🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.98

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.56 AU - 0.56 AU

Year: 271 Days

Day: 25.4 Hours

Environment

Temp: -132 °C

Axial Tilt: 20.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 79,788,420 km

• M1: 448,494 km (0.037 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.36

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.6 AU - 0.72 AU

Year: 346 Days

Day: 13 Hours

Environment

Temp: -126 °C

Axial Tilt: 0.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 959.3

Radius: 13.8

Gravity: 5.04 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.69 AU - 0.79 AU

Year: 411 Days

Day: 12.6 Hours

Environment

Temp: -138 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 79,788,420 km

• M1: 171,589 km (0.055 R)
• M2: 808,726 km (0.077 R)
• M3: 1,280,707 km (0.063 R)
• M4: 1,991,148 km (0.06 R)
• M5: 2,433,957 km (0.117 R)
• M6: 2,889,333 km (0.073 R)
• M7: 3,377,770 km (0.113 R)
• M8: 4,097,486 km (0.117 R)
• M9: 4,582,931 km (0.109 R)
• M10: 5,203,313 km (0.071 R)
• M11: 6,202,328 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 846.2

Radius: 9.5

Gravity: 9.38 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.8 AU - 1.14 AU

Year: 617 Days

Day: 14.7 Hours

Environment

Temp: -152 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 79,788,420 km

• M1: 119,080 km (0.09 R)
• M2: 525,388 km (0.061 R)
• M3: 1,009,486 km (0.078 R)
• M4: 1,470,547 km (0.12 R)
• M5: 2,572,934 km (0.103 R)
• M6: 3,429,082 km (0.048 R)
• M7: 3,814,895 km (0.036 R)
• M8: 4,773,668 km (0.104 R)
• M9: 6,298,519 km (0.095 R)
• M10: 7,052,044 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 539

Radius: 11

Gravity: 4.45 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.82 AU - 1.3 AU

Year: 705 Days

Day: 7.3 Hours

Environment

Temp: -156 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 79,788,420 km

• M1: 137,032 km (0.098 R)
• M2: 479,760 km (0.114 R)
• M3: 921,224 km (0.042 R)
• M4: 1,999,076 km (0.065 R)
• M5: 2,636,064 km (0.11 R)
• M6: 3,481,591 km (0.092 R)
• M7: 4,238,856 km (0.113 R)
• M8: 4,884,670 km (0.062 R)
• M9: 5,257,468 km (0.066 R)
• M10: 7,199,248 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 993

Radius: 13.9

Gravity: 5.14 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 3.08 AU - 3.14 AU

Year: 3541 Days

Day: 5.2 Hours

Environment

Temp: -196 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 79,788,420 km

• M1: 172,935 km (0.088 R)
• M2: 674,986 km (0.105 R)
• M3: 1,151,305 km (0.099 R)
• M4: 1,630,018 km (0.066 R)
• M5: 2,348,088 km (0.094 R)
• M6: 3,485,032 km (0.081 R)
• M7: 4,189,638 km (0.059 R)
• M8: 4,835,302 km (0.075 R)
• M9: 7,146,589 km (0.113 R)
• M10: 7,894,429 km (0.096 R)
• M11: 9,348,072 km (0.059 R)
• M12: 10,327,489 km (0.082 R)
• M13: 10,929,620 km (0.071 R)
• M14: 11,555,239 km (0.111 R)
• M15: 12,063,423 km (0.091 R)
• M16: 13,832,118 km (0.062 R)
• M17: 17,036,355 km (0.08 R)
• M18: 17,574,608 km (0.109 R)
• M19: 18,496,730 km (0.091 R)
• M20: 20,706,290 km (0.073 R)
• M21: 22,511,039 km (0.116 R)
• M22: 23,820,319 km (0.076 R)
• M23: 26,114,702 km (0.08 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504.2

Radius: 10.9

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 3.86 AU - 5.44 AU

Year: 6474 Days

Day: 9.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 79,788,420 km

• M1: 135,536 km (0.088 R)
• M2: 498,011 km (0.088 R)
• M3: 1,162,974 km (0.1 R)
• M4: 1,615,507 km (0.032 R)
• M5: 2,457,594 km (0.044 R)
• M6: 2,845,800 km (0.055 R)
• M7: 3,234,156 km (0.092 R)
• M8: 3,614,135 km (0.109 R)
• M9: 5,102,335 km (0.106 R)
• M10: 5,891,314 km (0.102 R)
• M11: 6,592,778 km (0.09 R)
• M12: 7,420,653 km (0.049 R)
• M13: 8,590,658 km (0.06 R)
• M14: 11,056,928 km (0.096 R)
• M15: 12,579,984 km (0.099 R)
• M16: 14,294,077 km (0.057 R)
• M17: 16,341,772 km (0.078 R)
• M18: 17,919,132 km (0.088 R)
• M19: 19,526,860 km (0.081 R)
• M20: 22,265,698 km (0.094 R)
• M21: 23,726,970 km (0.051 R)
• M22: 24,521,185 km (0.095 R)
• M23: 27,527,953 km (0.08 R)
• M24: 31,907,879 km (0.079 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 280.1

Radius: 7.1

Gravity: 5.56 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 5.32 AU - 7.66 AU

Year: 10675 Days

Day: 20.2 Hours

Environment

Temp: -229 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 79,788,420 km

• M1: 88,263 km (0.103 R)
• M2: 809,923 km (0.114 R)
• M3: 1,161,029 km (0.026 R)
• M4: 1,966,165 km (0.106 R)
• M5: 2,408,077 km (0.057 R)
• M6: 2,815,432 km (0.112 R)
• M7: 3,311,349 km (0.115 R)
• M8: 3,603,514 km (0.083 R)
• M9: 3,864,113 km (0.09 R)
• M10: 4,214,022 km (0.065 R)
• M11: 5,064,187 km (0.114 R)
• M12: 5,765,352 km (0.103 R)
• M13: 7,510,412 km (0.109 R)
• M14: 7,780,136 km (0.049 R)
• M15: 8,257,354 km (0.112 R)
• M16: 10,175,946 km (0.101 R)
• M17: 12,373,389 km (0.059 R)
• M18: 13,245,395 km (0.114 R)
• M19: 15,172,366 km (0.068 R)
• M20: 15,854,083 km (0.099 R)
• M21: 16,234,511 km (0.118 R)
• M22: 16,491,520 km (0.104 R)
• M23: 23,999,687 km (0.112 R)
• M24: 34,029,028 km (0.095 R)
• M25: 35,195,592 km (0.09 R)
• M26: 36,060,567 km (0.101 R)
• M27: 36,829,051 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 270.5

Radius: 4.3

Gravity: 14.63 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 6.78 AU - 11.06 AU

Year: 17201 Days

Day: 21.2 Hours

Environment

Temp: -231 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 79,788,420 km

• M1: 53,556 km (0.101 R)
• M2: 241,301 km (0.062 R)
• M3: 410,497 km (0.106 R)
• M4: 597,793 km (0.069 R)
• M5: 777,161 km (0.052 R)
• M6: 1,208,751 km (0.1 R)
• M7: 1,555,967 km (0.096 R)
• M8: 2,820,817 km (0.115 R)
• M9: 3,257,045 km (0.087 R)
• M10: 3,428,634 km (0.079 R)
• M11: 4,930,447 km (0.091 R)
• M12: 5,878,448 km (0.098 R)
• M13: 7,103,804 km (0.042 R)
• M14: 7,776,097 km (0.113 R)
• M15: 11,670,279 km (0.116 R)
• M16: 13,212,035 km (0.082 R)
• M17: 14,096,009 km (0.119 R)
• M18: 14,355,711 km (0.055 R)
• M19: 17,724,954 km (0.112 R)
• M20: 18,565,245 km (0.102 R)
• M21: 25,777,957 km (0.105 R)
• M22: 26,068,925 km (0.091 R)
• M23: 26,756,028 km (0.101 R)
• M24: 26,954,544 km (0.113 R)
• M25: 27,254,189 km (0.103 R)
• M26: 29,625,614 km (0.107 R)
• M27: 30,806,989 km (0.089 R)
• M28: 33,377,828 km (0.101 R)
• M29: 38,183,061 km (0.107 R)
• M30: 49,732,915 km (0.112 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 870.1

Radius: 4.1

Gravity: 51.76 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 8.19 AU - 10.91 AU

Year: 19055 Days

Day: 17.2 Hours

Environment

Temp: -233 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 79,788,420 km

• M1: 56,548 km (0.061 R)
• M2: 289,023 km (0.074 R)
• M3: 523,742 km (0.094 R)
• M4: 810,671 km (0.113 R)
• M5: 1,085,781 km (0.08 R)
• M6: 1,420,432 km (0.118 R)
• M7: 1,691,204 km (0.107 R)
• M8: 1,820,157 km (0.032 R)
• M9: 2,118,904 km (0.056 R)
• M10: 4,566,026 km (0.064 R)
• M11: 6,302,558 km (0.093 R)
• M12: 6,705,425 km (0.066 R)
• M13: 6,889,730 km (0.044 R)
• M14: 9,091,661 km (0.099 R)
• M15: 9,489,591 km (0.098 R)
• M16: 9,722,066 km (0.062 R)
• M17: 10,078,109 km (0.083 R)
• M18: 13,317,352 km (0.096 R)
• M19: 15,851,390 km (0.099 R)
• M20: 20,467,532 km (0.046 R)
• M21: 24,033,048 km (0.091 R)
• M22: 26,934,797 km (0.096 R)
• M23: 28,710,674 km (0.037 R)
• M24: 36,312,041 km (0.101 R)
• M25: 40,418,951 km (0.032 R)
• M26: 40,571,092 km (0.082 R)
• M27: 47,819,857 km (0.105 R)
• M28: 47,990,099 km (0.108 R)
• M29: 54,020,090 km (0.113 R)
• M30: 68,631,913 km (0.099 R)
• M31: 68,848,530 km (0.098 R)
• M32: 69,283,112 km (0.045 R)
• M33: 71,483,099 km (0.09 R)
• M34: 74,640,661 km (0.091 R)
• M35: 78,361,758 km (0.061 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 155 - 16,665 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit