🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.09

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.58 AU - 0.64 AU

Year: 313 Days

Day: 37 Hours

Environment

Temp: -135 °C

Axial Tilt: 31.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.97

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.51 AU - 0.71 AU

Year: 313 Days

Day: 19.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 8.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 478.1

Radius: 10.3

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.61 AU - 1.01 AU

Year: 478 Days

Day: 7.7 Hours

Environment

Temp: -143 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 38,564,872 km

• M1: 128,056 km (0.065 R)
• M2: 524,939 km (0.114 R)
• M3: 854,204 km (0.078 R)
• M4: 1,185,114 km (0.117 R)
• M5: 1,576,462 km (0.041 R)
• M6: 1,941,930 km (0.092 R)
• M7: 2,578,768 km (0.109 R)
• M8: 2,909,679 km (0.106 R)
• M9: 3,430,728 km (0.086 R)
• M10: 4,502,597 km (0.116 R)
• M11: 4,986,097 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 534

Radius: 8.8

Gravity: 6.9 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.84 AU - 1.24 AU

Year: 696 Days

Day: 11.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,564,872 km

• M1: 109,655 km (0.103 R)
• M2: 416,630 km (0.074 R)
• M3: 698,173 km (0.081 R)
• M4: 1,574,069 km (0.054 R)
• M5: 1,930,561 km (0.109 R)
• M6: 2,452,208 km (0.066 R)
• M7: 2,819,770 km (0.111 R)
• M8: 3,762,386 km (0.035 R)
• M9: 4,119,327 km (0.102 R)
• M10: 4,530,272 km (0.118 R)
• M11: 4,968,295 km (0.104 R)
• M12: 5,523,602 km (0.105 R)
• M13: 6,295,078 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 588

Radius: 10

Gravity: 5.88 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.45 AU - 2.21 AU

Year: 1624 Days

Day: 5.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 38,564,872 km

• M1: 124,316 km (0.063 R)
• M2: 498,161 km (0.112 R)
• M3: 810,372 km (0.117 R)
• M4: 1,148,463 km (0.034 R)
• M5: 1,501,514 km (0.096 R)
• M6: 2,113,220 km (0.052 R)
• M7: 2,745,719 km (0.109 R)
• M8: 3,219,197 km (0.084 R)
• M9: 3,831,052 km (0.086 R)
• M10: 5,055,959 km (0.092 R)
• M11: 5,792,430 km (0.118 R)
• M12: 6,451,259 km (0.082 R)
• M13: 7,106,946 km (0.086 R)
• M14: 7,613,784 km (0.081 R)
• M15: 8,230,576 km (0.106 R)
• M16: 8,551,313 km (0.106 R)
• M17: 9,886,175 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 30.3

Radius: 12.8

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 1.94 AU - 2.34 AU

Year: 2054 Days

Day: 13.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 38,564,872 km

• M1: 159,172 km (0.082 R)
• M2: 822,339 km (0.052 R)
• M3: 2,170,964 km (0.115 R)
• M4: 2,729,712 km (0.108 R)
• M5: 5,815,019 km (0.04 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919

Radius: 13.3

Gravity: 5.2 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.9 AU - 3.14 AU

Year: 2624 Days

Day: 5.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 38,564,872 km

• M1: 166,353 km (0.099 R)
• M2: 799,900 km (0.041 R)
• M3: 1,604,587 km (0.116 R)
• M4: 2,022,264 km (0.114 R)
• M5: 2,528,802 km (0.117 R)
• M6: 3,017,987 km (0.106 R)
• M7: 3,762,686 km (0.089 R)
• M8: 4,339,385 km (0.047 R)
• M9: 5,046,385 km (0.116 R)
• M10: 5,466,007 km (0.105 R)
• M11: 6,347,737 km (0.097 R)
• M12: 6,778,878 km (0.101 R)
• M13: 7,668,536 km (0.065 R)
• M14: 8,599,783 km (0.064 R)
• M15: 9,605,230 km (0.12 R)
• M16: 11,341,463 km (0.074 R)
• M17: 11,935,517 km (0.091 R)
• M18: 12,461,203 km (0.103 R)
• M19: 13,371,656 km (0.119 R)
• M20: 15,427,580 km (0.081 R)
• M21: 17,518,210 km (0.11 R)
• M22: 18,660,689 km (0.089 R)
• M23: 19,791,649 km (0.106 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 44.5

Radius: 12

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 2.18 AU - 3.2 AU

Year: 2894 Days

Day: 12.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 38,564,872 km

• M1: 149,448 km (0.065 R)
• M2: 971,189 km (0.109 R)
• M3: 1,504,655 km (0.032 R)
• M4: 2,151,816 km (0.075 R)
• M5: 3,279,185 km (0.114 R)
• M6: 4,518,005 km (0.118 R)
• M7: 4,936,131 km (0.096 R)
• M8: 5,640,588 km (0.071 R)
• M9: 6,349,083 km (0.117 R)
• M10: 6,767,957 km (0.045 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 258.2

Radius: 3.1

Gravity: 26.87 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 5.77 AU - 8.27 AU

Year: 12202 Days

Day: 21 Hours

Environment

Temp: -234 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 38,564,872 km

• M1: 43,533 km (0.099 R)
• M2: 239,506 km (0.075 R)
• M3: 399,127 km (0.092 R)
• M4: 962,513 km (0.086 R)
• M5: 2,275,084 km (0.11 R)
• M6: 2,841,312 km (0.078 R)
• M7: 6,362,248 km (0.084 R)
• M8: 6,937,900 km (0.057 R)
• M9: 7,391,930 km (0.093 R)
• M10: 13,070,516 km (0.038 R)
• M11: 13,644,523 km (0.094 R)
• M12: 17,860,789 km (0.082 R)
• M13: 18,566,891 km (0.059 R)
• M14: 20,643,010 km (0.045 R)
• M15: 25,249,278 km (0.073 R)
• M16: 29,315,199 km (0.063 R)
• M17: 31,808,995 km (0.103 R)
• M18: 35,975,894 km (0.079 R)
• M19: 37,100,122 km (0.096 R)
• M20: 37,900,770 km (0.088 R)
• M21: 38,947,058 km (0.113 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 153.7

Radius: 4.2

Gravity: 8.71 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 7.54 AU - 8.74 AU

Year: 15235 Days

Day: 23.1 Hours

Environment

Temp: -222 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 38,564,872 km

• M1: 52,808 km (0.058 R)
• M2: 248,183 km (0.087 R)
• M3: 744,848 km (0.106 R)
• M4: 1,092,064 km (0.103 R)
• M5: 1,290,730 km (0.112 R)
• M6: 1,448,855 km (0.089 R)
• M7: 2,215,993 km (0.117 R)
• M8: 2,354,371 km (0.113 R)
• M9: 2,967,124 km (0.094 R)
• M10: 4,153,734 km (0.118 R)
• M11: 6,286,551 km (0.059 R)
• M12: 7,921,806 km (0.078 R)
• M13: 8,164,753 km (0.083 R)
• M14: 8,750,877 km (0.065 R)
• M15: 9,545,242 km (0.116 R)
• M16: 16,561,083 km (0.089 R)
• M17: 17,566,081 km (0.063 R)
• M18: 19,112,624 km (0.111 R)
• M19: 26,208,201 km (0.114 R)
• M20: 28,978,604 km (0.111 R)
• M21: 31,938,248 km (0.112 R)
• M22: 35,968,115 km (0.058 R)
• M23: 36,300,073 km (0.117 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: 166 - 17,779 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit