🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.54 AU - 0.74 AU

Year: 331 Days

Day: 19.6 Hours

Environment

Temp: -135 °C

Axial Tilt: 15.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 588.2

Radius: 9.7

Gravity: 6.25 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.76 AU - 0.98 AU

Year: 524 Days

Day: 14.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 70,725,792 km

• M1: 120,725 km (0.111 R)
• M2: 464,053 km (0.106 R)
• M3: 839,094 km (0.119 R)
• M4: 1,341,743 km (0.091 R)
• M5: 1,879,398 km (0.036 R)
• M6: 2,304,406 km (0.075 R)
• M7: 4,458,914 km (0.063 R)
• M8: 5,122,381 km (0.106 R)
• M9: 6,211,902 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 277.6

Radius: 14.9

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 1.02 AU - 1.06 AU

Year: 685 Days

Day: 7 Hours

Environment

Temp: -164 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 70,725,792 km

• M1: 185,352 km (0.09 R)
• M2: 661,971 km (0.091 R)
• M3: 1,239,418 km (0.112 R)
• M4: 2,469,262 km (0.115 R)
• M5: 3,108,345 km (0.111 R)
• M6: 4,012,364 km (0.071 R)
• M7: 5,258,365 km (0.051 R)
• M8: 5,766,400 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 523

Radius: 8.4

Gravity: 7.41 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.88 AU - 1.2 AU

Year: 685 Days

Day: 6 Hours

Environment

Temp: -161 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 70,725,792 km

• M1: 104,419 km (0.045 R)
• M2: 378,632 km (0.061 R)
• M3: 667,207 km (0.075 R)
• M4: 991,834 km (0.119 R)
• M5: 1,507,498 km (0.096 R)
• M6: 1,802,355 km (0.088 R)
• M7: 2,605,097 km (0.092 R)
• M8: 2,951,267 km (0.088 R)
• M9: 3,227,724 km (0.036 R)
• M10: 3,508,519 km (0.117 R)
• M11: 4,388,902 km (0.095 R)
• M12: 4,750,480 km (0.102 R)
• M13: 5,623,833 km (0.091 R)
• M14: 6,479,832 km (0.119 R)
• M15: 6,907,831 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 115.2

Radius: 8.9

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1 AU - 1.32 AU

Year: 807 Days

Day: 9.8 Hours

Environment

Temp: -167 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 70,725,792 km

• M1: 110,852 km (0.049 R)
• M2: 394,938 km (0.089 R)
• M3: 766,390 km (0.086 R)
• M4: 1,062,594 km (0.069 R)
• M5: 1,524,402 km (0.112 R)
• M6: 2,099,307 km (0.052 R)
• M7: 2,573,831 km (0.086 R)
• M8: 3,268,564 km (0.059 R)
• M9: 3,785,724 km (0.089 R)
• M10: 4,198,763 km (0.092 R)
• M11: 4,683,461 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 650.1

Radius: 13.5

Gravity: 3.57 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.2 AU - 1.28 AU

Year: 892 Days

Day: 15 Hours

Environment

Temp: -160 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 70,725,792 km

• M1: 168,148 km (0.077 R)
• M2: 749,934 km (0.027 R)
• M3: 1,436,439 km (0.07 R)
• M4: 2,102,897 km (0.062 R)
• M5: 2,645,339 km (0.073 R)
• M6: 3,254,053 km (0.032 R)
• M7: 3,700,902 km (0.116 R)
• M8: 4,668,351 km (0.078 R)
• M9: 6,417,001 km (0.059 R)
• M10: 7,102,608 km (0.086 R)
• M11: 7,666,442 km (0.07 R)
• M12: 8,542,487 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 552.5

Radius: 4.1

Gravity: 32.87 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 7.55 AU - 8.09 AU

Year: 14120 Days

Day: 19.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 70,725,792 km

• M1: 51,162 km (0.058 R)
• M2: 198,367 km (0.061 R)
• M3: 378,183 km (0.114 R)
• M4: 593,156 km (0.099 R)
• M5: 876,045 km (0.053 R)
• M6: 1,025,793 km (0.097 R)
• M7: 1,535,772 km (0.106 R)
• M8: 3,723,192 km (0.105 R)
• M9: 4,480,755 km (0.105 R)
• M10: 6,773,642 km (0.116 R)
• M11: 7,233,805 km (0.111 R)
• M12: 7,362,908 km (0.101 R)
• M13: 7,985,385 km (0.104 R)
• M14: 8,836,597 km (0.11 R)
• M15: 9,233,629 km (0.106 R)
• M16: 10,884,891 km (0.076 R)
• M17: 11,632,581 km (0.088 R)
• M18: 11,988,773 km (0.107 R)
• M19: 12,911,493 km (0.107 R)
• M20: 14,758,578 km (0.058 R)
• M21: 15,387,936 km (0.072 R)
• M22: 16,254,407 km (0.11 R)
• M23: 19,460,439 km (0.088 R)
• M24: 22,602,293 km (0.067 R)
• M25: 24,972,672 km (0.056 R)
• M26: 27,713,006 km (0.088 R)
• M27: 32,597,226 km (0.099 R)
• M28: 34,022,445 km (0.09 R)
• M29: 34,385,071 km (0.072 R)
• M30: 36,237,242 km (0.074 R)
• M31: 38,808,829 km (0.108 R)
• M32: 49,071,393 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 573

Radius: 4.5

Gravity: 28.3 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 9.55 AU - 9.91 AU

Year: 19597 Days

Day: 21.8 Hours

Environment

Temp: -225 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 70,725,792 km

• M1: 56,099 km (0.084 R)
• M2: 211,232 km (0.118 R)
• M3: 682,765 km (0.118 R)
• M4: 829,221 km (0.101 R)
• M5: 1,032,973 km (0.053 R)
• M6: 1,341,594 km (0.103 R)
• M7: 1,525,749 km (0.044 R)
• M8: 1,779,467 km (0.057 R)
• M9: 2,080,906 km (0.099 R)
• M10: 3,812,651 km (0.047 R)
• M11: 5,404,821 km (0.118 R)
• M12: 6,034,928 km (0.119 R)
• M13: 9,049,624 km (0.117 R)
• M14: 19,374,271 km (0.071 R)
• M15: 21,693,786 km (0.12 R)
• M16: 22,770,591 km (0.12 R)
• M17: 32,571,196 km (0.09 R)
• M18: 34,635,049 km (0.11 R)
• M19: 38,312,613 km (0.062 R)
• M20: 49,708,231 km (0.089 R)
• M21: 54,371,047 km (0.105 R)
• M22: 55,806,588 km (0.108 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 361 - 12,519 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit