🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.2

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.47 AU - 0.61 AU

Year: 252 Days

Day: 47.6 Hours

Environment

Temp: -127 °C

Axial Tilt: 9.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 334.7

Radius: 11.6

Gravity: 2.49 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.62 AU - 0.74 AU

Year: 357 Days

Day: 12.5 Hours

Environment

Temp: -145 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 44,584,156 km

• M1: 144,212 km (0.115 R)
• M2: 533,316 km (0.118 R)
• M3: 938,128 km (0.063 R)
• M4: 1,412,353 km (0.118 R)
• M5: 1,822,102 km (0.115 R)
• M6: 2,233,197 km (0.072 R)
• M7: 3,001,382 km (0.111 R)
• M8: 3,473,812 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 840.6

Radius: 11.1

Gravity: 6.82 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.73 AU - 0.73 AU

Year: 397 Days

Day: 13.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 44,584,156 km

• M1: 138,079 km (0.076 R)
• M2: 617,839 km (0.11 R)
• M3: 976,874 km (0.081 R)
• M4: 1,397,244 km (0.089 R)
• M5: 1,806,394 km (0.11 R)
• M6: 2,154,808 km (0.12 R)
• M7: 2,567,997 km (0.119 R)
• M8: 3,111,636 km (0.092 R)
• M9: 3,667,841 km (0.112 R)
• M10: 4,331,457 km (0.106 R)
• M11: 4,722,057 km (0.111 R)
• M12: 5,376,847 km (0.119 R)
• M13: 5,898,046 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 918.4

Radius: 9.4

Gravity: 10.39 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.77 AU - 1.21 AU

Year: 626 Days

Day: 11.6 Hours

Environment

Temp: -167 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 44,584,156 km

• M1: 116,986 km (0.075 R)
• M2: 428,598 km (0.049 R)
• M3: 793,467 km (0.071 R)
• M4: 1,239,568 km (0.111 R)
• M5: 1,813,425 km (0.108 R)
• M6: 2,201,482 km (0.103 R)
• M7: 3,287,862 km (0.071 R)
• M8: 3,753,261 km (0.11 R)
• M9: 4,404,311 km (0.074 R)
• M10: 5,491,738 km (0.102 R)
• M11: 6,009,047 km (0.083 R)
• M12: 7,119,063 km (0.114 R)
• M13: 7,734,509 km (0.11 R)
• M14: 8,335,593 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 768.6

Radius: 8.5

Gravity: 10.64 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.28 AU - 1.94 AU

Year: 1299 Days

Day: 6.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 44,584,156 km

• M1: 105,915 km (0.068 R)
• M2: 483,201 km (0.027 R)
• M3: 834,307 km (0.096 R)
• M4: 1,267,842 km (0.061 R)
• M5: 1,560,007 km (0.111 R)
• M6: 1,970,503 km (0.06 R)
• M7: 2,366,489 km (0.103 R)
• M8: 3,364,905 km (0.058 R)
• M9: 3,731,420 km (0.097 R)
• M10: 4,036,749 km (0.069 R)
• M11: 4,736,568 km (0.095 R)
• M12: 5,689,057 km (0.108 R)
• M13: 8,024,131 km (0.11 R)
• M14: 9,067,127 km (0.104 R)
• M15: 9,465,057 km (0.063 R)
• M16: 10,197,788 km (0.068 R)
• M17: 12,176,219 km (0.063 R)
• M18: 12,473,022 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 839.9

Radius: 10.6

Gravity: 7.48 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 3.63 AU - 4.45 AU

Year: 5163 Days

Day: 13.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 44,584,156 km

• M1: 131,796 km (0.078 R)
• M2: 547,827 km (0.066 R)
• M3: 885,171 km (0.098 R)
• M4: 1,494,034 km (0.034 R)
• M5: 1,838,408 km (0.093 R)
• M6: 2,533,590 km (0.056 R)
• M7: 2,952,314 km (0.077 R)
• M8: 3,883,561 km (0.11 R)
• M9: 4,890,504 km (0.062 R)
• M10: 5,281,553 km (0.108 R)
• M11: 5,784,202 km (0.114 R)
• M12: 6,351,178 km (0.097 R)
• M13: 7,670,032 km (0.101 R)
• M14: 8,315,846 km (0.095 R)
• M15: 10,748,457 km (0.088 R)
• M16: 11,606,252 km (0.119 R)
• M17: 13,136,488 km (0.119 R)
• M18: 15,918,709 km (0.098 R)
• M19: 16,469,379 km (0.12 R)
• M20: 17,032,765 km (0.11 R)
• M21: 21,342,380 km (0.085 R)
• M22: 23,159,546 km (0.086 R)
• M23: 27,185,823 km (0.108 R)
• M24: 28,416,714 km (0.047 R)
• M25: 30,989,199 km (0.087 R)
• M26: 32,332,139 km (0.074 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 236.5

Radius: 7

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 7.58 AU - 10.14 AU

Year: 16768 Days

Day: 20.8 Hours

Environment

Temp: -237 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 44,584,156 km

• M1: 188,793 km (0.118 R)
• M2: 988,842 km (0.12 R)
• M3: 1,242,410 km (0.091 R)
• M4: 1,596,209 km (0.086 R)
• M5: 2,242,472 km (0.1 R)
• M6: 2,585,350 km (0.064 R)
• M7: 3,497,598 km (0.073 R)
• M8: 4,638,282 km (0.087 R)
• M9: 10,577,766 km (0.06 R)
• M10: 12,389,696 km (0.082 R)
• M11: 17,186,402 km (0.106 R)
• M12: 21,047,672 km (0.119 R)
• M13: 22,224,260 km (0.119 R)
• M14: 25,356,839 km (0.066 R)
• M15: 26,207,453 km (0.111 R)
• M16: 32,591,691 km (0.109 R)
• M17: 36,976,554 km (0.088 R)
• M18: 40,961,243 km (0.119 R)
• M19: 42,526,486 km (0.034 R)
• M20: 44,402,593 km (0.103 R)
• M21: 44,811,593 km (0.116 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 154.6

Radius: 7.6

Gravity: 2.68 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 7.72 AU - 11.46 AU

Year: 18883 Days

Day: 23.2 Hours

Environment

Temp: -228 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 44,584,156 km

• M1: 94,546 km (0.094 R)
• M2: 337,044 km (0.101 R)
• M3: 608,115 km (0.053 R)
• M4: 1,019,809 km (0.103 R)
• M5: 1,607,728 km (0.11 R)
• M6: 2,275,683 km (0.074 R)
• M7: 2,774,442 km (0.072 R)
• M8: 3,028,160 km (0.118 R)
• M9: 7,296,487 km (0.05 R)
• M10: 7,577,581 km (0.106 R)
• M11: 8,910,348 km (0.112 R)
• M12: 12,032,755 km (0.115 R)
• M13: 16,085,212 km (0.117 R)
• M14: 18,863,544 km (0.112 R)
• M15: 23,303,010 km (0.105 R)
• M16: 24,090,194 km (0.111 R)
• M17: 30,724,111 km (0.112 R)
• M18: 31,776,533 km (0.113 R)
• M19: 32,419,504 km (0.081 R)
• M20: 33,620,625 km (0.104 R)
• M21: 37,520,642 km (0.1 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 314 - 17,460 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit