🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.51 AU - 0.59 AU

Year: 268 Days

Day: 15.3 Hours

Environment

Temp: -127 °C

Axial Tilt: 33.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 5

Radius: 1.9

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.46 AU - 0.68 AU

Year: 282 Days

Day: 29.1 Hours

Environment

Temp: -125 °C

Axial Tilt: 9.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 86,070,527 km

• M1: 45,478 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 347.4

Radius: 9.6

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.87 AU - 1.05 AU

Year: 617 Days

Day: 13.1 Hours

Environment

Temp: -166 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 86,070,527 km

• M1: 125,961 km (0.108 R)
• M2: 594,203 km (0.05 R)
• M3: 1,055,862 km (0.098 R)
• M4: 1,421,180 km (0.031 R)
• M5: 1,778,270 km (0.067 R)
• M6: 2,134,313 km (0.098 R)
• M7: 2,905,939 km (0.077 R)
• M8: 4,270,870 km (0.051 R)
• M9: 4,885,418 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 208

Radius: 11.8

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.58 AU - 1.64 AU

Year: 1340 Days

Day: 5.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 86,070,527 km

• M1: 148,850 km (0.039 R)
• M2: 774,169 km (0.064 R)
• M3: 1,164,470 km (0.119 R)
• M4: 1,722,769 km (0.109 R)
• M5: 2,299,618 km (0.066 R)
• M6: 2,799,724 km (0.04 R)
• M7: 3,319,128 km (0.061 R)
• M8: 4,328,016 km (0.113 R)
• M9: 5,971,498 km (0.081 R)
• M10: 7,390,135 km (0.052 R)
• M11: 7,973,417 km (0.037 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 301.4

Radius: 14.2

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.95 AU - 3.05 AU

Year: 2593 Days

Day: 6.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 47.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 86,070,527 km

• M1: 176,525 km (0.088 R)
• M2: 815,458 km (0.042 R)
• M3: 1,953,299 km (0.106 R)
• M4: 2,508,906 km (0.113 R)
• M5: 2,961,439 km (0.106 R)
• M6: 3,787,369 km (0.109 R)
• M7: 4,523,391 km (0.113 R)
• M8: 5,009,733 km (0.062 R)
• M9: 7,154,817 km (0.036 R)
• M10: 7,704,739 km (0.111 R)
• M11: 8,858,887 km (0.117 R)
• M12: 10,091,274 km (0.086 R)
• M13: 11,106,445 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488

Radius: 10.4

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 2.72 AU - 3.64 AU

Year: 3720 Days

Day: 8.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 86,070,527 km

• M1: 129,402 km (0.037 R)
• M2: 461,061 km (0.106 R)
• M3: 785,090 km (0.051 R)
• M4: 1,199,775 km (0.088 R)
• M5: 1,559,408 km (0.09 R)
• M6: 2,175,751 km (0.057 R)
• M7: 3,066,756 km (0.087 R)
• M8: 3,872,341 km (0.114 R)
• M9: 5,712,843 km (0.092 R)
• M10: 6,372,420 km (0.104 R)
• M11: 7,487,673 km (0.114 R)
• M12: 7,843,117 km (0.078 R)
• M13: 11,190,519 km (0.066 R)
• M14: 13,600,990 km (0.054 R)
• M15: 16,231,070 km (0.108 R)
• M16: 17,950,996 km (0.118 R)
• M17: 20,470,524 km (0.075 R)
• M18: 20,848,707 km (0.119 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 241.2

Radius: 8

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 4.13 AU - 6.13 AU

Year: 7622 Days

Day: 13.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 86,070,527 km

• M1: 99,782 km (0.098 R)
• M2: 723,904 km (0.1 R)
• M3: 1,129,464 km (0.09 R)
• M4: 1,412,653 km (0.097 R)
• M5: 1,693,149 km (0.03 R)
• M6: 2,067,742 km (0.11 R)
• M7: 2,929,276 km (0.113 R)
• M8: 3,533,801 km (0.109 R)
• M9: 5,068,525 km (0.098 R)
• M10: 5,394,350 km (0.08 R)
• M11: 5,850,324 km (0.07 R)
• M12: 6,270,245 km (0.082 R)
• M13: 6,646,035 km (0.047 R)
• M14: 7,271,653 km (0.043 R)
• M15: 7,972,071 km (0.119 R)
• M16: 8,832,258 km (0.105 R)
• M17: 10,958,194 km (0.093 R)
• M18: 12,211,824 km (0.119 R)
• M19: 14,240,820 km (0.041 R)
• M20: 15,674,117 km (0.082 R)
• M21: 24,229,470 km (0.059 R)
• M22: 25,785,886 km (0.103 R)
• M23: 26,104,828 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 754.4

Radius: 4.7

Gravity: 34.15 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 10.62 AU - 10.76 AU

Year: 22929 Days

Day: 20 Hours

Environment

Temp: -227 °C

Axial Tilt: 86 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 86,070,527 km

• M1: 58,493 km (0.1 R)
• M2: 315,352 km (0.119 R)
• M3: 799,451 km (0.107 R)
• M4: 1,232,686 km (0.067 R)
• M5: 1,587,682 km (0.045 R)
• M6: 2,028,697 km (0.107 R)
• M7: 3,469,025 km (0.103 R)
• M8: 4,558,098 km (0.035 R)
• M9: 5,279,309 km (0.088 R)
• M10: 5,688,010 km (0.113 R)
• M11: 6,992,952 km (0.069 R)
• M12: 7,689,181 km (0.109 R)
• M13: 8,706,446 km (0.119 R)
• M14: 9,750,191 km (0.106 R)
• M15: 9,992,988 km (0.03 R)
• M16: 10,745,615 km (0.104 R)
• M17: 12,433,677 km (0.073 R)
• M18: 12,791,366 km (0.103 R)
• M19: 14,058,759 km (0.106 R)
• M20: 16,753,765 km (0.102 R)
• M21: 17,903,724 km (0.059 R)
• M22: 18,451,850 km (0.091 R)
• M23: 18,917,100 km (0.117 R)
• M24: 22,711,799 km (0.068 R)
• M25: 24,008,065 km (0.112 R)
• M26: 25,352,800 km (0.115 R)
• M27: 38,565,882 km (0.053 R)
• M28: 38,868,668 km (0.053 R)
• M29: 40,095,670 km (0.066 R)
• M30: 42,950,745 km (0.097 R)
• M31: 50,674,932 km (0.083 R)
• M32: 51,586,283 km (0.098 R)
• M33: 52,694,354 km (0.046 R)
• M34: 52,880,603 km (0.095 R)
• M35: 56,697,593 km (0.06 R)
• M36: 58,473,619 km (0.058 R)
• M37: 61,103,998 km (0.085 R)
• M38: 66,816,842 km (0.113 R)
• M39: 70,364,705 km (0.04 R)
• M40: 76,633,005 km (0.035 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 191 - 10,316 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit