🌌 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: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.47 AU - 0.57 AU

Year: 246 Days

Day: 13.6 Hours

Environment

Temp: -121 °C

Axial Tilt: 31.9 °

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: 2.75

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.45 AU - 0.65 AU

Year: 268 Days

Day: 18.8 Hours

Environment

Temp: -127 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 36,108,896 km

• M1: 115,789 km (0.109 R)
• M2: 558,449 km (0.06 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273.4

Radius: 9.2

Gravity: 3.23 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.68 AU - 0.76 AU

Year: 401 Days

Day: 9.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 36,108,896 km

• M1: 114,442 km (0.082 R)
• M2: 558,898 km (0.094 R)
• M3: 874,400 km (0.106 R)
• M4: 1,389,166 km (0.105 R)
• M5: 1,809,835 km (0.07 R)
• M6: 3,284,720 km (0.064 R)
• M7: 3,614,584 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 644.7

Radius: 13.6

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.57 AU - 0.87 AU

Year: 401 Days

Day: 7.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,108,896 km

• M1: 169,195 km (0.065 R)
• M2: 598,990 km (0.119 R)
• M3: 1,231,190 km (0.099 R)
• M4: 1,882,988 km (0.058 R)
• M5: 2,321,161 km (0.068 R)
• M6: 2,909,379 km (0.12 R)
• M7: 3,340,820 km (0.102 R)
• M8: 3,979,004 km (0.099 R)
• M9: 4,654,738 km (0.063 R)
• M10: 5,342,888 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 549.2

Radius: 9.9

Gravity: 5.6 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.73 AU - 1.77 AU

Year: 1519 Days

Day: 7.8 Hours

Environment

Temp: -192 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 36,108,896 km

• M1: 123,269 km (0.096 R)
• M2: 479,312 km (0.101 R)
• M3: 795,711 km (0.076 R)
• M4: 1,720,525 km (0.099 R)
• M5: 2,875,271 km (0.114 R)
• M6: 4,465,496 km (0.114 R)
• M7: 5,006,143 km (0.082 R)
• M8: 6,744,620 km (0.074 R)
• M9: 7,274,346 km (0.098 R)
• M10: 9,152,248 km (0.113 R)
• M11: 10,449,262 km (0.116 R)
• M12: 10,817,272 km (0.101 R)
• M13: 11,298,080 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 275.5

Radius: 13.5

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 3.06 AU - 3.74 AU

Year: 4113 Days

Day: 10.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 36,108,896 km

• M1: 167,849 km (0.08 R)
• M2: 598,391 km (0.119 R)
• M3: 1,428,211 km (0.084 R)
• M4: 2,578,319 km (0.117 R)
• M5: 3,239,542 km (0.114 R)
• M6: 3,894,481 km (0.118 R)
• M7: 4,316,347 km (0.099 R)
• M8: 5,520,012 km (0.045 R)
• M9: 6,054,824 km (0.074 R)
• M10: 6,907,831 km (0.086 R)
• M11: 7,933,773 km (0.114 R)
• M12: 9,623,930 km (0.031 R)
• M13: 10,063,150 km (0.117 R)
• M14: 10,669,619 km (0.045 R)
• M15: 13,075,003 km (0.11 R)
• M16: 14,262,960 km (0.055 R)
• M17: 15,571,343 km (0.111 R)
• M18: 16,280,587 km (0.113 R)
• M19: 17,011,372 km (0.056 R)
• M20: 17,818,453 km (0.04 R)
• M21: 19,277,630 km (0.052 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 959.2

Radius: 14.8

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 3.46 AU - 3.46 AU

Year: 4222 Days

Day: 10.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 36,108,896 km

• M1: 184,305 km (0.064 R)
• M2: 736,022 km (0.117 R)
• M3: 1,383,930 km (0.062 R)
• M4: 2,089,433 km (0.039 R)
• M5: 2,704,580 km (0.104 R)
• M6: 3,691,477 km (0.098 R)
• M7: 4,524,588 km (0.114 R)
• M8: 5,174,590 km (0.047 R)
• M9: 6,925,933 km (0.117 R)
• M10: 8,270,668 km (0.112 R)
• M11: 8,768,679 km (0.117 R)
• M12: 9,657,440 km (0.107 R)
• M13: 10,920,046 km (0.071 R)
• M14: 12,991,079 km (0.076 R)
• M15: 13,985,307 km (0.112 R)
• M16: 15,542,022 km (0.102 R)
• M17: 16,243,636 km (0.098 R)
• M18: 20,210,373 km (0.087 R)
• M19: 23,924,589 km (0.065 R)
• M20: 26,146,417 km (0.099 R)
• M21: 27,730,359 km (0.036 R)
• M22: 28,329,798 km (0.104 R)
• M23: 29,465,993 km (0.068 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 554.3

Radius: 13.5

Gravity: 3.04 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 4.52 AU - 5.42 AU

Year: 7268 Days

Day: 9.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 36,108,896 km

• M1: 167,849 km (0.094 R)
• M2: 664,663 km (0.076 R)
• M3: 1,099,993 km (0.099 R)
• M4: 2,218,985 km (0.096 R)
• M5: 2,985,824 km (0.036 R)
• M6: 3,643,456 km (0.119 R)
• M7: 5,733,488 km (0.071 R)
• M8: 7,180,399 km (0.092 R)
• M9: 9,857,153 km (0.102 R)
• M10: 15,330,491 km (0.097 R)
• M11: 16,512,314 km (0.049 R)
• M12: 17,158,277 km (0.101 R)
• M13: 20,130,039 km (0.03 R)
• M14: 24,245,626 km (0.094 R)
• M15: 24,828,011 km (0.056 R)
• M16: 27,162,785 km (0.081 R)
• M17: 28,798,488 km (0.088 R)
• M18: 33,480,153 km (0.081 R)
• M19: 34,098,890 km (0.081 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: 325 - 18,364 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit