🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.28

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.44 AU - 0.58 AU

Year: 239 Days

Day: 28.5 Hours

Environment

Temp: -113 °C

Axial Tilt: 32.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 670.3

Radius: 10

Gravity: 6.7 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.64 AU - 0.78 AU

Year: 392 Days

Day: 9.5 Hours

Environment

Temp: -129 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,271,506 km

• M1: 124,316 km (0.112 R)
• M2: 442,959 km (0.025 R)
• M3: 836,850 km (0.111 R)
• M4: 1,221,915 km (0.107 R)
• M5: 1,572,423 km (0.098 R)
• M6: 2,137,604 km (0.103 R)
• M7: 2,482,277 km (0.103 R)
• M8: 2,833,384 km (0.084 R)
• M9: 3,229,070 km (0.114 R)
• M10: 3,673,675 km (0.079 R)
• M11: 4,293,309 km (0.063 R)
• M12: 4,758,708 km (0.114 R)
• M13: 5,072,265 km (0.065 R)
• M14: 5,383,728 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 192.1

Radius: 14.6

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.64 AU - 0.88 AU

Year: 435 Days

Day: 14.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 41,271,506 km

• M1: 181,612 km (0.095 R)
• M2: 692,489 km (0.088 R)
• M3: 1,375,104 km (0.076 R)
• M4: 1,830,180 km (0.116 R)
• M5: 2,599,263 km (0.102 R)
• M6: 3,421,752 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 597.3

Radius: 9.5

Gravity: 6.62 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.93 AU - 1.09 AU

Year: 666 Days

Day: 6.3 Hours

Environment

Temp: -168 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 41,271,506 km

• M1: 139,276 km (0.106 R)
• M2: 571,015 km (0.064 R)
• M3: 1,562,999 km (0.034 R)
• M4: 1,865,934 km (0.114 R)
• M5: 2,415,856 km (0.037 R)
• M6: 2,859,115 km (0.103 R)
• M7: 3,433,271 km (0.09 R)
• M8: 3,966,588 km (0.096 R)
• M9: 4,306,474 km (0.059 R)
• M10: 7,173,218 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 768

Radius: 13.2

Gravity: 4.41 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.2 AU - 1.84 AU

Year: 1229 Days

Day: 6.4 Hours

Environment

Temp: -173 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,271,506 km

• M1: 164,258 km (0.064 R)
• M2: 667,356 km (0.119 R)
• M3: 1,249,142 km (0.102 R)
• M4: 1,833,023 km (0.116 R)
• M5: 2,390,125 km (0.065 R)
• M6: 2,921,347 km (0.096 R)
• M7: 3,484,733 km (0.028 R)
• M8: 4,206,842 km (0.074 R)
• M9: 4,831,562 km (0.116 R)
• M10: 5,840,450 km (0.093 R)
• M11: 6,910,823 km (0.101 R)
• M12: 8,960,613 km (0.089 R)
• M13: 9,840,548 km (0.117 R)
• M14: 12,094,090 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 588.7

Radius: 13.8

Gravity: 3.09 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 2.73 AU - 3.21 AU

Year: 3358 Days

Day: 5.1 Hours

Environment

Temp: -200 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 41,271,506 km

• M1: 171,738 km (0.084 R)
• M2: 874,100 km (0.102 R)
• M3: 1,314,367 km (0.076 R)
• M4: 1,755,531 km (0.05 R)
• M5: 2,512,646 km (0.063 R)
• M6: 3,018,436 km (0.104 R)
• M7: 3,825,816 km (0.072 R)
• M8: 4,726,694 km (0.08 R)
• M9: 5,978,829 km (0.097 R)
• M10: 6,509,003 km (0.034 R)
• M11: 6,979,638 km (0.104 R)
• M12: 7,473,162 km (0.103 R)
• M13: 11,482,085 km (0.117 R)
• M14: 15,415,761 km (0.068 R)
• M15: 16,095,833 km (0.083 R)
• M16: 20,542,780 km (0.082 R)
• M17: 21,495,568 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 845.2

Radius: 11.8

Gravity: 6.07 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 3.38 AU - 4.78 AU

Year: 5406 Days

Day: 8.6 Hours

Environment

Temp: -204 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 41,271,506 km

• M1: 146,905 km (0.101 R)
• M2: 528,529 km (0.115 R)
• M3: 1,001,259 km (0.027 R)
• M4: 1,423,873 km (0.059 R)
• M5: 2,085,394 km (0.09 R)
• M6: 3,100,117 km (0.104 R)
• M7: 3,880,270 km (0.119 R)
• M8: 5,147,364 km (0.113 R)
• M9: 7,411,527 km (0.084 R)
• M10: 7,972,071 km (0.092 R)
• M11: 8,560,589 km (0.063 R)
• M12: 9,869,121 km (0.079 R)
• M13: 12,101,271 km (0.114 R)
• M14: 12,512,216 km (0.117 R)
• M15: 13,146,212 km (0.086 R)
• M16: 14,883,642 km (0.117 R)
• M17: 17,802,446 km (0.102 R)
• M18: 18,469,503 km (0.119 R)
• M19: 18,877,606 km (0.099 R)
• M20: 20,789,466 km (0.106 R)
• M21: 29,457,616 km (0.077 R)
• M22: 32,022,920 km (0.083 R)
• M23: 33,611,500 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 767

Radius: 3.2

Gravity: 74.9 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 5.27 AU - 8.29 AU

Year: 11581 Days

Day: 19.1 Hours

Environment

Temp: -229 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 41,271,506 km

• M1: 43,533 km (0.094 R)
• M2: 157,527 km (0.05 R)
• M3: 349,161 km (0.11 R)
• M4: 577,298 km (0.115 R)
• M5: 981,811 km (0.093 R)
• M6: 1,095,655 km (0.116 R)
• M7: 1,433,746 km (0.107 R)
• M8: 1,770,640 km (0.08 R)
• M9: 2,707,123 km (0.064 R)
• M10: 4,744,197 km (0.047 R)
• M11: 5,881,291 km (0.095 R)
• M12: 8,581,383 km (0.047 R)
• M13: 8,870,256 km (0.076 R)
• M14: 9,315,908 km (0.07 R)
• M15: 9,569,776 km (0.102 R)
• M16: 9,776,221 km (0.114 R)
• M17: 9,985,508 km (0.097 R)
• M18: 10,576,719 km (0.084 R)
• M19: 10,908,976 km (0.059 R)
• M20: 11,305,111 km (0.057 R)
• M21: 15,595,279 km (0.084 R)
• M22: 18,059,006 km (0.085 R)
• M23: 18,693,152 km (0.118 R)
• M24: 20,427,888 km (0.086 R)
• M25: 21,642,174 km (0.095 R)
• M26: 22,812,030 km (0.079 R)
• M27: 24,983,892 km (0.051 R)
• M28: 27,393,016 km (0.035 R)
• M29: 30,839,900 km (0.094 R)
• M30: 38,708,449 km (0.105 R)
• M31: 38,969,797 km (0.115 R)
• M32: 42,059,441 km (0.077 R)
• M33: 43,876,008 km (0.096 R)
• M34: 44,302,512 km (0.113 R)
• M35: 45,019,534 km (0.11 R)
• M36: 49,484,582 km (0.04 R)
• M37: 53,101,111 km (0.077 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 233.3

Radius: 3.8

Gravity: 16.16 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 6.96 AU - 8.2 AU

Year: 13690 Days

Day: 18.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 41,271,506 km

• M1: 100,679 km (0.109 R)
• M2: 1,555,818 km (0.061 R)
• M3: 2,101,700 km (0.103 R)
• M4: 2,345,246 km (0.12 R)
• M5: 3,347,851 km (0.071 R)
• M6: 7,762,334 km (0.048 R)
• M7: 9,730,294 km (0.092 R)
• M8: 10,652,565 km (0.082 R)
• M9: 14,308,737 km (0.116 R)
• M10: 16,617,182 km (0.109 R)
• M11: 19,610,336 km (0.104 R)
• M12: 32,043,565 km (0.101 R)
• M13: 35,280,414 km (0.112 R)
• M14: 35,952,856 km (0.046 R)
• M15: 37,207,982 km (0.081 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 461 - 11,197 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit