🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.38

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.54 AU - 0.66 AU

Year: 305 Days

Day: 42.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 48.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 924

Radius: 13.4

Gravity: 5.15 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.68 AU - 0.68 AU

Year: 368 Days

Day: 14.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 90,687,208 km

• M1: 169,195 km (0.033 R)
• M2: 600,486 km (0.093 R)
• M3: 1,139,637 km (0.115 R)
• M4: 1,576,163 km (0.07 R)
• M5: 2,169,319 km (0.107 R)
• M6: 2,734,649 km (0.093 R)
• M7: 3,661,857 km (0.11 R)
• M8: 4,260,547 km (0.086 R)
• M9: 4,984,751 km (0.03 R)
• M10: 5,655,398 km (0.048 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 681.3

Radius: 13.2

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.64 AU - 0.76 AU

Year: 384 Days

Day: 8.6 Hours

Environment

Temp: -129 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 90,687,208 km

• M1: 164,408 km (0.083 R)
• M2: 593,156 km (0.115 R)
• M3: 1,243,757 km (0.079 R)
• M4: 1,915,002 km (0.078 R)
• M5: 2,375,465 km (0.03 R)
• M6: 2,839,068 km (0.088 R)
• M7: 3,478,150 km (0.051 R)
• M8: 3,939,361 km (0.118 R)
• M9: 4,971,436 km (0.095 R)
• M10: 5,431,899 km (0.064 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 432.7

Radius: 12.4

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.3 AU - 2.12 AU

Year: 1467 Days

Day: 7.2 Hours

Environment

Temp: -180 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 90,687,208 km

• M1: 159,322 km (0.114 R)
• M2: 574,755 km (0.078 R)
• M3: 1,274,275 km (0.051 R)
• M4: 1,796,521 km (0.094 R)
• M5: 3,003,028 km (0.112 R)
• M6: 3,472,915 km (0.052 R)
• M7: 5,509,540 km (0.1 R)
• M8: 8,244,787 km (0.095 R)
• M9: 9,349,119 km (0.049 R)
• M10: 10,390,320 km (0.099 R)
• M11: 11,439,300 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 716.9

Radius: 8.4

Gravity: 10.16 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 1.53 AU - 2.43 AU

Year: 1828 Days

Day: 14.4 Hours

Environment

Temp: -192 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 90,687,208 km

• M1: 104,419 km (0.054 R)
• M2: 424,708 km (0.091 R)
• M3: 836,850 km (0.066 R)
• M4: 1,169,706 km (0.107 R)
• M5: 1,513,781 km (0.066 R)
• M6: 1,783,506 km (0.055 R)
• M7: 2,194,152 km (0.108 R)
• M8: 2,694,706 km (0.072 R)
• M9: 3,018,137 km (0.062 R)
• M10: 3,534,998 km (0.032 R)
• M11: 4,380,076 km (0.11 R)
• M12: 4,829,019 km (0.106 R)
• M13: 5,444,615 km (0.074 R)
• M14: 7,295,589 km (0.111 R)
• M15: 7,868,250 km (0.118 R)
• M16: 8,165,800 km (0.083 R)
• M17: 10,180,883 km (0.04 R)
• M18: 10,570,137 km (0.115 R)
• M19: 11,191,417 km (0.077 R)
• M20: 13,326,777 km (0.117 R)
• M21: 13,835,858 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 889.4

Radius: 8.4

Gravity: 12.6 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 5.14 AU - 5.18 AU

Year: 7689 Days

Day: 11.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 90,687,208 km

• M1: 104,719 km (0.039 R)
• M2: 521,648 km (0.106 R)
• M3: 937,829 km (0.05 R)
• M4: 1,346,680 km (0.032 R)
• M5: 1,949,709 km (0.029 R)
• M6: 3,122,108 km (0.034 R)
• M7: 3,733,364 km (0.06 R)
• M8: 4,916,534 km (0.112 R)
• M9: 6,549,544 km (0.109 R)
• M10: 6,960,789 km (0.031 R)
• M11: 7,349,444 km (0.114 R)
• M12: 8,001,541 km (0.079 R)
• M13: 8,341,876 km (0.12 R)
• M14: 10,042,804 km (0.111 R)
• M15: 11,052,739 km (0.1 R)
• M16: 11,421,797 km (0.097 R)
• M17: 12,807,223 km (0.092 R)
• M18: 13,273,370 km (0.062 R)
• M19: 13,570,322 km (0.068 R)
• M20: 14,676,598 km (0.044 R)
• M21: 17,419,026 km (0.12 R)
• M22: 19,477,044 km (0.1 R)
• M23: 23,030,443 km (0.088 R)
• M24: 24,423,049 km (0.089 R)
• M25: 31,389,373 km (0.114 R)
• M26: 34,758,018 km (0.057 R)
• M27: 41,314,294 km (0.111 R)
• M28: 43,235,729 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 166.2

Radius: 9.7

Gravity: 1.77 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 5.02 AU - 6.3 AU

Year: 8834 Days

Day: 5.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 90,687,208 km

• M1: 121,773 km (0.069 R)
• M2: 445,353 km (0.047 R)
• M3: 853,157 km (0.113 R)
• M4: 2,391,771 km (0.093 R)
• M5: 2,947,527 km (0.103 R)
• M6: 4,340,433 km (0.089 R)
• M7: 7,856,431 km (0.071 R)
• M8: 8,510,922 km (0.091 R)
• M9: 9,845,784 km (0.119 R)
• M10: 11,634,974 km (0.111 R)
• M11: 16,712,925 km (0.074 R)
• M12: 17,550,373 km (0.096 R)
• M13: 19,115,018 km (0.103 R)
• M14: 20,163,998 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 818.8

Radius: 5.1

Gravity: 31.48 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 10.96 AU - 10.96 AU

Year: 23803 Days

Day: 16.5 Hours

Environment

Temp: -232 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 90,687,208 km

• M1: 104,868 km (0.057 R)
• M2: 388,057 km (0.049 R)
• M3: 557,551 km (0.119 R)
• M4: 939,175 km (0.117 R)
• M5: 1,239,568 km (0.103 R)
• M6: 1,927,569 km (0.088 R)
• M7: 2,366,339 km (0.035 R)
• M8: 2,737,192 km (0.107 R)
• M9: 2,977,596 km (0.116 R)
• M10: 5,397,940 km (0.1 R)
• M11: 5,648,516 km (0.086 R)
• M12: 9,775,772 km (0.049 R)
• M13: 10,148,420 km (0.096 R)
• M14: 10,988,412 km (0.029 R)
• M15: 12,879,479 km (0.094 R)
• M16: 13,862,935 km (0.101 R)
• M17: 15,978,399 km (0.04 R)
• M18: 16,149,539 km (0.111 R)
• M19: 19,443,086 km (0.077 R)
• M20: 19,736,148 km (0.116 R)
• M21: 20,431,628 km (0.092 R)
• M22: 20,836,291 km (0.106 R)
• M23: 26,594,013 km (0.117 R)
• M24: 27,319,713 km (0.082 R)
• M25: 27,934,560 km (0.114 R)
• M26: 29,834,154 km (0.106 R)
• M27: 31,414,506 km (0.111 R)
• M28: 32,911,532 km (0.058 R)
• M29: 36,935,415 km (0.111 R)
• M30: 39,688,315 km (0.077 R)
• M31: 40,476,546 km (0.046 R)
• M32: 41,114,581 km (0.092 R)
• M33: 43,400,736 km (0.093 R)
• M34: 44,575,079 km (0.077 R)
• M35: 46,811,717 km (0.081 R)
• M36: 52,823,008 km (0.031 R)
• M37: 54,547,423 km (0.063 R)
• M38: 59,328,870 km (0.071 R)
• M39: 66,790,961 km (0.075 R)
• M40: 67,012,965 km (0.033 R)
• M41: 69,486,715 km (0.119 R)
• M42: 71,092,349 km (0.092 R)
• M43: 71,323,627 km (0.042 R)
• M44: 73,428,619 km (0.119 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 326 - 12,643 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit