🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.38

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.57 AU - 0.57 AU

Year: 282 Days

Day: 38.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 4.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 58,432,582 km

• M1: 277,205 km (0.109 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 119.4

Radius: 13.9

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.64 AU - 0.82 AU

Year: 409 Days

Day: 10.5 Hours

Environment

Temp: -146 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 58,432,582 km

• M1: 172,935 km (0.096 R)
• M2: 790,326 km (0.111 R)
• M3: 1,337,555 km (0.093 R)
• M4: 1,973,944 km (0.115 R)
• M5: 2,702,037 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 201.7

Radius: 12

Gravity: 1.4 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.88 AU - 1.24 AU

Year: 716 Days

Day: 11.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 58,432,582 km

• M1: 149,448 km (0.063 R)
• M2: 972,985 km (0.104 R)
• M3: 2,088,087 km (0.104 R)
• M4: 2,478,837 km (0.095 R)
• M5: 3,263,328 km (0.048 R)
• M6: 3,794,400 km (0.065 R)
• M7: 5,498,171 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 248.7

Radius: 12.3

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 1.25 AU - 1.59 AU

Year: 1110 Days

Day: 11.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 58,432,582 km

• M1: 153,039 km (0.087 R)
• M2: 571,314 km (0.076 R)
• M3: 1,014,872 km (0.087 R)
• M4: 1,602,492 km (0.08 R)
• M5: 2,173,807 km (0.119 R)
• M6: 2,675,259 km (0.111 R)
• M7: 3,190,773 km (0.025 R)
• M8: 3,620,418 km (0.103 R)
• M9: 4,581,584 km (0.11 R)
• M10: 6,125,135 km (0.065 R)
• M11: 6,606,541 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 440.1

Radius: 9.7

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 2.85 AU - 3.15 AU

Year: 3409 Days

Day: 11.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 58,432,582 km

• M1: 123,717 km (0.098 R)
• M2: 434,133 km (0.118 R)
• M3: 916,137 km (0.118 R)
• M4: 1,503,309 km (0.089 R)
• M5: 2,829,195 km (0.112 R)
• M6: 3,350,394 km (0.044 R)
• M7: 4,199,212 km (0.103 R)
• M8: 4,652,045 km (0.112 R)
• M9: 5,209,147 km (0.064 R)
• M10: 5,940,980 km (0.114 R)
• M11: 6,739,982 km (0.095 R)
• M12: 7,797,490 km (0.112 R)
• M13: 8,316,445 km (0.11 R)
• M14: 8,754,767 km (0.106 R)
• M15: 9,244,101 km (0.055 R)
• M16: 10,901,346 km (0.12 R)
• M17: 13,286,086 km (0.095 R)
• M18: 13,839,149 km (0.06 R)
• M19: 15,189,121 km (0.103 R)
• M20: 15,539,928 km (0.103 R)
• M21: 15,896,120 km (0.105 R)
• M22: 17,704,459 km (0.052 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 480.4

Radius: 11.7

Gravity: 3.51 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 2.97 AU - 3.59 AU

Year: 3897 Days

Day: 15 Hours

Environment

Temp: -198 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 58,432,582 km

• M1: 145,559 km (0.076 R)
• M2: 579,991 km (0.099 R)
• M3: 956,828 km (0.064 R)
• M4: 1,345,483 km (0.103 R)
• M5: 1,890,767 km (0.108 R)
• M6: 2,286,005 km (0.096 R)
• M7: 3,035,640 km (0.096 R)
• M8: 3,487,426 km (0.03 R)
• M9: 4,174,080 km (0.113 R)
• M10: 4,595,946 km (0.077 R)
• M11: 5,269,585 km (0.095 R)
• M12: 7,026,911 km (0.116 R)
• M13: 7,822,473 km (0.085 R)
• M14: 10,094,565 km (0.043 R)
• M15: 14,107,528 km (0.114 R)
• M16: 14,959,937 km (0.094 R)
• M17: 15,582,264 km (0.111 R)
• M18: 16,438,712 km (0.098 R)
• M19: 20,558,487 km (0.072 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 781.5

Radius: 14.9

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 4.74 AU - 6.88 AU

Year: 9187 Days

Day: 14 Hours

Environment

Temp: -214 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 58,432,582 km

• M1: 185,352 km (0.087 R)
• M2: 694,134 km (0.083 R)
• M3: 1,335,161 km (0.099 R)
• M4: 2,104,543 km (0.116 R)
• M5: 3,025,318 km (0.068 R)
• M6: 6,513,342 km (0.048 R)
• M7: 7,609,296 km (0.115 R)
• M8: 8,643,915 km (0.072 R)
• M9: 10,116,706 km (0.098 R)
• M10: 10,781,967 km (0.036 R)
• M11: 15,741,137 km (0.104 R)
• M12: 18,226,556 km (0.088 R)
• M13: 26,467,304 km (0.112 R)
• M14: 27,241,174 km (0.089 R)
• M15: 33,647,403 km (0.096 R)
• M16: 42,817,454 km (0.107 R)
• M17: 45,655,774 km (0.055 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 103.4

Radius: 5.6

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 6.6 AU - 7.96 AU

Year: 12886 Days

Day: 18 Hours

Environment

Temp: -224 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 58,432,582 km

• M1: 71,358 km (0.086 R)
• M2: 293,212 km (0.043 R)
• M3: 471,084 km (0.096 R)
• M4: 985,401 km (0.111 R)
• M5: 1,395,898 km (0.082 R)
• M6: 1,584,541 km (0.104 R)
• M7: 1,858,155 km (0.083 R)
• M8: 2,043,058 km (0.105 R)
• M9: 2,534,487 km (0.08 R)
• M10: 3,884,010 km (0.091 R)
• M11: 5,004,498 km (0.097 R)
• M12: 6,812,986 km (0.038 R)
• M13: 7,255,646 km (0.046 R)
• M14: 7,608,996 km (0.083 R)
• M15: 8,350,104 km (0.113 R)
• M16: 9,718,626 km (0.091 R)
• M17: 10,770,299 km (0.084 R)
• M18: 10,952,808 km (0.108 R)
• M19: 15,975,108 km (0.083 R)
• M20: 16,332,048 km (0.096 R)
• M21: 16,573,051 km (0.088 R)
• M22: 16,755,261 km (0.119 R)
• M23: 17,309,970 km (0.03 R)
• M24: 23,548,500 km (0.079 R)
• M25: 23,778,881 km (0.101 R)
• M26: 26,002,653 km (0.088 R)
• M27: 28,016,091 km (0.047 R)
• M28: 29,237,258 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 444

Radius: 4.9

Gravity: 18.49 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 6.59 AU - 10.73 AU

Year: 16718 Days

Day: 19.9 Hours

Environment

Temp: -236 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 58,432,582 km

• M1: 66,571 km (0.088 R)
• M2: 257,907 km (0.104 R)
• M3: 1,147,266 km (0.08 R)
• M4: 2,177,696 km (0.108 R)
• M5: 4,025,380 km (0.107 R)
• M6: 5,170,102 km (0.063 R)
• M7: 7,097,821 km (0.073 R)
• M8: 9,252,329 km (0.113 R)
• M9: 11,568,104 km (0.096 R)
• M10: 12,795,704 km (0.079 R)
• M11: 14,936,300 km (0.084 R)
• M12: 17,695,633 km (0.047 R)
• M13: 21,041,240 km (0.075 R)
• M14: 32,245,223 km (0.12 R)
• M15: 47,164,169 km (0.11 R)
• M16: 50,901,723 km (0.106 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 448 - 14,192 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit