🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.59

Radius: 0.81

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.49 AU - 0.71 AU

Year: 300 Days

Day: 41.2 Hours

Environment

Temp: -129 °C

Axial Tilt: 21.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.9

Radius: 0.96

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.64 AU - 0.66 AU

Year: 338 Days

Day: 44.5 Hours

Environment

Temp: -129 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 973.5

Radius: 9.4

Gravity: 11.02 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.86 AU - 0.94 AU

Year: 551 Days

Day: 7.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 83,479,495 km

• M1: 116,836 km (0.106 R)
• M2: 559,197 km (0.052 R)
• M3: 910,153 km (0.067 R)
• M4: 1,518,568 km (0.068 R)
• M5: 3,132,729 km (0.067 R)
• M6: 3,836,437 km (0.082 R)
• M7: 5,145,419 km (0.055 R)
• M8: 5,592,567 km (0.063 R)
• M9: 5,892,211 km (0.04 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 353.9

Radius: 8.8

Gravity: 4.57 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.87 AU - 1.93 AU

Year: 1691 Days

Day: 7.6 Hours

Environment

Temp: -177 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 83,479,495 km

• M1: 109,506 km (0.081 R)
• M2: 487,689 km (0.077 R)
• M3: 779,555 km (0.104 R)
• M4: 1,185,414 km (0.114 R)
• M5: 2,301,563 km (0.087 R)
• M6: 3,064,812 km (0.059 R)
• M7: 3,520,636 km (0.12 R)
• M8: 4,244,690 km (0.109 R)
• M9: 4,623,621 km (0.112 R)
• M10: 5,964,168 km (0.106 R)
• M11: 7,520,734 km (0.059 R)
• M12: 9,242,007 km (0.079 R)
• M13: 9,664,322 km (0.117 R)
• M14: 11,076,226 km (0.103 R)
• M15: 11,587,552 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 600.6

Radius: 8.7

Gravity: 7.93 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 2.59 AU - 3.21 AU

Year: 3189 Days

Day: 14.1 Hours

Environment

Temp: -198 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 83,479,495 km

• M1: 108,159 km (0.119 R)
• M2: 406,457 km (0.08 R)
• M3: 742,903 km (0.062 R)
• M4: 1,135,747 km (0.079 R)
• M5: 1,576,462 km (0.054 R)
• M6: 2,154,957 km (0.112 R)
• M7: 2,984,478 km (0.098 R)
• M8: 3,730,672 km (0.077 R)
• M9: 4,032,859 km (0.082 R)
• M10: 4,826,027 km (0.094 R)
• M11: 5,259,712 km (0.1 R)
• M12: 5,771,935 km (0.075 R)
• M13: 8,533,063 km (0.094 R)
• M14: 8,846,769 km (0.11 R)
• M15: 9,497,370 km (0.106 R)
• M16: 10,025,152 km (0.109 R)
• M17: 14,137,298 km (0.08 R)
• M18: 14,825,598 km (0.081 R)
• M19: 15,381,803 km (0.063 R)
• M20: 17,300,096 km (0.087 R)
• M21: 18,201,723 km (0.059 R)
• M22: 18,722,473 km (0.071 R)
• M23: 21,094,796 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 911.7

Radius: 12.7

Gravity: 5.65 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 3.71 AU - 4.47 AU

Year: 5341 Days

Day: 10.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 83,479,495 km

• M1: 157,975 km (0.12 R)
• M2: 594,951 km (0.102 R)
• M3: 1,044,941 km (0.106 R)
• M4: 1,690,606 km (0.114 R)
• M5: 2,521,771 km (0.09 R)
• M6: 2,982,234 km (0.111 R)
• M7: 3,654,078 km (0.069 R)
• M8: 5,508,044 km (0.048 R)
• M9: 8,552,361 km (0.119 R)
• M10: 10,549,043 km (0.068 R)
• M11: 11,021,324 km (0.089 R)
• M12: 12,212,721 km (0.047 R)
• M13: 15,930,827 km (0.096 R)
• M14: 16,553,453 km (0.065 R)
• M15: 19,699,347 km (0.119 R)
• M16: 23,944,037 km (0.049 R)
• M17: 28,037,633 km (0.085 R)
• M18: 29,314,451 km (0.034 R)
• M19: 32,775,098 km (0.109 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 599.6

Radius: 6.2

Gravity: 15.6 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 5.38 AU - 7.04 AU

Year: 9992 Days

Day: 18.1 Hours

Environment

Temp: -211 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 83,479,495 km

• M1: 77,940 km (0.113 R)
• M2: 278,850 km (0.06 R)
• M3: 482,902 km (0.083 R)
• M4: 1,479,972 km (0.093 R)
• M5: 1,676,843 km (0.026 R)
• M6: 1,907,223 km (0.049 R)
• M7: 2,509,055 km (0.103 R)
• M8: 2,708,320 km (0.098 R)
• M9: 3,490,866 km (0.082 R)
• M10: 3,816,990 km (0.115 R)
• M11: 4,246,036 km (0.062 R)
• M12: 6,145,929 km (0.102 R)
• M13: 8,111,645 km (0.118 R)
• M14: 8,957,472 km (0.119 R)
• M15: 9,283,445 km (0.103 R)
• M16: 9,811,676 km (0.047 R)
• M17: 11,462,488 km (0.112 R)
• M18: 12,126,553 km (0.082 R)
• M19: 14,976,243 km (0.057 R)
• M20: 15,369,386 km (0.104 R)
• M21: 15,836,879 km (0.112 R)
• M22: 17,224,549 km (0.048 R)
• M23: 17,801,698 km (0.04 R)
• M24: 21,045,129 km (0.098 R)
• M25: 22,805,597 km (0.088 R)
• M26: 23,064,850 km (0.04 R)
• M27: 24,843,718 km (0.095 R)
• M28: 25,394,837 km (0.077 R)
• M29: 28,173,468 km (0.115 R)
• M30: 28,372,283 km (0.102 R)
• M31: 34,100,535 km (0.099 R)
• M32: 34,667,063 km (0.107 R)
• M33: 37,473,519 km (0.106 R)
• M34: 38,931,799 km (0.038 R)
• M35: 41,445,940 km (0.071 R)
• M36: 43,005,199 km (0.113 R)
• M37: 44,334,227 km (0.081 R)
• M38: 45,416,866 km (0.066 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 698.5

Radius: 4.7

Gravity: 31.62 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 6.15 AU - 6.83 AU

Year: 10675 Days

Day: 22.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 83,479,495 km

• M1: 58,792 km (0.08 R)
• M2: 205,697 km (0.109 R)
• M3: 461,210 km (0.092 R)
• M4: 695,181 km (0.076 R)
• M5: 1,260,811 km (0.067 R)
• M6: 1,601,894 km (0.069 R)
• M7: 2,002,068 km (0.118 R)
• M8: 4,088,510 km (0.097 R)
• M9: 4,737,615 km (0.053 R)
• M10: 7,259,237 km (0.118 R)
• M11: 7,509,963 km (0.114 R)
• M12: 8,524,685 km (0.117 R)
• M13: 8,898,231 km (0.107 R)
• M14: 10,032,781 km (0.103 R)
• M15: 10,239,525 km (0.027 R)
• M16: 10,396,304 km (0.099 R)
• M17: 11,709,923 km (0.047 R)
• M18: 13,881,934 km (0.115 R)
• M19: 14,074,168 km (0.078 R)
• M20: 14,861,202 km (0.106 R)
• M21: 17,621,283 km (0.098 R)
• M22: 18,303,449 km (0.094 R)
• M23: 19,240,231 km (0.04 R)
• M24: 21,293,761 km (0.102 R)
• M25: 22,505,354 km (0.098 R)
• M26: 25,254,813 km (0.051 R)
• M27: 28,015,492 km (0.064 R)
• M28: 28,322,766 km (0.09 R)
• M29: 31,519,673 km (0.063 R)
• M30: 33,548,818 km (0.114 R)
• M31: 34,244,000 km (0.057 R)
• M32: 39,767,752 km (0.055 R)
• M33: 42,807,431 km (0.038 R)
• M34: 45,998,503 km (0.1 R)
• M35: 48,309,491 km (0.051 R)
• M36: 50,243,342 km (0.062 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 685.2

Radius: 4.8

Gravity: 29.74 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 8.86 AU - 12.78 AU

Year: 22980 Days

Day: 24.2 Hours

Environment

Temp: -239 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 83,479,495 km

• M1: 59,690 km (0.036 R)
• M2: 264,938 km (0.119 R)
• M3: 570,865 km (0.117 R)
• M4: 854,503 km (0.109 R)
• M5: 1,048,382 km (0.119 R)
• M6: 2,157,949 km (0.059 R)
• M7: 3,280,831 km (0.057 R)
• M8: 3,545,170 km (0.108 R)
• M9: 4,565,278 km (0.098 R)
• M10: 4,783,242 km (0.108 R)
• M11: 7,361,262 km (0.096 R)
• M12: 8,501,348 km (0.109 R)
• M13: 9,754,230 km (0.104 R)
• M14: 10,676,052 km (0.107 R)
• M15: 12,269,269 km (0.1 R)
• M16: 12,905,509 km (0.118 R)
• M17: 14,631,270 km (0.086 R)
• M18: 14,946,323 km (0.107 R)
• M19: 15,835,982 km (0.119 R)
• M20: 17,367,266 km (0.112 R)
• M21: 20,523,781 km (0.102 R)
• M22: 22,548,588 km (0.043 R)
• M23: 24,591,796 km (0.104 R)
• M24: 25,149,347 km (0.11 R)
• M25: 26,405,371 km (0.073 R)
• M26: 34,831,770 km (0.067 R)
• M27: 43,901,590 km (0.035 R)
• M28: 44,721,535 km (0.117 R)
• M29: 52,199,335 km (0.118 R)
• M30: 53,863,162 km (0.115 R)
• M31: 54,237,606 km (0.055 R)
• M32: 55,562,145 km (0.083 R)
• M33: 58,868,109 km (0.109 R)
• M34: 65,442,187 km (0.113 R)
• M35: 70,682,152 km (0.099 R)
• M36: 78,814,292 km (0.066 R)
• M37: 81,493,440 km (0.098 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 286 - 10,753 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit