🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.72 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.43

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.67 AU - 0.77 AU

Year: 213 Days

Day: 43.8 Hours

Environment

Temp: 176 °C

Axial Tilt: 1.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 77,498,563 km

• M1: 33,510 km (0.049 R)
• M2: 406,757 km (0.05 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.96

Radius: 0.98

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.82 AU - 0.88 AU

Year: 273 Days

Day: 47 Hours

Environment

Temp: 193 °C

Axial Tilt: 9.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.88 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.83

Radius: 1.52

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.71 AU - 1.05 AU

Year: 287 Days

Day: 17.1 Hours

Environment

Temp: 130 °C

Axial Tilt: 35.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 2.13 AU - 2.15 AU

Year: 1090 Days

Day: 31.9 Hours

Environment

Temp: -47 °C

Axial Tilt: 46.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 7.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 608.3

Radius: 12.2

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 6.12 AU - 8.24 AU

Year: 6700 Days

Day: 12.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 77,498,563 km

• M1: 154,684 km (0.038 R)
• M2: 590,313 km (0.048 R)
• M3: 1,053,468 km (0.095 R)
• M4: 2,033,783 km (0.102 R)
• M5: 2,467,916 km (0.091 R)
• M6: 3,143,799 km (0.103 R)
• M7: 4,437,821 km (0.068 R)
• M8: 5,806,641 km (0.089 R)
• M9: 6,189,163 km (0.073 R)
• M10: 7,476,453 km (0.087 R)
• M11: 8,242,843 km (0.109 R)
• M12: 9,665,219 km (0.096 R)
• M13: 10,621,898 km (0.119 R)
• M14: 11,050,795 km (0.098 R)
• M15: 14,676,000 km (0.071 R)
• M16: 18,818,963 km (0.11 R)
• M17: 19,236,790 km (0.077 R)
• M18: 21,269,676 km (0.114 R)
• M19: 22,260,612 km (0.073 R)
• M20: 23,763,921 km (0.091 R)
• M21: 25,081,579 km (0.075 R)
• M22: 29,794,510 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.7

Radius: 10.7

Gravity: 1.55 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 7.3 AU - 7.5 AU

Year: 7010 Days

Day: 9.7 Hours

Environment

Temp: -158 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 77,498,563 km

• M1: 148,850 km (0.03 R)
• M2: 637,437 km (0.117 R)
• M3: 1,774,530 km (0.073 R)
• M4: 2,407,927 km (0.03 R)
• M5: 3,168,184 km (0.087 R)
• M6: 3,545,470 km (0.102 R)
• M7: 5,878,598 km (0.119 R)
• M8: 8,221,899 km (0.076 R)
• M9: 10,376,408 km (0.109 R)
• M10: 11,000,829 km (0.098 R)
• M11: 15,023,366 km (0.088 R)
• M12: 18,451,850 km (0.103 R)
• M13: 20,637,924 km (0.033 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 853

Radius: 9.6

Gravity: 9.26 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 8.2 AU - 11.1 AU

Year: 10440 Days

Day: 8.6 Hours

Environment

Temp: -170 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 77,498,563 km

• M1: 119,379 km (0.037 R)
• M2: 494,122 km (0.08 R)
• M3: 879,187 km (0.112 R)
• M4: 1,208,601 km (0.071 R)
• M5: 2,127,880 km (0.103 R)
• M6: 3,001,980 km (0.113 R)
• M7: 3,849,452 km (0.092 R)
• M8: 4,184,103 km (0.044 R)
• M9: 5,477,676 km (0.104 R)
• M10: 6,085,641 km (0.045 R)
• M11: 6,738,187 km (0.062 R)
• M12: 10,344,094 km (0.098 R)
• M13: 10,829,091 km (0.078 R)
• M14: 15,550,848 km (0.098 R)
• M15: 17,363,077 km (0.055 R)
• M16: 19,070,737 km (0.09 R)
• M17: 23,732,057 km (0.085 R)
• M18: 24,766,675 km (0.108 R)
• M19: 29,959,816 km (0.118 R)
• M20: 32,066,752 km (0.086 R)
• M21: 32,637,169 km (0.072 R)
• M22: 35,591,577 km (0.114 R)
• M23: 39,107,127 km (0.042 R)
• M24: 39,496,979 km (0.118 R)
• M25: 40,020,871 km (0.06 R)
• M26: 40,682,243 km (0.074 R)
• M27: 51,652,405 km (0.103 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 330

Radius: 7.7

Gravity: 5.57 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 18.18 AU - 20.5 AU

Year: 29620 Days

Day: 23.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 77,498,563 km

• M1: 95,743 km (0.068 R)
• M2: 456,274 km (0.045 R)
• M3: 1,062,294 km (0.075 R)
• M4: 2,379,354 km (0.087 R)
• M5: 2,752,900 km (0.115 R)
• M6: 4,902,472 km (0.115 R)
• M7: 6,249,750 km (0.091 R)
• M8: 6,511,098 km (0.111 R)
• M9: 6,870,731 km (0.106 R)
• M10: 7,483,334 km (0.068 R)
• M11: 9,540,754 km (0.087 R)
• M12: 11,948,532 km (0.09 R)
• M13: 12,283,930 km (0.05 R)
• M14: 17,406,759 km (0.116 R)
• M15: 33,012,061 km (0.111 R)
• M16: 34,477,672 km (0.117 R)
• M17: 46,631,152 km (0.102 R)
• M18: 52,127,528 km (0.12 R)
• M19: 53,384,898 km (0.037 R)
• M20: 55,960,075 km (0.095 R)
• M21: 56,899,401 km (0.082 R)
• M22: 63,568,025 km (0.115 R)

Kuiper Belt

Range: 31.5 - 47.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 541 - 18,695 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit