🌌 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: 4.16

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.53 AU - 0.53 AU

Year: 253 Days

Day: 22.2 Hours

Environment

Temp: -112 °C

Axial Tilt: 11.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.54

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.48 AU - 0.62 AU

Year: 268 Days

Day: 35 Hours

Environment

Temp: -123 °C

Axial Tilt: 18 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.62 AU - 0.72 AU

Year: 360 Days

Day: 16.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 27.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 732.3

Radius: 11

Gravity: 6.05 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.8 AU - 0.96 AU

Year: 542 Days

Day: 9.6 Hours

Environment

Temp: -148 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 61,707,985 km

• M1: 136,882 km (0.106 R)
• M2: 505,342 km (0.093 R)
• M3: 966,103 km (0.11 R)
• M4: 1,535,173 km (0.083 R)
• M5: 2,406,282 km (0.038 R)
• M6: 2,790,748 km (0.115 R)
• M7: 3,375,975 km (0.101 R)
• M8: 3,833,146 km (0.049 R)
• M9: 4,682,114 km (0.084 R)
• M10: 5,035,165 km (0.073 R)
• M11: 5,598,551 km (0.115 R)
• M12: 5,997,229 km (0.098 R)
• M13: 6,610,880 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 840.5

Radius: 9.3

Gravity: 9.72 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.08 AU - 1.16 AU

Year: 778 Days

Day: 5.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 61,707,985 km

• M1: 119,977 km (0.096 R)
• M2: 435,479 km (0.099 R)
• M3: 752,028 km (0.083 R)
• M4: 1,660,088 km (0.094 R)
• M5: 2,639,505 km (0.079 R)
• M6: 3,269,013 km (0.074 R)
• M7: 3,841,823 km (0.04 R)
• M8: 4,297,947 km (0.049 R)
• M9: 5,150,655 km (0.077 R)
• M10: 6,801,617 km (0.101 R)
• M11: 7,165,439 km (0.03 R)
• M12: 7,614,232 km (0.1 R)
• M13: 8,464,248 km (0.093 R)
• M14: 8,885,515 km (0.105 R)

Asteroid Belt

Center: 1.64 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 210.1

Radius: 13.5

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 1.7 AU - 2.62 AU

Year: 2083 Days

Day: 9.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 61,707,985 km

• M1: 167,849 km (0.096 R)
• M2: 647,609 km (0.108 R)
• M3: 1,082,640 km (0.036 R)
• M4: 1,643,482 km (0.105 R)
• M5: 2,186,074 km (0.086 R)
• M6: 2,808,850 km (0.04 R)
• M7: 4,574,553 km (0.093 R)
• M8: 5,896,849 km (0.116 R)
• M9: 7,309,801 km (0.109 R)
• M10: 7,871,391 km (0.113 R)
• M11: 10,005,704 km (0.037 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 211.9

Radius: 14.1

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 2.25 AU - 3.17 AU

Year: 2927 Days

Day: 11.6 Hours

Environment

Temp: -192 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 61,707,985 km

• M1: 175,478 km (0.096 R)
• M2: 696,528 km (0.078 R)
• M3: 1,274,275 km (0.099 R)
• M4: 1,876,855 km (0.105 R)
• M5: 2,761,876 km (0.112 R)
• M6: 3,410,682 km (0.078 R)
• M7: 3,857,979 km (0.049 R)
• M8: 4,401,469 km (0.068 R)
• M9: 4,995,821 km (0.101 R)
• M10: 8,304,178 km (0.076 R)
• M11: 9,121,581 km (0.069 R)
• M12: 10,917,054 km (0.114 R)
• M13: 11,675,366 km (0.107 R)
• M14: 12,353,194 km (0.056 R)
• M15: 12,977,615 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 119.5

Radius: 9.7

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 2.37 AU - 3.25 AU

Year: 3090 Days

Day: 9.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 61,707,985 km

• M1: 131,646 km (0.028 R)
• M2: 564,134 km (0.111 R)
• M3: 879,037 km (0.089 R)
• M4: 1,884,634 km (0.114 R)
• M5: 3,009,460 km (0.093 R)
• M6: 5,654,201 km (0.095 R)
• M7: 6,976,347 km (0.1 R)
• M8: 7,617,075 km (0.112 R)
• M9: 8,212,923 km (0.034 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 692.3

Radius: 14.1

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 4.24 AU - 5.58 AU

Year: 7137 Days

Day: 6.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 61,707,985 km

• M1: 175,478 km (0.119 R)
• M2: 628,610 km (0.085 R)
• M3: 1,137,243 km (0.119 R)
• M4: 1,759,421 km (0.079 R)
• M5: 2,659,701 km (0.112 R)
• M6: 3,111,037 km (0.1 R)
• M7: 3,660,062 km (0.051 R)
• M8: 4,120,374 km (0.041 R)
• M9: 4,592,355 km (0.11 R)
• M10: 5,398,838 km (0.106 R)
• M11: 5,868,575 km (0.077 R)
• M12: 6,642,445 km (0.036 R)
• M13: 7,294,691 km (0.041 R)
• M14: 7,831,299 km (0.079 R)
• M15: 9,027,334 km (0.098 R)
• M16: 10,106,383 km (0.089 R)
• M17: 13,978,425 km (0.058 R)
• M18: 14,568,140 km (0.07 R)
• M19: 17,028,875 km (0.09 R)
• M20: 18,815,971 km (0.075 R)
• M21: 20,423,251 km (0.111 R)
• M22: 25,444,503 km (0.113 R)
• M23: 26,772,633 km (0.037 R)
• M24: 28,239,740 km (0.08 R)
• M25: 31,233,791 km (0.116 R)
• M26: 32,243,278 km (0.078 R)
• M27: 33,692,881 km (0.084 R)
• M28: 34,969,549 km (0.117 R)
• M29: 38,416,883 km (0.093 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 948.9

Radius: 5.1

Gravity: 36.48 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 5.46 AU - 8.74 AU

Year: 12411 Days

Day: 15.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 61,707,985 km

• M1: 63,579 km (0.087 R)
• M2: 650,751 km (0.067 R)
• M3: 1,345,483 km (0.045 R)
• M4: 5,946,964 km (0.081 R)
• M5: 6,382,144 km (0.118 R)
• M6: 8,983,651 km (0.113 R)
• M7: 17,625,322 km (0.103 R)
• M8: 22,501,764 km (0.08 R)
• M9: 23,264,414 km (0.068 R)
• M10: 24,540,334 km (0.11 R)
• M11: 28,869,247 km (0.112 R)
• M12: 29,997,215 km (0.119 R)
• M13: 30,341,291 km (0.092 R)
• M14: 42,503,597 km (0.099 R)
• M15: 43,228,549 km (0.114 R)
• M16: 46,823,984 km (0.104 R)
• M17: 49,968,232 km (0.055 R)
• M18: 50,775,761 km (0.11 R)
• M19: 53,923,749 km (0.077 R)
• M20: 59,515,269 km (0.056 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 480 - 18,771 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit