🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.79

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.47 AU - 0.73 AU

Year: 300 Days

Day: 39.4 Hours

Environment

Temp: -135 °C

Axial Tilt: 45.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 22,432,004 km

• M1: 253,718 km (0.07 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.85

Radius: 1.28

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.55 AU - 0.79 AU

Year: 354 Days

Day: 21.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 47.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842.3

Radius: 13.8

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.61 AU - 0.77 AU

Year: 370 Days

Day: 5.1 Hours

Environment

Temp: -131 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 22,432,004 km

• M1: 171,589 km (0.12 R)
• M2: 854,802 km (0.104 R)
• M3: 1,628,373 km (0.07 R)
• M4: 2,413,014 km (0.075 R)
• M5: 3,078,575 km (0.053 R)
• M6: 3,788,865 km (0.082 R)
• M7: 4,367,211 km (0.086 R)
• M8: 5,345,730 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 692.1

Radius: 9.1

Gravity: 8.36 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.6 AU - 0.88 AU

Year: 411 Days

Day: 9.7 Hours

Environment

Temp: -136 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 22,432,004 km

• M1: 113,246 km (0.119 R)
• M2: 464,501 km (0.108 R)
• M3: 893,698 km (0.077 R)
• M4: 1,634,058 km (0.096 R)
• M5: 1,933,852 km (0.118 R)
• M6: 2,217,788 km (0.064 R)
• M7: 2,627,088 km (0.072 R)
• M8: 2,945,283 km (0.118 R)
• M9: 3,382,258 km (0.083 R)
• M10: 3,965,989 km (0.108 R)
• M11: 5,495,927 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 678

Radius: 8.6

Gravity: 9.17 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.73 AU - 0.79 AU

Year: 428 Days

Day: 9.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 22,432,004 km

• M1: 106,962 km (0.111 R)
• M2: 629,657 km (0.107 R)
• M3: 908,807 km (0.089 R)
• M4: 1,261,260 km (0.109 R)
• M5: 1,575,714 km (0.074 R)
• M6: 2,177,397 km (0.12 R)
• M7: 2,595,224 km (0.12 R)
• M8: 2,871,082 km (0.101 R)
• M9: 3,679,509 km (0.045 R)
• M10: 4,002,641 km (0.102 R)
• M11: 4,472,378 km (0.112 R)
• M12: 4,932,242 km (0.12 R)
• M13: 5,229,642 km (0.062 R)
• M14: 5,638,942 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.6

Radius: 14.8

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.66 AU - 2.24 AU

Year: 1758 Days

Day: 10.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 22,432,004 km

• M1: 184,005 km (0.064 R)
• M2: 670,797 km (0.118 R)
• M3: 1,258,118 km (0.099 R)
• M4: 1,725,761 km (0.087 R)
• M5: 2,399,550 km (0.099 R)
• M6: 3,308,656 km (0.1 R)
• M7: 3,791,558 km (0.111 R)
• M8: 4,360,180 km (0.091 R)
• M9: 4,985,648 km (0.118 R)
• M10: 5,976,285 km (0.082 R)
• M11: 6,621,052 km (0.108 R)
• M12: 7,229,915 km (0.1 R)
• M13: 7,847,156 km (0.078 R)
• M14: 9,028,082 km (0.071 R)
• M15: 9,611,813 km (0.089 R)
• M16: 13,617,894 km (0.046 R)
• M17: 14,213,742 km (0.089 R)
• M18: 14,738,083 km (0.085 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 461

Radius: 9.2

Gravity: 5.45 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.85 AU - 2.23 AU

Year: 1881 Days

Day: 12.3 Hours

Environment

Temp: -189 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 22,432,004 km

• M1: 114,442 km (0.101 R)
• M2: 680,970 km (0.057 R)
• M3: 1,255,874 km (0.085 R)
• M4: 1,608,177 km (0.067 R)
• M5: 2,162,138 km (0.103 R)
• M6: 2,452,507 km (0.092 R)
• M7: 2,880,806 km (0.091 R)
• M8: 3,173,270 km (0.119 R)
• M9: 3,567,012 km (0.077 R)
• M10: 3,922,755 km (0.088 R)
• M11: 4,302,136 km (0.104 R)
• M12: 5,884,432 km (0.106 R)
• M13: 6,407,277 km (0.03 R)
• M14: 7,196,106 km (0.067 R)
• M15: 7,850,298 km (0.029 R)
• M16: 9,214,331 km (0.091 R)
• M17: 9,659,086 km (0.08 R)
• M18: 10,218,582 km (0.076 R)
• M19: 11,294,041 km (0.087 R)
• M20: 13,385,269 km (0.104 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 22.8

Radius: 9.8

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 1.99 AU - 2.37 AU

Year: 2078 Days

Day: 7.9 Hours

Environment

Temp: -197 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 22,432,004 km

• M1: 123,418 km (0.092 R)
• M2: 594,203 km (0.055 R)
• M3: 1,488,648 km (0.087 R)
• M4: 3,664,400 km (0.115 R)
• M5: 4,375,289 km (0.078 R)

Asteroid Belt

Center: 2.49 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 457.6

Radius: 14.9

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 2.53 AU - 3.07 AU

Year: 3025 Days

Day: 12.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 22,432,004 km

• M1: 185,352 km (0.074 R)
• M2: 650,751 km (0.101 R)
• M3: 1,252,284 km (0.079 R)
• M4: 2,398,503 km (0.052 R)
• M5: 3,145,894 km (0.092 R)
• M6: 3,702,846 km (0.049 R)
• M7: 4,305,277 km (0.119 R)
• M8: 4,882,874 km (0.078 R)
• M9: 5,439,528 km (0.115 R)
• M10: 6,300,913 km (0.031 R)
• M11: 7,077,176 km (0.102 R)
• M12: 8,136,628 km (0.083 R)
• M13: 9,369,015 km (0.077 R)
• M14: 10,608,135 km (0.09 R)
• M15: 11,506,619 km (0.103 R)
• M16: 12,036,495 km (0.109 R)
• M17: 13,189,595 km (0.092 R)

Planet 10 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 523.7

Radius: 8.4

Gravity: 7.42 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 3.13 AU - 3.23 AU

Year: 3661 Days

Day: 7.8 Hours

Environment

Temp: -202 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 22,432,004 km

• M1: 106,214 km (0.106 R)
• M2: 394,190 km (0.099 R)
• M3: 666,159 km (0.118 R)
• M4: 1,146,219 km (0.067 R)
• M5: 1,892,114 km (0.034 R)
• M6: 2,543,014 km (0.091 R)
• M7: 2,895,467 km (0.091 R)
• M8: 3,447,333 km (0.105 R)
• M9: 3,819,234 km (0.056 R)
• M10: 4,088,959 km (0.086 R)
• M11: 4,551,515 km (0.075 R)
• M12: 5,222,462 km (0.115 R)
• M13: 6,321,408 km (0.107 R)
• M14: 7,187,131 km (0.075 R)
• M15: 7,828,606 km (0.103 R)
• M16: 8,129,597 km (0.043 R)
• M17: 8,790,221 km (0.088 R)
• M18: 9,373,952 km (0.062 R)
• M19: 10,578,215 km (0.082 R)
• M20: 11,070,990 km (0.108 R)
• M21: 11,795,343 km (0.085 R)
• M22: 14,010,888 km (0.062 R)
• M23: 15,320,019 km (0.11 R)
• M24: 19,673,766 km (0.047 R)
• M25: 21,377,386 km (0.058 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 390 - 11,912 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit