🌌 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: 0.21

Radius: 0.54

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.46 AU - 0.56 AU

Year: 239 Days

Day: 32.1 Hours

Environment

Temp: -107 °C

Axial Tilt: 28 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 771.7

Radius: 12.9

Gravity: 4.64 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.77 AU - 0.95 AU

Year: 523 Days

Day: 14.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 74,695,777 km

• M1: 160,519 km (0.028 R)
• M2: 583,731 km (0.108 R)
• M3: 997,219 km (0.062 R)
• M4: 1,596,209 km (0.032 R)
• M5: 2,990,312 km (0.052 R)
• M6: 3,407,690 km (0.043 R)
• M7: 3,891,340 km (0.111 R)
• M8: 4,837,397 km (0.072 R)
• M9: 5,537,814 km (0.106 R)
• M10: 6,116,010 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 960.3

Radius: 10.2

Gravity: 9.23 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 1.19 AU - 1.65 AU

Year: 1110 Days

Day: 8.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 74,695,777 km

• M1: 126,859 km (0.083 R)
• M2: 528,679 km (0.094 R)
• M3: 1,101,938 km (0.082 R)
• M4: 1,632,412 km (0.041 R)
• M5: 2,156,154 km (0.11 R)
• M6: 2,658,504 km (0.089 R)
• M7: 5,036,362 km (0.104 R)
• M8: 7,526,269 km (0.086 R)
• M9: 8,627,608 km (0.074 R)
• M10: 10,741,576 km (0.078 R)
• M11: 11,079,218 km (0.114 R)
• M12: 11,740,441 km (0.089 R)
• M13: 12,390,892 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 35.8

Radius: 9.4

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 1.42 AU - 1.7 AU

Year: 1278 Days

Day: 8.2 Hours

Environment

Temp: -174 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 74,695,777 km

• M1: 149,299 km (0.047 R)
• M2: 657,483 km (0.114 R)
• M3: 1,107,772 km (0.07 R)
• M4: 1,669,363 km (0.066 R)
• M5: 3,963,745 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 394.4

Radius: 14.6

Gravity: 1.85 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 2.01 AU - 2.51 AU

Year: 2229 Days

Day: 8.1 Hours

Environment

Temp: -193 °C

Axial Tilt: 59.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 74,695,777 km

• M1: 189,840 km (0.048 R)
• M2: 683,213 km (0.077 R)
• M3: 1,406,370 km (0.047 R)
• M4: 1,874,461 km (0.084 R)
• M5: 3,784,377 km (0.073 R)
• M6: 5,254,476 km (0.052 R)
• M7: 7,292,298 km (0.071 R)
• M8: 7,875,281 km (0.052 R)
• M9: 8,640,324 km (0.089 R)
• M10: 9,293,768 km (0.043 R)
• M11: 12,206,139 km (0.06 R)
• M12: 13,070,216 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 613.5

Radius: 14.3

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 5.24 AU - 5.7 AU

Year: 8392 Days

Day: 7.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 43 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 74,695,777 km

• M1: 177,872 km (0.098 R)
• M2: 729,589 km (0.103 R)
• M3: 1,544,299 km (0.085 R)
• M4: 2,151,816 km (0.111 R)
• M5: 2,896,963 km (0.115 R)
• M6: 3,432,074 km (0.105 R)
• M7: 4,818,547 km (0.059 R)
• M8: 5,386,870 km (0.077 R)
• M9: 6,168,668 km (0.073 R)
• M10: 6,767,209 km (0.112 R)
• M11: 7,678,410 km (0.04 R)
• M12: 8,414,431 km (0.087 R)
• M13: 11,785,619 km (0.094 R)
• M14: 12,710,134 km (0.078 R)
• M15: 13,218,917 km (0.112 R)
• M16: 15,970,171 km (0.066 R)
• M17: 16,430,185 km (0.119 R)
• M18: 20,053,445 km (0.088 R)
• M19: 21,292,115 km (0.079 R)
• M20: 23,751,205 km (0.109 R)
• M21: 26,031,077 km (0.082 R)
• M22: 30,516,619 km (0.097 R)
• M23: 32,888,942 km (0.056 R)
• M24: 37,882,070 km (0.091 R)
• M25: 39,533,182 km (0.045 R)
• M26: 40,619,562 km (0.118 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 376.7

Radius: 4

Gravity: 23.54 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 5.67 AU - 6.39 AU

Year: 9714 Days

Day: 15.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 74,695,777 km

• M1: 51,013 km (0.049 R)
• M2: 184,903 km (0.1 R)
• M3: 322,084 km (0.072 R)
• M4: 615,446 km (0.05 R)
• M5: 867,368 km (0.091 R)
• M6: 997,668 km (0.118 R)
• M7: 1,173,745 km (0.081 R)
• M8: 1,419,684 km (0.1 R)
• M9: 1,588,580 km (0.101 R)
• M10: 1,889,720 km (0.091 R)
• M11: 2,062,207 km (0.086 R)
• M12: 3,721,247 km (0.046 R)
• M13: 4,547,775 km (0.115 R)
• M14: 4,829,468 km (0.057 R)
• M15: 5,003,899 km (0.113 R)
• M16: 6,140,693 km (0.068 R)
• M17: 8,234,764 km (0.112 R)
• M18: 8,954,031 km (0.099 R)
• M19: 11,260,531 km (0.088 R)
• M20: 11,880,464 km (0.084 R)
• M21: 13,934,443 km (0.083 R)
• M22: 15,076,025 km (0.047 R)
• M23: 15,574,784 km (0.04 R)
• M24: 16,869,553 km (0.11 R)
• M25: 22,204,513 km (0.037 R)
• M26: 22,606,333 km (0.075 R)
• M27: 23,590,537 km (0.108 R)
• M28: 26,353,909 km (0.083 R)
• M29: 27,813,236 km (0.065 R)
• M30: 30,004,097 km (0.072 R)
• M31: 31,695,600 km (0.068 R)
• M32: 35,375,857 km (0.107 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 664.1

Radius: 7.8

Gravity: 10.92 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 8.89 AU - 10.47 AU

Year: 19757 Days

Day: 17.8 Hours

Environment

Temp: -236 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 74,695,777 km

• M1: 97,089 km (0.117 R)
• M2: 343,776 km (0.045 R)
• M3: 924,216 km (0.11 R)
• M4: 2,450,862 km (0.117 R)
• M5: 2,729,413 km (0.051 R)
• M6: 3,054,938 km (0.065 R)
• M7: 4,030,915 km (0.1 R)
• M8: 7,358,121 km (0.114 R)
• M9: 9,761,560 km (0.084 R)
• M10: 11,392,775 km (0.103 R)
• M11: 12,712,528 km (0.068 R)
• M12: 13,480,414 km (0.056 R)
• M13: 13,912,153 km (0.041 R)
• M14: 15,810,849 km (0.103 R)
• M15: 17,790,029 km (0.073 R)
• M16: 18,661,586 km (0.095 R)
• M17: 23,760,779 km (0.11 R)
• M18: 24,285,120 km (0.095 R)
• M19: 27,594,225 km (0.088 R)
• M20: 28,760,939 km (0.097 R)
• M21: 30,081,738 km (0.115 R)
• M22: 30,571,970 km (0.112 R)
• M23: 32,329,745 km (0.089 R)
• M24: 33,889,154 km (0.094 R)
• M25: 35,361,945 km (0.045 R)
• M26: 38,722,810 km (0.026 R)
• M27: 43,683,326 km (0.103 R)
• M28: 44,628,635 km (0.104 R)
• M29: 47,545,943 km (0.103 R)
• M30: 48,378,455 km (0.083 R)
• M31: 57,057,077 km (0.06 R)
• M32: 66,510,615 km (0.037 R)
• M33: 67,133,840 km (0.079 R)
• M34: 69,452,607 km (0.069 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: 292 - 17,576 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit