🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.97

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.48 AU - 0.56 AU

Year: 242 Days

Day: 26.2 Hours

Environment

Temp: -126 °C

Axial Tilt: 24.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 66.1

Radius: 10

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.63 AU - 0.89 AU

Year: 428 Days

Day: 13.3 Hours

Environment

Temp: -140 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 49,410,240 km

• M1: 124,914 km (0.085 R)
• M2: 562,787 km (0.094 R)
• M3: 970,591 km (0.033 R)
• M4: 1,418,038 km (0.114 R)
• M5: 1,830,928 km (0.079 R)
• M6: 2,275,234 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 491

Radius: 14.8

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.05 AU - 1.07 AU

Year: 705 Days

Day: 8 Hours

Environment

Temp: -154 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 49,410,240 km

• M1: 184,005 km (0.077 R)
• M2: 731,683 km (0.069 R)
• M3: 1,258,268 km (0.106 R)
• M4: 1,959,433 km (0.044 R)
• M5: 3,086,802 km (0.116 R)
• M6: 3,728,278 km (0.076 R)
• M7: 5,350,368 km (0.088 R)
• M8: 6,015,630 km (0.112 R)
• M9: 6,675,207 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 853

Radius: 10

Gravity: 8.53 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 1.04 AU - 1.14 AU

Year: 735 Days

Day: 12.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 49,410,240 km

• M1: 125,961 km (0.097 R)
• M2: 447,896 km (0.057 R)
• M3: 799,601 km (0.073 R)
• M4: 1,129,763 km (0.099 R)
• M5: 2,474,349 km (0.063 R)
• M6: 3,264,076 km (0.11 R)
• M7: 3,696,115 km (0.047 R)
• M8: 4,025,679 km (0.03 R)
• M9: 4,744,197 km (0.094 R)
• M10: 5,337,502 km (0.061 R)
• M11: 6,308,841 km (0.094 R)
• M12: 6,803,711 km (0.046 R)
• M13: 7,606,304 km (0.065 R)
• M14: 7,944,545 km (0.107 R)
• M15: 8,599,334 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.4

Radius: 13.7

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1.89 AU - 2.11 AU

Year: 1826 Days

Day: 10 Hours

Environment

Temp: -195 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 49,410,240 km

• M1: 171,140 km (0.114 R)
• M2: 826,678 km (0.114 R)
• M3: 1,400,236 km (0.078 R)
• M4: 2,911,175 km (0.054 R)
• M5: 3,485,182 km (0.076 R)
• M6: 4,329,662 km (0.081 R)
• M7: 5,676,342 km (0.091 R)
• M8: 7,098,868 km (0.068 R)
• M9: 7,868,998 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 901.3

Radius: 13.5

Gravity: 4.95 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 3.21 AU - 3.59 AU

Year: 4048 Days

Day: 8.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 49,410,240 km

• M1: 167,849 km (0.054 R)
• M2: 593,305 km (0.097 R)
• M3: 1,139,786 km (0.115 R)
• M4: 1,568,833 km (0.086 R)
• M5: 2,618,561 km (0.057 R)
• M6: 3,059,426 km (0.117 R)
• M7: 4,446,049 km (0.099 R)
• M8: 5,404,073 km (0.102 R)
• M9: 5,829,979 km (0.081 R)
• M10: 6,495,390 km (0.11 R)
• M11: 7,799,734 km (0.111 R)
• M12: 8,646,907 km (0.075 R)
• M13: 9,192,191 km (0.062 R)
• M14: 10,052,977 km (0.113 R)
• M15: 10,788,699 km (0.099 R)
• M16: 11,513,651 km (0.03 R)
• M17: 12,078,532 km (0.08 R)
• M18: 13,010,676 km (0.092 R)
• M19: 14,962,929 km (0.06 R)
• M20: 16,212,669 km (0.074 R)
• M21: 17,592,261 km (0.114 R)
• M22: 18,789,941 km (0.051 R)
• M23: 20,311,651 km (0.039 R)
• M24: 23,151,617 km (0.031 R)
• M25: 24,821,578 km (0.096 R)
• M26: 26,408,213 km (0.071 R)
• M27: 28,656,220 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313.2

Radius: 13.5

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 2.87 AU - 3.97 AU

Year: 4084 Days

Day: 12.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 44 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 49,410,240 km

• M1: 167,998 km (0.109 R)
• M2: 624,721 km (0.111 R)
• M3: 1,363,585 km (0.073 R)
• M4: 2,117,259 km (0.082 R)
• M5: 2,905,191 km (0.098 R)
• M6: 3,359,669 km (0.057 R)
• M7: 4,698,420 km (0.107 R)
• M8: 6,312,432 km (0.086 R)
• M9: 6,993,551 km (0.089 R)
• M10: 8,303,280 km (0.102 R)
• M11: 8,808,771 km (0.08 R)
• M12: 10,334,670 km (0.09 R)
• M13: 12,030,362 km (0.089 R)
• M14: 13,487,744 km (0.087 R)
• M15: 15,109,235 km (0.113 R)
• M16: 16,225,535 km (0.098 R)
• M17: 20,265,276 km (0.056 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 582.6

Radius: 4.9

Gravity: 24.26 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 6.2 AU - 7.32 AU

Year: 11348 Days

Day: 24.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 123.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 49,410,240 km

• M1: 62,682 km (0.097 R)
• M2: 290,818 km (0.101 R)
• M3: 531,072 km (0.099 R)
• M4: 841,338 km (0.046 R)
• M5: 1,662,930 km (0.118 R)
• M6: 2,122,794 km (0.082 R)
• M7: 2,811,842 km (0.1 R)
• M8: 3,172,223 km (0.041 R)
• M9: 4,618,086 km (0.076 R)
• M10: 4,770,975 km (0.072 R)
• M11: 6,119,301 km (0.07 R)
• M12: 9,689,604 km (0.098 R)
• M13: 10,667,226 km (0.103 R)
• M14: 11,708,876 km (0.097 R)
• M15: 13,551,024 km (0.112 R)
• M16: 16,272,658 km (0.1 R)
• M17: 17,574,758 km (0.104 R)
• M18: 18,711,702 km (0.04 R)
• M19: 20,963,598 km (0.048 R)
• M20: 22,678,439 km (0.061 R)
• M21: 23,210,558 km (0.118 R)
• M22: 24,024,371 km (0.09 R)
• M23: 28,176,310 km (0.066 R)
• M24: 28,688,084 km (0.087 R)
• M25: 31,231,398 km (0.034 R)
• M26: 31,779,524 km (0.101 R)
• M27: 37,989,631 km (0.099 R)
• M28: 39,499,822 km (0.077 R)
• M29: 42,105,069 km (0.117 R)
• M30: 43,722,072 km (0.094 R)
• M31: 48,527,305 km (0.075 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 317 - 20,277 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit