🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.5 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.32

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.85 AU - 1.16 AU

Year: 375 Days

Day: 17.4 Hours

Environment

Temp: 15 °C

Axial Tilt: 3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.93 AU - 1.19 AU

Year: 409 Days

Day: 24.4 Hours

Environment

Temp: 15 °C

Axial Tilt: 27.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.41

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 1.51 AU - 1.83 AU

Year: 809 Days

Day: 15.6 Hours

Environment

Temp: -48 °C

Axial Tilt: 10.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,065,654 km

• M1: 360,980 km (0.111 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.52

Radius: 0.77

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.47 AU - 2.45 AU

Year: 1028 Days

Day: 37.9 Hours

Environment

Temp: -65 °C

Axial Tilt: 31.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,065,654 km

• M1: 26,778 km (0.08 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.35

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 2.65 AU - 4.15 AU

Year: 2349 Days

Day: 37.5 Hours

Environment

Temp: -118 °C

Axial Tilt: 36.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 4.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 954

Radius: 9.9

Gravity: 9.73 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 3.48 AU - 5.72 AU

Year: 3697 Days

Day: 10.4 Hours

Environment

Temp: -133 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 66,065,654 km

• M1: 123,269 km (0.12 R)
• M2: 645,664 km (0.119 R)
• M3: 1,714,242 km (0.105 R)
• M4: 2,200,734 km (0.112 R)
• M5: 2,558,423 km (0.063 R)
• M6: 2,936,905 km (0.111 R)
• M7: 4,072,652 km (0.077 R)
• M8: 4,421,664 km (0.095 R)
• M9: 6,082,201 km (0.102 R)
• M10: 9,023,744 km (0.111 R)
• M11: 9,418,084 km (0.115 R)
• M12: 10,326,442 km (0.105 R)
• M13: 15,203,183 km (0.052 R)
• M14: 15,762,380 km (0.046 R)
• M15: 17,040,843 km (0.079 R)
• M16: 17,828,027 km (0.097 R)
• M17: 19,737,045 km (0.064 R)
• M18: 22,061,048 km (0.111 R)
• M19: 22,777,921 km (0.027 R)
• M20: 24,107,398 km (0.057 R)
• M21: 24,944,847 km (0.096 R)
• M22: 26,117,993 km (0.109 R)
• M23: 26,597,305 km (0.119 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377.8

Radius: 9.4

Gravity: 4.28 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 6.89 AU - 7.05 AU

Year: 6896 Days

Day: 5.8 Hours

Environment

Temp: -161 °C

Axial Tilt: 2.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 66,065,654 km

• M1: 118,930 km (0.107 R)
• M2: 544,686 km (0.088 R)
• M3: 885,769 km (0.1 R)
• M4: 1,902,137 km (0.096 R)
• M5: 2,920,749 km (0.066 R)
• M6: 3,454,963 km (0.068 R)
• M7: 4,219,258 km (0.08 R)
• M8: 4,797,305 km (0.056 R)
• M9: 6,298,968 km (0.078 R)
• M10: 8,017,099 km (0.082 R)
• M11: 10,114,013 km (0.062 R)
• M12: 11,056,330 km (0.079 R)
• M13: 14,070,577 km (0.049 R)
• M14: 16,420,311 km (0.106 R)
• M15: 17,217,069 km (0.078 R)
• M16: 19,967,426 km (0.089 R)
• M17: 24,228,871 km (0.084 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 737.3

Radius: 13.5

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 6.17 AU - 8.65 AU

Year: 7559 Days

Day: 7.6 Hours

Environment

Temp: -157 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 66,065,654 km

• M1: 167,998 km (0.103 R)
• M2: 636,539 km (0.086 R)
• M3: 1,078,301 km (0.112 R)
• M4: 1,968,708 km (0.114 R)
• M5: 2,484,521 km (0.117 R)
• M6: 3,463,490 km (0.089 R)
• M7: 4,042,284 km (0.109 R)
• M8: 5,242,209 km (0.089 R)
• M9: 6,811,789 km (0.112 R)
• M10: 8,632,844 km (0.056 R)
• M11: 9,157,185 km (0.099 R)
• M12: 11,264,720 km (0.098 R)
• M13: 13,044,934 km (0.115 R)
• M14: 14,452,800 km (0.059 R)
• M15: 17,020,947 km (0.12 R)
• M16: 17,917,487 km (0.097 R)
• M17: 20,030,706 km (0.09 R)
• M18: 21,741,208 km (0.11 R)
• M19: 26,807,190 km (0.09 R)
• M20: 27,549,645 km (0.046 R)
• M21: 32,505,074 km (0.096 R)
• M22: 34,425,612 km (0.073 R)
• M23: 35,635,858 km (0.06 R)
• M24: 39,080,798 km (0.061 R)
• M25: 40,035,681 km (0.094 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 66.4

Radius: 9.3

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 9.14 AU - 10.24 AU

Year: 11304 Days

Day: 12.1 Hours

Environment

Temp: -183 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 66,065,654 km

• M1: 115,639 km (0.106 R)
• M2: 610,210 km (0.108 R)
• M3: 2,761,726 km (0.047 R)
• M4: 6,525,609 km (0.086 R)
• M5: 10,348,582 km (0.072 R)
• M6: 16,263,981 km (0.119 R)
• M7: 22,700,729 km (0.103 R)

Planet 10 - Ice Giant

Semi-Major Axis: 12.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 650.8

Radius: 5.9

Gravity: 18.7 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 10.83 AU - 14.21 AU

Year: 16601 Days

Day: 17.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 66,065,654 km

• M1: 73,453 km (0.087 R)
• M2: 300,542 km (0.073 R)
• M3: 738,415 km (0.097 R)
• M4: 940,821 km (0.119 R)
• M5: 1,154,746 km (0.056 R)
• M6: 1,460,823 km (0.069 R)
• M7: 3,025,767 km (0.111 R)
• M8: 3,694,469 km (0.115 R)
• M9: 4,655,037 km (0.114 R)
• M10: 6,007,102 km (0.068 R)
• M11: 6,496,736 km (0.068 R)
• M12: 8,077,387 km (0.107 R)
• M13: 8,982,754 km (0.09 R)
• M14: 9,406,116 km (0.118 R)
• M15: 9,622,733 km (0.056 R)
• M16: 10,874,120 km (0.095 R)
• M17: 12,039,188 km (0.117 R)
• M18: 15,574,036 km (0.052 R)
• M19: 17,050,567 km (0.11 R)
• M20: 17,291,868 km (0.119 R)
• M21: 18,113,011 km (0.104 R)
• M22: 19,480,336 km (0.067 R)
• M23: 20,099,671 km (0.094 R)
• M24: 22,611,868 km (0.108 R)
• M25: 28,814,345 km (0.088 R)
• M26: 30,672,949 km (0.074 R)
• M27: 32,240,884 km (0.115 R)
• M28: 37,806,972 km (0.073 R)
• M29: 39,047,737 km (0.045 R)
• M30: 39,748,753 km (0.098 R)
• M31: 40,457,996 km (0.101 R)
• M32: 41,320,278 km (0.112 R)
• M33: 41,901,915 km (0.112 R)
• M34: 42,636,590 km (0.053 R)
• M35: 45,971,426 km (0.105 R)
• M36: 55,411,949 km (0.089 R)
• M37: 59,745,650 km (0.108 R)
• M38: 59,931,001 km (0.098 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 381 - 16,110 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit