🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.29

Radius: 0.61

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.52 AU - 0.84 AU

Year: 200 Days

Day: 31.1 Hours

Environment

Temp: 151 °C

Axial Tilt: 25.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 53,278,828 km

• M1: 56,099 km (0.107 R)
• M2: 67,319 km (0.062 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.2

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 1.48 AU - 1.64 AU

Year: 695 Days

Day: 29.2 Hours

Environment

Temp: -36 °C

Axial Tilt: 66.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.57

Radius: 1.66

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.75 AU - 2.57 AU

Year: 1132 Days

Day: 19.4 Hours

Environment

Temp: -64 °C

Axial Tilt: 31.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 53,278,828 km

• M1: 583,581 km (0.076 R)
• M2: 1,097,749 km (0.027 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.48

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 1.96 AU - 3.06 AU

Year: 1417 Days

Day: 23.3 Hours

Environment

Temp: -84 °C

Axial Tilt: 56.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 53,278,828 km

• M1: 1,075,609 km (0.086 R)
• M2: 1,778,270 km (0.107 R)

Planet 5 - Terrestrial

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.46

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 3.69 AU - 5.29 AU

Year: 3391 Days

Day: 16.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 39.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 60.6

Radius: 8.2

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 6.35 AU - 9.09 AU

Year: 7646 Days

Day: 7.6 Hours

Environment

Temp: -155 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 53,278,828 km

• M1: 163,959 km (0.114 R)
• M2: 223,200 km (0.067 R)
• M3: 503,696 km (0.116 R)
• M4: 613,650 km (0.106 R)
• M5: 812,616 km (0.102 R)
• M6: 1,052,122 km (0.108 R)
• M7: 1,259,764 km (0.112 R)
• M8: 1,503,459 km (0.118 R)
• M9: 1,847,534 km (0.097 R)
• M10: 2,047,845 km (0.11 R)
• M11: 3,226,228 km (0.101 R)
• M12: 3,286,067 km (0.07 R)
• M13: 3,452,719 km (0.119 R)
• M14: 3,575,688 km (0.105 R)
• M15: 3,810,258 km (0.065 R)
• M16: 4,310,663 km (0.11 R)
• M17: 5,213,935 km (0.054 R)
• M18: 6,285,953 km (0.11 R)
• M19: 6,493,146 km (0.045 R)
• M20: 6,741,030 km (0.106 R)
• M21: 7,030,950 km (0.104 R)
• M22: 7,167,533 km (0.113 R)
• M23: 7,423,794 km (0.106 R)
• M24: 7,743,335 km (0.105 R)
• M25: 7,924,947 km (0.049 R)
• M26: 8,272,014 km (0.118 R)
• M27: 8,416,376 km (0.114 R)
• M28: 9,129,360 km (0.089 R)
• M29: 9,214,630 km (0.101 R)
• M30: 9,278,658 km (0.09 R)
• M31: 9,861,791 km (0.087 R)
• M32: 10,456,742 km (0.072 R)
• M33: 11,063,211 km (0.105 R)
• M34: 12,310,409 km (0.071 R)
• M35: 13,650,207 km (0.078 R)
• M36: 14,287,943 km (0.055 R)
• M37: 14,660,292 km (0.067 R)
• M38: 15,111,330 km (0.103 R)
• M39: 15,898,663 km (0.075 R)
• M40: 15,949,975 km (0.101 R)
• M41: 16,310,357 km (0.112 R)
• M42: 16,647,401 km (0.106 R)
• M43: 16,699,461 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328.7

Radius: 8.6

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 8.11 AU - 11.61 AU

Year: 11036 Days

Day: 9.9 Hours

Environment

Temp: -173 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 53,278,828 km

• M1: 113,545 km (0.12 R)
• M2: 391,348 km (0.114 R)
• M3: 694,433 km (0.091 R)
• M4: 784,641 km (0.088 R)
• M5: 1,894,507 km (0.102 R)
• M6: 2,617,065 km (0.098 R)
• M7: 3,058,080 km (0.091 R)
• M8: 3,390,935 km (0.088 R)
• M9: 3,522,132 km (0.099 R)
• M10: 3,628,347 km (0.099 R)
• M11: 3,681,903 km (0.042 R)
• M12: 3,762,536 km (0.104 R)
• M13: 3,925,897 km (0.107 R)
• M14: 4,008,325 km (0.062 R)
• M15: 4,063,677 km (0.116 R)
• M16: 4,231,226 km (0.1 R)
• M17: 4,315,899 km (0.113 R)
• M18: 4,401,169 km (0.092 R)
• M19: 4,486,889 km (0.037 R)
• M20: 5,102,933 km (0.104 R)
• M21: 5,283,946 km (0.115 R)
• M22: 6,348,784 km (0.064 R)
• M23: 7,038,879 km (0.104 R)
• M24: 7,478,098 km (0.099 R)
• M25: 8,668,299 km (0.065 R)
• M26: 9,065,930 km (0.087 R)
• M27: 9,841,446 km (0.075 R)
• M28: 9,953,943 km (0.101 R)
• M29: 10,446,569 km (0.116 R)
• M30: 10,830,886 km (0.088 R)
• M31: 11,971,719 km (0.085 R)
• M32: 12,252,664 km (0.069 R)
• M33: 12,617,234 km (0.034 R)
• M34: 13,232,829 km (0.032 R)
• M35: 13,606,824 km (0.109 R)
• M36: 13,900,185 km (0.109 R)
• M37: 14,578,462 km (0.099 R)
• M38: 16,232,117 km (0.118 R)
• M39: 16,543,281 km (0.11 R)
• M40: 16,632,441 km (0.105 R)
• M41: 17,216,471 km (0.075 R)
• M42: 17,761,606 km (0.09 R)
• M43: 18,036,267 km (0.077 R)
• M44: 18,312,275 km (0.079 R)
• M45: 19,477,643 km (0.059 R)
• M46: 20,331,398 km (0.108 R)
• M47: 20,426,991 km (0.092 R)
• M48: 20,666,796 km (0.084 R)
• M49: 21,052,310 km (0.026 R)
• M50: 21,781,450 km (0.12 R)
• M51: 22,469,451 km (0.107 R)
• M52: 22,716,885 km (0.096 R)
• M53: 22,915,551 km (0.081 R)
• M54: 23,364,644 km (0.115 R)
• M55: 23,464,725 km (0.07 R)
• M56: 23,565,105 km (0.073 R)
• M57: 23,665,486 km (0.117 R)
• M58: 24,018,237 km (0.09 R)
• M59: 24,728,977 km (0.108 R)
• M60: 25,086,965 km (0.067 R)
• M61: 26,223,160 km (0.103 R)
• M62: 26,379,341 km (0.07 R)
• M63: 26,692,748 km (0.059 R)
• M64: 27,007,352 km (0.047 R)
• M65: 27,481,578 km (0.089 R)
• M66: 27,852,281 km (0.071 R)
• M67: 27,958,496 km (0.102 R)
• M68: 28,171,373 km (0.115 R)
• M69: 29,028,270 km (0.091 R)
• M70: 30,220,565 km (0.115 R)
• M71: 31,042,456 km (0.069 R)
• M72: 31,594,621 km (0.066 R)
• M73: 33,608,807 km (0.101 R)
• M74: 34,688,605 km (0.089 R)
• M75: 34,745,751 km (0.119 R)
• M76: 35,433,901 km (0.038 R)
• M77: 36,532,698 km (0.081 R)
• M78: 36,940,352 km (0.12 R)
• M79: 37,232,367 km (0.114 R)
• M80: 37,407,995 km (0.114 R)
• M81: 37,466,637 km (0.106 R)
• M82: 37,877,732 km (0.102 R)
• M83: 38,408,505 km (0.1 R)
• M84: 38,941,672 km (0.034 R)
• M85: 39,001,062 km (0.109 R)
• M86: 39,238,923 km (0.103 R)
• M87: 39,358,003 km (0.107 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 724.9

Radius: 9.6

Gravity: 7.87 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 9.91 AU - 10.63 AU

Year: 11731 Days

Day: 13.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 53,278,828 km

• M1: 133,142 km (0.1 R)
• M2: 689,497 km (0.055 R)
• M3: 799,750 km (0.067 R)
• M4: 997,219 km (0.114 R)
• M5: 1,123,480 km (0.117 R)
• M6: 1,439,281 km (0.038 R)
• M7: 1,607,579 km (0.088 R)
• M8: 2,206,120 km (0.083 R)
• M9: 2,838,470 km (0.105 R)
• M10: 3,081,866 km (0.029 R)
• M11: 3,143,799 km (0.049 R)
• M12: 3,524,227 km (0.066 R)
• M13: 4,433,183 km (0.084 R)
• M14: 4,503,345 km (0.115 R)
• M15: 5,041,299 km (0.033 R)
• M16: 5,225,154 km (0.113 R)
• M17: 5,828,483 km (0.101 R)
• M18: 5,944,122 km (0.111 R)
• M19: 6,099,404 km (0.118 R)
• M20: 6,693,757 km (0.101 R)
• M21: 7,473,162 km (0.09 R)
• M22: 7,641,010 km (0.055 R)
• M23: 7,767,570 km (0.114 R)
• M24: 7,895,028 km (0.102 R)
• M25: 7,980,298 km (0.095 R)
• M26: 8,108,803 km (0.078 R)
• M27: 8,367,906 km (0.092 R)
• M28: 8,673,685 km (0.068 R)
• M29: 9,612,860 km (0.069 R)
• M30: 10,725,419 km (0.064 R)
• M31: 11,441,395 km (0.05 R)
• M32: 11,927,289 km (0.089 R)
• M33: 12,123,561 km (0.094 R)
• M34: 12,271,364 km (0.078 R)
• M35: 12,370,248 km (0.106 R)
• M36: 15,034,287 km (0.12 R)
• M37: 16,267,123 km (0.113 R)
• M38: 16,375,881 km (0.119 R)
• M39: 16,868,207 km (0.119 R)
• M40: 17,309,820 km (0.085 R)
• M41: 18,092,067 km (0.102 R)
• M42: 19,229,310 km (0.101 R)
• M43: 19,344,351 km (0.093 R)
• M44: 20,039,084 km (0.112 R)
• M45: 21,453,232 km (0.112 R)
• M46: 21,572,611 km (0.117 R)
• M47: 23,326,946 km (0.073 R)
• M48: 23,572,585 km (0.091 R)
• M49: 24,314,441 km (0.036 R)
• M50: 24,688,286 km (0.109 R)
• M51: 25,441,661 km (0.105 R)
• M52: 26,394,001 km (0.057 R)
• M53: 27,552,038 km (0.102 R)
• M54: 28,072,190 km (0.071 R)
• M55: 29,386,407 km (0.042 R)
• M56: 29,518,951 km (0.081 R)
• M57: 30,184,512 km (0.116 R)
• M58: 32,074,531 km (0.103 R)
• M59: 32,279,331 km (0.081 R)
• M60: 34,770,285 km (0.077 R)
• M61: 35,755,537 km (0.111 R)
• M62: 36,393,721 km (0.104 R)
• M63: 36,678,705 km (0.099 R)
• M64: 36,892,780 km (0.074 R)
• M65: 38,475,824 km (0.075 R)
• M66: 39,057,012 km (0.111 R)
• M67: 39,934,254 km (0.069 R)
• M68: 40,817,929 km (0.08 R)
• M69: 41,113,833 km (0.102 R)
• M70: 41,188,034 km (0.086 R)
• M71: 42,379,730 km (0.1 R)
• M72: 42,604,426 km (0.074 R)
• M73: 42,904,669 km (0.029 R)
• M74: 44,416,505 km (0.091 R)
• M75: 44,797,082 km (0.114 R)
• M76: 45,868,802 km (0.109 R)
• M77: 46,253,567 km (0.054 R)
• M78: 46,794,064 km (0.12 R)
• M79: 47,725,461 km (0.095 R)
• M80: 48,976,847 km (0.084 R)
• M81: 49,527,666 km (0.037 R)
• M82: 50,318,141 km (0.042 R)
• M83: 53,037,083 km (0.118 R)
• M84: 53,198,499 km (0.058 R)
• M85: 53,683,645 km (0.09 R)
• M86: 53,764,727 km (0.109 R)
• M87: 53,926,891 km (0.051 R)

Planet 9 - Ice Giant

Semi-Major Axis: 13.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 980.4

Radius: 4.7

Gravity: 44.38 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 11.58 AU - 15.26 AU

Year: 17524 Days

Day: 17.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 53,278,828 km

• M1: 65,524 km (0.05 R)
• M2: 686,056 km (0.037 R)
• M3: 1,968,558 km (0.092 R)
• M4: 2,843,108 km (0.049 R)
• M5: 3,735,908 km (0.068 R)
• M6: 3,778,393 km (0.113 R)
• M7: 3,863,963 km (0.062 R)
• M8: 4,168,245 km (0.069 R)
• M9: 4,256,658 km (0.08 R)
• M10: 4,846,223 km (0.115 R)
• M11: 5,412,750 km (0.112 R)
• M12: 5,509,241 km (0.099 R)
• M13: 5,752,936 km (0.096 R)
• M14: 6,200,383 km (0.11 R)
• M15: 6,814,333 km (0.104 R)
• M16: 8,431,934 km (0.071 R)
• M17: 8,825,676 km (0.116 R)
• M18: 8,939,221 km (0.041 R)
• M19: 9,282,997 km (0.106 R)
• M20: 9,340,741 km (0.101 R)
• M21: 9,398,636 km (0.11 R)
• M22: 9,456,530 km (0.029 R)
• M23: 10,459,883 km (0.06 R)
• M24: 10,519,872 km (0.083 R)
• M25: 11,065,605 km (0.098 R)
• M26: 11,126,790 km (0.061 R)
• M27: 11,311,095 km (0.082 R)
• M28: 13,273,819 km (0.086 R)
• M29: 13,600,092 km (0.101 R)
• M30: 13,665,765 km (0.054 R)
• M31: 13,731,439 km (0.063 R)
• M32: 13,929,058 km (0.067 R)
• M33: 14,394,008 km (0.091 R)
• M34: 14,661,938 km (0.083 R)
• M35: 15,134,817 km (0.098 R)
• M36: 15,612,632 km (0.057 R)
• M37: 16,164,948 km (0.096 R)
• M38: 16,934,629 km (0.089 R)
• M39: 18,727,709 km (0.069 R)
• M40: 20,730,974 km (0.085 R)
• M41: 21,033,461 km (0.084 R)
• M42: 21,261,298 km (0.064 R)
• M43: 21,873,004 km (0.104 R)
• M44: 23,584,404 km (0.085 R)
• M45: 23,742,080 km (0.057 R)
• M46: 24,535,996 km (0.034 R)
• M47: 24,936,170 km (0.081 R)
• M48: 25,661,869 km (0.074 R)
• M49: 25,986,646 km (0.039 R)
• M50: 26,231,089 km (0.056 R)
• M51: 27,216,640 km (0.088 R)
• M52: 27,464,972 km (0.1 R)
• M53: 27,713,903 km (0.11 R)
• M54: 28,381,708 km (0.084 R)
• M55: 28,801,629 km (0.077 R)
• M56: 30,502,258 km (0.098 R)
• M57: 32,497,594 km (0.037 R)
• M58: 33,732,824 km (0.089 R)
• M59: 34,445,508 km (0.114 R)
• M60: 34,983,163 km (0.08 R)
• M61: 36,430,821 km (0.105 R)
• M62: 37,990,080 km (0.058 R)
• M63: 38,452,786 km (0.114 R)
• M64: 39,197,185 km (0.093 R)
• M65: 39,664,828 km (0.11 R)
• M66: 41,839,383 km (0.079 R)
• M67: 42,125,863 km (0.116 R)
• M68: 42,604,875 km (0.119 R)
• M69: 43,278,365 km (0.117 R)
• M70: 46,303,383 km (0.115 R)
• M71: 47,592,019 km (0.119 R)
• M72: 49,496,550 km (0.115 R)
• M73: 50,813,909 km (0.118 R)
• M74: 50,915,785 km (0.07 R)
• M75: 51,425,914 km (0.088 R)
• M76: 54,730,381 km (0.114 R)
• M77: 57,253,499 km (0.071 R)
• M78: 58,422,456 km (0.12 R)
• M79: 59,277,558 km (0.109 R)
• M80: 61,867,845 km (0.12 R)
• M81: 62,739,402 km (0.108 R)
• M82: 64,164,322 km (0.074 R)
• M83: 64,384,530 km (0.092 R)
• M84: 64,715,141 km (0.11 R)
• M85: 67,269,375 km (0.112 R)
• M86: 69,630,179 km (0.112 R)
• M87: 71,105,214 km (0.099 R)
• M88: 72,934,647 km (0.117 R)
• M89: 73,279,470 km (0.063 R)
• M90: 73,970,612 km (0.084 R)
• M91: 74,548,209 km (0.118 R)
• M92: 75,824,130 km (0.103 R)
• M93: 76,639,887 km (0.09 R)
• M94: 77,341,351 km (0.114 R)

Planet 10 - Ice Giant

Semi-Major Axis: 20.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 88.9

Radius: 8

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 19.52 AU - 21.02 AU

Year: 32529 Days

Day: 24.3 Hours

Environment

Temp: -198 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (70)

Outer Limit: 53,278,828 km

• M1: 124,166 km (0.064 R)
• M2: 227,987 km (0.075 R)
• M3: 322,383 km (0.093 R)
• M4: 881,131 km (0.035 R)
• M5: 960,568 km (0.046 R)
• M6: 1,235,678 km (0.101 R)
• M7: 1,934,749 km (0.091 R)
• M8: 2,649,827 km (0.111 R)
• M9: 3,066,158 km (0.079 R)
• M10: 3,250,911 km (0.064 R)
• M11: 3,376,125 km (0.089 R)
• M12: 3,728,727 km (0.094 R)
• M13: 3,794,101 km (0.096 R)
• M14: 3,892,985 km (0.025 R)
• M15: 4,434,380 km (0.038 R)
• M16: 5,107,870 km (0.099 R)
• M17: 5,364,131 km (0.089 R)
• M18: 5,737,378 km (0.058 R)
• M19: 6,746,864 km (0.098 R)
• M20: 7,028,108 km (0.109 R)
• M21: 7,518,939 km (0.085 R)
• M22: 7,643,404 km (0.079 R)
• M23: 7,726,730 km (0.048 R)
• M24: 9,057,104 km (0.092 R)
• M25: 9,456,530 km (0.092 R)
• M26: 10,043,552 km (0.091 R)
• M27: 12,704,450 km (0.065 R)
• M28: 12,852,851 km (0.092 R)
• M29: 13,351,610 km (0.067 R)
• M30: 13,603,383 km (0.09 R)
• M31: 14,885,736 km (0.111 R)
• M32: 15,304,161 km (0.097 R)
• M33: 15,779,583 km (0.12 R)
• M34: 16,259,793 km (0.078 R)
• M35: 16,313,498 km (0.101 R)
• M36: 17,289,475 km (0.046 R)
• M37: 17,398,980 km (0.089 R)
• M38: 18,339,951 km (0.076 R)
• M39: 18,788,595 km (0.102 R)
• M40: 18,957,641 km (0.109 R)
• M41: 20,909,594 km (0.093 R)
• M42: 21,968,597 km (0.117 R)
• M43: 23,589,639 km (0.108 R)
• M44: 24,199,700 km (0.055 R)
• M45: 24,445,190 km (0.082 R)
• M46: 24,876,780 km (0.115 R)
• M47: 25,622,674 km (0.067 R)
• M48: 25,935,484 km (0.081 R)
• M49: 28,548,809 km (0.033 R)
• M50: 29,394,785 km (0.066 R)
• M51: 31,981,631 km (0.107 R)
• M52: 32,385,994 km (0.106 R)
• M53: 33,063,822 km (0.082 R)
• M54: 34,089,316 km (0.118 R)
• M55: 34,640,434 km (0.111 R)
• M56: 35,264,108 km (0.1 R)
• M57: 35,961,383 km (0.108 R)
• M58: 36,733,458 km (0.114 R)
• M59: 37,866,512 km (0.086 R)
• M60: 38,080,138 km (0.11 R)
• M61: 39,659,592 km (0.094 R)
• M62: 42,882,080 km (0.116 R)
• M63: 44,224,422 km (0.103 R)
• M64: 44,599,763 km (0.097 R)
• M65: 45,504,830 km (0.095 R)
• M66: 45,959,607 km (0.097 R)
• M67: 47,179,728 km (0.081 R)
• M68: 49,651,982 km (0.095 R)
• M69: 50,589,811 km (0.111 R)
• M70: 50,668,350 km (0.11 R)

Kuiper Belt

Range: 30.8 - 58.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 366 - 16,598 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit