🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.07

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.48 AU - 0.56 AU

Year: 144 Days

Day: 14.3 Hours

Environment

Temp: 145 °C

Axial Tilt: 8.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.75

Radius: 0.89

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.48 AU - 0.72 AU

Year: 178 Days

Day: 35.6 Hours

Environment

Temp: 128 °C

Axial Tilt: 45 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.02 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.63

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.84 AU - 1.2 AU

Year: 394 Days

Day: 32.5 Hours

Environment

Temp: 20 °C

Axial Tilt: 49.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 60,011,029 km

• M1: 137,032 km (0.115 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.74 AU - 2.44 AU

Year: 1157 Days

Day: 25 Hours

Environment

Temp: -79 °C

Axial Tilt: 8.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.41

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.9 AU - 2.94 AU

Year: 1441 Days

Day: 20.6 Hours

Environment

Temp: -95 °C

Axial Tilt: 17.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,011,029 km

• M1: 1,120,488 km (0.056 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.28

Radius: 1.1

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 2.54 AU - 2.58 AU

Year: 1568 Days

Day: 21 Hours

Environment

Temp: -100 °C

Axial Tilt: 20.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Ice Giant

Semi-Major Axis: 11.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 145.5

Radius: 5.7

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 10.38 AU - 12.98 AU

Year: 15284 Days

Day: 18 Hours

Environment

Temp: -190 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 60,011,029 km

• M1: 70,909 km (0.071 R)
• M2: 257,009 km (0.118 R)
• M3: 759,957 km (0.073 R)
• M4: 1,004,251 km (0.113 R)
• M5: 1,482,216 km (0.099 R)
• M6: 2,249,204 km (0.092 R)
• M7: 2,531,495 km (0.114 R)
• M8: 4,155,829 km (0.117 R)
• M9: 5,184,464 km (0.11 R)
• M10: 7,537,788 km (0.118 R)
• M11: 8,293,108 km (0.057 R)
• M12: 10,046,544 km (0.048 R)
• M13: 11,159,403 km (0.095 R)
• M14: 16,436,617 km (0.084 R)
• M15: 18,393,058 km (0.104 R)
• M16: 19,682,592 km (0.12 R)
• M17: 19,903,249 km (0.042 R)
• M18: 20,274,551 km (0.037 R)
• M19: 27,225,167 km (0.068 R)
• M20: 28,613,435 km (0.078 R)
• M21: 35,938,495 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 548.2

Radius: 4.2

Gravity: 31.08 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 11.17 AU - 17.07 AU

Year: 20315 Days

Day: 19.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 60,011,029 km

• M1: 52,359 km (0.045 R)
• M2: 741,557 km (0.083 R)
• M3: 1,026,092 km (0.076 R)
• M4: 1,263,055 km (0.115 R)
• M5: 2,955,904 km (0.083 R)
• M6: 3,665,297 km (0.09 R)
• M7: 4,283,585 km (0.082 R)
• M8: 5,113,704 km (0.092 R)
• M9: 6,338,013 km (0.114 R)
• M10: 6,595,770 km (0.082 R)
• M11: 6,815,829 km (0.044 R)
• M12: 7,648,790 km (0.07 R)
• M13: 8,089,654 km (0.105 R)
• M14: 8,968,692 km (0.084 R)
• M15: 9,293,469 km (0.046 R)
• M16: 10,081,999 km (0.038 R)
• M17: 11,599,221 km (0.029 R)
• M18: 12,849,560 km (0.099 R)
• M19: 15,077,820 km (0.046 R)
• M20: 15,229,811 km (0.086 R)
• M21: 17,634,747 km (0.118 R)
• M22: 18,489,549 km (0.059 R)
• M23: 19,104,097 km (0.088 R)
• M24: 20,005,424 km (0.11 R)
• M25: 27,235,040 km (0.083 R)
• M26: 27,801,268 km (0.078 R)
• M27: 29,192,379 km (0.1 R)
• M28: 29,428,594 km (0.102 R)
• M29: 32,364,153 km (0.085 R)
• M30: 33,642,916 km (0.095 R)
• M31: 48,828,296 km (0.07 R)
• M32: 59,867,871 km (0.058 R)
• M33: 68,221,416 km (0.096 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 257.4

Radius: 5.4

Gravity: 8.83 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 11.64 AU - 18.72 AU

Year: 22645 Days

Day: 23.1 Hours

Environment

Temp: -190 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 60,011,029 km

• M1: 68,665 km (0.063 R)
• M2: 375,640 km (0.107 R)
• M3: 550,969 km (0.083 R)
• M4: 773,271 km (0.046 R)
• M5: 975,977 km (0.033 R)
• M6: 1,774,231 km (0.113 R)
• M7: 2,056,372 km (0.07 R)
• M8: 2,621,703 km (0.079 R)
• M9: 4,512,919 km (0.119 R)
• M10: 5,716,434 km (0.044 R)
• M11: 6,738,935 km (0.091 R)
• M12: 7,425,590 km (0.064 R)
• M13: 8,158,021 km (0.105 R)
• M14: 9,038,105 km (0.114 R)
• M15: 9,448,901 km (0.064 R)
• M16: 16,129,194 km (0.109 R)
• M17: 17,906,566 km (0.095 R)
• M18: 20,767,027 km (0.11 R)
• M19: 21,301,540 km (0.09 R)
• M20: 21,845,179 km (0.117 R)
• M21: 22,865,885 km (0.049 R)
• M22: 23,724,427 km (0.088 R)
• M23: 25,810,569 km (0.05 R)
• M24: 27,800,819 km (0.119 R)
• M25: 29,442,507 km (0.099 R)
• M26: 30,801,603 km (0.079 R)
• M27: 32,083,657 km (0.092 R)
• M28: 33,766,184 km (0.116 R)
• M29: 37,045,669 km (0.051 R)
• M30: 37,831,506 km (0.046 R)
• M31: 41,365,457 km (0.098 R)
• M32: 44,229,059 km (0.119 R)
• M33: 44,669,625 km (0.083 R)
• M34: 49,238,344 km (0.099 R)
• M35: 53,441,595 km (0.074 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 151.6

Radius: 3.7

Gravity: 11.07 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 15.81 AU - 20.63 AU

Year: 29778 Days

Day: 19.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 52.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 60,011,029 km

• M1: 46,076 km (0.057 R)
• M2: 168,896 km (0.105 R)
• M3: 287,078 km (0.099 R)
• M4: 438,172 km (0.103 R)
• M5: 641,924 km (0.1 R)
• M6: 927,806 km (0.102 R)
• M7: 1,974,393 km (0.071 R)
• M8: 2,104,543 km (0.093 R)
• M9: 2,260,274 km (0.047 R)
• M10: 2,617,065 km (0.115 R)
• M11: 2,985,973 km (0.062 R)
• M12: 3,912,583 km (0.111 R)
• M13: 4,488,684 km (0.065 R)
• M14: 4,681,815 km (0.057 R)
• M15: 4,880,481 km (0.098 R)
• M16: 6,972,009 km (0.093 R)
• M17: 8,047,318 km (0.062 R)
• M18: 8,236,709 km (0.057 R)
• M19: 10,186,867 km (0.056 R)
• M20: 15,691,919 km (0.105 R)
• M21: 16,136,823 km (0.089 R)
• M22: 16,666,400 km (0.026 R)
• M23: 23,565,704 km (0.068 R)
• M24: 38,991,039 km (0.114 R)
• M25: 54,100,125 km (0.093 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 433 - 11,169 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit