🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.33

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.69 AU - 0.87 AU

Year: 257 Days

Day: 32.3 Hours

Environment

Temp: 94 °C

Axial Tilt: 23 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 21,852,579 km

• M1: 40,691 km (0.07 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.05 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.7

Radius: 1.49

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.05 AU - 1.05 AU

Year: 401 Days

Day: 33.1 Hours

Environment

Temp: 12 °C

Axial Tilt: 31.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 21,852,579 km

• M1: 403,017 km (0.105 R)
• M2: 654,042 km (0.118 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.2

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.47 AU - 1.55 AU

Year: 692 Days

Day: 42.8 Hours

Environment

Temp: -50 °C

Axial Tilt: 19.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.09

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 1.7 AU - 2.28 AU

Year: 1046 Days

Day: 27.6 Hours

Environment

Temp: -77 °C

Axial Tilt: 39 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 21,852,579 km

• M1: 474,076 km (0.032 R)
• M2: 760,107 km (0.039 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.35

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 2.32 AU - 2.78 AU

Year: 1518 Days

Day: 31.3 Hours

Environment

Temp: -87 °C

Axial Tilt: 24.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 9.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 673.7

Radius: 8.5

Gravity: 9.32 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 7.74 AU - 12.08 AU

Year: 11630 Days

Day: 5.2 Hours

Environment

Temp: -175 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 21,852,579 km

• M1: 105,915 km (0.092 R)
• M2: 444,306 km (0.113 R)
• M3: 1,141,282 km (0.096 R)
• M4: 1,878,500 km (0.082 R)
• M5: 2,380,701 km (0.051 R)
• M6: 3,084,558 km (0.078 R)
• M7: 3,472,765 km (0.081 R)
• M8: 4,087,612 km (0.105 R)
• M9: 4,436,175 km (0.042 R)
• M10: 4,773,070 km (0.097 R)
• M11: 6,447,967 km (0.032 R)
• M12: 8,389,748 km (0.091 R)
• M13: 9,344,781 km (0.102 R)
• M14: 10,003,310 km (0.102 R)
• M15: 10,910,622 km (0.099 R)
• M16: 12,105,908 km (0.114 R)
• M17: 14,157,194 km (0.077 R)
• M18: 15,928,732 km (0.096 R)
• M19: 16,647,849 km (0.097 R)
• M20: 17,238,611 km (0.112 R)
• M21: 23,382,746 km (0.057 R)
• M22: 23,658,754 km (0.113 R)
• M23: 24,594,638 km (0.114 R)
• M24: 27,961,039 km (0.104 R)
• M25: 28,795,645 km (0.104 R)
• M26: 29,862,129 km (0.064 R)
• M27: 33,219,254 km (0.112 R)
• M28: 37,068,856 km (0.113 R)
• M29: 38,330,266 km (0.076 R)
• M30: 40,938,654 km (0.066 R)
• M31: 44,222,028 km (0.112 R)
• M32: 45,354,334 km (0.032 R)
• M33: 45,783,830 km (0.107 R)
• M34: 46,942,765 km (0.098 R)
• M35: 47,676,841 km (0.113 R)
• M36: 52,715,148 km (0.091 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 673.9

Radius: 12.9

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 8.08 AU - 11.8 AU

Year: 11682 Days

Day: 6.9 Hours

Environment

Temp: -182 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 21,852,579 km

• M1: 184,454 km (0.074 R)
• M2: 898,335 km (0.112 R)
• M3: 1,598,154 km (0.088 R)
• M4: 2,363,198 km (0.107 R)
• M5: 3,360,417 km (0.049 R)
• M6: 4,010,719 km (0.064 R)
• M7: 5,461,070 km (0.075 R)
• M8: 6,869,684 km (0.118 R)
• M9: 8,053,601 km (0.112 R)
• M10: 9,923,724 km (0.101 R)
• M11: 17,858,545 km (0.117 R)
• M12: 18,949,712 km (0.038 R)
• M13: 20,923,057 km (0.103 R)
• M14: 24,986,584 km (0.047 R)
• M15: 28,490,166 km (0.036 R)
• M16: 33,693,031 km (0.094 R)
• M17: 38,592,959 km (0.099 R)
• M18: 39,496,680 km (0.115 R)
• M19: 46,367,411 km (0.101 R)
• M20: 51,624,729 km (0.092 R)

Planet 8 - Gas Giant

Semi-Major Axis: 11.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 706.9

Radius: 12.7

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 11.17 AU - 12.55 AU

Year: 15226 Days

Day: 7.4 Hours

Environment

Temp: -185 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 21,852,579 km

• M1: 166,951 km (0.112 R)
• M2: 793,467 km (0.109 R)
• M3: 1,361,490 km (0.071 R)
• M4: 1,799,662 km (0.079 R)
• M5: 3,476,655 km (0.075 R)
• M6: 4,009,971 km (0.116 R)
• M7: 6,423,284 km (0.108 R)
• M8: 8,151,738 km (0.099 R)
• M9: 9,517,865 km (0.117 R)
• M10: 10,227,707 km (0.116 R)
• M11: 11,630,935 km (0.071 R)
• M12: 12,635,335 km (0.105 R)
• M13: 14,673,307 km (0.054 R)
• M14: 15,178,798 km (0.073 R)
• M15: 16,765,284 km (0.109 R)
• M16: 18,459,779 km (0.117 R)
• M17: 19,738,242 km (0.118 R)
• M18: 23,337,567 km (0.117 R)
• M19: 24,628,746 km (0.101 R)
• M20: 27,899,255 km (0.053 R)
• M21: 28,452,617 km (0.111 R)
• M22: 37,926,052 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 115.2

Radius: 4

Gravity: 7.2 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 10.82 AU - 13.78 AU

Year: 16081 Days

Day: 21.7 Hours

Environment

Temp: -192 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 21,852,579 km

• M1: 49,816 km (0.071 R)
• M2: 302,487 km (0.099 R)
• M3: 526,435 km (0.1 R)
• M4: 1,842,447 km (0.081 R)
• M5: 2,087,189 km (0.116 R)
• M6: 2,353,474 km (0.098 R)
• M7: 3,579,727 km (0.114 R)
• M8: 4,290,317 km (0.059 R)
• M9: 9,556,611 km (0.118 R)
• M10: 10,009,294 km (0.111 R)
• M11: 12,015,402 km (0.117 R)
• M12: 16,606,411 km (0.091 R)
• M13: 22,008,689 km (0.081 R)
• M14: 22,796,621 km (0.112 R)
• M15: 25,444,204 km (0.117 R)
• M16: 28,105,850 km (0.044 R)
• M17: 29,598,687 km (0.063 R)
• M18: 30,171,796 km (0.101 R)
• M19: 36,098,565 km (0.102 R)

Planet 10 - Ice Giant

Semi-Major Axis: 12.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 25.1

Radius: 8

Gravity: 0.39 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 10.81 AU - 13.79 AU

Year: 16081 Days

Day: 22.2 Hours

Environment

Temp: -193 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 21,852,579 km

• M1: 99,782 km (0.108 R)
• M2: 722,707 km (0.042 R)
• M3: 1,016,218 km (0.066 R)
• M4: 1,491,640 km (0.081 R)
• M5: 2,203,128 km (0.103 R)
• M6: 2,490,206 km (0.068 R)
• M7: 2,851,335 km (0.064 R)
• M8: 5,775,226 km (0.109 R)
• M9: 6,073,374 km (0.072 R)
• M10: 6,700,788 km (0.114 R)
• M11: 13,177,628 km (0.118 R)
• M12: 13,553,118 km (0.038 R)
• M13: 19,345,249 km (0.111 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 342 - 17,455 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit