🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.35

Radius: 0.66

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.6 AU - 0.66 AU

Year: 318 Days

Day: 28.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 4.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 67,021,539 km

• M1: 125,363 km (0.057 R)
• M2: 257,608 km (0.104 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 237.2

Radius: 11.7

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 1.07 AU - 1.09 AU

Year: 714 Days

Day: 7.1 Hours

Environment

Temp: -165 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 67,021,539 km

• M1: 148,251 km (0.101 R)
• M2: 912,098 km (0.097 R)
• M3: 1,584,241 km (0.089 R)
• M4: 2,287,950 km (0.083 R)
• M5: 3,292,500 km (0.087 R)
• M6: 3,723,790 km (0.05 R)
• M7: 4,760,204 km (0.115 R)
• M8: 5,362,036 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 647.7

Radius: 12.9

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.69 AU - 2.13 AU

Year: 1678 Days

Day: 13.6 Hours

Environment

Temp: -185 °C

Axial Tilt: 151.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 67,021,539 km

• M1: 160,369 km (0.046 R)
• M2: 607,068 km (0.099 R)
• M3: 1,293,722 km (0.11 R)
• M4: 2,150,619 km (0.114 R)
• M5: 2,567,099 km (0.069 R)
• M6: 3,142,004 km (0.087 R)
• M7: 3,699,705 km (0.101 R)
• M8: 4,360,628 km (0.084 R)
• M9: 4,830,515 km (0.115 R)
• M10: 5,554,270 km (0.109 R)
• M11: 6,013,086 km (0.11 R)
• M12: 9,226,299 km (0.069 R)
• M13: 9,839,052 km (0.102 R)
• M14: 10,342,000 km (0.085 R)
• M15: 11,767,369 km (0.087 R)
• M16: 12,181,306 km (0.102 R)
• M17: 12,840,434 km (0.047 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 512.9

Radius: 14.6

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 2.22 AU - 2.9 AU

Year: 2604 Days

Day: 6.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 67,021,539 km

• M1: 182,809 km (0.081 R)
• M2: 689,945 km (0.096 R)
• M3: 1,184,217 km (0.114 R)
• M4: 1,657,844 km (0.051 R)
• M5: 2,325,349 km (0.116 R)
• M6: 2,963,384 km (0.055 R)
• M7: 3,591,845 km (0.045 R)
• M8: 4,052,906 km (0.102 R)
• M9: 4,722,655 km (0.06 R)
• M10: 5,255,523 km (0.09 R)
• M11: 5,803,799 km (0.102 R)
• M12: 6,522,916 km (0.094 R)
• M13: 7,100,813 km (0.06 R)
• M14: 7,623,059 km (0.117 R)
• M15: 8,077,986 km (0.109 R)
• M16: 8,876,689 km (0.119 R)
• M17: 9,518,464 km (0.075 R)
• M18: 11,591,890 km (0.118 R)
• M19: 12,819,341 km (0.084 R)
• M20: 13,684,615 km (0.101 R)
• M21: 15,676,810 km (0.056 R)
• M22: 16,166,743 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 442.8

Radius: 10.1

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 2.76 AU - 2.8 AU

Year: 2947 Days

Day: 9.9 Hours

Environment

Temp: -195 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 67,021,539 km

• M1: 127,906 km (0.087 R)
• M2: 468,690 km (0.09 R)
• M3: 867,668 km (0.095 R)
• M4: 1,327,532 km (0.086 R)
• M5: 1,657,395 km (0.116 R)
• M6: 2,487,214 km (0.082 R)
• M7: 3,125,399 km (0.076 R)
• M8: 4,202,503 km (0.05 R)
• M9: 4,683,610 km (0.098 R)
• M10: 5,583,591 km (0.099 R)
• M11: 6,760,777 km (0.05 R)
• M12: 7,363,656 km (0.086 R)
• M13: 8,033,256 km (0.106 R)
• M14: 9,564,091 km (0.117 R)
• M15: 10,473,347 km (0.114 R)
• M16: 10,814,580 km (0.074 R)
• M17: 11,801,178 km (0.105 R)
• M18: 15,073,631 km (0.118 R)
• M19: 15,754,451 km (0.052 R)
• M20: 16,865,664 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 152.7

Radius: 12

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 2.96 AU - 4.14 AU

Year: 4253 Days

Day: 8.8 Hours

Environment

Temp: -205 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 67,021,539 km

• M1: 149,448 km (0.065 R)
• M2: 546,481 km (0.08 R)
• M3: 941,270 km (0.089 R)
• M4: 1,462,319 km (0.098 R)
• M5: 2,615,420 km (0.05 R)
• M6: 3,086,802 km (0.09 R)
• M7: 3,477,253 km (0.087 R)
• M8: 4,144,609 km (0.12 R)
• M9: 5,158,284 km (0.112 R)
• M10: 6,749,108 km (0.072 R)
• M11: 7,412,275 km (0.036 R)
• M12: 9,394,746 km (0.052 R)
• M13: 15,337,970 km (0.059 R)
• M14: 15,761,632 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 264.1

Radius: 8.3

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 2.8 AU - 4.44 AU

Year: 4379 Days

Day: 8.7 Hours

Environment

Temp: -202 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 67,021,539 km

• M1: 103,223 km (0.089 R)
• M2: 412,292 km (0.04 R)
• M3: 1,374,655 km (0.11 R)
• M4: 2,758,286 km (0.045 R)
• M5: 3,133,926 km (0.118 R)
• M6: 6,015,779 km (0.085 R)
• M7: 6,341,155 km (0.091 R)
• M8: 11,301,222 km (0.103 R)
• M9: 12,701,158 km (0.103 R)
• M10: 13,929,806 km (0.119 R)
• M11: 17,155,435 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 989.1

Radius: 10.9

Gravity: 8.33 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 4.24 AU - 6.22 AU

Year: 7605 Days

Day: 6.9 Hours

Environment

Temp: -219 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 67,021,539 km

• M1: 146,756 km (0.076 R)
• M2: 1,267,543 km (0.075 R)
• M3: 1,827,488 km (0.111 R)
• M4: 2,341,955 km (0.088 R)
• M5: 3,891,190 km (0.067 R)
• M6: 6,140,394 km (0.111 R)
• M7: 6,797,578 km (0.114 R)
• M8: 8,780,497 km (0.108 R)
• M9: 10,002,562 km (0.054 R)
• M10: 11,175,260 km (0.098 R)
• M11: 11,549,704 km (0.066 R)
• M12: 15,505,221 km (0.09 R)
• M13: 17,714,183 km (0.114 R)
• M14: 19,657,459 km (0.111 R)
• M15: 20,520,938 km (0.065 R)
• M16: 22,323,443 km (0.103 R)
• M17: 28,460,995 km (0.063 R)
• M18: 38,719,370 km (0.102 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 781.5

Radius: 3.3

Gravity: 71.76 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 7.53 AU - 9.27 AU

Year: 15479 Days

Day: 19.3 Hours

Environment

Temp: -237 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 67,021,539 km

• M1: 41,139 km (0.073 R)
• M2: 195,076 km (0.049 R)
• M3: 364,271 km (0.063 R)
• M4: 486,043 km (0.115 R)
• M5: 601,383 km (0.056 R)
• M6: 1,087,577 km (0.118 R)
• M7: 1,259,464 km (0.092 R)
• M8: 1,691,653 km (0.091 R)
• M9: 2,673,613 km (0.074 R)
• M10: 2,815,432 km (0.108 R)
• M11: 3,012,452 km (0.115 R)
• M12: 3,863,365 km (0.059 R)
• M13: 4,137,728 km (0.032 R)
• M14: 5,943,374 km (0.098 R)
• M15: 8,978,415 km (0.105 R)
• M16: 9,678,085 km (0.097 R)
• M17: 10,764,764 km (0.063 R)
• M18: 13,588,723 km (0.047 R)
• M19: 14,079,104 km (0.08 R)
• M20: 16,472,371 km (0.111 R)
• M21: 19,561,418 km (0.045 R)
• M22: 21,009,076 km (0.11 R)
• M23: 22,236,676 km (0.086 R)
• M24: 24,937,367 km (0.059 R)
• M25: 29,793,463 km (0.085 R)
• M26: 30,145,766 km (0.108 R)
• M27: 36,971,917 km (0.095 R)
• M28: 44,300,118 km (0.041 R)
• M29: 47,419,533 km (0.088 R)
• M30: 48,544,958 km (0.117 R)
• M31: 52,028,045 km (0.093 R)
• M32: 52,197,988 km (0.091 R)
• M33: 54,091,299 km (0.119 R)
• M34: 54,790,968 km (0.046 R)
• M35: 56,566,396 km (0.085 R)
• M36: 61,931,723 km (0.054 R)
• M37: 62,889,748 km (0.118 R)
• M38: 65,823,063 km (0.096 R)
• M39: 66,220,993 km (0.102 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 332 - 16,999 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit