🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.58 AU - 0.6 AU

Year: 297 Days

Day: 47.4 Hours

Environment

Temp: -117 °C

Axial Tilt: 8.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 923.9

Radius: 15

Gravity: 4.11 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.84 AU - 1.2 AU

Year: 676 Days

Day: 6.5 Hours

Environment

Temp: -164 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 67,322,899 km

• M1: 186,848 km (0.104 R)
• M2: 696,677 km (0.055 R)
• M3: 1,445,265 km (0.071 R)
• M4: 2,337,018 km (0.119 R)
• M5: 2,807,952 km (0.093 R)
• M6: 3,559,681 km (0.07 R)
• M7: 4,205,196 km (0.057 R)
• M8: 4,706,349 km (0.063 R)
• M9: 5,211,391 km (0.092 R)
• M10: 5,830,128 km (0.111 R)
• M11: 6,455,896 km (0.086 R)
• M12: 6,948,971 km (0.085 R)
• M13: 7,444,140 km (0.095 R)
• M14: 8,011,265 km (0.09 R)
• M15: 8,607,263 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 46.1

Radius: 12.3

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1.27 AU - 1.69 AU

Year: 1181 Days

Day: 6.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 67,322,899 km

• M1: 153,039 km (0.092 R)
• M2: 929,152 km (0.118 R)
• M3: 1,388,418 km (0.097 R)
• M4: 1,912,160 km (0.087 R)
• M5: 2,557,076 km (0.106 R)
• M6: 3,091,739 km (0.086 R)
• M7: 3,700,303 km (0.046 R)
• M8: 4,082,975 km (0.054 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 58.7

Radius: 11.6

Gravity: 0.44 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.24 AU - 1.8 AU

Year: 1229 Days

Day: 13.8 Hours

Environment

Temp: -172 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 67,322,899 km

• M1: 144,212 km (0.09 R)
• M2: 838,197 km (0.091 R)
• M3: 1,813,276 km (0.11 R)
• M4: 2,436,650 km (0.063 R)
• M5: 3,155,468 km (0.108 R)
• M6: 3,630,142 km (0.05 R)
• M7: 4,323,827 km (0.055 R)
• M8: 4,724,002 km (0.032 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 872.4

Radius: 9.3

Gravity: 10.09 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 3.99 AU - 4.39 AU

Year: 5626 Days

Day: 10.9 Hours

Environment

Temp: -207 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 67,322,899 km

• M1: 115,938 km (0.06 R)
• M2: 419,772 km (0.114 R)
• M3: 825,930 km (0.076 R)
• M4: 1,250,638 km (0.083 R)
• M5: 1,628,971 km (0.11 R)
• M6: 2,749,310 km (0.099 R)
• M7: 3,573,594 km (0.066 R)
• M8: 4,242,596 km (0.105 R)
• M9: 4,554,058 km (0.072 R)
• M10: 4,964,705 km (0.119 R)
• M11: 5,923,926 km (0.103 R)
• M12: 6,247,805 km (0.067 R)
• M13: 6,652,019 km (0.054 R)
• M14: 7,401,355 km (0.08 R)
• M15: 8,245,685 km (0.119 R)
• M16: 9,943,322 km (0.102 R)
• M17: 10,495,039 km (0.12 R)
• M18: 10,874,120 km (0.119 R)
• M19: 11,164,489 km (0.12 R)
• M20: 11,509,761 km (0.037 R)
• M21: 12,430,386 km (0.063 R)
• M22: 12,801,389 km (0.055 R)
• M23: 13,234,475 km (0.114 R)
• M24: 15,184,932 km (0.109 R)
• M25: 15,793,346 km (0.102 R)
• M26: 19,934,066 km (0.112 R)
• M27: 21,944,362 km (0.117 R)
• M28: 23,117,658 km (0.093 R)
• M29: 26,017,314 km (0.078 R)
• M30: 29,618,284 km (0.086 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 767.7

Radius: 7

Gravity: 15.67 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 6.5 AU - 7.92 AU

Year: 12700 Days

Day: 22.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 67,322,899 km

• M1: 89,759 km (0.117 R)
• M2: 330,312 km (0.071 R)
• M3: 634,744 km (0.062 R)
• M4: 923,617 km (0.106 R)
• M5: 1,234,631 km (0.104 R)
• M6: 1,479,822 km (0.048 R)
• M7: 2,358,410 km (0.091 R)
• M8: 2,586,846 km (0.059 R)
• M9: 3,064,363 km (0.112 R)
• M10: 3,653,030 km (0.109 R)
• M11: 3,960,155 km (0.085 R)
• M12: 4,437,522 km (0.108 R)
• M13: 4,820,343 km (0.099 R)
• M14: 5,364,580 km (0.1 R)
• M15: 6,494,792 km (0.101 R)
• M16: 7,375,025 km (0.094 R)
• M17: 8,379,874 km (0.1 R)
• M18: 8,965,101 km (0.108 R)
• M19: 12,870,503 km (0.09 R)
• M20: 14,321,303 km (0.117 R)
• M21: 14,596,264 km (0.111 R)
• M22: 15,015,587 km (0.074 R)
• M23: 15,732,011 km (0.09 R)
• M24: 16,172,577 km (0.12 R)
• M25: 16,396,076 km (0.062 R)
• M26: 18,826,892 km (0.047 R)
• M27: 22,213,339 km (0.082 R)
• M28: 28,398,463 km (0.117 R)
• M29: 31,302,008 km (0.041 R)
• M30: 35,139,792 km (0.061 R)
• M31: 37,691,184 km (0.056 R)
• M32: 38,480,013 km (0.085 R)
• M33: 47,591,571 km (0.078 R)
• M34: 47,897,349 km (0.077 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 709.1

Radius: 4.7

Gravity: 32.1 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 6.8 AU - 7.72 AU

Year: 12833 Days

Day: 17 Hours

Environment

Temp: -222 °C

Axial Tilt: 49.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 67,322,899 km

• M1: 119,080 km (0.103 R)
• M2: 781,948 km (0.103 R)
• M3: 1,052,271 km (0.104 R)
• M4: 1,846,337 km (0.07 R)
• M5: 2,151,666 km (0.104 R)
• M6: 3,719,302 km (0.104 R)
• M7: 3,914,976 km (0.119 R)
• M8: 4,088,061 km (0.093 R)
• M9: 4,574,703 km (0.085 R)
• M10: 5,236,225 km (0.087 R)
• M11: 5,662,579 km (0.084 R)
• M12: 8,055,097 km (0.098 R)
• M13: 10,375,360 km (0.096 R)
• M14: 12,168,440 km (0.063 R)
• M15: 13,299,101 km (0.098 R)
• M16: 21,676,731 km (0.069 R)
• M17: 21,856,548 km (0.083 R)
• M18: 23,237,785 km (0.072 R)
• M19: 27,412,763 km (0.112 R)
• M20: 28,368,095 km (0.073 R)
• M21: 35,187,065 km (0.064 R)
• M22: 43,878,103 km (0.055 R)
• M23: 49,567,459 km (0.041 R)
• M24: 55,392,651 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 778.1

Radius: 7.9

Gravity: 12.47 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 7.05 AU - 9.03 AU

Year: 14955 Days

Day: 19.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 67,322,899 km

• M1: 99,034 km (0.101 R)
• M2: 386,262 km (0.088 R)
• M3: 644,617 km (0.114 R)
• M4: 1,456,485 km (0.073 R)
• M5: 2,995,398 km (0.094 R)
• M6: 3,433,122 km (0.114 R)
• M7: 4,246,635 km (0.098 R)
• M8: 7,009,259 km (0.108 R)
• M9: 7,456,855 km (0.109 R)
• M10: 8,261,542 km (0.116 R)
• M11: 8,914,986 km (0.096 R)
• M12: 9,227,945 km (0.102 R)
• M13: 9,711,295 km (0.044 R)
• M14: 12,513,712 km (0.105 R)
• M15: 13,442,865 km (0.064 R)
• M16: 13,854,708 km (0.111 R)
• M17: 16,978,461 km (0.035 R)
• M18: 18,033,126 km (0.111 R)
• M19: 23,177,198 km (0.107 R)
• M20: 23,472,205 km (0.107 R)
• M21: 23,769,755 km (0.06 R)
• M22: 28,204,285 km (0.079 R)
• M23: 29,107,108 km (0.081 R)
• M24: 31,689,467 km (0.118 R)
• M25: 32,912,280 km (0.11 R)
• M26: 46,604,524 km (0.047 R)
• M27: 63,465,251 km (0.063 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 325.1

Radius: 6.9

Gravity: 6.83 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 9.54 AU - 12.6 AU

Year: 24162 Days

Day: 23 Hours

Environment

Temp: -241 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 67,322,899 km

• M1: 86,468 km (0.094 R)
• M2: 422,016 km (0.056 R)
• M3: 861,983 km (0.052 R)
• M4: 1,295,069 km (0.107 R)
• M5: 1,742,666 km (0.088 R)
• M6: 2,309,791 km (0.108 R)
• M7: 2,919,402 km (0.12 R)
• M8: 3,922,755 km (0.105 R)
• M9: 4,519,352 km (0.115 R)
• M10: 4,926,258 km (0.079 R)
• M11: 6,253,789 km (0.118 R)
• M12: 6,759,281 km (0.112 R)
• M13: 7,521,631 km (0.056 R)
• M14: 9,163,169 km (0.091 R)
• M15: 10,732,151 km (0.054 R)
• M16: 13,477,871 km (0.059 R)
• M17: 14,035,871 km (0.089 R)
• M18: 15,497,891 km (0.109 R)
• M19: 16,110,344 km (0.051 R)
• M20: 16,344,016 km (0.116 R)
• M21: 16,898,276 km (0.096 R)
• M22: 19,592,534 km (0.062 R)
• M23: 20,948,788 km (0.066 R)
• M24: 22,951,006 km (0.103 R)
• M25: 24,354,683 km (0.116 R)
• M26: 26,457,730 km (0.115 R)
• M27: 27,331,830 km (0.069 R)
• M28: 29,137,626 km (0.113 R)
• M29: 31,626,486 km (0.1 R)
• M30: 32,610,840 km (0.049 R)
• M31: 38,115,742 km (0.114 R)
• M32: 40,079,962 km (0.098 R)
• M33: 46,062,381 km (0.042 R)
• M34: 47,326,334 km (0.058 R)
• M35: 59,758,964 km (0.089 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 341 - 18,498 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit