🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.92

Radius: 0.97

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.48 AU - 0.54 AU

Year: 235 Days

Day: 13.1 Hours

Environment

Temp: -107 °C

Axial Tilt: 32 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 33,406,486 km

• M1: 22,739 km (0.08 R)
• M2: 238,010 km (0.041 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.16

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.59 AU - 0.69 AU

Year: 331 Days

Day: 29.9 Hours

Environment

Temp: -132 °C

Axial Tilt: 17.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.1

Radius: 11

Gravity: 7.51 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.53 AU - 0.85 AU

Year: 370 Days

Day: 9.2 Hours

Environment

Temp: -139 °C

Axial Tilt: 44.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 33,406,486 km

• M1: 142,866 km (0.072 R)
• M2: 780,452 km (0.117 R)
• M3: 1,395,599 km (0.111 R)
• M4: 1,964,968 km (0.107 R)
• M5: 2,377,559 km (0.05 R)
• M6: 2,837,423 km (0.093 R)
• M7: 4,110,201 km (0.118 R)
• M8: 5,399,286 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 925.4

Radius: 10.5

Gravity: 8.39 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.85 AU - 0.95 AU

Year: 551 Days

Day: 11.2 Hours

Environment

Temp: -146 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,406,486 km

• M1: 130,599 km (0.1 R)
• M2: 479,611 km (0.103 R)
• M3: 908,957 km (0.1 R)
• M4: 1,279,511 km (0.089 R)
• M5: 1,625,680 km (0.07 R)
• M6: 2,389,676 km (0.084 R)
• M7: 2,993,902 km (0.097 R)
• M8: 3,403,501 km (0.067 R)
• M9: 3,738,600 km (0.085 R)
• M10: 4,367,061 km (0.112 R)
• M11: 6,599,360 km (0.097 R)
• M12: 7,297,085 km (0.065 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510

Radius: 15

Gravity: 2.27 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.02 AU - 1.1 AU

Year: 705 Days

Day: 6.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 33,406,486 km

• M1: 186,549 km (0.037 R)
• M2: 680,820 km (0.098 R)
• M3: 1,167,611 km (0.116 R)
• M4: 1,794,426 km (0.104 R)
• M5: 2,398,652 km (0.114 R)
• M6: 2,871,980 km (0.041 R)
• M7: 3,358,173 km (0.073 R)
• M8: 4,607,914 km (0.05 R)
• M9: 5,471,093 km (0.094 R)
• M10: 6,303,157 km (0.114 R)
• M11: 6,780,673 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 886.1

Radius: 12.7

Gravity: 5.49 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.26 AU - 1.3 AU

Year: 935 Days

Day: 9.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 33,406,486 km

• M1: 159,471 km (0.089 R)
• M2: 699,370 km (0.099 R)
• M3: 1,931,309 km (0.064 R)
• M4: 2,335,223 km (0.061 R)
• M5: 2,859,563 km (0.108 R)
• M6: 3,275,595 km (0.095 R)
• M7: 3,968,383 km (0.082 R)
• M8: 4,775,014 km (0.114 R)
• M9: 5,247,145 km (0.053 R)
• M10: 5,667,665 km (0.071 R)
• M11: 6,554,332 km (0.12 R)
• M12: 7,581,321 km (0.09 R)
• M13: 7,989,873 km (0.039 R)
• M14: 8,413,085 km (0.076 R)
• M15: 8,879,232 km (0.077 R)
• M16: 9,537,313 km (0.077 R)
• M17: 10,166,372 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986.7

Radius: 11.5

Gravity: 7.46 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 1.34 AU - 2.08 AU

Year: 1444 Days

Day: 5.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 33,406,486 km

• M1: 144,212 km (0.117 R)
• M2: 537,505 km (0.096 R)
• M3: 902,674 km (0.079 R)
• M4: 1,340,846 km (0.114 R)
• M5: 1,744,461 km (0.092 R)
• M6: 2,302,610 km (0.116 R)
• M7: 2,734,350 km (0.058 R)
• M8: 3,780,039 km (0.116 R)
• M9: 5,357,399 km (0.04 R)
• M10: 5,836,112 km (0.099 R)
• M11: 8,368,206 km (0.03 R)
• M12: 9,236,621 km (0.081 R)
• M13: 10,971,508 km (0.076 R)
• M14: 11,558,081 km (0.086 R)
• M15: 13,075,602 km (0.098 R)
• M16: 14,765,908 km (0.079 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 411.6

Radius: 9.1

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.89 AU - 2.49 AU

Year: 2093 Days

Day: 14.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 33,406,486 km

• M1: 113,246 km (0.117 R)
• M2: 472,580 km (0.115 R)
• M3: 756,666 km (0.097 R)
• M4: 2,352,576 km (0.107 R)
• M5: 2,844,304 km (0.042 R)
• M6: 3,292,051 km (0.115 R)
• M7: 3,700,453 km (0.068 R)
• M8: 4,443,655 km (0.043 R)
• M9: 6,175,849 km (0.058 R)
• M10: 6,620,603 km (0.102 R)
• M11: 7,518,789 km (0.091 R)
• M12: 7,997,353 km (0.107 R)
• M13: 9,653,251 km (0.092 R)
• M14: 10,117,454 km (0.059 R)
• M15: 11,054,834 km (0.108 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 163.1

Radius: 8.1

Gravity: 2.49 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 5.03 AU - 6.01 AU

Year: 8374 Days

Day: 14.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 33,406,486 km

• M1: 113,694 km (0.078 R)
• M2: 416,480 km (0.086 R)
• M3: 907,012 km (0.116 R)
• M4: 1,218,475 km (0.114 R)
• M5: 2,386,684 km (0.088 R)
• M6: 2,761,427 km (0.088 R)
• M7: 5,125,373 km (0.117 R)
• M8: 6,612,824 km (0.108 R)
• M9: 8,079,781 km (0.096 R)
• M10: 10,245,360 km (0.104 R)
• M11: 10,885,489 km (0.059 R)
• M12: 12,530,318 km (0.063 R)
• M13: 13,311,967 km (0.109 R)
• M14: 15,964,786 km (0.088 R)
• M15: 17,295,758 km (0.061 R)
• M16: 17,775,518 km (0.075 R)
• M17: 20,978,109 km (0.111 R)
• M18: 24,772,061 km (0.055 R)

Asteroid Belt

Center: 7.26 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 10 - Ice Giant

Semi-Major Axis: 9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 76.3

Radius: 7.4

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 8.87 AU - 9.14 AU

Year: 17433 Days

Day: 17.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 33,406,486 km

• M1: 92,003 km (0.106 R)
• M2: 558,299 km (0.107 R)
• M3: 863,180 km (0.105 R)
• M4: 1,582,446 km (0.062 R)
• M5: 2,613,475 km (0.047 R)
• M6: 3,007,964 km (0.037 R)
• M7: 4,132,641 km (0.118 R)
• M8: 4,669,099 km (0.091 R)
• M9: 5,484,856 km (0.102 R)
• M10: 6,727,566 km (0.069 R)
• M11: 7,432,770 km (0.091 R)
• M12: 8,422,211 km (0.076 R)
• M13: 8,989,934 km (0.094 R)
• M14: 12,839,985 km (0.102 R)
• M15: 18,126,624 km (0.089 R)
• M16: 19,003,418 km (0.108 R)
• M17: 20,695,968 km (0.036 R)
• M18: 21,355,844 km (0.104 R)
• M19: 25,114,191 km (0.111 R)
• M20: 26,203,114 km (0.118 R)
• M21: 28,926,394 km (0.062 R)
• M22: 32,124,048 km (0.117 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 528 - 16,306 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit