🌌 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: 2.37

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.48 AU - 0.64 AU

Year: 266 Days

Day: 32.4 Hours

Environment

Temp: -129 °C

Axial Tilt: 10.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 55,099,403 km

• M1: 69,563 km (0.096 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 807.4

Radius: 8.7

Gravity: 10.67 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.7 AU - 0.7 AU

Year: 372 Days

Day: 14 Hours

Environment

Temp: -140 °C

Axial Tilt: 166.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,099,403 km

• M1: 108,309 km (0.106 R)
• M2: 457,321 km (0.032 R)
• M3: 767,736 km (0.074 R)
• M4: 1,123,031 km (0.112 R)
• M5: 1,629,121 km (0.088 R)
• M6: 2,081,954 km (0.113 R)
• M7: 3,206,481 km (0.041 R)
• M8: 3,805,471 km (0.11 R)
• M9: 4,364,518 km (0.052 R)
• M10: 5,069,273 km (0.055 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 450.8

Radius: 12.3

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.71 AU - 0.77 AU

Year: 405 Days

Day: 10 Hours

Environment

Temp: -149 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 55,099,403 km

• M1: 153,039 km (0.079 R)
• M2: 641,027 km (0.056 R)
• M3: 1,030,281 km (0.115 R)
• M4: 1,528,292 km (0.068 R)
• M5: 1,967,661 km (0.062 R)
• M6: 2,360,954 km (0.043 R)
• M7: 2,925,237 km (0.117 R)
• M8: 3,310,451 km (0.075 R)
• M9: 4,008,026 km (0.073 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 948.6

Radius: 12.6

Gravity: 5.98 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.83 AU - 0.91 AU

Year: 516 Days

Day: 5.1 Hours

Environment

Temp: -159 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 55,099,403 km

• M1: 156,629 km (0.115 R)
• M2: 576,849 km (0.112 R)
• M3: 1,019,958 km (0.102 R)
• M4: 1,436,439 km (0.094 R)
• M5: 1,934,749 km (0.102 R)
• M6: 2,696,352 km (0.104 R)
• M7: 3,388,841 km (0.101 R)
• M8: 4,022,836 km (0.065 R)
• M9: 4,623,621 km (0.101 R)
• M10: 5,062,392 km (0.119 R)
• M11: 5,600,645 km (0.088 R)
• M12: 6,234,641 km (0.061 R)
• M13: 6,771,697 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142.9

Radius: 8.4

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.56 AU - 1.9 AU

Year: 1447 Days

Day: 12.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 55,099,403 km

• M1: 104,569 km (0.073 R)
• M2: 389,852 km (0.061 R)
• M3: 917,334 km (0.12 R)
• M4: 1,185,114 km (0.113 R)
• M5: 1,668,016 km (0.12 R)
• M6: 3,001,681 km (0.11 R)
• M7: 3,431,326 km (0.103 R)
• M8: 4,151,939 km (0.088 R)
• M9: 4,986,995 km (0.101 R)
• M10: 6,879,707 km (0.061 R)
• M11: 7,159,604 km (0.11 R)

Asteroid Belt

Center: 3.06 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 4.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 596.7

Radius: 12.3

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 3.85 AU - 4.93 AU

Year: 5848 Days

Day: 12.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 55,099,403 km

• M1: 154,834 km (0.098 R)
• M2: 566,527 km (0.074 R)
• M3: 1,416,393 km (0.115 R)
• M4: 2,207,466 km (0.11 R)
• M5: 2,739,586 km (0.075 R)
• M6: 3,254,202 km (0.051 R)
• M7: 3,878,474 km (0.105 R)
• M8: 6,966,324 km (0.062 R)
• M9: 7,349,295 km (0.116 R)
• M10: 7,968,929 km (0.085 R)
• M11: 9,229,889 km (0.088 R)
• M12: 11,460,394 km (0.084 R)
• M13: 12,598,534 km (0.05 R)
• M14: 15,330,939 km (0.106 R)
• M15: 16,041,380 km (0.099 R)
• M16: 21,570,667 km (0.107 R)
• M17: 24,083,612 km (0.031 R)
• M18: 27,903,593 km (0.061 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 737.6

Radius: 10.5

Gravity: 6.69 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 3.93 AU - 5.39 AU

Year: 6396 Days

Day: 12.5 Hours

Environment

Temp: -216 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 55,099,403 km

• M1: 135,685 km (0.109 R)
• M2: 561,291 km (0.082 R)
• M3: 989,740 km (0.07 R)
• M4: 1,412,952 km (0.114 R)
• M5: 1,756,429 km (0.113 R)
• M6: 2,286,304 km (0.032 R)
• M7: 2,900,703 km (0.107 R)
• M8: 3,599,026 km (0.075 R)
• M9: 4,810,768 km (0.085 R)
• M10: 5,852,867 km (0.115 R)
• M11: 6,478,485 km (0.098 R)
• M12: 6,931,767 km (0.104 R)
• M13: 8,625,065 km (0.119 R)
• M14: 10,817,721 km (0.092 R)
• M15: 12,120,868 km (0.074 R)
• M16: 13,525,891 km (0.04 R)
• M17: 14,267,747 km (0.096 R)
• M18: 15,036,531 km (0.045 R)
• M19: 18,528,444 km (0.116 R)
• M20: 19,229,759 km (0.091 R)
• M21: 20,388,395 km (0.105 R)
• M22: 23,245,265 km (0.079 R)
• M23: 24,727,331 km (0.065 R)
• M24: 25,491,477 km (0.118 R)
• M25: 26,271,331 km (0.106 R)
• M26: 26,800,010 km (0.114 R)
• M27: 27,335,720 km (0.107 R)
• M28: 28,706,485 km (0.103 R)
• M29: 29,835,500 km (0.113 R)
• M30: 31,386,680 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 719.1

Radius: 4.5

Gravity: 35.51 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 6.45 AU - 7.75 AU

Year: 12029 Days

Day: 17.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 55,099,403 km

• M1: 55,950 km (0.114 R)
• M2: 197,469 km (0.106 R)
• M3: 361,129 km (0.092 R)
• M4: 626,217 km (0.063 R)
• M5: 875,447 km (0.086 R)
• M6: 1,139,337 km (0.064 R)
• M7: 1,426,416 km (0.111 R)
• M8: 1,711,699 km (0.042 R)
• M9: 2,296,627 km (0.105 R)
• M10: 4,163,159 km (0.065 R)
• M11: 4,311,261 km (0.119 R)
• M12: 4,555,554 km (0.111 R)
• M13: 4,776,810 km (0.105 R)
• M14: 5,770,738 km (0.039 R)
• M15: 6,374,515 km (0.051 R)
• M16: 6,854,126 km (0.094 R)
• M17: 9,983,713 km (0.108 R)
• M18: 11,533,996 km (0.104 R)
• M19: 12,611,250 km (0.104 R)
• M20: 15,242,078 km (0.065 R)
• M21: 15,665,889 km (0.073 R)
• M22: 16,759,749 km (0.032 R)
• M23: 17,439,821 km (0.062 R)
• M24: 19,016,881 km (0.089 R)
• M25: 19,425,583 km (0.087 R)
• M26: 19,923,594 km (0.05 R)
• M27: 21,645,316 km (0.093 R)
• M28: 21,911,750 km (0.098 R)
• M29: 27,091,576 km (0.074 R)
• M30: 30,851,419 km (0.046 R)
• M31: 41,946,645 km (0.113 R)
• M32: 45,482,989 km (0.089 R)
• M33: 46,066,570 km (0.051 R)
• M34: 46,213,325 km (0.055 R)
• M35: 52,339,657 km (0.106 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: 492 - 14,865 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit