🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.66

Radius: 0.85

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.55 AU - 0.57 AU

Year: 275 Days

Day: 21.7 Hours

Environment

Temp: -114 °C

Axial Tilt: 111.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.52 AU - 0.74 AU

Year: 328 Days

Day: 44.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 89.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.07

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.49 AU - 0.81 AU

Year: 344 Days

Day: 22.9 Hours

Environment

Temp: -129 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 826.1

Radius: 11.6

Gravity: 6.14 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.66 AU - 0.88 AU

Year: 443 Days

Day: 6.4 Hours

Environment

Temp: -152 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 95,827,600 km

• M1: 144,362 km (0.117 R)
• M2: 506,239 km (0.109 R)
• M3: 1,258,866 km (0.112 R)
• M4: 1,720,974 km (0.068 R)
• M5: 2,370,229 km (0.11 R)
• M6: 2,853,729 km (0.092 R)
• M7: 3,550,406 km (0.058 R)
• M8: 4,328,465 km (0.108 R)
• M9: 4,773,818 km (0.112 R)
• M10: 5,168,158 km (0.113 R)
• M11: 6,040,912 km (0.074 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 635.9

Radius: 8.3

Gravity: 9.23 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.43 AU - 2.01 AU

Year: 1480 Days

Day: 6.9 Hours

Environment

Temp: -189 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 95,827,600 km

• M1: 106,214 km (0.042 R)
• M2: 464,202 km (0.067 R)
• M3: 804,238 km (0.118 R)
• M4: 1,907,074 km (0.114 R)
• M5: 2,298,122 km (0.114 R)
• M6: 2,850,887 km (0.12 R)
• M7: 3,651,086 km (0.079 R)
• M8: 4,631,700 km (0.115 R)
• M9: 4,927,305 km (0.029 R)
• M10: 5,845,537 km (0.107 R)
• M11: 6,624,493 km (0.038 R)
• M12: 6,924,287 km (0.09 R)
• M13: 11,693,766 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 745.3

Radius: 12.7

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 2.14 AU - 2.24 AU

Year: 2126 Days

Day: 6.9 Hours

Environment

Temp: -186 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 95,827,600 km

• M1: 158,723 km (0.106 R)
• M2: 560,842 km (0.094 R)
• M3: 1,039,556 km (0.119 R)
• M4: 1,580,651 km (0.046 R)
• M5: 2,106,787 km (0.111 R)
• M6: 2,778,332 km (0.096 R)
• M7: 4,225,990 km (0.09 R)
• M8: 4,741,654 km (0.09 R)
• M9: 5,606,031 km (0.087 R)
• M10: 7,238,891 km (0.038 R)
• M11: 8,512,568 km (0.081 R)
• M12: 10,509,998 km (0.066 R)
• M13: 10,959,540 km (0.118 R)
• M14: 13,272,772 km (0.068 R)
• M15: 14,292,581 km (0.068 R)
• M16: 15,992,760 km (0.11 R)
• M17: 16,891,694 km (0.105 R)
• M18: 17,405,413 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 238.7

Radius: 9.2

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 2.43 AU - 3.51 AU

Year: 3358 Days

Day: 5.5 Hours

Environment

Temp: -197 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 95,827,600 km

• M1: 117,135 km (0.083 R)
• M2: 722,707 km (0.107 R)
• M3: 1,926,372 km (0.052 R)
• M4: 2,986,572 km (0.039 R)
• M5: 3,320,624 km (0.094 R)
• M6: 4,415,980 km (0.115 R)
• M7: 4,937,478 km (0.094 R)
• M8: 5,452,992 km (0.112 R)
• M9: 5,856,757 km (0.062 R)
• M10: 10,370,274 km (0.072 R)
• M11: 12,631,895 km (0.093 R)
• M12: 13,003,645 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 823.8

Radius: 8

Gravity: 12.87 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 8.02 AU - 11.34 AU

Year: 19757 Days

Day: 22.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 95,827,600 km

• M1: 115,190 km (0.084 R)
• M2: 566,976 km (0.074 R)
• M3: 929,900 km (0.07 R)
• M4: 1,207,554 km (0.112 R)
• M5: 1,557,763 km (0.082 R)
• M6: 1,935,647 km (0.03 R)
• M7: 2,534,038 km (0.119 R)
• M8: 3,625,504 km (0.109 R)
• M9: 4,126,956 km (0.029 R)
• M10: 4,428,845 km (0.109 R)
• M11: 5,705,364 km (0.097 R)
• M12: 6,974,402 km (0.117 R)
• M13: 8,055,546 km (0.074 R)
• M14: 9,188,002 km (0.08 R)
• M15: 12,512,516 km (0.105 R)
• M16: 12,862,425 km (0.11 R)
• M17: 13,581,991 km (0.114 R)
• M18: 14,480,475 km (0.057 R)
• M19: 18,204,714 km (0.043 R)
• M20: 20,334,539 km (0.067 R)
• M21: 22,419,485 km (0.063 R)
• M22: 24,642,808 km (0.11 R)
• M23: 32,978,551 km (0.036 R)
• M24: 33,378,427 km (0.093 R)
• M25: 34,187,901 km (0.114 R)
• M26: 34,872,460 km (0.045 R)
• M27: 35,565,996 km (0.102 R)
• M28: 38,432,591 km (0.074 R)
• M29: 40,528,457 km (0.11 R)
• M30: 52,884,642 km (0.069 R)
• M31: 53,432,470 km (0.114 R)
• M32: 59,712,140 km (0.096 R)
• M33: 68,825,941 km (0.03 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 947.8

Radius: 4.9

Gravity: 39.48 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 10.1 AU - 11.96 AU

Year: 24031 Days

Day: 18.4 Hours

Environment

Temp: -240 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 95,827,600 km

• M1: 61,485 km (0.094 R)
• M2: 329,415 km (0.114 R)
• M3: 738,714 km (0.07 R)
• M4: 3,169,680 km (0.051 R)
• M5: 5,698,183 km (0.103 R)
• M6: 6,328,888 km (0.114 R)
• M7: 7,728,376 km (0.105 R)
• M8: 9,504,551 km (0.079 R)
• M9: 9,940,330 km (0.099 R)
• M10: 11,676,263 km (0.083 R)
• M11: 13,839,598 km (0.083 R)
• M12: 16,521,290 km (0.065 R)
• M13: 17,983,609 km (0.063 R)
• M14: 19,829,647 km (0.077 R)
• M15: 27,593,477 km (0.096 R)
• M16: 27,970,613 km (0.107 R)
• M17: 40,949,276 km (0.116 R)
• M18: 44,638,808 km (0.076 R)
• M19: 55,215,826 km (0.114 R)
• M20: 61,827,753 km (0.077 R)
• M21: 65,769,208 km (0.118 R)
• M22: 83,734,416 km (0.056 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 268 - 14,953 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit