🌌 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: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.52

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.56 AU - 0.76 AU

Year: 352 Days

Day: 47.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 32.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32.5

Radius: 13.3

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.77 AU - 0.99 AU

Year: 542 Days

Day: 7.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 76,673,919 km

• M1: 165,455 km (0.036 R)
• M2: 653,743 km (0.113 R)
• M3: 1,101,040 km (0.05 R)
• M4: 1,686,866 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 916

Radius: 8.3

Gravity: 13.3 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.68 AU - 1.13 AU

Year: 560 Days

Day: 10.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 76,673,919 km

• M1: 104,419 km (0.071 R)
• M2: 480,209 km (0.113 R)
• M3: 850,464 km (0.11 R)
• M4: 1,109,119 km (0.081 R)
• M5: 1,386,174 km (0.119 R)
• M6: 2,019,571 km (0.107 R)
• M7: 2,296,028 km (0.089 R)
• M8: 2,764,569 km (0.062 R)
• M9: 3,333,938 km (0.105 R)
• M10: 3,708,980 km (0.079 R)
• M11: 4,278,050 km (0.089 R)
• M12: 4,591,757 km (0.066 R)
• M13: 5,057,006 km (0.117 R)
• M14: 5,889,070 km (0.113 R)
• M15: 6,519,625 km (0.107 R)
• M16: 7,000,133 km (0.103 R)
• M17: 7,662,253 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 69

Radius: 8.2

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1.77 AU - 1.97 AU

Year: 1678 Days

Day: 6.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 76,673,919 km

• M1: 102,026 km (0.091 R)
• M2: 600,486 km (0.098 R)
• M3: 878,439 km (0.05 R)
• M4: 1,238,072 km (0.048 R)
• M5: 1,641,089 km (0.099 R)
• M6: 2,316,074 km (0.052 R)
• M7: 2,765,915 km (0.109 R)
• M8: 3,224,283 km (0.106 R)
• M9: 4,578,144 km (0.111 R)
• M10: 5,476,479 km (0.103 R)
• M11: 6,275,930 km (0.088 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 677.1

Radius: 10.9

Gravity: 5.7 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 2.21 AU - 2.41 AU

Year: 2303 Days

Day: 15 Hours

Environment

Temp: -203 °C

Axial Tilt: 72.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 76,673,919 km

• M1: 136,284 km (0.079 R)
• M2: 741,108 km (0.099 R)
• M3: 1,143,676 km (0.117 R)
• M4: 1,725,761 km (0.098 R)
• M5: 2,442,335 km (0.083 R)
• M6: 3,700,154 km (0.115 R)
• M7: 4,078,487 km (0.059 R)
• M8: 4,461,607 km (0.091 R)
• M9: 4,802,989 km (0.104 R)
• M10: 5,371,611 km (0.095 R)
• M11: 6,671,167 km (0.103 R)
• M12: 10,651,069 km (0.063 R)
• M13: 11,739,394 km (0.083 R)
• M14: 12,104,562 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 629.4

Radius: 10.6

Gravity: 5.6 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 2.89 AU - 3.29 AU

Year: 3563 Days

Day: 8 Hours

Environment

Temp: -213 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 76,673,919 km

• M1: 132,095 km (0.09 R)
• M2: 491,429 km (0.083 R)
• M3: 832,363 km (0.064 R)
• M4: 1,182,571 km (0.083 R)
• M5: 2,739,735 km (0.109 R)
• M6: 4,513,368 km (0.029 R)
• M7: 4,890,654 km (0.082 R)
• M8: 6,208,461 km (0.111 R)
• M9: 7,716,258 km (0.089 R)
• M10: 8,085,915 km (0.117 R)
• M11: 8,609,058 km (0.077 R)
• M12: 9,761,859 km (0.11 R)
• M13: 10,315,072 km (0.093 R)
• M14: 11,141,451 km (0.116 R)
• M15: 12,190,730 km (0.064 R)
• M16: 13,114,348 km (0.111 R)
• M17: 15,205,128 km (0.08 R)
• M18: 17,682,020 km (0.076 R)
• M19: 18,090,123 km (0.12 R)
• M20: 18,564,348 km (0.083 R)
• M21: 21,190,838 km (0.112 R)
• M22: 21,851,013 km (0.084 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 531.9

Radius: 13.3

Gravity: 3.01 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 3.45 AU - 3.47 AU

Year: 4222 Days

Day: 6.3 Hours

Environment

Temp: -214 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 76,673,919 km

• M1: 165,754 km (0.044 R)
• M2: 608,415 km (0.111 R)
• M3: 1,142,030 km (0.056 R)
• M4: 1,560,007 km (0.077 R)
• M5: 2,940,645 km (0.081 R)
• M6: 5,223,808 km (0.072 R)
• M7: 5,950,555 km (0.115 R)
• M8: 10,025,002 km (0.112 R)
• M9: 13,695,685 km (0.085 R)
• M10: 14,711,305 km (0.103 R)
• M11: 15,559,525 km (0.106 R)
• M12: 18,000,813 km (0.096 R)
• M13: 19,469,415 km (0.064 R)
• M14: 20,491,916 km (0.08 R)
• M15: 21,617,341 km (0.097 R)
• M16: 23,560,019 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 233.6

Radius: 12.8

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 4.02 AU - 6.4 AU

Year: 7801 Days

Day: 13.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 76,673,919 km

• M1: 161,416 km (0.05 R)
• M2: 2,924,040 km (0.086 R)
• M3: 4,931,643 km (0.074 R)
• M4: 6,533,238 km (0.085 R)
• M5: 7,048,902 km (0.054 R)
• M6: 13,914,996 km (0.091 R)
• M7: 16,120,816 km (0.093 R)
• M8: 18,614,463 km (0.095 R)
• M9: 21,215,521 km (0.093 R)
• M10: 22,421,878 km (0.111 R)
• M11: 25,048,817 km (0.039 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 683.8

Radius: 5.7

Gravity: 21.05 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 9.58 AU - 10.1 AU

Year: 20249 Days

Day: 22.5 Hours

Environment

Temp: -224 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 76,673,919 km

• M1: 71,657 km (0.081 R)
• M2: 255,214 km (0.101 R)
• M3: 474,375 km (0.118 R)
• M4: 656,585 km (0.069 R)
• M5: 1,253,481 km (0.112 R)
• M6: 1,770,491 km (0.106 R)
• M7: 2,057,569 km (0.081 R)
• M8: 4,241,100 km (0.096 R)
• M9: 4,864,025 km (0.095 R)
• M10: 5,159,631 km (0.117 R)
• M11: 9,305,736 km (0.093 R)
• M12: 9,936,440 km (0.1 R)
• M13: 11,029,402 km (0.073 R)
• M14: 11,801,178 km (0.101 R)
• M15: 13,166,408 km (0.082 R)
• M16: 13,960,623 km (0.12 R)
• M17: 14,482,420 km (0.1 R)
• M18: 16,206,985 km (0.061 R)
• M19: 18,862,646 km (0.118 R)
• M20: 22,904,481 km (0.098 R)
• M21: 26,798,663 km (0.097 R)
• M22: 29,504,889 km (0.057 R)
• M23: 33,169,588 km (0.081 R)
• M24: 42,462,009 km (0.105 R)
• M25: 43,555,570 km (0.09 R)
• M26: 44,348,139 km (0.076 R)
• M27: 45,311,849 km (0.063 R)
• M28: 51,565,040 km (0.12 R)
• M29: 52,988,763 km (0.081 R)
• M30: 64,103,136 km (0.074 R)
• M31: 65,541,221 km (0.044 R)
• M32: 68,695,043 km (0.077 R)
• M33: 69,337,715 km (0.116 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: 402 - 11,700 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit