🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.07

Radius: 1.03

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.43 AU - 0.59 AU

Year: 235 Days

Day: 25.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 8.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.44 AU - 0.68 AU

Year: 271 Days

Day: 14.9 Hours

Environment

Temp: -126 °C

Axial Tilt: 28.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508.4

Radius: 14.4

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.63 AU - 0.93 AU

Year: 445 Days

Day: 9.8 Hours

Environment

Temp: -153 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 46,357,238 km

• M1: 179,069 km (0.118 R)
• M2: 655,987 km (0.063 R)
• M3: 1,139,487 km (0.109 R)
• M4: 1,872,666 km (0.1 R)
• M5: 2,519,527 km (0.099 R)
• M6: 2,989,564 km (0.116 R)
• M7: 3,483,985 km (0.084 R)
• M8: 4,045,874 km (0.079 R)
• M9: 4,639,778 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 908.7

Radius: 13.5

Gravity: 4.99 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.46 AU - 2.04 AU

Year: 1495 Days

Day: 14.6 Hours

Environment

Temp: -184 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 46,357,238 km

• M1: 170,841 km (0.114 R)
• M2: 604,824 km (0.109 R)
• M3: 1,366,726 km (0.105 R)
• M4: 2,206,419 km (0.084 R)
• M5: 2,970,565 km (0.068 R)
• M6: 4,214,172 km (0.118 R)
• M7: 5,803,201 km (0.069 R)
• M8: 8,019,942 km (0.054 R)
• M9: 8,860,532 km (0.118 R)
• M10: 10,612,024 km (0.027 R)
• M11: 11,110,933 km (0.074 R)
• M12: 11,737,898 km (0.101 R)
• M13: 14,355,262 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 390.4

Radius: 14.2

Gravity: 1.94 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 2.82 AU - 3.38 AU

Year: 3524 Days

Day: 7.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 46,357,238 km

• M1: 176,675 km (0.062 R)
• M2: 626,665 km (0.107 R)
• M3: 1,717,384 km (0.116 R)
• M4: 2,229,906 km (0.079 R)
• M5: 2,722,532 km (0.09 R)
• M6: 3,305,515 km (0.12 R)
• M7: 4,400,122 km (0.062 R)
• M8: 5,673,649 km (0.092 R)
• M9: 6,140,095 km (0.069 R)
• M10: 6,688,521 km (0.119 R)
• M11: 8,769,128 km (0.114 R)
• M12: 9,253,376 km (0.104 R)
• M13: 9,828,730 km (0.108 R)
• M14: 10,504,463 km (0.105 R)
• M15: 11,453,662 km (0.102 R)
• M16: 12,373,240 km (0.096 R)
• M17: 13,983,511 km (0.083 R)
• M18: 16,291,208 km (0.108 R)
• M19: 17,238,911 km (0.103 R)
• M20: 18,111,814 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.5

Radius: 14

Gravity: 0.1 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 2.54 AU - 4.02 AU

Year: 3836 Days

Day: 13.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 46,357,238 km

• M1: 198,068 km (0.098 R)
• M2: 753,824 km (0.12 R)
• M3: 1,587,533 km (0.045 R)
• M4: 2,325,648 km (0.11 R)
• M5: 3,063,914 km (0.094 R)
• M6: 3,541,879 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 937.8

Radius: 10.8

Gravity: 8.04 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 3.9 AU - 6.12 AU

Year: 7241 Days

Day: 5.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 46,357,238 km

• M1: 137,929 km (0.088 R)
• M2: 912,547 km (0.117 R)
• M3: 1,471,445 km (0.081 R)
• M4: 1,830,629 km (0.063 R)
• M5: 3,372,385 km (0.12 R)
• M6: 5,709,852 km (0.101 R)
• M7: 6,575,874 km (0.106 R)
• M8: 8,057,192 km (0.109 R)
• M9: 10,281,114 km (0.11 R)
• M10: 11,560,923 km (0.12 R)
• M11: 14,683,031 km (0.112 R)
• M12: 21,388,008 km (0.111 R)
• M13: 22,038,609 km (0.032 R)
• M14: 31,426,324 km (0.093 R)
• M15: 38,819,002 km (0.036 R)
• M16: 39,422,180 km (0.059 R)
• M17: 41,144,351 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 472.7

Radius: 5.9

Gravity: 13.58 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 5.9 AU - 7.7 AU

Year: 11449 Days

Day: 16.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 46,357,238 km

• M1: 78,838 km (0.076 R)
• M2: 400,922 km (0.108 R)
• M3: 586,573 km (0.111 R)
• M4: 831,764 km (0.084 R)
• M5: 1,323,044 km (0.095 R)
• M6: 2,144,037 km (0.114 R)
• M7: 2,514,142 km (0.118 R)
• M8: 2,861,358 km (0.111 R)
• M9: 3,478,001 km (0.095 R)
• M10: 3,778,992 km (0.089 R)
• M11: 4,637,534 km (0.092 R)
• M12: 5,552,026 km (0.091 R)
• M13: 8,377,032 km (0.12 R)
• M14: 8,872,351 km (0.062 R)
• M15: 9,197,726 km (0.117 R)
• M16: 9,676,140 km (0.104 R)
• M17: 10,682,634 km (0.091 R)
• M18: 11,265,019 km (0.08 R)
• M19: 15,015,138 km (0.086 R)
• M20: 15,477,246 km (0.101 R)
• M21: 16,429,736 km (0.087 R)
• M22: 16,849,807 km (0.05 R)
• M23: 19,521,325 km (0.113 R)
• M24: 20,957,465 km (0.052 R)
• M25: 25,780,051 km (0.027 R)
• M26: 27,310,587 km (0.119 R)
• M27: 33,589,808 km (0.08 R)
• M28: 34,493,679 km (0.057 R)
• M29: 36,467,772 km (0.115 R)
• M30: 37,663,508 km (0.099 R)
• M31: 38,638,886 km (0.098 R)
• M32: 40,259,330 km (0.104 R)
• M33: 42,577,200 km (0.105 R)
• M34: 44,846,599 km (0.071 R)
• M35: 45,392,033 km (0.043 R)
• M36: 46,080,034 km (0.079 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 328 - 16,496 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit