🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.41

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.44 AU - 0.6 AU

Year: 238 Days

Day: 29.1 Hours

Environment

Temp: -121 °C

Axial Tilt: 14.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 33,326,438 km

• M1: 55,351 km (0.115 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 621.8

Radius: 13.3

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.67 AU - 0.87 AU

Year: 430 Days

Day: 9.8 Hours

Environment

Temp: -140 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 33,326,438 km

• M1: 165,455 km (0.094 R)
• M2: 611,107 km (0.115 R)
• M3: 1,146,518 km (0.109 R)
• M4: 1,560,755 km (0.068 R)
• M5: 2,102,299 km (0.11 R)
• M6: 2,921,796 km (0.098 R)
• M7: 3,441,499 km (0.1 R)
• M8: 4,289,719 km (0.069 R)
• M9: 5,480,069 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.6

Radius: 10.3

Gravity: 7.38 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.64 AU - 0.94 AU

Year: 446 Days

Day: 7.1 Hours

Environment

Temp: -153 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 33,326,438 km

• M1: 128,056 km (0.114 R)
• M2: 633,098 km (0.113 R)
• M3: 1,248,245 km (0.052 R)
• M4: 1,643,632 km (0.108 R)
• M5: 1,986,211 km (0.03 R)
• M6: 2,581,162 km (0.108 R)
• M7: 3,244,030 km (0.044 R)
• M8: 4,210,432 km (0.113 R)
• M9: 4,768,432 km (0.114 R)
• M10: 5,441,772 km (0.09 R)
• M11: 5,907,321 km (0.035 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 74.6

Radius: 14.3

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 0.96 AU - 1.02 AU

Year: 626 Days

Day: 11.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 33,326,438 km

• M1: 179,517 km (0.114 R)
• M2: 1,133,503 km (0.06 R)
• M3: 2,140,297 km (0.089 R)
• M4: 2,894,270 km (0.097 R)
• M5: 3,349,197 km (0.064 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.1

Radius: 11.5

Gravity: 6.44 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 2.3 AU - 2.62 AU

Year: 2453 Days

Day: 5.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 33,326,438 km

• M1: 145,858 km (0.12 R)
• M2: 550,969 km (0.07 R)
• M3: 931,097 km (0.11 R)
• M4: 1,607,429 km (0.057 R)
• M5: 1,970,204 km (0.081 R)
• M6: 2,694,706 km (0.092 R)
• M7: 3,061,072 km (0.1 R)
• M8: 4,034,954 km (0.055 R)
• M9: 5,523,453 km (0.063 R)
• M10: 5,986,608 km (0.11 R)
• M11: 6,475,493 km (0.075 R)
• M12: 7,258,937 km (0.083 R)
• M13: 8,669,795 km (0.084 R)
• M14: 11,525,170 km (0.088 R)
• M15: 13,165,361 km (0.083 R)
• M16: 15,005,115 km (0.079 R)
• M17: 15,503,276 km (0.109 R)
• M18: 16,743,891 km (0.096 R)
• M19: 18,670,263 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 350.5

Radius: 9.7

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 2.9 AU - 4 AU

Year: 4074 Days

Day: 8.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 33,326,438 km

• M1: 121,025 km (0.095 R)
• M2: 973,433 km (0.114 R)
• M3: 1,279,361 km (0.11 R)
• M4: 1,706,313 km (0.103 R)
• M5: 2,213,450 km (0.101 R)
• M6: 2,867,043 km (0.081 R)
• M7: 3,419,508 km (0.084 R)
• M8: 3,819,533 km (0.086 R)
• M9: 4,208,188 km (0.069 R)
• M10: 4,511,423 km (0.115 R)
• M11: 4,993,727 km (0.115 R)
• M12: 5,638,344 km (0.108 R)
• M13: 6,198,588 km (0.061 R)
• M14: 6,592,329 km (0.106 R)
• M15: 7,650,585 km (0.07 R)
• M16: 8,304,028 km (0.061 R)
• M17: 9,029,727 km (0.088 R)
• M18: 9,759,615 km (0.062 R)
• M19: 11,713,962 km (0.101 R)
• M20: 12,760,698 km (0.112 R)
• M21: 13,492,382 km (0.097 R)
• M22: 16,971,729 km (0.039 R)
• M23: 17,521,202 km (0.092 R)
• M24: 18,139,340 km (0.102 R)
• M25: 18,713,646 km (0.088 R)
• M26: 20,020,085 km (0.099 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 674.9

Radius: 9.2

Gravity: 7.97 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 3.53 AU - 4.99 AU

Year: 5590 Days

Day: 11.4 Hours

Environment

Temp: -209 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 33,326,438 km

• M1: 116,537 km (0.112 R)
• M2: 430,543 km (0.074 R)
• M3: 1,211,444 km (0.1 R)
• M4: 1,940,733 km (0.092 R)
• M5: 3,274,398 km (0.117 R)
• M6: 5,053,416 km (0.045 R)
• M7: 6,440,039 km (0.091 R)
• M8: 6,942,837 km (0.074 R)
• M9: 8,102,669 km (0.05 R)
• M10: 8,569,415 km (0.079 R)
• M11: 9,471,789 km (0.037 R)
• M12: 10,802,313 km (0.117 R)
• M13: 11,805,217 km (0.078 R)
• M14: 12,102,917 km (0.057 R)
• M15: 12,661,515 km (0.107 R)
• M16: 12,973,576 km (0.084 R)
• M17: 14,610,925 km (0.088 R)
• M18: 15,597,672 km (0.041 R)
• M19: 17,832,964 km (0.045 R)
• M20: 18,690,160 km (0.098 R)
• M21: 24,259,838 km (0.111 R)
• M22: 29,008,374 km (0.114 R)
• M23: 30,938,186 km (0.092 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 33.6

Radius: 10.5

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 5.36 AU - 6.5 AU

Year: 9182 Days

Day: 9.1 Hours

Environment

Temp: -229 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 33,326,438 km

• M1: 133,441 km (0.118 R)
• M2: 771,177 km (0.091 R)
• M3: 1,859,801 km (0.102 R)
• M4: 3,256,895 km (0.116 R)
• M5: 3,594,538 km (0.105 R)
• M6: 4,709,491 km (0.091 R)
• M7: 6,141,591 km (0.093 R)
• M8: 7,964,441 km (0.109 R)
• M9: 9,398,187 km (0.108 R)
• M10: 10,626,834 km (0.112 R)
• M11: 12,728,236 km (0.113 R)
• M12: 13,572,416 km (0.095 R)
• M13: 15,894,175 km (0.101 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 225.6

Radius: 7

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 5.16 AU - 7.48 AU

Year: 10102 Days

Day: 24.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 33,326,438 km

• M1: 87,066 km (0.087 R)
• M2: 535,112 km (0.112 R)
• M3: 1,381,985 km (0.082 R)
• M4: 1,939,985 km (0.119 R)
• M5: 2,411,667 km (0.09 R)
• M6: 3,055,836 km (0.043 R)
• M7: 5,120,137 km (0.082 R)
• M8: 6,307,794 km (0.118 R)
• M9: 7,932,577 km (0.101 R)
• M10: 9,686,761 km (0.091 R)
• M11: 9,994,933 km (0.105 R)
• M12: 12,858,984 km (0.083 R)
• M13: 16,043,624 km (0.104 R)
• M14: 19,438,448 km (0.112 R)
• M15: 20,142,007 km (0.076 R)
• M16: 22,202,568 km (0.081 R)
• M17: 23,837,224 km (0.12 R)
• M18: 24,318,630 km (0.067 R)
• M19: 25,467,093 km (0.116 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 385 - 18,484 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit