🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.7

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.55 AU - 0.71 AU

Year: 328 Days

Day: 19.7 Hours

Environment

Temp: -138 °C

Axial Tilt: 25.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 858.1

Radius: 11.2

Gravity: 6.84 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.89 AU - 1.07 AU

Year: 636 Days

Day: 9.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 63,080,720 km

• M1: 139,276 km (0.113 R)
• M2: 1,213,388 km (0.097 R)
• M3: 1,678,638 km (0.095 R)
• M4: 2,651,772 km (0.108 R)
• M5: 3,250,612 km (0.099 R)
• M6: 3,908,394 km (0.081 R)
• M7: 4,686,004 km (0.118 R)
• M8: 5,582,544 km (0.077 R)
• M9: 6,061,855 km (0.081 R)
• M10: 6,694,505 km (0.119 R)
• M11: 7,059,823 km (0.059 R)
• M12: 7,737,052 km (0.071 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 708.5

Radius: 11.7

Gravity: 5.18 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 1.51 AU - 2.33 AU

Year: 1745 Days

Day: 13.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 63,080,720 km

• M1: 145,708 km (0.09 R)
• M2: 518,805 km (0.084 R)
• M3: 1,171,351 km (0.1 R)
• M4: 2,008,501 km (0.076 R)
• M5: 2,864,051 km (0.088 R)
• M6: 3,287,862 km (0.119 R)
• M7: 3,753,560 km (0.101 R)
• M8: 4,358,833 km (0.051 R)
• M9: 5,222,312 km (0.118 R)
• M10: 5,930,359 km (0.073 R)
• M11: 6,295,378 km (0.089 R)
• M12: 7,426,038 km (0.031 R)
• M13: 8,625,813 km (0.096 R)
• M14: 9,159,578 km (0.109 R)
• M15: 10,052,678 km (0.054 R)
• M16: 10,538,123 km (0.11 R)
• M17: 11,185,283 km (0.088 R)
• M18: 12,011,961 km (0.048 R)
• M19: 12,401,065 km (0.081 R)
• M20: 13,041,045 km (0.1 R)
• M21: 14,213,892 km (0.107 R)
• M22: 14,870,477 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 872.7

Radius: 14.6

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 2.31 AU - 2.57 AU

Year: 2500 Days

Day: 15 Hours

Environment

Temp: -194 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 63,080,720 km

• M1: 181,612 km (0.092 R)
• M2: 802,443 km (0.077 R)
• M3: 1,259,614 km (0.073 R)
• M4: 3,346,953 km (0.03 R)
• M5: 4,088,061 km (0.12 R)
• M6: 4,596,993 km (0.117 R)
• M7: 6,058,415 km (0.118 R)
• M8: 10,260,020 km (0.084 R)
• M9: 11,493,604 km (0.071 R)
• M10: 14,640,844 km (0.08 R)
• M11: 15,283,068 km (0.106 R)
• M12: 17,874,253 km (0.078 R)
• M13: 19,244,868 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.4

Radius: 12.4

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 2.35 AU - 3.11 AU

Year: 2959 Days

Day: 11.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 63,080,720 km

• M1: 154,684 km (0.102 R)
• M2: 697,575 km (0.118 R)
• M3: 1,385,127 km (0.116 R)
• M4: 2,000,273 km (0.092 R)
• M5: 2,464,326 km (0.084 R)
• M6: 3,016,641 km (0.115 R)
• M7: 5,162,323 km (0.099 R)
• M8: 5,783,603 km (0.072 R)
• M9: 9,704,414 km (0.077 R)
• M10: 11,661,304 km (0.115 R)
• M11: 16,081,921 km (0.098 R)
• M12: 19,563,063 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 877

Radius: 11.4

Gravity: 6.75 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 2.66 AU - 3.6 AU

Year: 3633 Days

Day: 12.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 63,080,720 km

• M1: 141,968 km (0.081 R)
• M2: 660,624 km (0.096 R)
• M3: 1,271,881 km (0.06 R)
• M4: 1,866,832 km (0.103 R)
• M5: 2,222,725 km (0.036 R)
• M6: 3,093,235 km (0.046 R)
• M7: 3,700,004 km (0.103 R)
• M8: 4,647,557 km (0.079 R)
• M9: 5,048,629 km (0.115 R)
• M10: 5,749,794 km (0.075 R)
• M11: 7,616,327 km (0.076 R)
• M12: 8,104,465 km (0.117 R)
• M13: 8,800,244 km (0.09 R)
• M14: 9,338,049 km (0.088 R)
• M15: 9,938,385 km (0.034 R)
• M16: 10,564,452 km (0.12 R)
• M17: 10,996,191 km (0.101 R)
• M18: 11,484,928 km (0.057 R)
• M19: 12,553,356 km (0.074 R)
• M20: 14,357,356 km (0.073 R)
• M21: 15,931,425 km (0.07 R)
• M22: 17,259,406 km (0.111 R)
• M23: 17,920,030 km (0.048 R)
• M24: 19,355,721 km (0.085 R)
• M25: 19,807,656 km (0.086 R)
• M26: 21,341,931 km (0.083 R)
• M27: 23,314,978 km (0.096 R)
• M28: 24,122,507 km (0.11 R)
• M29: 24,796,894 km (0.102 R)
• M30: 25,253,467 km (0.086 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 961.9

Radius: 9.6

Gravity: 10.44 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 3.22 AU - 3.32 AU

Year: 3879 Days

Day: 13.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 63,080,720 km

• M1: 119,529 km (0.096 R)
• M2: 819,946 km (0.04 R)
• M3: 1,423,873 km (0.027 R)
• M4: 2,624,695 km (0.066 R)
• M5: 3,716,011 km (0.106 R)
• M6: 4,671,194 km (0.078 R)
• M7: 5,468,101 km (0.05 R)
• M8: 6,199,186 km (0.115 R)
• M9: 7,330,296 km (0.108 R)
• M10: 9,217,473 km (0.106 R)
• M11: 10,864,097 km (0.054 R)
• M12: 12,306,370 km (0.099 R)
• M13: 13,149,354 km (0.037 R)
• M14: 13,559,252 km (0.118 R)
• M15: 17,151,246 km (0.097 R)
• M16: 17,579,096 km (0.119 R)
• M17: 19,100,207 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 601.3

Radius: 6.9

Gravity: 12.63 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 7.63 AU - 9.27 AU

Year: 16114 Days

Day: 24.2 Hours

Environment

Temp: -233 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 63,080,720 km

• M1: 85,869 km (0.061 R)
• M2: 478,264 km (0.095 R)
• M3: 720,613 km (0.078 R)
• M4: 1,070,074 km (0.052 R)
• M5: 3,968,233 km (0.068 R)
• M6: 4,427,499 km (0.104 R)
• M7: 5,636,997 km (0.078 R)
• M8: 5,903,132 km (0.09 R)
• M9: 6,177,644 km (0.073 R)
• M10: 6,419,544 km (0.066 R)
• M11: 6,709,913 km (0.067 R)
• M12: 7,819,331 km (0.061 R)
• M13: 8,198,711 km (0.087 R)
• M14: 8,590,508 km (0.113 R)
• M15: 9,570,823 km (0.103 R)
• M16: 10,115,808 km (0.047 R)
• M17: 10,739,033 km (0.112 R)
• M18: 11,813,594 km (0.078 R)
• M19: 12,440,559 km (0.081 R)
• M20: 14,738,981 km (0.075 R)
• M21: 15,245,070 km (0.108 R)
• M22: 19,202,532 km (0.099 R)
• M23: 19,719,094 km (0.109 R)
• M24: 20,960,606 km (0.039 R)
• M25: 25,924,563 km (0.05 R)
• M26: 30,558,806 km (0.079 R)
• M27: 32,947,734 km (0.112 R)
• M28: 36,892,331 km (0.116 R)
• M29: 41,711,327 km (0.107 R)
• M30: 45,399,513 km (0.118 R)
• M31: 51,083,783 km (0.103 R)
• M32: 55,298,853 km (0.09 R)
• M33: 55,819,603 km (0.042 R)
• M34: 60,105,133 km (0.062 R)
• M35: 60,839,958 km (0.097 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 415 - 13,096 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit