🌌 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: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.21

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.54 AU - 0.76 AU

Year: 344 Days

Day: 39.6 Hours

Environment

Temp: -140 °C

Axial Tilt: 39.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 368.3

Radius: 13.9

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.68 AU - 0.76 AU

Year: 401 Days

Day: 13.3 Hours

Environment

Temp: -132 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 53,865,280 km

• M1: 172,935 km (0.116 R)
• M2: 692,788 km (0.099 R)
• M3: 1,250,189 km (0.113 R)
• M4: 2,249,054 km (0.114 R)
• M5: 3,035,042 km (0.065 R)
• M6: 3,728,278 km (0.025 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 621.7

Radius: 10.4

Gravity: 5.75 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.78 AU - 1.1 AU

Year: 598 Days

Day: 9.8 Hours

Environment

Temp: -146 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 53,865,280 km

• M1: 129,402 km (0.101 R)
• M2: 675,584 km (0.09 R)
• M3: 1,757,625 km (0.103 R)
• M4: 2,654,465 km (0.11 R)
• M5: 4,685,106 km (0.061 R)
• M6: 5,466,007 km (0.113 R)
• M7: 6,216,091 km (0.086 R)
• M8: 6,991,756 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 556.6

Radius: 9.7

Gravity: 5.92 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 2.82 AU - 3.02 AU

Year: 3273 Days

Day: 10.3 Hours

Environment

Temp: -196 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 53,865,280 km

• M1: 120,576 km (0.06 R)
• M2: 438,920 km (0.117 R)
• M3: 852,409 km (0.113 R)
• M4: 1,164,769 km (0.048 R)
• M5: 2,636,363 km (0.085 R)
• M6: 3,090,842 km (0.061 R)
• M7: 3,770,914 km (0.118 R)
• M8: 5,277,813 km (0.103 R)
• M9: 6,138,599 km (0.034 R)
• M10: 6,473,848 km (0.117 R)
• M11: 7,366,050 km (0.099 R)
• M12: 7,841,771 km (0.104 R)
• M13: 8,337,987 km (0.115 R)
• M14: 9,430,051 km (0.094 R)
• M15: 9,877,349 km (0.117 R)
• M16: 11,938,808 km (0.103 R)
• M17: 13,934,892 km (0.119 R)
• M18: 14,369,025 km (0.117 R)
• M19: 19,819,923 km (0.101 R)
• M20: 20,123,906 km (0.055 R)
• M21: 20,492,814 km (0.093 R)
• M22: 21,054,704 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 735.1

Radius: 14.1

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 2.81 AU - 3.25 AU

Year: 3460 Days

Day: 5.9 Hours

Environment

Temp: -209 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 53,865,280 km

• M1: 175,329 km (0.094 R)
• M2: 954,734 km (0.112 R)
• M3: 1,545,496 km (0.027 R)
• M4: 2,005,509 km (0.103 R)
• M5: 3,231,015 km (0.086 R)
• M6: 3,790,660 km (0.116 R)
• M7: 5,156,938 km (0.082 R)
• M8: 6,769,304 km (0.055 R)
• M9: 10,103,691 km (0.086 R)
• M10: 13,173,439 km (0.108 R)
• M11: 19,426,480 km (0.104 R)
• M12: 21,819,448 km (0.078 R)
• M13: 24,186,236 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.4

Radius: 9.2

Gravity: 10.8 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 3.03 AU - 3.89 AU

Year: 4222 Days

Day: 13.1 Hours

Environment

Temp: -211 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 53,865,280 km

• M1: 114,442 km (0.067 R)
• M2: 465,100 km (0.075 R)
• M3: 873,951 km (0.101 R)
• M4: 1,256,921 km (0.1 R)
• M5: 2,938,401 km (0.11 R)
• M6: 4,494,518 km (0.105 R)
• M7: 5,507,894 km (0.113 R)
• M8: 6,346,989 km (0.084 R)
• M9: 6,634,217 km (0.049 R)
• M10: 6,929,972 km (0.118 R)
• M11: 7,907,295 km (0.11 R)
• M12: 10,659,746 km (0.117 R)
• M13: 11,020,726 km (0.106 R)
• M14: 11,910,982 km (0.102 R)
• M15: 12,547,222 km (0.117 R)
• M16: 13,205,752 km (0.104 R)
• M17: 14,647,277 km (0.032 R)
• M18: 15,664,842 km (0.053 R)
• M19: 16,548,217 km (0.086 R)
• M20: 18,285,348 km (0.107 R)
• M21: 21,469,389 km (0.103 R)
• M22: 25,562,985 km (0.075 R)
• M23: 26,210,594 km (0.098 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.2

Radius: 13.3

Gravity: 3.08 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 5.16 AU - 5.16 AU

Year: 7689 Days

Day: 9.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 53,865,280 km

• M1: 166,054 km (0.036 R)
• M2: 599,289 km (0.032 R)
• M3: 1,302,848 km (0.059 R)
• M4: 1,999,076 km (0.081 R)
• M5: 2,434,257 km (0.053 R)
• M6: 3,197,804 km (0.056 R)
• M7: 4,140,869 km (0.049 R)
• M8: 5,688,010 km (0.119 R)
• M9: 6,927,129 km (0.065 R)
• M10: 22,705,965 km (0.09 R)
• M11: 24,845,962 km (0.111 R)
• M12: 30,002,900 km (0.081 R)
• M13: 31,271,640 km (0.076 R)
• M14: 33,293,156 km (0.11 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.4

Radius: 14

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 5.44 AU - 5.44 AU

Year: 8324 Days

Day: 11.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 53,865,280 km

• M1: 175,030 km (0.09 R)
• M2: 626,217 km (0.071 R)
• M3: 1,209,499 km (0.084 R)
• M4: 2,089,433 km (0.084 R)
• M5: 2,692,313 km (0.089 R)
• M6: 4,146,703 km (0.117 R)
• M7: 6,494,343 km (0.1 R)
• M8: 8,077,537 km (0.057 R)
• M9: 9,252,628 km (0.092 R)
• M10: 9,810,180 km (0.088 R)
• M11: 12,049,360 km (0.089 R)
• M12: 13,759,713 km (0.118 R)
• M13: 15,240,433 km (0.115 R)
• M14: 18,957,491 km (0.117 R)
• M15: 19,782,822 km (0.105 R)
• M16: 20,242,985 km (0.119 R)
• M17: 26,801,655 km (0.067 R)
• M18: 28,809,857 km (0.084 R)
• M19: 29,500,999 km (0.087 R)
• M20: 31,955,003 km (0.115 R)
• M21: 33,339,681 km (0.085 R)
• M22: 34,321,491 km (0.106 R)
• M23: 38,919,831 km (0.065 R)
• M24: 41,867,657 km (0.081 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 636.5

Radius: 6.8

Gravity: 13.77 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 6.83 AU - 7.33 AU

Year: 12358 Days

Day: 19.3 Hours

Environment

Temp: -215 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 53,865,280 km

• M1: 85,720 km (0.061 R)
• M2: 502,050 km (0.107 R)
• M3: 1,131,409 km (0.044 R)
• M4: 3,058,977 km (0.12 R)
• M5: 4,572,758 km (0.087 R)
• M6: 5,632,659 km (0.115 R)
• M7: 6,220,130 km (0.087 R)
• M8: 8,320,035 km (0.054 R)
• M9: 10,202,425 km (0.045 R)
• M10: 15,971,817 km (0.086 R)
• M11: 23,230,156 km (0.086 R)
• M12: 24,162,001 km (0.096 R)
• M13: 25,410,545 km (0.096 R)
• M14: 27,931,269 km (0.119 R)
• M15: 28,244,527 km (0.055 R)
• M16: 28,560,178 km (0.03 R)
• M17: 29,305,624 km (0.038 R)
• M18: 33,346,263 km (0.114 R)
• M19: 33,935,379 km (0.077 R)
• M20: 36,985,082 km (0.114 R)
• M21: 37,616,235 km (0.115 R)
• M22: 42,511,526 km (0.113 R)
• M23: 44,611,581 km (0.072 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 257 - 11,493 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit