🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.3

Radius: 1.4

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.5 AU - 0.6 AU

Year: 259 Days

Day: 32.1 Hours

Environment

Temp: -121 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 700.8

Radius: 9.4

Gravity: 7.93 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.75 AU - 0.87 AU

Year: 464 Days

Day: 9.1 Hours

Environment

Temp: -144 °C

Axial Tilt: 11.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 45,933,609 km

• M1: 116,836 km (0.084 R)
• M2: 544,536 km (0.116 R)
• M3: 942,467 km (0.101 R)
• M4: 1,353,861 km (0.043 R)
• M5: 2,495,891 km (0.114 R)
• M6: 2,908,781 km (0.092 R)
• M7: 3,689,981 km (0.066 R)
• M8: 4,129,948 km (0.099 R)
• M9: 4,725,198 km (0.111 R)
• M10: 5,147,663 km (0.114 R)
• M11: 5,544,247 km (0.11 R)
• M12: 6,068,587 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 58.4

Radius: 14.7

Gravity: 0.27 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 1.66 AU - 1.68 AU

Year: 1372 Days

Day: 9.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 45,933,609 km

• M1: 182,809 km (0.113 R)
• M2: 651,648 km (0.11 R)
• M3: 1,264,252 km (0.113 R)
• M4: 1,772,286 km (0.068 R)
• M5: 2,312,484 km (0.082 R)
• M6: 2,880,208 km (0.107 R)
• M7: 3,540,832 km (0.108 R)
• M8: 4,764,842 km (0.118 R)
• M9: 5,308,780 km (0.05 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 440.6

Radius: 8.3

Gravity: 6.4 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.49 AU - 1.93 AU

Year: 1422 Days

Day: 5.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 45,933,609 km

• M1: 106,514 km (0.097 R)
• M2: 452,234 km (0.116 R)
• M3: 828,772 km (0.106 R)
• M4: 1,197,381 km (0.101 R)
• M5: 1,611,019 km (0.049 R)
• M6: 3,017,090 km (0.05 R)
• M7: 3,387,494 km (0.11 R)
• M8: 4,871,505 km (0.093 R)
• M9: 5,261,656 km (0.112 R)
• M10: 8,686,700 km (0.112 R)
• M11: 9,261,305 km (0.112 R)
• M12: 9,528,038 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.8

Radius: 11.6

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 4.05 AU - 4.33 AU

Year: 5453 Days

Day: 9 Hours

Environment

Temp: -213 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,933,609 km

• M1: 241,900 km (0.085 R)
• M2: 1,763,759 km (0.091 R)
• M3: 2,175,602 km (0.079 R)
• M4: 3,714,515 km (0.08 R)
• M5: 5,243,705 km (0.047 R)
• M6: 5,827,435 km (0.096 R)
• M7: 7,156,912 km (0.111 R)
• M8: 7,576,235 km (0.109 R)
• M9: 8,824,180 km (0.114 R)
• M10: 10,164,128 km (0.073 R)
• M11: 14,788,797 km (0.063 R)
• M12: 16,394,730 km (0.058 R)
• M13: 17,182,811 km (0.08 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 679.5

Radius: 7.6

Gravity: 11.76 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 8.24 AU - 10.88 AU

Year: 18794 Days

Day: 22 Hours

Environment

Temp: -226 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 45,933,609 km

• M1: 94,546 km (0.112 R)
• M2: 339,886 km (0.049 R)
• M3: 601,084 km (0.104 R)
• M4: 1,314,367 km (0.036 R)
• M5: 2,157,500 km (0.086 R)
• M6: 2,660,149 km (0.104 R)
• M7: 2,977,446 km (0.091 R)
• M8: 3,458,553 km (0.033 R)
• M9: 3,777,346 km (0.081 R)
• M10: 4,541,492 km (0.095 R)
• M11: 5,481,266 km (0.104 R)
• M12: 5,956,389 km (0.083 R)
• M13: 7,740,044 km (0.055 R)
• M14: 10,317,915 km (0.094 R)
• M15: 13,000,504 km (0.063 R)
• M16: 13,418,331 km (0.096 R)
• M17: 15,103,251 km (0.068 R)
• M18: 15,565,060 km (0.087 R)
• M19: 16,195,316 km (0.093 R)
• M20: 18,016,520 km (0.104 R)
• M21: 19,154,511 km (0.07 R)
• M22: 27,916,758 km (0.088 R)
• M23: 28,964,392 km (0.092 R)
• M24: 29,438,318 km (0.065 R)
• M25: 37,042,527 km (0.088 R)
• M26: 38,734,479 km (0.083 R)
• M27: 43,807,492 km (0.055 R)
• M28: 47,643,481 km (0.039 R)
• M29: 50,321,732 km (0.118 R)
• M30: 57,639,461 km (0.068 R)
• M31: 58,201,201 km (0.041 R)
• M32: 61,064,654 km (0.088 R)
• M33: 67,900,230 km (0.087 R)
• M34: 69,368,084 km (0.077 R)
• M35: 69,791,296 km (0.096 R)
• M36: 70,857,031 km (0.08 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 545.9

Radius: 3.7

Gravity: 39.88 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 8.9 AU - 10.46 AU

Year: 19149 Days

Day: 20.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 45,933,609 km

• M1: 46,226 km (0.091 R)
• M2: 176,525 km (0.099 R)
• M3: 406,757 km (0.089 R)
• M4: 745,745 km (0.056 R)
• M5: 1,565,542 km (0.08 R)
• M6: 1,751,043 km (0.094 R)
• M7: 1,989,053 km (0.069 R)
• M8: 2,311,138 km (0.119 R)
• M9: 2,667,031 km (0.086 R)
• M10: 3,348,898 km (0.053 R)
• M11: 6,286,551 km (0.049 R)
• M12: 9,130,257 km (0.089 R)
• M13: 9,899,190 km (0.104 R)
• M14: 12,267,025 km (0.104 R)
• M15: 13,065,130 km (0.059 R)
• M16: 13,968,402 km (0.116 R)
• M17: 14,398,945 km (0.091 R)
• M18: 15,437,902 km (0.084 R)
• M19: 15,743,680 km (0.101 R)
• M20: 16,288,515 km (0.056 R)
• M21: 17,415,735 km (0.066 R)
• M22: 18,939,988 km (0.094 R)
• M23: 19,645,192 km (0.12 R)
• M24: 20,551,007 km (0.073 R)
• M25: 21,295,406 km (0.087 R)
• M26: 28,249,314 km (0.11 R)
• M27: 28,706,635 km (0.04 R)
• M28: 36,846,404 km (0.109 R)
• M29: 37,943,406 km (0.12 R)
• M30: 38,221,059 km (0.085 R)
• M31: 39,203,468 km (0.069 R)
• M32: 44,062,258 km (0.119 R)
• M33: 47,354,308 km (0.09 R)
• M34: 50,806,578 km (0.073 R)
• M35: 50,975,026 km (0.11 R)
• M36: 52,679,993 km (0.085 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 140.1

Radius: 6.8

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 9.99 AU - 10.43 AU

Year: 20743 Days

Day: 15.1 Hours

Environment

Temp: -231 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 45,933,609 km

• M1: 326,123 km (0.113 R)
• M2: 997,070 km (0.108 R)
• M3: 1,237,773 km (0.083 R)
• M4: 1,777,522 km (0.053 R)
• M5: 2,101,401 km (0.118 R)
• M6: 2,996,894 km (0.114 R)
• M7: 3,604,261 km (0.12 R)
• M8: 4,576,498 km (0.114 R)
• M9: 4,814,359 km (0.097 R)
• M10: 7,965,039 km (0.028 R)
• M11: 9,405,517 km (0.11 R)
• M12: 9,693,792 km (0.108 R)
• M13: 10,137,201 km (0.103 R)
• M14: 12,851,055 km (0.107 R)
• M15: 13,812,671 km (0.091 R)
• M16: 14,374,111 km (0.054 R)
• M17: 15,743,530 km (0.088 R)
• M18: 20,052,697 km (0.081 R)
• M19: 22,348,276 km (0.061 R)
• M20: 24,450,575 km (0.12 R)
• M21: 29,145,555 km (0.098 R)
• M22: 33,175,422 km (0.109 R)
• M23: 33,620,027 km (0.057 R)
• M24: 41,542,730 km (0.113 R)
• M25: 42,842,287 km (0.109 R)
• M26: 44,437,150 km (0.085 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 372 - 12,072 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit