🌌 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: 0.87

Radius: 0.95

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.58 AU - 0.74 AU

Year: 352 Days

Day: 21.5 Hours

Environment

Temp: -132 °C

Axial Tilt: 41 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.6

Radius: 9.5

Gravity: 5.97 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.81 AU - 1.25 AU

Year: 686 Days

Day: 12.9 Hours

Environment

Temp: -167 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 36,144,478 km

• M1: 119,080 km (0.085 R)
• M2: 560,842 km (0.092 R)
• M3: 880,234 km (0.093 R)
• M4: 1,185,713 km (0.118 R)
• M5: 1,570,927 km (0.097 R)
• M6: 1,907,373 km (0.048 R)
• M7: 2,234,244 km (0.026 R)
• M8: 2,535,086 km (0.092 R)
• M9: 2,932,268 km (0.116 R)
• M10: 3,880,718 km (0.098 R)
• M11: 5,071,817 km (0.115 R)
• M12: 5,742,464 km (0.109 R)
• M13: 6,137,701 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 789

Radius: 10.5

Gravity: 7.16 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.09 AU - 1.57 AU

Year: 1006 Days

Day: 11.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 36,144,478 km

• M1: 130,599 km (0.082 R)
• M2: 516,561 km (0.112 R)
• M3: 990,338 km (0.048 R)
• M4: 1,472,941 km (0.025 R)
• M5: 1,812,229 km (0.07 R)
• M6: 2,172,161 km (0.067 R)
• M7: 2,690,069 km (0.103 R)
• M8: 3,120,911 km (0.063 R)
• M9: 3,552,201 km (0.086 R)
• M10: 4,535,508 km (0.089 R)
• M11: 4,863,427 km (0.112 R)
• M12: 5,305,638 km (0.094 R)
• M13: 6,095,216 km (0.11 R)
• M14: 6,913,815 km (0.072 R)
• M15: 8,411,589 km (0.099 R)
• M16: 8,768,679 km (0.06 R)
• M17: 9,631,859 km (0.081 R)
• M18: 10,550,839 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 472.8

Radius: 9.2

Gravity: 5.59 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.26 AU - 1.44 AU

Year: 1029 Days

Day: 7.7 Hours

Environment

Temp: -167 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 36,144,478 km

• M1: 114,442 km (0.117 R)
• M2: 409,898 km (0.088 R)
• M3: 698,024 km (0.12 R)
• M4: 1,269,787 km (0.118 R)
• M5: 1,585,289 km (0.081 R)
• M6: 2,079,111 km (0.048 R)
• M7: 2,840,714 km (0.108 R)
• M8: 3,688,485 km (0.116 R)
• M9: 4,424,207 km (0.036 R)
• M10: 4,800,745 km (0.119 R)
• M11: 5,161,575 km (0.112 R)
• M12: 5,917,493 km (0.071 R)
• M13: 6,834,379 km (0.117 R)
• M14: 7,794,199 km (0.069 R)
• M15: 8,499,553 km (0.116 R)
• M16: 8,814,606 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 83.7

Radius: 8.8

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 1.06 AU - 1.64 AU

Year: 1029 Days

Day: 11.5 Hours

Environment

Temp: -172 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 36,144,478 km

• M1: 113,096 km (0.114 R)
• M2: 401,221 km (0.112 R)
• M3: 937,231 km (0.11 R)
• M4: 1,258,716 km (0.045 R)
• M5: 1,613,263 km (0.077 R)
• M6: 2,275,384 km (0.05 R)
• M7: 3,151,130 km (0.106 R)
• M8: 3,641,960 km (0.095 R)
• M9: 3,962,848 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 683.7

Radius: 8.2

Gravity: 10.17 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 3.86 AU - 6.15 AU

Year: 7334 Days

Day: 15 Hours

Environment

Temp: -211 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 36,144,478 km

• M1: 102,026 km (0.06 R)
• M2: 446,550 km (0.099 R)
• M3: 858,393 km (0.07 R)
• M4: 1,151,156 km (0.105 R)
• M5: 1,411,306 km (0.077 R)
• M6: 2,086,142 km (0.081 R)
• M7: 2,460,436 km (0.075 R)
• M8: 3,762,087 km (0.095 R)
• M9: 4,589,962 km (0.109 R)
• M10: 5,135,994 km (0.049 R)
• M11: 5,886,826 km (0.12 R)
• M12: 7,147,487 km (0.091 R)
• M13: 7,644,152 km (0.051 R)
• M14: 10,625,787 km (0.063 R)
• M15: 12,700,859 km (0.096 R)
• M16: 14,605,091 km (0.063 R)
• M17: 15,975,557 km (0.064 R)
• M18: 19,773,547 km (0.092 R)
• M19: 20,371,789 km (0.078 R)
• M20: 22,159,334 km (0.116 R)
• M21: 23,629,432 km (0.051 R)
• M22: 27,587,044 km (0.062 R)
• M23: 28,239,889 km (0.113 R)
• M24: 29,286,626 km (0.118 R)
• M25: 32,893,281 km (0.059 R)
• M26: 36,785,368 km (0.105 R)
• M27: 37,349,203 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 603.5

Radius: 13.7

Gravity: 3.22 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 4.51 AU - 5.59 AU

Year: 7445 Days

Day: 15 Hours

Environment

Temp: -217 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 36,144,478 km

• M1: 170,392 km (0.106 R)
• M2: 771,626 km (0.079 R)
• M3: 1,333,665 km (0.052 R)
• M4: 1,997,580 km (0.088 R)
• M5: 3,199,749 km (0.09 R)
• M6: 3,875,632 km (0.073 R)
• M7: 4,430,640 km (0.12 R)
• M8: 5,423,222 km (0.105 R)
• M9: 5,859,898 km (0.12 R)
• M10: 7,926,742 km (0.102 R)
• M11: 10,299,963 km (0.119 R)
• M12: 11,881,063 km (0.098 R)
• M13: 13,169,250 km (0.04 R)
• M14: 16,664,754 km (0.027 R)
• M15: 17,124,767 km (0.116 R)
• M16: 23,002,468 km (0.074 R)
• M17: 27,289,344 km (0.091 R)
• M18: 30,491,487 km (0.072 R)
• M19: 31,081,501 km (0.111 R)
• M20: 32,794,546 km (0.107 R)
• M21: 35,104,038 km (0.077 R)
• M22: 35,535,329 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 224.9

Radius: 6.3

Gravity: 5.67 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 5.28 AU - 8.16 AU

Year: 11428 Days

Day: 17.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 36,144,478 km

• M1: 78,539 km (0.102 R)
• M2: 380,128 km (0.114 R)
• M3: 870,061 km (0.115 R)
• M4: 1,598,304 km (0.103 R)
• M5: 3,213,811 km (0.083 R)
• M6: 3,453,317 km (0.074 R)
• M7: 3,775,252 km (0.098 R)
• M8: 4,723,254 km (0.075 R)
• M9: 6,583,353 km (0.115 R)
• M10: 6,899,155 km (0.116 R)
• M11: 8,025,477 km (0.055 R)
• M12: 8,426,848 km (0.103 R)
• M13: 8,968,392 km (0.05 R)
• M14: 9,182,766 km (0.116 R)
• M15: 9,756,175 km (0.108 R)
• M16: 10,120,745 km (0.092 R)
• M17: 11,670,728 km (0.12 R)
• M18: 11,926,391 km (0.072 R)
• M19: 12,133,584 km (0.106 R)
• M20: 12,502,193 km (0.087 R)
• M21: 13,316,903 km (0.115 R)
• M22: 14,051,130 km (0.066 R)
• M23: 18,200,077 km (0.117 R)
• M24: 20,626,106 km (0.081 R)
• M25: 23,339,961 km (0.092 R)
• M26: 25,418,174 km (0.104 R)
• M27: 25,675,632 km (0.118 R)
• M28: 26,722,668 km (0.079 R)
• M29: 27,436,399 km (0.111 R)
• M30: 27,979,888 km (0.069 R)
• M31: 28,715,610 km (0.056 R)
• M32: 30,805,642 km (0.114 R)
• M33: 32,791,704 km (0.066 R)
• M34: 35,392,313 km (0.032 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 354 - 18,424 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit