🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.58 AU - 0.68 AU

Year: 328 Days

Day: 29.2 Hours

Environment

Temp: -130 °C

Axial Tilt: 12.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510.3

Radius: 9.4

Gravity: 5.78 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.84 AU - 1.04 AU

Year: 598 Days

Day: 12.8 Hours

Environment

Temp: -152 °C

Axial Tilt: 47.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 41,053,171 km

• M1: 116,986 km (0.038 R)
• M2: 803,191 km (0.11 R)
• M3: 1,370,765 km (0.091 R)
• M4: 2,452,956 km (0.088 R)
• M5: 3,073,488 km (0.055 R)
• M6: 3,396,320 km (0.095 R)
• M7: 3,755,206 km (0.06 R)
• M8: 4,068,912 km (0.057 R)
• M9: 5,067,777 km (0.069 R)
• M10: 5,434,891 km (0.09 R)
• M11: 6,297,622 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.8

Radius: 13.3

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.82 AU - 1.34 AU

Year: 736 Days

Day: 5.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 41,053,171 km

• M1: 165,455 km (0.081 R)
• M2: 625,469 km (0.112 R)
• M3: 1,602,343 km (0.052 R)
• M4: 2,300,366 km (0.11 R)
• M5: 2,733,153 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.5

Radius: 9.7

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 2.31 AU - 3.73 AU

Year: 3443 Days

Day: 12.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 41,053,171 km

• M1: 121,922 km (0.084 R)
• M2: 658,530 km (0.06 R)
• M3: 1,061,397 km (0.109 R)
• M4: 1,637,498 km (0.078 R)
• M5: 2,610,632 km (0.117 R)
• M6: 3,029,656 km (0.097 R)
• M7: 3,459,750 km (0.059 R)
• M8: 3,768,819 km (0.116 R)
• M9: 4,171,836 km (0.116 R)
• M10: 7,142,850 km (0.079 R)
• M11: 8,508,828 km (0.111 R)
• M12: 10,854,971 km (0.047 R)
• M13: 12,693,679 km (0.112 R)
• M14: 13,308,526 km (0.075 R)
• M15: 14,421,235 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 348.8

Radius: 10.7

Gravity: 3.05 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 2.95 AU - 3.71 AU

Year: 3986 Days

Day: 11.3 Hours

Environment

Temp: -212 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 41,053,171 km

• M1: 135,236 km (0.05 R)
• M2: 474,674 km (0.11 R)
• M3: 814,411 km (0.047 R)
• M4: 1,605,335 km (0.101 R)
• M5: 2,022,713 km (0.074 R)
• M6: 2,425,430 km (0.052 R)
• M7: 2,963,085 km (0.076 R)
• M8: 3,907,945 km (0.074 R)
• M9: 4,342,228 km (0.097 R)
• M10: 5,432,347 km (0.058 R)
• M11: 7,138,212 km (0.095 R)
• M12: 8,179,413 km (0.108 R)
• M13: 9,283,146 km (0.095 R)
• M14: 9,796,117 km (0.081 R)
• M15: 10,444,325 km (0.053 R)
• M16: 11,120,956 km (0.09 R)
• M17: 12,917,926 km (0.105 R)
• M18: 13,326,926 km (0.084 R)
• M19: 14,459,981 km (0.079 R)
• M20: 15,913,324 km (0.055 R)
• M21: 16,916,826 km (0.11 R)
• M22: 17,906,117 km (0.108 R)
• M23: 19,999,590 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 53.4

Radius: 11.3

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 5.03 AU - 6.23 AU

Year: 8763 Days

Day: 14.7 Hours

Environment

Temp: -224 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 41,053,171 km

• M1: 140,472 km (0.048 R)
• M2: 613,501 km (0.116 R)
• M3: 973,134 km (0.088 R)
• M4: 1,470,697 km (0.108 R)
• M5: 3,120,163 km (0.096 R)
• M6: 5,134,498 km (0.028 R)
• M7: 5,663,177 km (0.084 R)
• M8: 7,291,550 km (0.113 R)
• M9: 11,691,373 km (0.112 R)
• M10: 15,158,603 km (0.105 R)
• M11: 16,709,334 km (0.06 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 515.2

Radius: 8.2

Gravity: 7.66 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 4.68 AU - 6.9 AU

Year: 9140 Days

Day: 10.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 41,053,171 km

• M1: 106,813 km (0.099 R)
• M2: 387,309 km (0.108 R)
• M3: 734,226 km (0.059 R)
• M4: 991,385 km (0.1 R)
• M5: 1,614,161 km (0.102 R)
• M6: 1,996,683 km (0.105 R)
• M7: 2,296,178 km (0.069 R)
• M8: 2,945,133 km (0.081 R)
• M9: 4,326,520 km (0.071 R)
• M10: 4,687,649 km (0.093 R)
• M11: 5,008,836 km (0.111 R)
• M12: 6,198,737 km (0.053 R)
• M13: 7,293,644 km (0.071 R)
• M14: 7,725,832 km (0.118 R)
• M15: 11,244,674 km (0.084 R)
• M16: 12,978,363 km (0.114 R)
• M17: 13,438,227 km (0.085 R)
• M18: 13,968,402 km (0.083 R)
• M19: 19,386,388 km (0.059 R)
• M20: 23,602,056 km (0.12 R)
• M21: 26,058,453 km (0.114 R)
• M22: 27,068,388 km (0.07 R)
• M23: 29,362,322 km (0.091 R)
• M24: 30,961,673 km (0.105 R)
• M25: 32,723,637 km (0.071 R)
• M26: 34,333,011 km (0.058 R)
• M27: 36,787,762 km (0.118 R)
• M28: 39,476,784 km (0.093 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 487 - 19,399 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit