🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.99

Radius: 1

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.52 AU - 0.56 AU

Year: 256 Days

Day: 46.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 20.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 749.7

Radius: 13.9

Gravity: 3.88 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.78 AU - 0.78 AU

Year: 445 Days

Day: 14.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 39,612,042 km

• M1: 172,935 km (0.106 R)
• M2: 675,883 km (0.097 R)
• M3: 1,449,155 km (0.089 R)
• M4: 1,890,319 km (0.12 R)
• M5: 2,914,316 km (0.042 R)
• M6: 4,685,705 km (0.056 R)
• M7: 5,846,584 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 307.6

Radius: 12.8

Gravity: 1.88 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.99 AU - 1.55 AU

Year: 924 Days

Day: 13.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 139.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,612,042 km

• M1: 159,322 km (0.071 R)
• M2: 584,778 km (0.104 R)
• M3: 1,302,698 km (0.109 R)
• M4: 2,417,651 km (0.068 R)
• M5: 2,969,219 km (0.074 R)
• M6: 3,793,503 km (0.117 R)
• M7: 4,403,713 km (0.105 R)
• M8: 4,961,563 km (0.106 R)
• M9: 5,656,595 km (0.059 R)
• M10: 6,258,577 km (0.108 R)
• M11: 7,134,472 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 201

Radius: 12.8

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 1.15 AU - 1.51 AU

Year: 990 Days

Day: 7.3 Hours

Environment

Temp: -167 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 39,612,042 km

• M1: 159,471 km (0.094 R)
• M2: 642,074 km (0.105 R)
• M3: 1,425,069 km (0.039 R)
• M4: 2,135,210 km (0.082 R)
• M5: 2,728,366 km (0.108 R)
• M6: 3,294,893 km (0.111 R)
• M7: 4,176,922 km (0.116 R)
• M8: 5,045,936 km (0.039 R)
• M9: 6,503,618 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.7

Radius: 11.4

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 3.01 AU - 4.47 AU

Year: 4670 Days

Day: 9.7 Hours

Environment

Temp: -212 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,612,042 km

• M1: 141,819 km (0.061 R)
• M2: 1,513,930 km (0.095 R)
• M3: 2,027,051 km (0.102 R)
• M4: 4,483,598 km (0.065 R)
• M5: 5,470,345 km (0.096 R)
• M6: 9,225,551 km (0.082 R)
• M7: 10,019,617 km (0.091 R)
• M8: 10,602,151 km (0.067 R)
• M9: 13,112,253 km (0.094 R)
• M10: 15,771,954 km (0.059 R)
• M11: 20,905,255 km (0.067 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 729.1

Radius: 14.8

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 3.65 AU - 4.25 AU

Year: 5069 Days

Day: 7.1 Hours

Environment

Temp: -220 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 39,612,042 km

• M1: 184,005 km (0.104 R)
• M2: 684,859 km (0.042 R)
• M3: 1,150,707 km (0.104 R)
• M4: 1,615,059 km (0.113 R)
• M5: 2,362,898 km (0.09 R)
• M6: 2,927,930 km (0.109 R)
• M7: 3,778,393 km (0.08 R)
• M8: 4,238,706 km (0.087 R)
• M9: 5,054,164 km (0.1 R)
• M10: 5,674,098 km (0.085 R)
• M11: 7,448,777 km (0.109 R)
• M12: 8,103,268 km (0.078 R)
• M13: 8,995,320 km (0.106 R)
• M14: 9,611,813 km (0.09 R)
• M15: 11,160,450 km (0.112 R)
• M16: 11,632,282 km (0.066 R)
• M17: 12,265,380 km (0.084 R)
• M18: 13,232,081 km (0.1 R)
• M19: 13,814,765 km (0.094 R)
• M20: 14,525,205 km (0.072 R)
• M21: 16,378,573 km (0.067 R)
• M22: 18,061,250 km (0.105 R)
• M23: 18,844,993 km (0.12 R)
• M24: 19,312,636 km (0.112 R)
• M25: 20,621,019 km (0.103 R)
• M26: 22,881,742 km (0.117 R)
• M27: 27,805,158 km (0.08 R)
• M28: 30,835,263 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942

Radius: 9.2

Gravity: 11.13 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 4.8 AU - 5.1 AU

Year: 7111 Days

Day: 10 Hours

Environment

Temp: -209 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 39,612,042 km

• M1: 116,986 km (0.105 R)
• M2: 409,449 km (0.053 R)
• M3: 707,149 km (0.091 R)
• M4: 1,608,925 km (0.096 R)
• M5: 2,607,341 km (0.1 R)
• M6: 2,969,667 km (0.064 R)
• M7: 3,552,650 km (0.114 R)
• M8: 4,975,924 km (0.097 R)
• M9: 5,536,318 km (0.059 R)
• M10: 8,506,434 km (0.066 R)
• M11: 9,262,203 km (0.039 R)
• M12: 11,320,819 km (0.111 R)
• M13: 12,512,815 km (0.065 R)
• M14: 13,139,331 km (0.073 R)
• M15: 13,489,838 km (0.091 R)
• M16: 15,465,278 km (0.054 R)
• M17: 15,790,504 km (0.077 R)
• M18: 17,137,334 km (0.061 R)
• M19: 17,767,739 km (0.109 R)
• M20: 23,636,763 km (0.059 R)
• M21: 25,485,942 km (0.079 R)
• M22: 33,960,512 km (0.068 R)
• M23: 35,290,437 km (0.059 R)
• M24: 38,290,772 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 184.2

Radius: 6.5

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 5.32 AU - 6.76 AU

Year: 9585 Days

Day: 22.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 39,612,042 km

• M1: 112,647 km (0.097 R)
• M2: 343,028 km (0.1 R)
• M3: 549,473 km (0.065 R)
• M4: 3,194,962 km (0.09 R)
• M5: 3,460,648 km (0.09 R)
• M6: 4,274,011 km (0.071 R)
• M7: 17,922,423 km (0.082 R)
• M8: 19,159,149 km (0.038 R)
• M9: 20,382,411 km (0.086 R)
• M10: 23,133,964 km (0.119 R)
• M11: 24,441,599 km (0.084 R)
• M12: 25,233,271 km (0.104 R)
• M13: 28,745,979 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 416.7

Radius: 3

Gravity: 46.3 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 4.67 AU - 7.45 AU

Year: 9632 Days

Day: 21 Hours

Environment

Temp: -214 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 39,612,042 km

• M1: 48,171 km (0.118 R)
• M2: 143,614 km (0.1 R)
• M3: 238,609 km (0.039 R)
• M4: 425,157 km (0.12 R)
• M5: 716,873 km (0.074 R)
• M6: 1,160,131 km (0.084 R)
• M7: 1,620,295 km (0.076 R)
• M8: 1,778,120 km (0.056 R)
• M9: 1,961,677 km (0.093 R)
• M10: 3,548,312 km (0.069 R)
• M11: 4,496,463 km (0.065 R)
• M12: 6,373,318 km (0.041 R)
• M13: 7,024,518 km (0.072 R)
• M14: 8,000,943 km (0.111 R)
• M15: 13,265,442 km (0.12 R)
• M16: 13,437,629 km (0.11 R)
• M17: 15,879,664 km (0.077 R)
• M18: 16,732,971 km (0.104 R)
• M19: 17,547,232 km (0.087 R)
• M20: 22,829,533 km (0.12 R)
• M21: 25,297,000 km (0.077 R)
• M22: 34,398,086 km (0.102 R)
• M23: 34,832,069 km (0.073 R)
• M24: 35,490,000 km (0.092 R)
• M25: 36,379,958 km (0.101 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 436 - 17,164 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit