🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.08

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.47 AU - 0.69 AU

Year: 285 Days

Day: 27.6 Hours

Environment

Temp: -134 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 199.8

Radius: 8.5

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.8 AU - 0.84 AU

Year: 479 Days

Day: 8.1 Hours

Environment

Temp: -158 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 55,305,462 km

• M1: 105,766 km (0.075 R)
• M2: 535,710 km (0.103 R)
• M3: 875,148 km (0.08 R)
• M4: 1,352,365 km (0.087 R)
• M5: 2,137,305 km (0.081 R)
• M6: 2,864,201 km (0.065 R)
• M7: 3,556,989 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842.9

Radius: 10.5

Gravity: 7.65 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.67 AU - 1.03 AU

Year: 506 Days

Day: 8.6 Hours

Environment

Temp: -158 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 55,305,462 km

• M1: 130,898 km (0.109 R)
• M2: 477,068 km (0.071 R)
• M3: 832,961 km (0.039 R)
• M4: 1,174,792 km (0.117 R)
• M5: 1,518,269 km (0.041 R)
• M6: 2,337,467 km (0.117 R)
• M7: 2,802,267 km (0.109 R)
• M8: 3,453,766 km (0.11 R)
• M9: 3,891,340 km (0.119 R)
• M10: 4,247,233 km (0.056 R)
• M11: 4,687,500 km (0.098 R)
• M12: 5,157,985 km (0.107 R)
• M13: 5,822,050 km (0.091 R)
• M14: 6,212,800 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 10.9

Radius: 11.9

Gravity: 0.08 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.89 AU - 0.91 AU

Year: 551 Days

Day: 7.7 Hours

Environment

Temp: -163 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 55,305,462 km

• M1: 147,952 km (0.081 R)
• M2: 565,031 km (0.086 R)
• M3: 1,038,957 km (0.119 R)
• M4: 1,611,319 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 662.8

Radius: 8.8

Gravity: 8.56 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 1.22 AU - 1.74 AU

Year: 1163 Days

Day: 14.9 Hours

Environment

Temp: -181 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 55,305,462 km

• M1: 125,213 km (0.081 R)
• M2: 479,312 km (0.089 R)
• M3: 809,175 km (0.119 R)
• M4: 1,369,569 km (0.111 R)
• M5: 1,654,852 km (0.094 R)
• M6: 2,147,926 km (0.094 R)
• M7: 2,710,713 km (0.044 R)
• M8: 3,068,701 km (0.085 R)
• M9: 3,847,508 km (0.115 R)
• M10: 4,442,159 km (0.112 R)
• M11: 4,808,524 km (0.108 R)
• M12: 5,878,448 km (0.082 R)
• M13: 8,289,368 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 95.7

Radius: 10.4

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.74 AU - 2.12 AU

Year: 1731 Days

Day: 10 Hours

Environment

Temp: -181 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,305,462 km

• M1: 129,402 km (0.084 R)
• M2: 579,991 km (0.05 R)
• M3: 1,279,511 km (0.066 R)
• M4: 1,681,630 km (0.093 R)
• M5: 2,517,882 km (0.12 R)
• M6: 3,084,409 km (0.087 R)
• M7: 4,047,969 km (0.106 R)
• M8: 4,615,693 km (0.101 R)
• M9: 5,520,760 km (0.098 R)
• M10: 6,102,696 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 755.4

Radius: 10.3

Gravity: 7.12 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 3.03 AU - 4.67 AU

Year: 4878 Days

Day: 7.8 Hours

Environment

Temp: -206 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 55,305,462 km

• M1: 128,205 km (0.118 R)
• M2: 504,743 km (0.062 R)
• M3: 881,131 km (0.118 R)
• M4: 1,765,404 km (0.093 R)
• M5: 2,312,185 km (0.113 R)
• M6: 2,931,221 km (0.118 R)
• M7: 3,300,727 km (0.058 R)
• M8: 3,856,783 km (0.099 R)
• M9: 4,205,495 km (0.111 R)
• M10: 5,295,765 km (0.099 R)
• M11: 7,660,309 km (0.111 R)
• M12: 8,993,375 km (0.074 R)
• M13: 11,724,733 km (0.114 R)
• M14: 12,712,528 km (0.113 R)
• M15: 14,187,563 km (0.088 R)
• M16: 16,068,606 km (0.086 R)
• M17: 18,827,939 km (0.038 R)
• M18: 20,529,017 km (0.109 R)
• M19: 22,330,325 km (0.085 R)
• M20: 23,460,237 km (0.11 R)
• M21: 28,712,768 km (0.067 R)
• M22: 29,867,813 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 967.3

Radius: 6.4

Gravity: 23.62 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 6.09 AU - 6.69 AU

Year: 10430 Days

Day: 17.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 55,305,462 km

• M1: 80,035 km (0.119 R)
• M2: 446,550 km (0.117 R)
• M3: 824,135 km (0.069 R)
• M4: 1,385,127 km (0.097 R)
• M5: 1,838,857 km (0.102 R)
• M6: 2,193,254 km (0.074 R)
• M7: 2,831,888 km (0.111 R)
• M8: 3,941,754 km (0.106 R)
• M9: 4,171,237 km (0.05 R)
• M10: 4,946,154 km (0.062 R)
• M11: 6,497,634 km (0.11 R)
• M12: 7,192,067 km (0.054 R)
• M13: 7,889,642 km (0.119 R)
• M14: 8,441,808 km (0.119 R)
• M15: 8,727,390 km (0.039 R)
• M16: 9,217,772 km (0.114 R)
• M17: 9,778,166 km (0.107 R)
• M18: 11,306,906 km (0.12 R)
• M19: 14,020,612 km (0.092 R)
• M20: 15,884,751 km (0.089 R)
• M21: 21,387,260 km (0.101 R)
• M22: 23,941,643 km (0.099 R)
• M23: 26,086,129 km (0.099 R)
• M24: 26,489,295 km (0.059 R)
• M25: 28,781,434 km (0.065 R)
• M26: 30,196,330 km (0.076 R)
• M27: 32,346,800 km (0.067 R)
• M28: 34,476,176 km (0.117 R)
• M29: 35,946,723 km (0.072 R)
• M30: 37,714,521 km (0.095 R)
• M31: 37,971,680 km (0.088 R)
• M32: 38,489,587 km (0.119 R)
• M33: 42,663,966 km (0.114 R)
• M34: 45,511,562 km (0.088 R)
• M35: 52,057,665 km (0.104 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: 444 - 19,381 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit