🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.11

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.52 AU - 0.68 AU

Year: 296 Days

Day: 13.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 25 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 765.1

Radius: 9

Gravity: 9.45 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.77 AU - 1.23 AU

Year: 636 Days

Day: 5.2 Hours

Environment

Temp: -153 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,538,748 km

• M1: 113,545 km (0.119 R)
• M2: 485,595 km (0.11 R)
• M3: 892,202 km (0.057 R)
• M4: 1,184,965 km (0.105 R)
• M5: 1,589,029 km (0.054 R)
• M6: 2,140,297 km (0.037 R)
• M7: 2,790,898 km (0.051 R)
• M8: 3,137,965 km (0.076 R)
• M9: 3,527,069 km (0.05 R)
• M10: 3,962,848 km (0.101 R)
• M11: 4,610,307 km (0.105 R)
• M12: 4,891,701 km (0.112 R)
• M13: 5,507,595 km (0.111 R)
• M14: 6,557,922 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 716.8

Radius: 11.1

Gravity: 5.82 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 1.15 AU - 1.67 AU

Year: 1065 Days

Day: 5.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 164.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 52,538,748 km

• M1: 138,079 km (0.101 R)
• M2: 511,924 km (0.094 R)
• M3: 1,069,924 km (0.093 R)
• M4: 1,536,221 km (0.096 R)
• M5: 2,309,791 km (0.119 R)
• M6: 2,697,848 km (0.1 R)
• M7: 3,413,225 km (0.054 R)
• M8: 4,099,580 km (0.104 R)
• M9: 4,547,027 km (0.116 R)
• M10: 5,046,086 km (0.029 R)
• M11: 5,439,079 km (0.077 R)
• M12: 5,916,297 km (0.086 R)
• M13: 7,294,093 km (0.089 R)
• M14: 7,875,430 km (0.103 R)
• M15: 8,405,755 km (0.068 R)
• M16: 9,130,856 km (0.09 R)
• M17: 9,538,211 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637

Radius: 11.9

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 2.08 AU - 3.06 AU

Year: 2620 Days

Day: 13.7 Hours

Environment

Temp: -207 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 52,538,748 km

• M1: 148,401 km (0.06 R)
• M2: 526,285 km (0.116 R)
• M3: 969,843 km (0.062 R)
• M4: 1,712,447 km (0.119 R)
• M5: 2,302,910 km (0.111 R)
• M6: 4,232,872 km (0.107 R)
• M7: 5,083,934 km (0.094 R)
• M8: 6,310,786 km (0.119 R)
• M9: 7,124,599 km (0.064 R)
• M10: 8,166,398 km (0.099 R)
• M11: 10,099,951 km (0.071 R)
• M12: 12,237,255 km (0.118 R)
• M13: 14,708,163 km (0.115 R)
• M14: 17,602,284 km (0.049 R)
• M15: 18,701,978 km (0.047 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 543.6

Radius: 13.6

Gravity: 2.94 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 3.71 AU - 3.77 AU

Year: 4599 Days

Day: 13.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 52,538,748 km

• M1: 169,195 km (0.103 R)
• M2: 658,081 km (0.094 R)
• M3: 1,691,802 km (0.079 R)
• M4: 2,759,632 km (0.086 R)
• M5: 4,102,422 km (0.116 R)
• M6: 4,684,508 km (0.082 R)
• M7: 5,242,059 km (0.083 R)
• M8: 5,702,970 km (0.043 R)
• M9: 6,279,819 km (0.093 R)
• M10: 8,836,896 km (0.082 R)
• M11: 11,701,246 km (0.102 R)
• M12: 12,780,296 km (0.033 R)
• M13: 13,269,630 km (0.109 R)
• M14: 16,302,578 km (0.116 R)
• M15: 16,937,022 km (0.052 R)
• M16: 19,002,969 km (0.072 R)
• M17: 25,428,496 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 792.2

Radius: 14

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 3.56 AU - 4.02 AU

Year: 4691 Days

Day: 14.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 52,538,748 km

• M1: 175,030 km (0.06 R)
• M2: 788,680 km (0.107 R)
• M3: 1,392,906 km (0.081 R)
• M4: 2,348,387 km (0.054 R)
• M5: 3,390,636 km (0.103 R)
• M6: 4,204,149 km (0.114 R)
• M7: 4,773,219 km (0.082 R)
• M8: 5,281,702 km (0.068 R)
• M9: 7,131,181 km (0.099 R)
• M10: 7,762,185 km (0.05 R)
• M11: 13,748,942 km (0.117 R)
• M12: 14,952,457 km (0.085 R)
• M13: 15,637,914 km (0.093 R)
• M14: 17,884,276 km (0.101 R)
• M15: 19,789,704 km (0.116 R)
• M16: 22,412,903 km (0.064 R)
• M17: 23,692,563 km (0.063 R)
• M18: 28,427,036 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 968.8

Radius: 10.4

Gravity: 8.96 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 4.51 AU - 5.21 AU

Year: 6812 Days

Day: 12.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 48.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 52,538,748 km

• M1: 129,402 km (0.102 R)
• M2: 530,624 km (0.041 R)
• M3: 1,011,880 km (0.1 R)
• M4: 1,354,459 km (0.104 R)
• M5: 1,879,398 km (0.069 R)
• M6: 2,867,492 km (0.074 R)
• M7: 3,863,215 km (0.092 R)
• M8: 6,668,175 km (0.078 R)
• M9: 7,305,462 km (0.041 R)
• M10: 8,106,559 km (0.067 R)
• M11: 9,234,228 km (0.04 R)
• M12: 9,741,664 km (0.045 R)
• M13: 10,512,841 km (0.088 R)
• M14: 11,376,320 km (0.117 R)
• M15: 14,556,770 km (0.092 R)
• M16: 17,162,317 km (0.118 R)
• M17: 20,994,565 km (0.065 R)
• M18: 24,654,327 km (0.092 R)
• M19: 32,254,946 km (0.096 R)
• M20: 36,071,188 km (0.072 R)
• M21: 37,330,204 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 631.4

Radius: 6

Gravity: 17.54 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 6.29 AU - 7.85 AU

Year: 11953 Days

Day: 22.4 Hours

Environment

Temp: -218 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 52,538,748 km

• M1: 76,893 km (0.119 R)
• M2: 277,654 km (0.098 R)
• M3: 712,983 km (0.109 R)
• M4: 986,149 km (0.088 R)
• M5: 1,380,788 km (0.105 R)
• M6: 2,064,750 km (0.103 R)
• M7: 2,625,742 km (0.114 R)
• M8: 2,841,312 km (0.057 R)
• M9: 3,186,734 km (0.086 R)
• M10: 4,513,368 km (0.118 R)
• M11: 5,626,526 km (0.074 R)
• M12: 9,688,706 km (0.051 R)
• M13: 10,363,991 km (0.084 R)
• M14: 11,924,446 km (0.088 R)
• M15: 13,827,780 km (0.054 R)
• M16: 17,160,073 km (0.043 R)
• M17: 19,984,929 km (0.097 R)
• M18: 29,748,883 km (0.107 R)
• M19: 30,181,520 km (0.061 R)
• M20: 35,463,073 km (0.084 R)
• M21: 47,661,582 km (0.088 R)
• M22: 50,366,013 km (0.12 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 223 - 16,739 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit