🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.7 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.6 AU - 0.8 AU

Year: 247 Days

Day: 33.4 Hours

Environment

Temp: 26 °C

Axial Tilt: 11.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.85

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.8 AU - 1.06 AU

Year: 378 Days

Day: 12.8 Hours

Environment

Temp: -44 °C

Axial Tilt: 23.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.34

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 2.3 AU - 2.84 AU

Year: 1738 Days

Day: 28.8 Hours

Environment

Temp: -129 °C

Axial Tilt: 38.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.35 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 4.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 52.1

Radius: 11.1

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 3.98 AU - 4.26 AU

Year: 3527 Days

Day: 5.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 69,677,799 km

• M1: 309,817 km (0.096 R)
• M2: 1,747,902 km (0.114 R)
• M3: 2,747,215 km (0.075 R)
• M4: 4,141,168 km (0.105 R)
• M5: 7,950,379 km (0.12 R)
• M6: 9,665,668 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 6.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 536.9

Radius: 14.3

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 6.36 AU - 6.88 AU

Year: 7184 Days

Day: 9.3 Hours

Environment

Temp: -189 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 69,677,799 km

• M1: 185,501 km (0.059 R)
• M2: 665,411 km (0.073 R)
• M3: 1,178,532 km (0.072 R)
• M4: 2,318,767 km (0.077 R)
• M5: 2,866,295 km (0.091 R)
• M6: 3,434,917 km (0.075 R)
• M7: 5,051,770 km (0.036 R)
• M8: 6,305,849 km (0.105 R)
• M9: 6,953,309 km (0.077 R)
• M10: 15,296,981 km (0.101 R)
• M11: 19,483,028 km (0.079 R)
• M12: 20,199,752 km (0.097 R)
• M13: 21,915,041 km (0.117 R)
• M14: 25,379,428 km (0.057 R)
• M15: 30,418,034 km (0.07 R)
• M16: 33,987,888 km (0.07 R)

Planet 6 - Ice Giant

Semi-Major Axis: 11.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 108.5

Radius: 4.3

Gravity: 5.87 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 9.83 AU - 13.27 AU

Year: 16555 Days

Day: 15.6 Hours

Environment

Temp: -195 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 69,677,799 km

• M1: 53,406 km (0.111 R)
• M2: 423,811 km (0.08 R)
• M3: 599,588 km (0.105 R)
• M4: 790,774 km (0.039 R)
• M5: 1,477,877 km (0.1 R)
• M6: 1,620,594 km (0.108 R)
• M7: 2,137,754 km (0.119 R)
• M8: 2,738,539 km (0.049 R)
• M9: 2,955,007 km (0.042 R)
• M10: 3,268,564 km (0.063 R)
• M11: 4,475,669 km (0.092 R)
• M12: 5,984,812 km (0.101 R)
• M13: 7,124,449 km (0.069 R)
• M14: 8,319,886 km (0.074 R)
• M15: 10,711,058 km (0.053 R)
• M16: 13,355,948 km (0.039 R)
• M17: 15,342,458 km (0.047 R)
• M18: 20,925,451 km (0.1 R)
• M19: 21,764,396 km (0.044 R)
• M20: 23,265,610 km (0.062 R)
• M21: 24,248,618 km (0.103 R)
• M22: 26,649,365 km (0.095 R)
• M23: 29,297,995 km (0.048 R)
• M24: 32,721,692 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 319.2

Radius: 7.3

Gravity: 5.99 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 10.54 AU - 13.56 AU

Year: 17642 Days

Day: 17.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 69,677,799 km

• M1: 90,806 km (0.063 R)
• M2: 325,375 km (0.112 R)
• M3: 585,227 km (0.05 R)
• M4: 820,993 km (0.116 R)
• M5: 1,384,678 km (0.099 R)
• M6: 2,055,026 km (0.049 R)
• M7: 2,373,520 km (0.113 R)
• M8: 3,962,249 km (0.089 R)
• M9: 5,536,916 km (0.119 R)
• M10: 5,969,404 km (0.09 R)
• M11: 7,489,318 km (0.104 R)
• M12: 7,750,965 km (0.084 R)
• M13: 8,431,785 km (0.085 R)
• M14: 10,121,942 km (0.112 R)
• M15: 11,443,040 km (0.099 R)
• M16: 13,699,275 km (0.076 R)
• M17: 15,734,106 km (0.094 R)
• M18: 18,431,804 km (0.043 R)
• M19: 18,829,286 km (0.094 R)
• M20: 25,499,705 km (0.067 R)
• M21: 31,174,102 km (0.106 R)
• M22: 39,709,259 km (0.115 R)
• M23: 41,043,073 km (0.035 R)
• M24: 42,131,548 km (0.05 R)
• M25: 44,223,823 km (0.07 R)

Planet 8 - Ice Giant

Semi-Major Axis: 12.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 557.5

Radius: 5.2

Gravity: 20.62 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 12.8 AU - 12.9 AU

Year: 19427 Days

Day: 24.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 69,677,799 km

• M1: 64,626 km (0.08 R)
• M2: 228,436 km (0.092 R)
• M3: 425,157 km (0.073 R)
• M4: 785,838 km (0.103 R)
• M5: 1,246,300 km (0.06 R)
• M6: 1,625,830 km (0.044 R)
• M7: 2,020,469 km (0.12 R)
• M8: 2,432,312 km (0.087 R)
• M9: 3,100,715 km (0.101 R)
• M10: 3,884,458 km (0.1 R)
• M11: 4,322,481 km (0.068 R)
• M12: 6,157,748 km (0.092 R)
• M13: 7,338,374 km (0.081 R)
• M14: 8,154,730 km (0.102 R)
• M15: 9,462,813 km (0.083 R)
• M16: 9,796,417 km (0.116 R)
• M17: 11,087,297 km (0.041 R)
• M18: 12,620,226 km (0.081 R)
• M19: 13,576,904 km (0.115 R)
• M20: 14,434,549 km (0.09 R)
• M21: 14,728,359 km (0.06 R)
• M22: 15,480,088 km (0.042 R)
• M23: 17,305,930 km (0.08 R)
• M24: 19,537,332 km (0.12 R)
• M25: 19,716,551 km (0.091 R)
• M26: 19,987,323 km (0.097 R)
• M27: 28,388,141 km (0.112 R)
• M28: 30,382,580 km (0.052 R)
• M29: 31,475,392 km (0.089 R)
• M30: 32,218,295 km (0.076 R)
• M31: 34,517,166 km (0.057 R)
• M32: 35,840,359 km (0.096 R)
• M33: 36,109,036 km (0.111 R)
• M34: 43,727,607 km (0.117 R)
• M35: 47,504,056 km (0.101 R)
• M36: 48,974,603 km (0.075 R)
• M37: 62,621,220 km (0.064 R)
• M38: 65,383,694 km (0.08 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 182 - 11,976 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit