🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.17

Radius: 1.06

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.51 AU - 0.67 AU

Year: 297 Days

Day: 41.6 Hours

Environment

Temp: -125 °C

Axial Tilt: 37.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 863.1

Radius: 11.7

Gravity: 6.31 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.53 AU - 0.87 AU

Year: 384 Days

Day: 11.6 Hours

Environment

Temp: -133 °C

Axial Tilt: 47.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 54,039,612 km

• M1: 145,708 km (0.065 R)
• M2: 547,528 km (0.069 R)
• M3: 1,040,752 km (0.064 R)
• M4: 1,418,637 km (0.091 R)
• M5: 1,866,981 km (0.117 R)
• M6: 2,780,426 km (0.103 R)
• M7: 3,373,731 km (0.118 R)
• M8: 4,920,723 km (0.06 R)
• M9: 5,457,779 km (0.097 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 33.6

Radius: 14.2

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 2.22 AU - 2.5 AU

Year: 2378 Days

Day: 11.4 Hours

Environment

Temp: -191 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 54,039,612 km

• M1: 178,620 km (0.071 R)
• M2: 1,062,145 km (0.109 R)
• M3: 2,105,440 km (0.068 R)
• M4: 2,910,576 km (0.111 R)
• M5: 3,954,021 km (0.104 R)
• M6: 4,540,445 km (0.097 R)
• M7: 5,350,817 km (0.062 R)
• M8: 6,735,495 km (0.046 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.3

Radius: 10.9

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 3.36 AU - 4.4 AU

Year: 5014 Days

Day: 11.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 54,039,612 km

• M1: 135,536 km (0.059 R)
• M2: 524,041 km (0.07 R)
• M3: 1,153,250 km (0.109 R)
• M4: 1,680,433 km (0.066 R)
• M5: 2,098,559 km (0.064 R)
• M6: 2,892,624 km (0.061 R)
• M7: 3,663,502 km (0.069 R)
• M8: 4,280,893 km (0.09 R)
• M9: 4,713,530 km (0.101 R)
• M10: 8,060,632 km (0.057 R)
• M11: 9,661,629 km (0.116 R)
• M12: 10,030,687 km (0.093 R)
• M13: 12,065,966 km (0.083 R)
• M14: 13,331,115 km (0.097 R)
• M15: 16,353,142 km (0.041 R)
• M16: 17,839,097 km (0.097 R)
• M17: 18,963,475 km (0.088 R)
• M18: 22,620,245 km (0.116 R)
• M19: 23,053,481 km (0.117 R)
• M20: 26,482,114 km (0.074 R)
• M21: 27,125,236 km (0.036 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 154.7

Radius: 12.2

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 3.97 AU - 5.21 AU

Year: 6451 Days

Day: 6.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 54,039,612 km

• M1: 157,078 km (0.113 R)
• M2: 631,901 km (0.06 R)
• M3: 1,040,453 km (0.059 R)
• M4: 1,495,680 km (0.117 R)
• M5: 1,995,187 km (0.053 R)
• M6: 2,545,109 km (0.092 R)
• M7: 3,022,475 km (0.112 R)
• M8: 3,732,766 km (0.104 R)
• M9: 5,039,803 km (0.081 R)
• M10: 6,573,630 km (0.066 R)
• M11: 8,432,982 km (0.109 R)
• M12: 10,342,898 km (0.115 R)
• M13: 16,513,810 km (0.091 R)
• M14: 18,706,466 km (0.11 R)
• M15: 19,903,249 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 651.1

Radius: 10.5

Gravity: 5.91 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 3.67 AU - 5.65 AU

Year: 6599 Days

Day: 12.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 54,039,612 km

• M1: 130,898 km (0.056 R)
• M2: 1,140,385 km (0.08 R)
• M3: 1,541,905 km (0.105 R)
• M4: 1,918,892 km (0.105 R)
• M5: 2,980,139 km (0.116 R)
• M6: 5,860,497 km (0.037 R)
• M7: 7,075,082 km (0.027 R)
• M8: 7,973,267 km (0.031 R)
• M9: 8,695,526 km (0.092 R)
• M10: 9,417,186 km (0.094 R)
• M11: 10,041,009 km (0.041 R)
• M12: 11,174,363 km (0.1 R)
• M13: 13,806,537 km (0.088 R)
• M14: 15,631,631 km (0.052 R)
• M15: 16,316,341 km (0.088 R)
• M16: 22,298,610 km (0.116 R)
• M17: 26,077,302 km (0.116 R)
• M18: 27,128,975 km (0.048 R)
• M19: 28,117,817 km (0.116 R)
• M20: 28,575,138 km (0.116 R)
• M21: 30,167,159 km (0.088 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 697.3

Radius: 5.5

Gravity: 23.05 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 6.32 AU - 7.5 AU

Year: 11916 Days

Day: 22.1 Hours

Environment

Temp: -220 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 54,039,612 km

• M1: 68,516 km (0.105 R)
• M2: 521,199 km (0.076 R)
• M3: 807,380 km (0.078 R)
• M4: 1,218,774 km (0.098 R)
• M5: 1,415,944 km (0.101 R)
• M6: 1,978,432 km (0.069 R)
• M7: 2,614,821 km (0.096 R)
• M8: 4,165,104 km (0.088 R)
• M9: 4,774,117 km (0.07 R)
• M10: 5,545,743 km (0.053 R)
• M11: 6,054,375 km (0.025 R)
• M12: 9,371,708 km (0.032 R)
• M13: 10,039,663 km (0.034 R)
• M14: 10,466,166 km (0.064 R)
• M15: 10,683,831 km (0.095 R)
• M16: 11,759,739 km (0.119 R)
• M17: 11,935,965 km (0.116 R)
• M18: 12,843,875 km (0.085 R)
• M19: 15,986,028 km (0.069 R)
• M20: 17,772,377 km (0.116 R)
• M21: 18,873,567 km (0.037 R)
• M22: 21,038,248 km (0.085 R)
• M23: 21,736,271 km (0.103 R)
• M24: 27,781,372 km (0.081 R)
• M25: 29,369,652 km (0.083 R)
• M26: 29,694,280 km (0.066 R)
• M27: 31,241,720 km (0.096 R)
• M28: 32,149,630 km (0.076 R)
• M29: 37,080,226 km (0.115 R)
• M30: 38,483,903 km (0.03 R)
• M31: 50,545,680 km (0.097 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 642.7

Radius: 5.9

Gravity: 18.46 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 5.9 AU - 8.26 AU

Year: 12358 Days

Day: 24.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 54,039,612 km

• M1: 73,752 km (0.077 R)
• M2: 437,723 km (0.078 R)
• M3: 663,766 km (0.115 R)
• M4: 936,931 km (0.067 R)
• M5: 1,322,595 km (0.117 R)
• M6: 1,908,869 km (0.06 R)
• M7: 2,157,201 km (0.034 R)
• M8: 2,988,068 km (0.119 R)
• M9: 3,399,312 km (0.076 R)
• M10: 3,847,508 km (0.098 R)
• M11: 4,608,063 km (0.112 R)
• M12: 5,090,068 km (0.081 R)
• M13: 6,041,660 km (0.115 R)
• M14: 6,738,486 km (0.098 R)
• M15: 7,487,673 km (0.093 R)
• M16: 8,062,278 km (0.118 R)
• M17: 11,156,860 km (0.067 R)
• M18: 14,154,053 km (0.11 R)
• M19: 15,943,692 km (0.119 R)
• M20: 16,377,227 km (0.086 R)
• M21: 17,192,236 km (0.115 R)
• M22: 17,648,061 km (0.114 R)
• M23: 18,583,795 km (0.036 R)
• M24: 20,300,281 km (0.041 R)
• M25: 22,477,978 km (0.103 R)
• M26: 24,139,262 km (0.078 R)
• M27: 26,378,892 km (0.102 R)
• M28: 26,680,780 km (0.117 R)
• M29: 27,600,658 km (0.106 R)
• M30: 28,330,396 km (0.09 R)
• M31: 29,073,149 km (0.092 R)
• M32: 29,611,403 km (0.058 R)
• M33: 30,708,105 km (0.093 R)
• M34: 39,022,605 km (0.101 R)
• M35: 40,874,925 km (0.031 R)
• M36: 45,327,407 km (0.059 R)
• M37: 46,196,720 km (0.094 R)
• M38: 53,394,622 km (0.12 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: 449 - 16,152 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit