🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.02

Radius: 1.32

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 0.55 AU - 0.67 AU

Year: 303 Days

Day: 27.3 Hours

Environment

Temp: -121 °C

Axial Tilt: 59.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 55,161,228 km

• M1: 126,111 km (0.069 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 323.6

Radius: 14.8

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 0.67 AU - 0.77 AU

Year: 388 Days

Day: 10.4 Hours

Environment

Temp: -150 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 55,161,228 km

• M1: 184,005 km (0.101 R)
• M2: 702,512 km (0.059 R)
• M3: 1,213,538 km (0.104 R)
• M4: 1,726,359 km (0.108 R)
• M5: 2,426,926 km (0.116 R)
• M6: 3,102,211 km (0.118 R)
• M7: 3,753,111 km (0.075 R)
• M8: 4,257,256 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 675.4

Radius: 11.9

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 1.03 AU - 1.19 AU

Year: 744 Days

Day: 14.6 Hours

Environment

Temp: -163 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 55,161,228 km

• M1: 148,251 km (0.055 R)
• M2: 954,734 km (0.057 R)
• M3: 1,453,044 km (0.101 R)
• M4: 1,938,190 km (0.087 R)
• M5: 2,530,747 km (0.072 R)
• M6: 3,306,412 km (0.1 R)
• M7: 4,126,657 km (0.076 R)
• M8: 4,904,117 km (0.113 R)
• M9: 5,438,032 km (0.098 R)
• M10: 5,971,049 km (0.113 R)
• M11: 6,517,979 km (0.054 R)
• M12: 6,988,016 km (0.094 R)
• M13: 7,619,020 km (0.119 R)
• M14: 8,116,881 km (0.069 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.1

Radius: 11.8

Gravity: 5.93 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.13 AU - 1.17 AU

Year: 784 Days

Day: 10.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 55,161,228 km

• M1: 147,354 km (0.112 R)
• M2: 671,545 km (0.103 R)
• M3: 1,071,420 km (0.117 R)
• M4: 1,485,058 km (0.065 R)
• M5: 2,193,404 km (0.093 R)
• M6: 2,900,254 km (0.07 R)
• M7: 4,011,018 km (0.087 R)
• M8: 5,161,875 km (0.074 R)
• M9: 6,037,022 km (0.109 R)
• M10: 7,053,988 km (0.114 R)
• M11: 7,591,793 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 78.6

Radius: 9.2

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 3.56 AU - 4.56 AU

Year: 5201 Days

Day: 13.4 Hours

Environment

Temp: -209 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 55,161,228 km

• M1: 514,018 km (0.079 R)
• M2: 2,656,409 km (0.078 R)
• M3: 4,983,105 km (0.032 R)
• M4: 6,523,066 km (0.088 R)
• M5: 8,975,423 km (0.043 R)
• M6: 12,932,437 km (0.107 R)
• M7: 13,341,437 km (0.103 R)
• M8: 13,928,609 km (0.088 R)
• M9: 14,445,470 km (0.062 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 271.4

Radius: 10.4

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 3.18 AU - 5.2 AU

Year: 5453 Days

Day: 7.8 Hours

Environment

Temp: -217 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 55,161,228 km

• M1: 129,402 km (0.083 R)
• M2: 799,002 km (0.106 R)
• M3: 1,183,768 km (0.077 R)
• M4: 1,898,098 km (0.091 R)
• M5: 2,555,580 km (0.117 R)
• M6: 3,068,103 km (0.095 R)
• M7: 3,549,808 km (0.097 R)
• M8: 3,975,115 km (0.099 R)
• M9: 4,299,742 km (0.073 R)
• M10: 5,538,712 km (0.119 R)
• M11: 7,032,895 km (0.039 R)
• M12: 7,477,350 km (0.096 R)
• M13: 7,873,336 km (0.069 R)
• M14: 9,370,661 km (0.063 R)
• M15: 9,831,422 km (0.084 R)
• M16: 13,931,003 km (0.037 R)
• M17: 14,379,946 km (0.102 R)
• M18: 15,045,507 km (0.115 R)
• M19: 16,939,416 km (0.12 R)
• M20: 17,681,720 km (0.056 R)
• M21: 19,109,034 km (0.117 R)
• M22: 20,292,353 km (0.086 R)
• M23: 20,805,025 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 858.2

Radius: 8

Gravity: 13.41 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 4.7 AU - 7.14 AU

Year: 9158 Days

Day: 6.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 98.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 55,161,228 km

• M1: 99,782 km (0.075 R)
• M2: 387,907 km (0.109 R)
• M3: 683,513 km (0.115 R)
• M4: 1,035,666 km (0.077 R)
• M5: 1,994,140 km (0.053 R)
• M6: 2,293,635 km (0.099 R)
• M7: 2,684,683 km (0.106 R)
• M8: 3,600,522 km (0.117 R)
• M9: 4,650,250 km (0.114 R)
• M10: 5,751,290 km (0.097 R)
• M11: 6,977,095 km (0.05 R)
• M12: 7,842,668 km (0.104 R)
• M13: 9,441,720 km (0.111 R)
• M14: 10,087,534 km (0.113 R)
• M15: 11,356,573 km (0.07 R)
• M16: 12,551,561 km (0.058 R)
• M17: 14,989,707 km (0.105 R)
• M18: 16,006,224 km (0.045 R)
• M19: 17,067,920 km (0.12 R)
• M20: 18,555,521 km (0.062 R)
• M21: 23,266,807 km (0.078 R)
• M22: 24,720,001 km (0.08 R)
• M23: 25,658,428 km (0.105 R)
• M24: 28,007,265 km (0.117 R)
• M25: 32,790,956 km (0.067 R)
• M26: 33,240,796 km (0.109 R)
• M27: 33,580,982 km (0.08 R)
• M28: 35,552,233 km (0.111 R)
• M29: 36,385,942 km (0.109 R)
• M30: 37,845,269 km (0.041 R)
• M31: 39,469,902 km (0.027 R)
• M32: 39,723,919 km (0.112 R)
• M33: 40,621,507 km (0.048 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 457.6

Radius: 4.1

Gravity: 27.22 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 5.4 AU - 6.78 AU

Year: 9556 Days

Day: 17.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 55,161,228 km

• M1: 51,013 km (0.113 R)
• M2: 356,641 km (0.104 R)
• M3: 692,937 km (0.108 R)
• M4: 904,618 km (0.077 R)
• M5: 1,225,655 km (0.114 R)
• M6: 1,776,774 km (0.104 R)
• M7: 2,124,290 km (0.064 R)
• M8: 3,324,214 km (0.063 R)
• M9: 4,239,304 km (0.087 R)
• M10: 4,798,352 km (0.055 R)
• M11: 6,303,007 km (0.109 R)
• M12: 6,991,756 km (0.056 R)
• M13: 7,257,741 km (0.114 R)
• M14: 9,868,224 km (0.028 R)
• M15: 10,594,521 km (0.106 R)
• M16: 10,945,478 km (0.044 R)
• M17: 11,252,303 km (0.113 R)
• M18: 12,873,346 km (0.044 R)
• M19: 13,272,772 km (0.061 R)
• M20: 15,078,867 km (0.11 R)
• M21: 15,715,705 km (0.092 R)
• M22: 17,247,737 km (0.119 R)
• M23: 19,169,920 km (0.034 R)
• M24: 20,144,550 km (0.062 R)
• M25: 20,605,162 km (0.029 R)
• M26: 23,602,804 km (0.059 R)
• M27: 25,965,104 km (0.067 R)
• M28: 26,510,538 km (0.034 R)
• M29: 28,769,316 km (0.103 R)
• M30: 30,344,432 km (0.061 R)
• M31: 31,562,757 km (0.11 R)
• M32: 32,288,307 km (0.045 R)
• M33: 37,105,508 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 643.7

Radius: 4.9

Gravity: 26.81 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 5.56 AU - 8.42 AU

Year: 11750 Days

Day: 22 Hours

Environment

Temp: -216 °C

Axial Tilt: 43 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 55,161,228 km

• M1: 69,563 km (0.112 R)
• M2: 299,794 km (0.05 R)
• M3: 510,877 km (0.101 R)
• M4: 730,038 km (0.11 R)
• M5: 1,077,404 km (0.029 R)
• M6: 2,903,695 km (0.103 R)
• M7: 3,739,498 km (0.109 R)
• M8: 4,979,664 km (0.088 R)
• M9: 5,447,906 km (0.063 R)
• M10: 9,782,354 km (0.096 R)
• M11: 12,870,802 km (0.071 R)
• M12: 16,120,517 km (0.103 R)
• M13: 19,228,263 km (0.08 R)
• M14: 22,623,536 km (0.085 R)
• M15: 23,256,036 km (0.041 R)
• M16: 33,390,843 km (0.109 R)
• M17: 33,623,617 km (0.032 R)
• M18: 37,875,039 km (0.1 R)
• M19: 40,326,350 km (0.105 R)
• M20: 40,590,390 km (0.076 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 435.7

Radius: 5

Gravity: 17.43 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 7.24 AU - 9.56 AU

Year: 15479 Days

Day: 22.3 Hours

Environment

Temp: -233 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 55,161,228 km

• M1: 62,233 km (0.119 R)
• M2: 283,638 km (0.077 R)
• M3: 523,144 km (0.04 R)
• M4: 1,462,319 km (0.092 R)
• M5: 1,640,939 km (0.102 R)
• M6: 2,266,258 km (0.085 R)
• M7: 3,588,554 km (0.112 R)
• M8: 3,831,949 km (0.098 R)
• M9: 6,908,280 km (0.079 R)
• M10: 7,632,184 km (0.107 R)
• M11: 8,126,605 km (0.085 R)
• M12: 9,080,142 km (0.118 R)
• M13: 14,506,057 km (0.11 R)
• M14: 15,474,853 km (0.086 R)
• M15: 22,571,177 km (0.115 R)
• M16: 24,344,959 km (0.078 R)
• M17: 43,529,240 km (0.111 R)
• M18: 44,096,216 km (0.037 R)
• M19: 48,658,054 km (0.075 R)
• M20: 50,661,319 km (0.069 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 288 - 12,866 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit