🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.84

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.49 AU - 0.57 AU

Year: 249 Days

Day: 15.3 Hours

Environment

Temp: -127 °C

Axial Tilt: 49.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.11

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.55 AU - 0.59 AU

Year: 278 Days

Day: 18.4 Hours

Environment

Temp: -128 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 968.5

Radius: 14.4

Gravity: 4.67 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.66 AU - 0.76 AU

Year: 386 Days

Day: 5.1 Hours

Environment

Temp: -131 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 44,216,171 km

• M1: 179,069 km (0.053 R)
• M2: 637,287 km (0.059 R)
• M3: 1,301,950 km (0.098 R)
• M4: 1,894,956 km (0.118 R)
• M5: 2,872,130 km (0.095 R)
• M6: 3,433,870 km (0.107 R)
• M7: 3,922,606 km (0.111 R)
• M8: 4,515,612 km (0.103 R)
• M9: 5,026,488 km (0.116 R)
• M10: 5,575,961 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 960.8

Radius: 14.1

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.86 AU - 1.38 AU

Year: 765 Days

Day: 6.3 Hours

Environment

Temp: -168 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 44,216,171 km

• M1: 175,478 km (0.105 R)
• M2: 962,363 km (0.056 R)
• M3: 1,605,185 km (0.119 R)
• M4: 2,341,506 km (0.116 R)
• M5: 2,807,503 km (0.11 R)
• M6: 3,809,211 km (0.091 R)
• M7: 4,544,634 km (0.12 R)
• M8: 5,297,261 km (0.108 R)
• M9: 6,407,277 km (0.044 R)
• M10: 7,191,020 km (0.08 R)
• M11: 8,088,158 km (0.067 R)
• M12: 8,551,014 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 398.2

Radius: 9.1

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 1.95 AU - 2.87 AU

Year: 2416 Days

Day: 5.5 Hours

Environment

Temp: -198 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 44,216,171 km

• M1: 113,096 km (0.082 R)
• M2: 419,772 km (0.079 R)
• M3: 718,519 km (0.094 R)
• M4: 1,062,444 km (0.054 R)
• M5: 1,498,223 km (0.118 R)
• M6: 2,291,540 km (0.112 R)
• M7: 2,950,818 km (0.074 R)
• M8: 3,575,240 km (0.12 R)
• M9: 4,663,414 km (0.119 R)
• M10: 5,107,571 km (0.112 R)
• M11: 6,482,375 km (0.093 R)
• M12: 7,338,823 km (0.117 R)
• M13: 7,736,603 km (0.033 R)
• M14: 8,637,332 km (0.054 R)
• M15: 8,920,671 km (0.088 R)
• M16: 9,774,575 km (0.069 R)
• M17: 11,606,401 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 733.2

Radius: 15

Gravity: 3.26 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 4.22 AU - 5.96 AU

Year: 7415 Days

Day: 5 Hours

Environment

Temp: -209 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 44,216,171 km

• M1: 186,549 km (0.073 R)
• M2: 666,608 km (0.108 R)
• M3: 1,161,627 km (0.06 R)
• M4: 1,799,962 km (0.086 R)
• M5: 2,576,375 km (0.061 R)
• M6: 3,064,812 km (0.078 R)
• M7: 3,546,068 km (0.109 R)
• M8: 5,335,558 km (0.118 R)
• M9: 6,038,219 km (0.113 R)
• M10: 6,874,621 km (0.118 R)
• M11: 9,947,510 km (0.105 R)
• M12: 11,370,186 km (0.091 R)
• M13: 11,944,044 km (0.115 R)
• M14: 12,702,355 km (0.097 R)
• M15: 13,492,681 km (0.093 R)
• M16: 16,585,467 km (0.102 R)
• M17: 18,015,623 km (0.119 R)
• M18: 22,718,082 km (0.092 R)
• M19: 30,613,858 km (0.075 R)
• M20: 31,726,866 km (0.112 R)
• M21: 34,682,022 km (0.094 R)
• M22: 38,278,654 km (0.09 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 16.5

Radius: 7.5

Gravity: 0.29 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 6.95 AU - 7.97 AU

Year: 13156 Days

Day: 24 Hours

Environment

Temp: -216 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 44,216,171 km

• M1: 96,341 km (0.109 R)
• M2: 1,549,684 km (0.084 R)
• M3: 2,209,112 km (0.062 R)
• M4: 3,368,196 km (0.082 R)
• M5: 3,753,111 km (0.116 R)
• M6: 4,909,952 km (0.078 R)
• M7: 9,611,813 km (0.057 R)
• M8: 12,101,570 km (0.119 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 197.9

Radius: 4.8

Gravity: 8.59 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 8.43 AU - 8.91 AU

Year: 16483 Days

Day: 16.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 44,216,171 km

• M1: 60,438 km (0.057 R)
• M2: 353,051 km (0.09 R)
• M3: 872,156 km (0.115 R)
• M4: 1,275,920 km (0.108 R)
• M5: 1,575,565 km (0.096 R)
• M6: 2,154,359 km (0.087 R)
• M7: 2,678,999 km (0.047 R)
• M8: 3,193,017 km (0.114 R)
• M9: 3,473,363 km (0.097 R)
• M10: 3,950,880 km (0.089 R)
• M11: 5,415,293 km (0.054 R)
• M12: 7,247,119 km (0.113 R)
• M13: 8,194,223 km (0.115 R)
• M14: 9,082,536 km (0.058 R)
• M15: 10,330,930 km (0.083 R)
• M16: 10,996,042 km (0.105 R)
• M17: 11,206,376 km (0.114 R)
• M18: 12,298,441 km (0.085 R)
• M19: 12,986,741 km (0.084 R)
• M20: 13,700,323 km (0.087 R)
• M21: 14,502,466 km (0.116 R)
• M22: 14,692,007 km (0.093 R)
• M23: 15,730,665 km (0.099 R)
• M24: 16,065,016 km (0.094 R)
• M25: 16,541,037 km (0.033 R)
• M26: 20,693,574 km (0.091 R)
• M27: 21,583,532 km (0.064 R)
• M28: 23,613,276 km (0.078 R)
• M29: 28,638,418 km (0.088 R)
• M30: 29,438,767 km (0.116 R)
• M31: 34,108,614 km (0.08 R)
• M32: 34,668,559 km (0.096 R)
• M33: 34,894,302 km (0.12 R)
• M34: 36,153,168 km (0.102 R)
• M35: 39,248,797 km (0.108 R)
• M36: 40,360,159 km (0.117 R)
• M37: 41,365,457 km (0.05 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 469 - 14,989 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit