17,722,710 km (0.066 R)
• M27: 20,159,211 km (0.095 R)
• M28: 22,711,799 km (0.091 R)
• M29: 23,709,318 km (0.057 R)
• M30: 28,676,416 km (0.063 R)
• M31: 29,605,568 km (0.081 R)
• M32: 34,554,266 km (0.119 R)
• M33: 35,872,223 km (0.067 R)
• M34: 37,497,604 km (0.073 R)
• M35: 48,292,287 km (0.116 R)
• M36: 48,782,220 km (0.093 R)
• M37: 60,985,068 km (0.089 R)
• M38: 66,466,783 km (0.104 R)
• M39: 67,275,808 km (0.061 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 193 - 14,933 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit