🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.08

Radius: 1.03

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.73 AU - 0.75 AU

Year: 225 Days

Day: 18.5 Hours

Environment

Temp: 189 °C

Axial Tilt: 34.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.27 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.23

Radius: 1.38

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 1.01 AU - 1.53 AU

Year: 505 Days

Day: 44.4 Hours

Environment

Temp: 4 °C

Axial Tilt: 28.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.46 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.05

Radius: 1.02

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 1.29 AU - 1.63 AU

Year: 623 Days

Day: 43.4 Hours

Environment

Temp: 10 °C

Axial Tilt: 29 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 75,400,042 km

• M1: 23,936 km (0.045 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.54 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.13

Radius: 1.35

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.2 AU - 1.88 AU

Year: 675 Days

Day: 33.8 Hours

Environment

Temp: 3 °C

Axial Tilt: 49.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 75,400,042 km

• M1: 159,322 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 8.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 749.2

Radius: 10.9

Gravity: 6.31 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 7.58 AU - 9.56 AU

Year: 8859 Days

Day: 6.4 Hours

Environment

Temp: -172 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 75,400,042 km

• M1: 135,536 km (0.054 R)
• M2: 709,991 km (0.042 R)
• M3: 1,399,039 km (0.113 R)
• M4: 2,219,434 km (0.12 R)
• M5: 3,822,674 km (0.062 R)
• M6: 4,911,298 km (0.101 R)
• M7: 6,303,007 km (0.116 R)
• M8: 6,707,520 km (0.067 R)
• M9: 7,090,341 km (0.044 R)
• M10: 8,197,365 km (0.052 R)
• M11: 8,769,876 km (0.086 R)
• M12: 10,193,001 km (0.049 R)
• M13: 11,600,567 km (0.05 R)
• M14: 12,322,676 km (0.097 R)
• M15: 13,252,277 km (0.106 R)
• M16: 13,918,137 km (0.084 R)
• M17: 16,597,884 km (0.041 R)
• M18: 19,604,203 km (0.083 R)
• M19: 27,929,174 km (0.094 R)
• M20: 44,471,557 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 161.4

Radius: 13.2

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 9.02 AU - 13.72 AU

Year: 13538 Days

Day: 9.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 75,400,042 km

• M1: 164,408 km (0.043 R)
• M2: 591,660 km (0.119 R)
• M3: 1,071,270 km (0.086 R)
• M4: 1,961,527 km (0.117 R)
• M5: 3,236,400 km (0.119 R)
• M6: 3,767,024 km (0.088 R)
• M7: 4,381,273 km (0.077 R)
• M8: 5,176,984 km (0.093 R)
• M9: 5,906,573 km (0.036 R)
• M10: 10,068,685 km (0.064 R)
• M11: 11,059,920 km (0.091 R)
• M12: 12,747,833 km (0.036 R)
• M13: 17,811,122 km (0.106 R)
• M14: 20,122,410 km (0.082 R)
• M15: 21,388,008 km (0.119 R)
• M16: 25,247,932 km (0.039 R)
• M17: 27,883,248 km (0.089 R)
• M18: 35,477,584 km (0.061 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 856.4

Radius: 3.6

Gravity: 66.08 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 12.54 AU - 20.2 AU

Year: 23387 Days

Day: 19.1 Hours

Environment

Temp: -183 °C

Axial Tilt: 15.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 75,400,042 km

• M1: 44,879 km (0.12 R)
• M2: 201,957 km (0.079 R)
• M3: 549,024 km (0.111 R)
• M4: 678,426 km (0.096 R)
• M5: 1,552,527 km (0.11 R)
• M6: 1,977,534 km (0.072 R)
• M7: 5,908,368 km (0.116 R)
• M8: 6,450,660 km (0.061 R)
• M9: 6,733,999 km (0.072 R)
• M10: 7,843,865 km (0.08 R)
• M11: 12,830,860 km (0.106 R)
• M12: 18,343,541 km (0.118 R)
• M13: 20,888,949 km (0.072 R)
• M14: 23,438,546 km (0.091 R)
• M15: 25,133,190 km (0.1 R)
• M16: 27,028,745 km (0.099 R)
• M17: 27,150,368 km (0.106 R)
• M18: 28,637,520 km (0.069 R)
• M19: 30,703,766 km (0.05 R)
• M20: 31,638,154 km (0.08 R)
• M21: 38,407,757 km (0.074 R)
• M22: 41,076,135 km (0.111 R)
• M23: 41,236,803 km (0.108 R)
• M24: 42,537,556 km (0.116 R)
• M25: 46,081,530 km (0.109 R)
• M26: 55,693,193 km (0.108 R)
• M27: 57,481,635 km (0.09 R)
• M28: 62,863,120 km (0.11 R)
• M29: 63,719,717 km (0.102 R)
• M30: 65,895,169 km (0.066 R)
• M31: 68,570,428 km (0.114 R)
• M32: 69,706,175 km (0.068 R)
• M33: 70,164,094 km (0.04 R)
• M34: 71,085,617 km (0.11 R)
• M35: 74,613,584 km (0.059 R)
• M36: 79,247,378 km (0.118 R)
• M37: 87,213,315 km (0.11 R)
• M38: 87,744,836 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 20.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 220.6

Radius: 5.3

Gravity: 7.85 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 16.72 AU - 23.76 AU

Year: 32152 Days

Day: 18.6 Hours

Environment

Temp: -202 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 75,400,042 km

• M1: 65,973 km (0.112 R)
• M2: 257,907 km (0.103 R)
• M3: 958,773 km (0.094 R)
• M4: 1,156,541 km (0.119 R)
• M5: 1,996,533 km (0.118 R)
• M6: 3,543,076 km (0.107 R)
• M7: 4,439,466 km (0.047 R)
• M8: 4,851,459 km (0.107 R)
• M9: 5,594,063 km (0.067 R)
• M10: 6,367,185 km (0.096 R)
• M11: 6,980,835 km (0.106 R)
• M12: 7,442,644 km (0.099 R)
• M13: 10,120,296 km (0.115 R)
• M14: 16,296,594 km (0.113 R)
• M15: 29,277,799 km (0.099 R)
• M16: 36,540,327 km (0.057 R)
• M17: 43,516,674 km (0.034 R)
• M18: 45,707,086 km (0.037 R)
• M19: 51,330,470 km (0.101 R)
• M20: 55,929,258 km (0.07 R)
• M21: 68,611,268 km (0.111 R)
• M22: 69,870,284 km (0.073 R)

Planet 9 - Ice Giant

Semi-Major Axis: 20.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 241.1

Radius: 4

Gravity: 15.07 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 17.91 AU - 23.49 AU

Year: 33255 Days

Day: 24.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 75,400,042 km

• M1: 49,816 km (0.102 R)
• M2: 176,675 km (0.118 R)
• M3: 446,699 km (0.07 R)
• M4: 1,015,171 km (0.062 R)
• M5: 2,382,496 km (0.033 R)
• M6: 2,708,619 km (0.114 R)
• M7: 2,985,226 km (0.094 R)
• M8: 3,743,986 km (0.112 R)
• M9: 6,251,994 km (0.104 R)
• M10: 6,644,988 km (0.066 R)
• M11: 7,147,487 km (0.063 R)
• M12: 7,384,001 km (0.092 R)
• M13: 12,113,538 km (0.094 R)
• M14: 13,211,736 km (0.094 R)
• M15: 14,374,560 km (0.054 R)
• M16: 14,904,137 km (0.102 R)
• M17: 17,576,852 km (0.091 R)
• M18: 19,343,005 km (0.061 R)
• M19: 23,637,960 km (0.102 R)
• M20: 26,791,183 km (0.107 R)
• M21: 29,603,923 km (0.034 R)
• M22: 32,996,354 km (0.109 R)
• M23: 34,583,886 km (0.08 R)
• M24: 38,773,973 km (0.119 R)
• M25: 39,064,791 km (0.104 R)
• M26: 41,292,303 km (0.059 R)
• M27: 41,443,697 km (0.079 R)
• M28: 51,223,957 km (0.106 R)
• M29: 52,990,558 km (0.09 R)
• M30: 54,069,607 km (0.1 R)
• M31: 56,086,037 km (0.098 R)

Kuiper Belt

Range: 31.1 - 47.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 424 - 16,868 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit