🌌 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: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.47 AU - 0.57 AU

Year: 242 Days

Day: 22.6 Hours

Environment

Temp: -114 °C

Axial Tilt: 28.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 25,880,518 km

• M1: 200,162 km (0.066 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.37

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 0.5 AU - 0.74 AU

Year: 315 Days

Day: 23.8 Hours

Environment

Temp: -140 °C

Axial Tilt: 10.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 25,880,518 km

• M1: 181,313 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 829.6

Radius: 14

Gravity: 4.23 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.72 AU - 0.96 AU

Year: 497 Days

Day: 9 Hours

Environment

Temp: -149 °C

Axial Tilt: 127 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 25,880,518 km

• M1: 174,132 km (0.108 R)
• M2: 694,583 km (0.082 R)
• M3: 1,159,683 km (0.04 R)
• M4: 1,621,192 km (0.084 R)
• M5: 2,154,209 km (0.117 R)
• M6: 3,118,218 km (0.087 R)
• M7: 3,805,770 km (0.098 R)
• M8: 4,353,148 km (0.086 R)
• M9: 5,198,077 km (0.062 R)
• M10: 5,766,699 km (0.118 R)
• M11: 6,395,758 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 234.9

Radius: 11.8

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.68 AU - 1.7 AU

Year: 1419 Days

Day: 9.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 25,880,518 km

• M1: 146,905 km (0.072 R)
• M2: 597,943 km (0.108 R)
• M3: 998,117 km (0.045 R)
• M4: 1,568,534 km (0.068 R)
• M5: 2,135,061 km (0.119 R)
• M6: 3,253,006 km (0.054 R)
• M7: 3,726,483 km (0.086 R)
• M8: 4,424,058 km (0.11 R)
• M9: 4,918,479 km (0.099 R)
• M10: 6,018,622 km (0.092 R)
• M11: 6,391,569 km (0.105 R)
• M12: 6,846,197 km (0.085 R)
• M13: 8,341,428 km (0.054 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 924.9

Radius: 8.3

Gravity: 13.43 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 1.87 AU - 2.37 AU

Year: 1993 Days

Day: 8.4 Hours

Environment

Temp: -199 °C

Axial Tilt: 64.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 25,880,518 km

• M1: 103,372 km (0.062 R)
• M2: 387,458 km (0.069 R)
• M3: 791,074 km (0.111 R)
• M4: 1,314,965 km (0.069 R)
• M5: 1,623,885 km (0.037 R)
• M6: 1,887,177 km (0.064 R)
• M7: 2,322,956 km (0.042 R)
• M8: 3,396,769 km (0.102 R)
• M9: 4,407,452 km (0.071 R)
• M10: 5,223,658 km (0.093 R)
• M11: 5,533,176 km (0.05 R)
• M12: 6,867,739 km (0.105 R)
• M13: 8,897,633 km (0.097 R)
• M14: 9,168,255 km (0.076 R)
• M15: 9,584,436 km (0.12 R)
• M16: 10,158,892 km (0.118 R)
• M17: 10,908,976 km (0.039 R)
• M18: 12,902,368 km (0.112 R)
• M19: 15,270,951 km (0.064 R)
• M20: 17,227,541 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 212.4

Radius: 13.8

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.79 AU - 2.67 AU

Year: 2150 Days

Day: 6 Hours

Environment

Temp: -183 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 25,880,518 km

• M1: 171,738 km (0.119 R)
• M2: 706,850 km (0.106 R)
• M3: 1,317,658 km (0.094 R)
• M4: 1,889,272 km (0.119 R)
• M5: 2,375,465 km (0.12 R)
• M6: 3,395,423 km (0.091 R)
• M7: 4,022,986 km (0.12 R)
• M8: 4,839,342 km (0.11 R)
• M9: 5,409,160 km (0.103 R)
• M10: 5,849,426 km (0.063 R)
• M11: 6,497,185 km (0.099 R)
• M12: 8,731,729 km (0.037 R)
• M13: 10,038,915 km (0.071 R)
• M14: 10,707,019 km (0.073 R)
• M15: 11,575,285 km (0.105 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 859.8

Radius: 14.6

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 2.64 AU - 3.58 AU

Year: 3541 Days

Day: 7.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 25,880,518 km

• M1: 183,856 km (0.109 R)
• M2: 1,000,211 km (0.086 R)
• M3: 1,558,660 km (0.104 R)
• M4: 2,018,374 km (0.113 R)
• M5: 2,523,417 km (0.12 R)
• M6: 3,023,672 km (0.103 R)
• M7: 4,072,952 km (0.045 R)
• M8: 4,694,680 km (0.115 R)
• M9: 5,540,507 km (0.064 R)
• M10: 7,671,080 km (0.112 R)
• M11: 8,155,627 km (0.058 R)
• M12: 11,023,269 km (0.07 R)
• M13: 12,997,063 km (0.066 R)
• M14: 13,637,641 km (0.048 R)
• M15: 14,351,073 km (0.112 R)
• M16: 15,143,044 km (0.06 R)
• M17: 16,300,483 km (0.111 R)
• M18: 18,978,584 km (0.101 R)
• M19: 21,458,618 km (0.09 R)
• M20: 24,000,884 km (0.117 R)
• M21: 25,803,538 km (0.083 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: 379 - 14,478 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit