🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.58

Radius: 1.67

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.5 AU - 0.82 AU

Year: 352 Days

Day: 33.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 176.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811

Radius: 9.9

Gravity: 8.27 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.71 AU - 0.75 AU

Year: 409 Days

Day: 9.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 88,304,734 km

• M1: 123,269 km (0.086 R)
• M2: 434,133 km (0.113 R)
• M3: 816,954 km (0.076 R)
• M4: 1,365,529 km (0.075 R)
• M5: 2,641,300 km (0.079 R)
• M6: 3,257,494 km (0.045 R)
• M7: 3,874,585 km (0.081 R)
• M8: 4,821,390 km (0.062 R)
• M9: 5,324,936 km (0.111 R)
• M10: 5,794,075 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 587.5

Radius: 14.7

Gravity: 2.72 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.04 AU - 1.1 AU

Year: 726 Days

Day: 14.6 Hours

Environment

Temp: -166 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 88,304,734 km

• M1: 183,407 km (0.063 R)
• M2: 936,483 km (0.038 R)
• M3: 2,260,573 km (0.115 R)
• M4: 3,013,200 km (0.07 R)
• M5: 3,829,257 km (0.114 R)
• M6: 5,604,983 km (0.089 R)
• M7: 6,095,216 km (0.092 R)
• M8: 6,842,756 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.8

Radius: 14.6

Gravity: 3.57 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 2.53 AU - 2.73 AU

Year: 2798 Days

Day: 14 Hours

Environment

Temp: -204 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 88,304,734 km

• M1: 184,903 km (0.104 R)
• M2: 839,543 km (0.066 R)
• M3: 1,364,333 km (0.076 R)
• M4: 2,024,358 km (0.11 R)
• M5: 2,495,442 km (0.068 R)
• M6: 3,074,087 km (0.065 R)
• M7: 3,646,299 km (0.041 R)
• M8: 4,638,731 km (0.116 R)
• M9: 5,831,026 km (0.076 R)
• M10: 9,718,476 km (0.075 R)
• M11: 10,327,040 km (0.117 R)
• M12: 10,800,069 km (0.079 R)
• M13: 12,526,877 km (0.102 R)
• M14: 13,950,001 km (0.054 R)
• M15: 15,890,585 km (0.101 R)
• M16: 17,390,752 km (0.113 R)
• M17: 18,866,685 km (0.086 R)
• M18: 21,109,157 km (0.025 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 121.1

Radius: 9.2

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 3.14 AU - 5.06 AU

Year: 5446 Days

Day: 9.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 88,304,734 km

• M1: 114,442 km (0.096 R)
• M2: 403,166 km (0.036 R)
• M3: 698,622 km (0.059 R)
• M4: 1,054,515 km (0.068 R)
• M5: 1,416,393 km (0.102 R)
• M6: 2,073,576 km (0.028 R)
• M7: 2,620,955 km (0.094 R)
• M8: 3,261,832 km (0.117 R)
• M9: 5,010,033 km (0.083 R)
• M10: 5,869,323 km (0.102 R)
• M11: 6,414,158 km (0.079 R)
• M12: 6,712,756 km (0.087 R)
• M13: 7,308,903 km (0.052 R)
• M14: 7,816,788 km (0.043 R)
• M15: 8,803,835 km (0.073 R)
• M16: 9,105,274 km (0.03 R)
• M17: 16,636,929 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 574.6

Radius: 10.2

Gravity: 5.52 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 4.68 AU - 5.02 AU

Year: 7007 Days

Day: 11.7 Hours

Environment

Temp: -226 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 88,304,734 km

• M1: 126,859 km (0.108 R)
• M2: 788,082 km (0.099 R)
• M3: 1,313,170 km (0.098 R)
• M4: 2,283,761 km (0.12 R)
• M5: 2,854,776 km (0.083 R)
• M6: 4,056,795 km (0.072 R)
• M7: 5,537,964 km (0.1 R)
• M8: 6,468,163 km (0.087 R)
• M9: 7,687,835 km (0.106 R)
• M10: 10,343,047 km (0.095 R)
• M11: 11,749,866 km (0.084 R)
• M12: 12,159,315 km (0.097 R)
• M13: 15,480,986 km (0.062 R)
• M14: 18,872,220 km (0.067 R)
• M15: 20,592,596 km (0.112 R)
• M16: 22,104,282 km (0.107 R)
• M17: 24,096,327 km (0.071 R)
• M18: 25,009,622 km (0.106 R)
• M19: 27,707,620 km (0.099 R)
• M20: 28,987,280 km (0.117 R)
• M21: 32,458,699 km (0.061 R)
• M22: 33,572,305 km (0.043 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 383.7

Radius: 12.7

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 5.06 AU - 5.16 AU

Year: 7578 Days

Day: 13.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 88,304,734 km

• M1: 158,275 km (0.106 R)
• M2: 971,638 km (0.072 R)
• M3: 1,583,493 km (0.075 R)
• M4: 3,705,240 km (0.07 R)
• M5: 6,306,897 km (0.037 R)
• M6: 7,182,493 km (0.103 R)
• M7: 11,905,298 km (0.072 R)
• M8: 12,872,598 km (0.117 R)
• M9: 15,312,988 km (0.111 R)
• M10: 17,271,523 km (0.06 R)
• M11: 17,721,214 km (0.036 R)
• M12: 18,577,213 km (0.089 R)
• M13: 22,659,739 km (0.08 R)
• M14: 24,383,855 km (0.04 R)
• M15: 31,679,294 km (0.059 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 445.1

Radius: 3.7

Gravity: 32.51 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 5 AU - 7.54 AU

Year: 10299 Days

Day: 23.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 2.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 88,304,734 km

• M1: 46,675 km (0.057 R)
• M2: 345,421 km (0.046 R)
• M3: 587,920 km (0.093 R)
• M4: 1,418,936 km (0.084 R)
• M5: 2,223,324 km (0.093 R)
• M6: 2,732,704 km (0.07 R)
• M7: 3,432,224 km (0.061 R)
• M8: 4,030,017 km (0.084 R)
• M9: 5,623,534 km (0.106 R)
• M10: 7,044,564 km (0.051 R)
• M11: 8,170,886 km (0.109 R)
• M12: 9,932,251 km (0.116 R)
• M13: 11,395,319 km (0.073 R)
• M14: 11,877,024 km (0.098 R)
• M15: 12,205,690 km (0.053 R)
• M16: 23,026,553 km (0.034 R)
• M17: 25,564,780 km (0.115 R)
• M18: 29,662,266 km (0.051 R)
• M19: 32,023,668 km (0.112 R)
• M20: 35,063,647 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 768.5

Radius: 4.2

Gravity: 43.57 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 10.16 AU - 11.64 AU

Year: 23607 Days

Day: 24.7 Hours

Environment

Temp: -230 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 88,304,734 km

• M1: 53,556 km (0.075 R)
• M2: 1,398,291 km (0.071 R)
• M3: 1,567,786 km (0.109 R)
• M4: 8,698,518 km (0.112 R)
• M5: 8,925,607 km (0.114 R)
• M6: 9,156,437 km (0.116 R)
• M7: 13,566,433 km (0.098 R)
• M8: 17,902,377 km (0.069 R)
• M9: 18,177,488 km (0.118 R)
• M10: 20,480,547 km (0.105 R)
• M11: 23,404,736 km (0.037 R)
• M12: 23,623,598 km (0.113 R)
• M13: 25,424,457 km (0.04 R)
• M14: 27,801,717 km (0.117 R)
• M15: 33,544,331 km (0.04 R)
• M16: 57,368,839 km (0.111 R)
• M17: 65,249,954 km (0.114 R)
• M18: 80,100,684 km (0.102 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 427 - 15,107 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit