🌌 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: 2.02

Radius: 1.32

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.52 AU - 0.56 AU

Year: 260 Days

Day: 19.7 Hours

Environment

Temp: -120 °C

Axial Tilt: 8.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 135.8

Radius: 9.5

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 0.77 AU - 0.79 AU

Year: 452 Days

Day: 5.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 33,246,088 km

• M1: 118,182 km (0.108 R)
• M2: 438,920 km (0.098 R)
• M3: 1,135,298 km (0.08 R)
• M4: 1,495,979 km (0.068 R)
• M5: 2,193,703 km (0.069 R)
• M6: 2,502,174 km (0.119 R)
• M7: 2,875,421 km (0.043 R)
• M8: 3,404,100 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 758.7

Radius: 12.9

Gravity: 4.56 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 2.15 AU - 3.27 AU

Year: 2927 Days

Day: 11.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 33,246,088 km

• M1: 160,369 km (0.107 R)
• M2: 578,196 km (0.096 R)
• M3: 998,416 km (0.106 R)
• M4: 1,733,989 km (0.09 R)
• M5: 2,486,167 km (0.037 R)
• M6: 4,594,599 km (0.115 R)
• M7: 5,086,028 km (0.1 R)
• M8: 6,286,551 km (0.073 R)
• M9: 7,829,205 km (0.095 R)
• M10: 8,567,620 km (0.116 R)
• M11: 9,875,703 km (0.071 R)
• M12: 10,819,068 km (0.065 R)
• M13: 11,271,152 km (0.088 R)
• M14: 12,345,564 km (0.068 R)
• M15: 12,885,164 km (0.113 R)
• M16: 13,393,348 km (0.06 R)
• M17: 14,499,624 km (0.094 R)
• M18: 16,298,538 km (0.046 R)
• M19: 17,447,001 km (0.059 R)
• M20: 18,357,604 km (0.116 R)
• M21: 20,584,817 km (0.095 R)
• M22: 21,601,633 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 526

Radius: 9.7

Gravity: 5.59 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 2.22 AU - 3.22 AU

Year: 2943 Days

Day: 11.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 33,246,088 km

• M1: 120,576 km (0.045 R)
• M2: 586,424 km (0.065 R)
• M3: 948,002 km (0.109 R)
• M4: 1,421,778 km (0.047 R)
• M5: 1,798,466 km (0.108 R)
• M6: 2,295,280 km (0.113 R)
• M7: 5,132,404 km (0.101 R)
• M8: 5,669,011 km (0.106 R)
• M9: 7,353,932 km (0.08 R)
• M10: 7,877,824 km (0.113 R)
• M11: 8,459,311 km (0.109 R)
• M12: 8,862,776 km (0.114 R)
• M13: 9,927,763 km (0.119 R)
• M14: 10,339,008 km (0.089 R)
• M15: 11,155,513 km (0.113 R)
• M16: 12,395,829 km (0.054 R)
• M17: 13,452,439 km (0.11 R)
• M18: 16,304,074 km (0.105 R)
• M19: 17,035,607 km (0.109 R)
• M20: 18,007,993 km (0.074 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 754.8

Radius: 13.5

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 2.71 AU - 4.17 AU

Year: 4185 Days

Day: 10 Hours

Environment

Temp: -215 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 33,246,088 km

• M1: 168,896 km (0.095 R)
• M2: 624,422 km (0.095 R)
• M3: 1,184,666 km (0.071 R)
• M4: 2,135,809 km (0.03 R)
• M5: 3,081,716 km (0.11 R)
• M6: 3,651,086 km (0.1 R)
• M7: 4,220,904 km (0.12 R)
• M8: 4,799,100 km (0.049 R)
• M9: 5,568,033 km (0.07 R)
• M10: 6,056,021 km (0.092 R)
• M11: 7,085,554 km (0.108 R)
• M12: 8,449,138 km (0.074 R)
• M13: 10,660,494 km (0.112 R)
• M14: 11,507,367 km (0.12 R)
• M15: 11,970,672 km (0.065 R)
• M16: 14,318,311 km (0.1 R)
• M17: 15,293,839 km (0.106 R)
• M18: 15,854,682 km (0.031 R)
• M19: 17,196,874 km (0.103 R)
• M20: 17,681,122 km (0.083 R)
• M21: 18,804,004 km (0.077 R)
• M22: 19,907,587 km (0.039 R)
• M23: 20,644,357 km (0.052 R)
• M24: 25,065,123 km (0.093 R)
• M25: 25,531,420 km (0.097 R)
• M26: 27,537,228 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 225.8

Radius: 9.1

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 3.31 AU - 3.93 AU

Year: 4518 Days

Day: 8 Hours

Environment

Temp: -198 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 33,246,088 km

• M1: 113,096 km (0.093 R)
• M2: 461,809 km (0.106 R)
• M3: 1,025,045 km (0.04 R)
• M4: 1,372,411 km (0.056 R)
• M5: 1,832,873 km (0.118 R)
• M6: 2,203,726 km (0.108 R)
• M7: 2,521,622 km (0.114 R)
• M8: 2,902,049 km (0.067 R)
• M9: 3,627,748 km (0.052 R)
• M10: 5,560,104 km (0.111 R)
• M11: 5,916,895 km (0.048 R)
• M12: 6,208,012 km (0.06 R)
• M13: 6,790,247 km (0.075 R)
• M14: 7,499,790 km (0.12 R)
• M15: 7,872,738 km (0.063 R)
• M16: 8,225,340 km (0.099 R)
• M17: 10,644,936 km (0.11 R)
• M18: 10,997,239 km (0.078 R)
• M19: 12,571,607 km (0.063 R)
• M20: 14,528,197 km (0.072 R)
• M21: 15,906,442 km (0.115 R)
• M22: 17,477,669 km (0.044 R)
• M23: 18,245,256 km (0.104 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 626.5

Radius: 9.2

Gravity: 7.4 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 4.73 AU - 5.47 AU

Year: 7556 Days

Day: 7.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 33,246,088 km

• M1: 114,442 km (0.051 R)
• M2: 491,579 km (0.111 R)
• M3: 855,101 km (0.116 R)
• M4: 1,909,916 km (0.085 R)
• M5: 2,432,461 km (0.092 R)
• M6: 2,904,891 km (0.107 R)
• M7: 3,787,369 km (0.099 R)
• M8: 8,139,171 km (0.105 R)
• M9: 11,688,530 km (0.085 R)
• M10: 12,214,517 km (0.085 R)
• M11: 13,088,916 km (0.093 R)
• M12: 17,889,063 km (0.084 R)
• M13: 21,332,507 km (0.034 R)
• M14: 23,168,372 km (0.077 R)
• M15: 35,019,665 km (0.057 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 211.4

Radius: 6.8

Gravity: 4.57 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 6.11 AU - 6.51 AU

Year: 10398 Days

Day: 21.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 65.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 33,246,088 km

• M1: 141,819 km (0.113 R)
• M2: 391,647 km (0.058 R)
• M3: 628,012 km (0.104 R)
• M4: 1,470,098 km (0.098 R)
• M5: 1,750,744 km (0.082 R)
• M6: 2,336,868 km (0.081 R)
• M7: 2,594,476 km (0.113 R)
• M8: 2,814,235 km (0.112 R)
• M9: 3,312,396 km (0.11 R)
• M10: 3,891,190 km (0.109 R)
• M11: 5,191,196 km (0.101 R)
• M12: 5,970,900 km (0.106 R)
• M13: 7,723,140 km (0.072 R)
• M14: 9,318,302 km (0.078 R)
• M15: 9,836,658 km (0.114 R)
• M16: 12,256,853 km (0.083 R)
• M17: 13,963,016 km (0.046 R)
• M18: 14,413,007 km (0.106 R)
• M19: 15,761,033 km (0.1 R)
• M20: 17,063,283 km (0.061 R)
• M21: 17,319,245 km (0.058 R)
• M22: 17,577,750 km (0.092 R)
• M23: 19,460,140 km (0.06 R)
• M24: 21,547,180 km (0.094 R)
• M25: 22,072,418 km (0.086 R)
• M26: 27,103,993 km (0.086 R)
• M27: 28,967,683 km (0.051 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 314 - 11,544 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit