🌌 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: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 0.59 AU - 0.73 AU

Year: 346 Days

Day: 34.9 Hours

Environment

Temp: -133 °C

Axial Tilt: 28 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 72,992,233 km

• M1: 22,290 km (0.084 R)
• M2: 45,179 km (0.113 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.9

Radius: 13.9

Gravity: 3.98 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.6 AU - 0.76 AU

Year: 362 Days

Day: 7.7 Hours

Environment

Temp: -127 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 72,992,233 km

• M1: 173,234 km (0.064 R)
• M2: 767,886 km (0.115 R)
• M3: 1,643,482 km (0.103 R)
• M4: 2,160,642 km (0.087 R)
• M5: 2,602,853 km (0.032 R)
• M6: 3,214,559 km (0.114 R)
• M7: 3,735,309 km (0.114 R)
• M8: 4,339,236 km (0.109 R)
• M9: 5,174,142 km (0.051 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 691.7

Radius: 14.5

Gravity: 3.29 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.79 AU - 1.11 AU

Year: 598 Days

Day: 5.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 72,992,233 km

• M1: 180,415 km (0.078 R)
• M2: 978,520 km (0.037 R)
• M3: 1,439,880 km (0.116 R)
• M4: 1,999,525 km (0.083 R)
• M5: 2,557,076 km (0.109 R)
• M6: 3,051,497 km (0.045 R)
• M7: 3,949,833 km (0.114 R)
• M8: 6,118,553 km (0.061 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 885.3

Radius: 8.3

Gravity: 12.85 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.87 AU - 1.45 AU

Year: 807 Days

Day: 5.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 72,992,233 km

• M1: 103,971 km (0.028 R)
• M2: 368,908 km (0.084 R)
• M3: 675,285 km (0.093 R)
• M4: 1,085,482 km (0.106 R)
• M5: 1,443,769 km (0.093 R)
• M6: 1,725,312 km (0.117 R)
• M7: 2,134,762 km (0.109 R)
• M8: 2,801,071 km (0.116 R)
• M9: 4,221,054 km (0.113 R)
• M10: 4,967,547 km (0.084 R)
• M11: 6,152,512 km (0.048 R)
• M12: 7,180,997 km (0.114 R)
• M13: 7,637,719 km (0.054 R)
• M14: 9,404,620 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.9

Radius: 11.6

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 1.36 AU - 1.56 AU

Year: 1139 Days

Day: 7.9 Hours

Environment

Temp: -172 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 72,992,233 km

• M1: 144,362 km (0.075 R)
• M2: 711,637 km (0.088 R)
• M3: 1,105,229 km (0.03 R)
• M4: 1,605,933 km (0.114 R)
• M5: 2,021,217 km (0.066 R)
• M6: 2,719,091 km (0.116 R)
• M7: 4,490,479 km (0.059 R)
• M8: 5,053,416 km (0.119 R)
• M9: 5,749,046 km (0.053 R)
• M10: 6,156,401 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 619.7

Radius: 11.2

Gravity: 4.94 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.98 AU - 2.74 AU

Year: 2341 Days

Day: 5.5 Hours

Environment

Temp: -198 °C

Axial Tilt: 150.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 72,992,233 km

• M1: 139,425 km (0.12 R)
• M2: 526,884 km (0.112 R)
• M3: 2,157,052 km (0.105 R)
• M4: 2,681,542 km (0.086 R)
• M5: 3,583,168 km (0.119 R)
• M6: 4,262,492 km (0.029 R)
• M7: 5,253,428 km (0.116 R)
• M8: 5,729,598 km (0.092 R)
• M9: 7,160,951 km (0.045 R)
• M10: 8,589,760 km (0.098 R)
• M11: 9,117,093 km (0.117 R)
• M12: 10,055,819 km (0.106 R)
• M13: 10,716,743 km (0.03 R)
• M14: 12,125,356 km (0.105 R)
• M15: 14,834,873 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 525

Radius: 13.7

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 3.2 AU - 4.54 AU

Year: 4916 Days

Day: 11.5 Hours

Environment

Temp: -207 °C

Axial Tilt: 148.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 72,992,233 km

• M1: 261,946 km (0.095 R)
• M2: 948,301 km (0.109 R)
• M3: 1,934,300 km (0.073 R)
• M4: 2,644,591 km (0.069 R)
• M5: 4,541,492 km (0.081 R)
• M6: 8,974,077 km (0.068 R)
• M7: 10,474,544 km (0.092 R)
• M8: 12,469,581 km (0.116 R)
• M9: 13,154,590 km (0.084 R)
• M10: 14,493,191 km (0.1 R)
• M11: 15,140,800 km (0.113 R)
• M12: 16,668,943 km (0.106 R)
• M13: 17,140,774 km (0.085 R)
• M14: 17,926,762 km (0.053 R)
• M15: 23,229,557 km (0.111 R)
• M16: 24,569,655 km (0.074 R)
• M17: 26,118,292 km (0.079 R)
• M18: 26,675,395 km (0.088 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 745.5

Radius: 7

Gravity: 15.21 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 9.28 AU - 9.76 AU

Year: 18966 Days

Day: 17.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 72,992,233 km

• M1: 87,365 km (0.078 R)
• M2: 384,616 km (0.088 R)
• M3: 638,035 km (0.1 R)
• M4: 923,767 km (0.098 R)
• M5: 2,024,209 km (0.108 R)
• M6: 2,653,567 km (0.107 R)
• M7: 3,052,844 km (0.079 R)
• M8: 3,578,381 km (0.112 R)
• M9: 4,989,089 km (0.103 R)
• M10: 5,441,323 km (0.075 R)
• M11: 6,086,389 km (0.116 R)
• M12: 7,479,744 km (0.087 R)
• M13: 9,979,225 km (0.112 R)
• M14: 11,577,080 km (0.109 R)
• M15: 13,197,075 km (0.12 R)
• M16: 14,061,153 km (0.086 R)
• M17: 14,283,006 km (0.118 R)
• M18: 14,657,749 km (0.087 R)
• M19: 19,135,064 km (0.103 R)
• M20: 22,077,803 km (0.112 R)
• M21: 26,191,296 km (0.117 R)
• M22: 30,170,899 km (0.117 R)
• M23: 31,920,446 km (0.034 R)
• M24: 35,211,000 km (0.109 R)
• M25: 37,858,284 km (0.096 R)
• M26: 39,157,243 km (0.077 R)
• M27: 43,859,104 km (0.049 R)
• M28: 58,462,100 km (0.091 R)
• M29: 59,614,153 km (0.11 R)
• M30: 64,170,904 km (0.092 R)
• M31: 65,396,709 km (0.071 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 568.2

Radius: 6.5

Gravity: 13.45 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 8.97 AU - 11.17 AU

Year: 20633 Days

Day: 24.2 Hours

Environment

Temp: -228 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 72,992,233 km

• M1: 81,830 km (0.114 R)
• M2: 464,950 km (0.109 R)
• M3: 1,275,621 km (0.049 R)
• M4: 1,877,603 km (0.114 R)
• M5: 2,797,480 km (0.115 R)
• M6: 3,398,265 km (0.052 R)
• M7: 3,744,136 km (0.088 R)
• M8: 4,747,189 km (0.066 R)
• M9: 9,924,323 km (0.094 R)
• M10: 10,691,760 km (0.077 R)
• M11: 11,434,663 km (0.069 R)
• M12: 12,411,088 km (0.112 R)
• M13: 13,726,203 km (0.047 R)
• M14: 23,006,507 km (0.113 R)
• M15: 24,451,922 km (0.12 R)
• M16: 28,561,375 km (0.117 R)
• M17: 28,913,379 km (0.066 R)
• M18: 33,108,552 km (0.04 R)
• M19: 34,151,548 km (0.057 R)
• M20: 42,224,298 km (0.112 R)
• M21: 57,041,369 km (0.055 R)
• M22: 59,678,630 km (0.104 R)
• M23: 63,985,253 km (0.08 R)
• M24: 67,451,735 km (0.081 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 380 - 14,275 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit