🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.44 AU - 0.64 AU

Year: 252 Days

Day: 26.2 Hours

Environment

Temp: -114 °C

Axial Tilt: 12.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 62,113,352 km

• M1: 16,755 km (0.081 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.92

Radius: 1.54

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.48 AU - 0.62 AU

Year: 259 Days

Day: 43.6 Hours

Environment

Temp: -131 °C

Axial Tilt: 26.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 89.6

Radius: 11.6

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.72 AU - 1.1 AU

Year: 552 Days

Day: 14.8 Hours

Environment

Temp: -157 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 62,113,352 km

• M1: 144,661 km (0.053 R)
• M2: 532,568 km (0.085 R)
• M3: 1,051,972 km (0.033 R)
• M4: 1,476,531 km (0.04 R)
• M5: 2,002,667 km (0.098 R)
• M6: 2,379,653 km (0.05 R)
• M7: 3,044,765 km (0.087 R)
• M8: 3,527,219 km (0.058 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 64.9

Radius: 10.6

Gravity: 0.58 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1.93 AU - 2.23 AU

Year: 1907 Days

Day: 5.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 62,113,352 km

• M1: 132,394 km (0.107 R)
• M2: 477,516 km (0.103 R)
• M3: 937,829 km (0.066 R)
• M4: 1,511,686 km (0.119 R)
• M5: 2,021,666 km (0.066 R)
• M6: 2,897,262 km (0.108 R)
• M7: 3,531,258 km (0.046 R)
• M8: 4,910,401 km (0.11 R)
• M9: 5,812,924 km (0.087 R)
• M10: 6,519,924 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 229.7

Radius: 13.8

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 3.98 AU - 4.2 AU

Year: 5259 Days

Day: 6.1 Hours

Environment

Temp: -216 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 62,113,352 km

• M1: 171,589 km (0.085 R)
• M2: 1,227,002 km (0.05 R)
• M3: 1,847,534 km (0.117 R)
• M4: 2,435,154 km (0.098 R)
• M5: 3,128,989 km (0.116 R)
• M6: 3,714,066 km (0.073 R)
• M7: 4,525,485 km (0.115 R)
• M8: 5,081,540 km (0.065 R)
• M9: 5,761,612 km (0.108 R)
• M10: 6,939,995 km (0.114 R)
• M11: 7,810,954 km (0.084 R)
• M12: 9,072,213 km (0.104 R)
• M13: 10,037,120 km (0.072 R)
• M14: 13,344,429 km (0.116 R)
• M15: 15,193,459 km (0.079 R)
• M16: 15,811,448 km (0.073 R)
• M17: 16,824,225 km (0.11 R)
• M18: 21,632,600 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 893.1

Radius: 13

Gravity: 5.28 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 4.16 AU - 6.64 AU

Year: 7979 Days

Day: 13.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 62,113,352 km

• M1: 162,164 km (0.081 R)
• M2: 595,400 km (0.091 R)
• M3: 1,054,964 km (0.044 R)
• M4: 1,511,836 km (0.12 R)
• M5: 2,380,252 km (0.057 R)
• M6: 2,865,248 km (0.112 R)
• M7: 3,907,347 km (0.107 R)
• M8: 4,762,448 km (0.044 R)
• M9: 5,314,016 km (0.074 R)
• M10: 6,768,556 km (0.118 R)
• M11: 7,229,317 km (0.05 R)
• M12: 8,257,054 km (0.105 R)
• M13: 8,783,938 km (0.104 R)
• M14: 9,426,910 km (0.107 R)
• M15: 11,225,226 km (0.115 R)
• M16: 17,550,673 km (0.099 R)
• M17: 21,461,460 km (0.084 R)
• M18: 22,375,354 km (0.112 R)
• M19: 23,314,978 km (0.083 R)
• M20: 25,825,679 km (0.033 R)
• M21: 29,413,185 km (0.112 R)
• M22: 31,590,582 km (0.083 R)
• M23: 36,264,319 km (0.088 R)
• M24: 38,280,599 km (0.045 R)
• M25: 40,999,540 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 741.3

Radius: 4.6

Gravity: 35.03 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 5.29 AU - 8.25 AU

Year: 11200 Days

Day: 16.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 62,113,352 km

• M1: 58,493 km (0.111 R)
• M2: 361,279 km (0.098 R)
• M3: 693,835 km (0.088 R)
• M4: 1,546,692 km (0.105 R)
• M5: 1,860,399 km (0.096 R)
• M6: 2,635,316 km (0.068 R)
• M7: 3,275,296 km (0.064 R)
• M8: 3,738,002 km (0.079 R)
• M9: 4,272,366 km (0.076 R)
• M10: 4,573,357 km (0.039 R)
• M11: 4,920,573 km (0.063 R)
• M12: 5,596,756 km (0.105 R)
• M13: 6,487,461 km (0.105 R)
• M14: 7,048,603 km (0.116 R)
• M15: 7,511,758 km (0.118 R)
• M16: 8,592,303 km (0.088 R)
• M17: 10,562,657 km (0.067 R)
• M18: 11,112,579 km (0.096 R)
• M19: 12,938,570 km (0.048 R)
• M20: 13,440,471 km (0.1 R)
• M21: 14,085,836 km (0.107 R)
• M22: 14,684,078 km (0.105 R)
• M23: 16,145,799 km (0.086 R)
• M24: 16,289,862 km (0.102 R)
• M25: 17,023,191 km (0.081 R)
• M26: 17,625,472 km (0.078 R)
• M27: 18,952,255 km (0.115 R)
• M28: 25,023,236 km (0.1 R)
• M29: 27,099,953 km (0.111 R)
• M30: 27,508,206 km (0.084 R)
• M31: 28,863,114 km (0.033 R)
• M32: 29,075,393 km (0.105 R)
• M33: 33,426,896 km (0.111 R)
• M34: 34,968,652 km (0.078 R)
• M35: 42,289,972 km (0.06 R)
• M36: 45,944,199 km (0.104 R)
• M37: 52,597,863 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 581.7

Radius: 5.4

Gravity: 19.95 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 7.73 AU - 9.45 AU

Year: 16007 Days

Day: 18.6 Hours

Environment

Temp: -218 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 62,113,352 km

• M1: 68,516 km (0.065 R)
• M2: 248,632 km (0.086 R)
• M3: 658,380 km (0.031 R)
• M4: 968,497 km (0.092 R)
• M5: 1,183,020 km (0.118 R)
• M6: 1,385,875 km (0.092 R)
• M7: 1,862,493 km (0.104 R)
• M8: 2,796,433 km (0.118 R)
• M9: 3,134,225 km (0.067 R)
• M10: 3,339,174 km (0.099 R)
• M11: 3,691,327 km (0.117 R)
• M12: 5,245,051 km (0.084 R)
• M13: 5,461,369 km (0.044 R)
• M14: 6,028,046 km (0.076 R)
• M15: 6,427,024 km (0.096 R)
• M16: 6,674,907 km (0.052 R)
• M17: 6,843,504 km (0.068 R)
• M18: 7,730,171 km (0.115 R)
• M19: 10,055,969 km (0.054 R)
• M20: 12,048,313 km (0.066 R)
• M21: 12,488,879 km (0.073 R)
• M22: 13,738,919 km (0.089 R)
• M23: 18,896,006 km (0.049 R)
• M24: 19,234,247 km (0.111 R)
• M25: 19,662,695 km (0.108 R)
• M26: 22,556,816 km (0.087 R)
• M27: 26,452,793 km (0.083 R)
• M28: 30,891,212 km (0.115 R)
• M29: 31,478,833 km (0.104 R)
• M30: 34,907,018 km (0.04 R)
• M31: 38,305,881 km (0.054 R)
• M32: 39,120,442 km (0.106 R)
• M33: 44,251,649 km (0.084 R)
• M34: 50,135,632 km (0.081 R)
• M35: 61,187,324 km (0.1 R)
• M36: 62,113,335 km (0.117 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 265 - 11,073 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit