🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.55 AU - 0.77 AU

Year: 352 Days

Day: 28.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 33.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 29,969,015 km

• M1: 42,486 km (0.063 R)
• M2: 227,987 km (0.043 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 742.9

Radius: 12.8

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.68 AU - 0.74 AU

Year: 392 Days

Day: 8.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 29,969,015 km

• M1: 159,172 km (0.096 R)
• M2: 583,581 km (0.102 R)
• M3: 1,243,458 km (0.1 R)
• M4: 1,691,354 km (0.063 R)
• M5: 2,137,754 km (0.098 R)
• M6: 2,557,226 km (0.087 R)
• M7: 3,663,203 km (0.107 R)
• M8: 4,122,469 km (0.097 R)
• M9: 5,394,200 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328.6

Radius: 10.9

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.79 AU - 0.93 AU

Year: 523 Days

Day: 10.8 Hours

Environment

Temp: -151 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 29,969,015 km

• M1: 135,685 km (0.114 R)
• M2: 525,388 km (0.08 R)
• M3: 905,516 km (0.075 R)
• M4: 1,371,962 km (0.07 R)
• M5: 2,004,611 km (0.06 R)
• M6: 2,442,784 km (0.042 R)
• M7: 2,792,992 km (0.025 R)
• M8: 3,365,204 km (0.117 R)
• M9: 4,130,248 km (0.101 R)
• M10: 4,519,501 km (0.069 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 648.7

Radius: 15

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.83 AU - 1.31 AU

Year: 726 Days

Day: 10.2 Hours

Environment

Temp: -163 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 29,969,015 km

• M1: 186,549 km (0.089 R)
• M2: 1,454,241 km (0.048 R)
• M3: 2,324,751 km (0.101 R)
• M4: 3,051,946 km (0.115 R)
• M5: 4,193,976 km (0.048 R)
• M6: 5,051,172 km (0.113 R)
• M7: 7,721,494 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 860.8

Radius: 8.4

Gravity: 12.2 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 1.09 AU - 1.37 AU

Year: 895 Days

Day: 5.9 Hours

Environment

Temp: -177 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 29,969,015 km

• M1: 104,719 km (0.037 R)
• M2: 403,765 km (0.067 R)
• M3: 693,685 km (0.032 R)
• M4: 1,031,777 km (0.1 R)
• M5: 1,324,540 km (0.112 R)
• M6: 1,781,112 km (0.1 R)
• M7: 2,082,552 km (0.119 R)
• M8: 2,418,250 km (0.095 R)
• M9: 2,777,284 km (0.12 R)
• M10: 3,833,296 km (0.105 R)
• M11: 4,763,047 km (0.11 R)
• M12: 5,078,848 km (0.046 R)
• M13: 5,388,964 km (0.059 R)
• M14: 5,670,507 km (0.092 R)
• M15: 6,850,236 km (0.079 R)
• M16: 7,399,559 km (0.081 R)
• M17: 7,672,426 km (0.041 R)
• M18: 8,371,048 km (0.106 R)
• M19: 8,722,154 km (0.074 R)
• M20: 9,224,654 km (0.116 R)
• M21: 9,512,031 km (0.092 R)
• M22: 10,195,693 km (0.118 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 114.8

Radius: 5.3

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 5.91 AU - 6.57 AU

Year: 10226 Days

Day: 19.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 29,969,015 km

• M1: 65,973 km (0.12 R)
• M2: 413,189 km (0.1 R)
• M3: 902,225 km (0.073 R)
• M4: 1,080,845 km (0.096 R)
• M5: 1,377,796 km (0.114 R)
• M6: 1,665,323 km (0.092 R)
• M7: 3,636,126 km (0.106 R)
• M8: 3,828,210 km (0.062 R)
• M9: 4,517,556 km (0.104 R)
• M10: 4,790,124 km (0.036 R)
• M11: 5,259,562 km (0.085 R)
• M12: 5,533,326 km (0.032 R)
• M13: 5,702,222 km (0.116 R)
• M14: 6,050,037 km (0.104 R)
• M15: 6,949,419 km (0.118 R)
• M16: 8,368,355 km (0.114 R)
• M17: 8,971,085 km (0.063 R)
• M18: 15,476,199 km (0.079 R)
• M19: 15,868,445 km (0.075 R)
• M20: 19,506,964 km (0.108 R)
• M21: 20,496,404 km (0.115 R)
• M22: 23,517,683 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 299

Radius: 3

Gravity: 33.22 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 6.2 AU - 6.66 AU

Year: 10696 Days

Day: 21.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 29,969,015 km

• M1: 37,250 km (0.096 R)
• M2: 237,412 km (0.107 R)
• M3: 336,745 km (0.112 R)
• M4: 582,385 km (0.079 R)
• M5: 697,425 km (0.072 R)
• M6: 1,032,674 km (0.035 R)
• M7: 3,142,902 km (0.115 R)
• M8: 4,344,771 km (0.043 R)
• M9: 5,597,803 km (0.101 R)
• M10: 6,221,177 km (0.067 R)
• M11: 8,788,426 km (0.112 R)
• M12: 9,627,670 km (0.115 R)
• M13: 10,567,294 km (0.101 R)
• M14: 10,713,302 km (0.119 R)
• M15: 11,825,562 km (0.065 R)
• M16: 12,409,592 km (0.096 R)
• M17: 12,572,205 km (0.073 R)
• M18: 13,292,968 km (0.091 R)
• M19: 13,520,207 km (0.082 R)
• M20: 24,033,796 km (0.068 R)
• M21: 26,729,848 km (0.071 R)
• M22: 28,290,603 km (0.117 R)
• M23: 30,793,525 km (0.118 R)
• M24: 31,996,890 km (0.071 R)
• M25: 32,302,519 km (0.049 R)
• M26: 32,610,092 km (0.097 R)
• M27: 33,439,911 km (0.06 R)
• M28: 33,754,815 km (0.103 R)
• M29: 34,177,578 km (0.101 R)
• M30: 36,455,206 km (0.119 R)
• M31: 36,677,359 km (0.075 R)
• M32: 36,788,660 km (0.07 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 56.7

Radius: 6

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 7.59 AU - 10.05 AU

Year: 17184 Days

Day: 21 Hours

Environment

Temp: -225 °C

Axial Tilt: 41.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 29,969,015 km

• M1: 75,846 km (0.105 R)
• M2: 306,676 km (0.081 R)
• M3: 558,748 km (0.078 R)
• M4: 973,882 km (0.054 R)
• M5: 1,291,478 km (0.109 R)
• M6: 2,289,446 km (0.106 R)
• M7: 2,691,266 km (0.062 R)
• M8: 2,984,478 km (0.118 R)
• M9: 3,634,929 km (0.079 R)
• M10: 5,998,276 km (0.06 R)
• M11: 6,467,415 km (0.107 R)
• M12: 6,926,980 km (0.119 R)
• M13: 7,514,151 km (0.089 R)
• M14: 8,022,036 km (0.085 R)
• M15: 10,955,950 km (0.108 R)
• M16: 14,480,475 km (0.084 R)
• M17: 16,921,913 km (0.11 R)
• M18: 21,506,489 km (0.104 R)
• M19: 23,126,036 km (0.105 R)
• M20: 24,120,413 km (0.066 R)
• M21: 29,434,129 km (0.051 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 207 - 17,587 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit