🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.88

Radius: 0.95

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 0.49 AU - 0.63 AU

Year: 266 Days

Day: 20.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 56,154,206 km

• M1: 25,581 km (0.057 R)
• M2: 350,358 km (0.09 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.3

Radius: 14.1

Gravity: 0.51 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.64 AU - 0.98 AU

Year: 464 Days

Day: 14.9 Hours

Environment

Temp: -143 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 56,154,206 km

• M1: 176,077 km (0.05 R)
• M2: 623,225 km (0.117 R)
• M3: 1,250,788 km (0.104 R)
• M4: 2,284,808 km (0.117 R)
• M5: 3,088,747 km (0.039 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 879.3

Radius: 15

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.45 AU - 2.03 AU

Year: 1459 Days

Day: 9 Hours

Environment

Temp: -194 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,154,206 km

• M1: 186,698 km (0.105 R)
• M2: 653,593 km (0.113 R)
• M3: 1,234,930 km (0.081 R)
• M4: 1,873,713 km (0.078 R)
• M5: 2,381,299 km (0.116 R)
• M6: 3,453,616 km (0.047 R)
• M7: 5,287,836 km (0.064 R)
• M8: 7,429,479 km (0.112 R)
• M9: 8,424,903 km (0.092 R)
• M10: 9,379,338 km (0.083 R)
• M11: 11,357,770 km (0.095 R)
• M12: 11,911,880 km (0.087 R)
• M13: 12,994,819 km (0.044 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 662.2

Radius: 9

Gravity: 8.18 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.92 AU - 2.62 AU

Year: 2175 Days

Day: 14.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 56,154,206 km

• M1: 112,049 km (0.108 R)
• M2: 506,090 km (0.039 R)
• M3: 811,120 km (0.105 R)
• M4: 1,121,984 km (0.113 R)
• M5: 1,715,738 km (0.091 R)
• M6: 2,383,842 km (0.047 R)
• M7: 3,591,097 km (0.091 R)
• M8: 4,512,919 km (0.098 R)
• M9: 5,778,667 km (0.119 R)
• M10: 6,078,161 km (0.078 R)
• M11: 6,681,340 km (0.09 R)
• M12: 7,095,876 km (0.096 R)
• M13: 7,410,630 km (0.101 R)
• M14: 7,794,797 km (0.093 R)
• M15: 8,443,304 km (0.12 R)
• M16: 10,979,736 km (0.095 R)
• M17: 11,874,181 km (0.118 R)
• M18: 13,155,637 km (0.081 R)
• M19: 13,807,584 km (0.097 R)
• M20: 14,710,407 km (0.047 R)
• M21: 15,603,956 km (0.099 R)
• M22: 16,533,108 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 957.1

Radius: 8

Gravity: 14.95 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 2.28 AU - 3.5 AU

Year: 3124 Days

Day: 9.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 56,154,206 km

• M1: 99,931 km (0.095 R)
• M2: 692,638 km (0.095 R)
• M3: 974,481 km (0.091 R)
• M4: 1,226,852 km (0.112 R)
• M5: 1,501,663 km (0.067 R)
• M6: 1,999,076 km (0.067 R)
• M7: 2,398,802 km (0.112 R)
• M8: 2,990,162 km (0.052 R)
• M9: 3,554,296 km (0.075 R)
• M10: 3,925,747 km (0.109 R)
• M11: 5,145,868 km (0.114 R)
• M12: 5,621,888 km (0.098 R)
• M13: 6,480,430 km (0.042 R)
• M14: 6,816,128 km (0.118 R)
• M15: 7,325,359 km (0.059 R)
• M16: 8,782,741 km (0.056 R)
• M17: 12,122,065 km (0.054 R)
• M18: 13,796,364 km (0.08 R)
• M19: 15,403,046 km (0.042 R)
• M20: 15,837,179 km (0.09 R)
• M21: 20,703,747 km (0.104 R)
• M22: 23,796,384 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986.7

Radius: 13.8

Gravity: 5.18 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 2.33 AU - 3.47 AU

Year: 3140 Days

Day: 13.7 Hours

Environment

Temp: -194 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 56,154,206 km

• M1: 171,589 km (0.089 R)
• M2: 618,288 km (0.086 R)
• M3: 1,113,756 km (0.055 R)
• M4: 1,761,216 km (0.112 R)
• M5: 2,215,993 km (0.116 R)
• M6: 2,816,629 km (0.028 R)
• M7: 5,118,491 km (0.095 R)
• M8: 6,062,304 km (0.048 R)
• M9: 7,247,418 km (0.076 R)
• M10: 7,844,015 km (0.117 R)
• M11: 9,136,241 km (0.12 R)
• M12: 10,818,170 km (0.077 R)
• M13: 14,016,722 km (0.105 R)
• M14: 15,804,417 km (0.114 R)
• M15: 17,917,935 km (0.084 R)
• M16: 19,135,812 km (0.113 R)
• M17: 24,859,576 km (0.058 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 339.8

Radius: 8

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 8.06 AU - 10.52 AU

Year: 18003 Days

Day: 22.6 Hours

Environment

Temp: -238 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 56,154,206 km

• M1: 111,002 km (0.115 R)
• M2: 370,105 km (0.11 R)
• M3: 1,107,623 km (0.078 R)
• M4: 2,113,968 km (0.064 R)
• M5: 2,870,334 km (0.109 R)
• M6: 5,105,925 km (0.055 R)
• M7: 8,539,645 km (0.066 R)
• M8: 8,975,274 km (0.08 R)
• M9: 19,993,007 km (0.049 R)
• M10: 21,905,766 km (0.098 R)
• M11: 22,175,640 km (0.056 R)
• M12: 26,802,852 km (0.115 R)
• M13: 36,631,133 km (0.04 R)
• M14: 37,780,643 km (0.085 R)
• M15: 41,648,197 km (0.114 R)
• M16: 55,818,556 km (0.059 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 192 - 18,103 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit