🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.65

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.43 AU - 0.63 AU

Year: 245 Days

Day: 23.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 25,731,001 km

• M1: 597,344 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 779.7

Radius: 9.8

Gravity: 8.12 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.58 AU - 0.82 AU

Year: 372 Days

Day: 8.5 Hours

Environment

Temp: -134 °C

Axial Tilt: 117.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 25,731,001 km

• M1: 121,922 km (0.09 R)
• M2: 453,282 km (0.117 R)
• M3: 829,071 km (0.104 R)
• M4: 1,143,526 km (0.08 R)
• M5: 1,593,517 km (0.102 R)
• M6: 1,899,594 km (0.112 R)
• M7: 2,360,954 km (0.026 R)
• M8: 2,682,589 km (0.075 R)
• M9: 3,380,613 km (0.118 R)
• M10: 3,691,926 km (0.07 R)
• M11: 5,166,063 km (0.088 R)
• M12: 5,515,524 km (0.058 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 972.7

Radius: 9.8

Gravity: 10.13 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.9 AU - 1.28 AU

Year: 724 Days

Day: 14.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 25,731,001 km

• M1: 122,221 km (0.101 R)
• M2: 468,989 km (0.106 R)
• M3: 840,740 km (0.06 R)
• M4: 1,559,707 km (0.064 R)
• M5: 1,970,354 km (0.114 R)
• M6: 2,290,643 km (0.105 R)
• M7: 2,599,413 km (0.098 R)
• M8: 2,986,871 km (0.084 R)
• M9: 3,384,801 km (0.034 R)
• M10: 3,728,577 km (0.116 R)
• M11: 4,867,017 km (0.118 R)
• M12: 5,268,837 km (0.111 R)
• M13: 5,653,304 km (0.092 R)
• M14: 6,328,588 km (0.075 R)
• M15: 6,674,907 km (0.05 R)
• M16: 7,264,772 km (0.11 R)
• M17: 8,732,477 km (0.056 R)
• M18: 9,327,427 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 897.5

Radius: 14.7

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 1.13 AU - 1.39 AU

Year: 899 Days

Day: 11.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 25,731,001 km

• M1: 182,809 km (0.099 R)
• M2: 737,069 km (0.081 R)
• M3: 1,370,316 km (0.081 R)
• M4: 1,989,801 km (0.064 R)
• M5: 2,462,381 km (0.026 R)
• M6: 3,170,577 km (0.113 R)
• M7: 3,670,683 km (0.072 R)
• M8: 4,174,229 km (0.108 R)
• M9: 5,111,011 km (0.1 R)
• M10: 6,446,771 km (0.061 R)
• M11: 8,055,845 km (0.1 R)
• M12: 10,159,939 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.2

Radius: 10.4

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 1.18 AU - 1.92 AU

Year: 1227 Days

Day: 11.6 Hours

Environment

Temp: -176 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 25,731,001 km

• M1: 129,402 km (0.096 R)
• M2: 860,487 km (0.098 R)
• M3: 1,278,015 km (0.093 R)
• M4: 2,094,969 km (0.102 R)
• M5: 3,075,882 km (0.112 R)
• M6: 3,998,452 km (0.1 R)
• M7: 4,386,509 km (0.092 R)
• M8: 5,024,992 km (0.1 R)
• M9: 5,879,496 km (0.094 R)
• M10: 7,025,116 km (0.112 R)
• M11: 7,662,553 km (0.086 R)
• M12: 8,264,086 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 706.5

Radius: 12.1

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 1.98 AU - 2.88 AU

Year: 2408 Days

Day: 12.5 Hours

Environment

Temp: -192 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 25,731,001 km

• M1: 151,393 km (0.119 R)
• M2: 558,748 km (0.111 R)
• M3: 1,084,884 km (0.102 R)
• M4: 1,518,418 km (0.107 R)
• M5: 2,338,364 km (0.071 R)
• M6: 2,720,288 km (0.12 R)
• M7: 3,244,479 km (0.099 R)
• M8: 4,008,774 km (0.11 R)
• M9: 4,539,847 km (0.044 R)
• M10: 5,972,097 km (0.057 R)
• M11: 6,639,154 km (0.073 R)
• M12: 8,122,117 km (0.038 R)
• M13: 8,640,474 km (0.06 R)
• M14: 9,815,565 km (0.058 R)
• M15: 11,410,727 km (0.088 R)
• M16: 12,608,857 km (0.114 R)
• M17: 13,980,370 km (0.109 R)
• M18: 15,596,625 km (0.102 R)
• M19: 16,862,074 km (0.11 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 131.3

Radius: 12.1

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 3.02 AU - 3.92 AU

Year: 4110 Days

Day: 12.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 25,731,001 km

• M1: 150,944 km (0.052 R)
• M2: 660,175 km (0.109 R)
• M3: 1,104,182 km (0.091 R)
• M4: 1,501,514 km (0.092 R)
• M5: 2,075,521 km (0.036 R)
• M6: 2,453,854 km (0.118 R)
• M7: 3,500,141 km (0.054 R)
• M8: 4,097,336 km (0.048 R)
• M9: 5,679,633 km (0.11 R)
• M10: 6,305,101 km (0.113 R)
• M11: 6,738,486 km (0.093 R)
• M12: 10,353,818 km (0.105 R)
• M13: 10,742,623 km (0.08 R)
• M14: 13,956,135 km (0.111 R)
• M15: 14,739,130 km (0.104 R)
• M16: 15,141,399 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 255.7

Radius: 14.4

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 4.91 AU - 6.23 AU

Year: 8358 Days

Day: 12.6 Hours

Environment

Temp: -219 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 25,731,001 km

• M1: 180,565 km (0.077 R)
• M2: 714,180 km (0.082 R)
• M3: 1,943,725 km (0.088 R)
• M4: 2,434,705 km (0.099 R)
• M5: 5,189,251 km (0.071 R)
• M6: 6,180,786 km (0.082 R)
• M7: 6,920,846 km (0.11 R)
• M8: 7,576,235 km (0.095 R)
• M9: 8,085,316 km (0.108 R)
• M10: 8,656,182 km (0.098 R)
• M11: 10,666,328 km (0.114 R)
• M12: 14,023,903 km (0.065 R)
• M13: 15,534,093 km (0.074 R)
• M14: 16,358,527 km (0.115 R)
• M15: 17,026,781 km (0.085 R)
• M16: 17,586,875 km (0.063 R)
• M17: 18,613,117 km (0.113 R)
• M18: 25,064,525 km (0.092 R)
• M19: 27,114,464 km (0.105 R)
• M20: 28,051,097 km (0.111 R)

Planet 9 - Gas Giant

Semi-Major Axis: 6.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 117.2

Radius: 8.9

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 4.98 AU - 7.16 AU

Year: 9509 Days

Day: 6.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 25,731,001 km

• M1: 110,702 km (0.096 R)
• M2: 661,073 km (0.089 R)
• M3: 1,642,136 km (0.089 R)
• M4: 1,995,336 km (0.05 R)
• M5: 3,180,600 km (0.111 R)
• M6: 3,860,523 km (0.114 R)
• M7: 4,167,348 km (0.063 R)
• M8: 5,983,466 km (0.081 R)
• M9: 9,164,665 km (0.11 R)
• M10: 10,619,504 km (0.112 R)
• M11: 12,694,576 km (0.083 R)
• M12: 15,900,309 km (0.075 R)
• M13: 20,519,742 km (0.098 R)
• M14: 22,425,618 km (0.057 R)
• M15: 22,919,890 km (0.115 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 215 - 13,181 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit