🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.97 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.95

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.79 AU - 1.15 AU

Year: 362 Days

Day: 44.7 Hours

Environment

Temp: 25 °C

Axial Tilt: 17.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 36,332,852 km

• M1: 156,928 km (0.092 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.63

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.31 AU - 1.53 AU

Year: 641 Days

Day: 16.3 Hours

Environment

Temp: -50 °C

Axial Tilt: 2.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 36,332,852 km

• M1: 225,145 km (0.109 R)
• M2: 385,963 km (0.117 R)

Planet 3 - Terrestrial

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.38

Radius: 0.68

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 3.53 AU - 3.95 AU

Year: 2739 Days

Day: 27.3 Hours

Environment

Temp: -138 °C

Axial Tilt: 0.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 4.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 816.6

Radius: 14.6

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 3.29 AU - 5.19 AU

Year: 3307 Days

Day: 6.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 36,332,852 km

• M1: 182,360 km (0.109 R)
• M2: 404,213 km (0.093 R)
• M3: 562,937 km (0.064 R)
• M4: 677,080 km (0.052 R)
• M5: 779,405 km (0.1 R)
• M6: 967,300 km (0.051 R)
• M7: 1,159,383 km (0.108 R)
• M8: 1,783,655 km (0.084 R)
• M9: 2,039,019 km (0.084 R)
• M10: 2,387,881 km (0.118 R)
• M11: 2,842,360 km (0.099 R)
• M12: 3,106,849 km (0.1 R)
• M13: 3,324,364 km (0.118 R)
• M14: 3,717,357 km (0.053 R)
• M15: 3,832,398 km (0.117 R)
• M16: 4,125,460 km (0.11 R)
• M17: 4,609,709 km (0.1 R)
• M18: 4,712,931 km (0.062 R)
• M19: 4,921,620 km (0.036 R)
• M20: 5,069,722 km (0.069 R)
• M21: 5,610,519 km (0.106 R)
• M22: 5,854,363 km (0.066 R)
• M23: 6,101,798 km (0.102 R)
• M24: 6,421,788 km (0.112 R)
• M25: 6,537,427 km (0.079 R)
• M26: 6,630,477 km (0.096 R)
• M27: 6,912,170 km (0.063 R)
• M28: 7,054,587 km (0.045 R)
• M29: 7,150,030 km (0.119 R)
• M30: 7,879,769 km (0.05 R)
• M31: 8,028,619 km (0.074 R)
• M32: 8,582,430 km (0.119 R)
• M33: 9,044,837 km (0.073 R)
• M34: 9,226,748 km (0.087 R)
• M35: 9,780,260 km (0.08 R)
• M36: 9,886,923 km (0.053 R)
• M37: 10,290,239 km (0.068 R)
• M38: 10,398,847 km (0.073 R)
• M39: 10,562,208 km (0.103 R)
• M40: 10,864,246 km (0.085 R)
• M41: 11,113,327 km (0.06 R)
• M42: 11,787,115 km (0.088 R)
• M43: 12,243,688 km (0.097 R)
• M44: 12,910,296 km (0.069 R)
• M45: 13,174,336 km (0.07 R)
• M46: 13,678,033 km (0.063 R)
• M47: 13,797,412 km (0.088 R)
• M48: 13,947,309 km (0.099 R)
• M49: 14,067,436 km (0.114 R)
• M50: 14,734,941 km (0.027 R)
• M51: 15,041,767 km (0.074 R)
• M52: 15,443,736 km (0.049 R)
• M53: 15,724,083 km (0.09 R)
• M54: 15,943,393 km (0.034 R)
• M55: 16,100,620 km (0.11 R)
• M56: 17,896,992 km (0.091 R)
• M57: 18,388,869 km (0.101 R)
• M58: 18,487,903 km (0.085 R)
• M59: 18,719,331 km (0.12 R)
• M60: 19,386,089 km (0.09 R)
• M61: 20,196,610 km (0.093 R)
• M62: 21,052,609 km (0.108 R)
• M63: 21,259,802 km (0.083 R)
• M64: 21,745,995 km (0.116 R)
• M65: 21,920,426 km (0.079 R)
• M66: 22,060,450 km (0.091 R)
• M67: 22,341,245 km (0.102 R)
• M68: 22,517,322 km (0.03 R)
• M69: 23,226,266 km (0.096 R)
• M70: 23,655,313 km (0.085 R)
• M71: 24,231,265 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 687.4

Radius: 14.5

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 3.58 AU - 5.28 AU

Year: 3531 Days

Day: 8.9 Hours

Environment

Temp: -130 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (70)

Outer Limit: 36,332,852 km

• M1: 207,791 km (0.107 R)
• M2: 415,134 km (0.064 R)
• M3: 678,875 km (0.118 R)
• M4: 780,452 km (0.102 R)
• M5: 1,036,713 km (0.114 R)
• M6: 1,467,106 km (0.025 R)
• M7: 1,646,474 km (0.045 R)
• M8: 1,982,471 km (0.087 R)
• M9: 2,182,184 km (0.108 R)
• M10: 2,552,588 km (0.114 R)
• M11: 2,822,164 km (0.051 R)
• M12: 2,978,045 km (0.112 R)
• M13: 3,408,139 km (0.104 R)
• M14: 3,954,321 km (0.086 R)
• M15: 4,287,475 km (0.109 R)
• M16: 4,387,257 km (0.112 R)
• M17: 4,507,982 km (0.095 R)
• M18: 4,711,735 km (0.1 R)
• M19: 4,814,807 km (0.085 R)
• M20: 4,939,572 km (0.108 R)
• M21: 5,234,729 km (0.109 R)
• M22: 5,427,560 km (0.085 R)
• M23: 5,975,837 km (0.086 R)
• M24: 6,290,740 km (0.038 R)
• M25: 6,564,953 km (0.096 R)
• M26: 7,007,314 km (0.103 R)
• M27: 7,149,133 km (0.025 R)
• M28: 7,459,548 km (0.041 R)
• M29: 7,628,444 km (0.077 R)
• M30: 8,292,360 km (0.09 R)
• M31: 8,392,291 km (0.084 R)
• M32: 8,568,068 km (0.105 R)
• M33: 9,232,133 km (0.12 R)
• M34: 9,727,901 km (0.109 R)
• M35: 10,393,611 km (0.113 R)
• M36: 10,718,388 km (0.106 R)
• M37: 10,909,425 km (0.094 R)
• M38: 11,211,912 km (0.106 R)
• M39: 11,489,266 km (0.056 R)
• M40: 12,221,248 km (0.097 R)
• M41: 12,736,763 km (0.107 R)
• M42: 13,671,001 km (0.116 R)
• M43: 13,818,954 km (0.114 R)
• M44: 14,687,818 km (0.107 R)
• M45: 14,991,502 km (0.056 R)
• M46: 15,420,100 km (0.107 R)
• M47: 15,852,886 km (0.106 R)
• M48: 15,946,235 km (0.039 R)
• M49: 16,195,765 km (0.041 R)
• M50: 16,541,037 km (0.086 R)
• M51: 16,635,732 km (0.103 R)
• M52: 17,302,939 km (0.101 R)
• M53: 17,784,943 km (0.025 R)
• M54: 17,881,882 km (0.063 R)
• M55: 18,532,633 km (0.031 R)
• M56: 19,025,857 km (0.073 R)
• M57: 19,125,041 km (0.113 R)
• M58: 19,390,278 km (0.049 R)
• M59: 19,790,452 km (0.057 R)
• M60: 20,294,597 km (0.111 R)
• M61: 20,939,214 km (0.072 R)
• M62: 21,178,421 km (0.103 R)
• M63: 21,693,935 km (0.118 R)
• M64: 21,901,427 km (0.117 R)
• M65: 22,144,225 km (0.077 R)
• M66: 22,457,782 km (0.083 R)
• M67: 22,562,650 km (0.086 R)
• M68: 22,667,668 km (0.071 R)
• M69: 23,726,521 km (0.108 R)
• M70: 23,975,901 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 45.7

Radius: 14.4

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 4.33 AU - 6.33 AU

Year: 4661 Days

Day: 5.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (51)

Outer Limit: 36,332,852 km

• M1: 219,161 km (0.079 R)
• M2: 311,612 km (0.067 R)
• M3: 420,220 km (0.06 R)
• M4: 532,120 km (0.101 R)
• M5: 669,450 km (0.044 R)
• M6: 840,890 km (0.082 R)
• M7: 1,014,274 km (0.074 R)
• M8: 1,117,047 km (0.095 R)
• M9: 1,415,345 km (0.066 R)
• M10: 2,213,450 km (0.118 R)
• M11: 2,340,608 km (0.069 R)
• M12: 2,685,282 km (0.117 R)
• M13: 2,853,280 km (0.085 R)
• M14: 3,035,790 km (0.107 R)
• M15: 3,446,436 km (0.093 R)
• M16: 3,687,438 km (0.086 R)
• M17: 3,792,605 km (0.095 R)
• M18: 3,898,670 km (0.087 R)
• M19: 4,419,420 km (0.091 R)
• M20: 4,719,962 km (0.04 R)
• M21: 4,859,836 km (0.112 R)
• M22: 5,118,042 km (0.037 R)
• M23: 5,209,447 km (0.106 R)
• M24: 5,540,357 km (0.092 R)
• M25: 5,634,305 km (0.106 R)
• M26: 6,015,480 km (0.03 R)
• M27: 6,335,021 km (0.094 R)
• M28: 6,503,917 km (0.112 R)
• M29: 6,745,667 km (0.115 R)
• M30: 7,106,946 km (0.08 R)
• M31: 7,370,837 km (0.109 R)
• M32: 7,504,128 km (0.118 R)
• M33: 7,623,208 km (0.063 R)
• M34: 7,772,956 km (0.11 R)
• M35: 7,938,860 km (0.076 R)
• M36: 8,105,961 km (0.098 R)
• M37: 8,228,182 km (0.087 R)
• M38: 8,895,987 km (0.111 R)
• M39: 9,085,527 km (0.087 R)
• M40: 9,228,543 km (0.118 R)
• M41: 9,484,655 km (0.102 R)
• M42: 9,662,078 km (0.05 R)
• M43: 9,971,147 km (0.099 R)
• M44: 10,118,800 km (0.107 R)
• M45: 10,233,990 km (0.12 R)
• M46: 10,449,262 km (0.107 R)
• M47: 10,699,689 km (0.073 R)
• M48: 10,800,368 km (0.114 R)
• M49: 10,935,006 km (0.088 R)
• M50: 11,087,297 km (0.049 R)
• M51: 11,342,660 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 171.2

Radius: 11.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 7.81 AU - 11.13 AU

Year: 11038 Days

Day: 13.7 Hours

Environment

Temp: -176 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 36,332,852 km

• M1: 145,260 km (0.083 R)
• M2: 311,014 km (0.07 R)
• M3: 536,009 km (0.072 R)
• M4: 996,621 km (0.105 R)
• M5: 1,683,874 km (0.119 R)
• M6: 1,862,045 km (0.055 R)
• M7: 2,065,498 km (0.096 R)
• M8: 2,761,128 km (0.114 R)
• M9: 3,037,136 km (0.08 R)
• M10: 3,167,585 km (0.113 R)
• M11: 3,731,569 km (0.112 R)
• M12: 3,989,775 km (0.075 R)
• M13: 4,205,346 km (0.047 R)
• M14: 5,003,002 km (0.103 R)
• M15: 6,257,679 km (0.115 R)
• M16: 7,252,505 km (0.104 R)
• M17: 7,427,983 km (0.091 R)
• M18: 7,634,578 km (0.101 R)
• M19: 9,227,795 km (0.096 R)
• M20: 11,189,173 km (0.037 R)
• M21: 11,802,075 km (0.087 R)
• M22: 12,043,377 km (0.097 R)
• M23: 12,565,922 km (0.095 R)
• M24: 13,274,268 km (0.11 R)
• M25: 13,489,390 km (0.112 R)
• M26: 13,777,964 km (0.092 R)
• M27: 14,141,487 km (0.102 R)
• M28: 14,287,793 km (0.098 R)
• M29: 15,740,538 km (0.109 R)
• M30: 16,158,814 km (0.031 R)
• M31: 16,426,893 km (0.085 R)
• M32: 17,789,281 km (0.112 R)
• M33: 18,464,117 km (0.117 R)
• M34: 18,704,371 km (0.106 R)
• M35: 19,634,571 km (0.063 R)
• M36: 20,828,960 km (0.096 R)
• M37: 21,750,633 km (0.093 R)
• M38: 23,287,452 km (0.112 R)
• M39: 23,373,919 km (0.052 R)
• M40: 24,156,316 km (0.119 R)
• M41: 25,301,787 km (0.06 R)
• M42: 27,371,324 km (0.098 R)
• M43: 27,553,983 km (0.082 R)
• M44: 27,691,015 km (0.115 R)
• M45: 28,657,567 km (0.085 R)
• M46: 28,889,294 km (0.065 R)
• M47: 29,121,769 km (0.039 R)
• M48: 30,010,380 km (0.111 R)
• M49: 31,098,106 km (0.071 R)
• M50: 31,575,024 km (0.097 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 779.9

Radius: 4.8

Gravity: 33.85 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 13.13 AU - 16.65 AU

Year: 21762 Days

Day: 16.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 36,332,852 km

• M1: 297,251 km (0.076 R)
• M2: 518,057 km (0.028 R)
• M3: 1,924,726 km (0.041 R)
• M4: 2,031,988 km (0.101 R)
• M5: 2,327,444 km (0.089 R)
• M6: 2,917,458 km (0.099 R)
• M7: 2,958,298 km (0.119 R)
• M8: 3,378,070 km (0.112 R)
• M9: 4,087,762 km (0.112 R)
• M10: 4,225,841 km (0.071 R)
• M11: 4,365,565 km (0.104 R)
• M12: 4,506,636 km (0.097 R)
• M13: 4,601,631 km (0.101 R)
• M14: 4,745,244 km (0.042 R)
• M15: 5,998,875 km (0.079 R)
• M16: 6,473,848 km (0.112 R)
• M17: 6,688,970 km (0.099 R)
• M18: 6,851,732 km (0.09 R)
• M19: 7,403,748 km (0.104 R)
• M20: 8,374,638 km (0.111 R)
• M21: 9,023,893 km (0.089 R)
• M22: 9,750,490 km (0.088 R)
• M23: 10,120,745 km (0.09 R)
• M24: 11,130,680 km (0.117 R)
• M25: 13,380,632 km (0.081 R)
• M26: 13,585,731 km (0.044 R)
• M27: 14,137,896 km (0.095 R)
• M28: 14,207,310 km (0.107 R)
• M29: 14,556,621 km (0.083 R)
• M30: 14,626,932 km (0.098 R)
• M31: 14,908,774 km (0.101 R)
• M32: 14,979,534 km (0.027 R)
• M33: 15,693,415 km (0.078 R)
• M34: 16,126,950 km (0.066 R)
• M35: 19,812,144 km (0.119 R)
• M36: 20,045,965 km (0.091 R)
• M37: 21,547,479 km (0.083 R)
• M38: 22,271,383 km (0.038 R)
• M39: 23,166,726 km (0.08 R)
• M40: 23,577,672 km (0.09 R)
• M41: 24,074,037 km (0.083 R)
• M42: 24,157,064 km (0.043 R)
• M43: 24,406,743 km (0.095 R)
• M44: 24,573,694 km (0.099 R)
• M45: 25,668,152 km (0.109 R)
• M46: 26,008,039 km (0.076 R)
• M47: 27,469,311 km (0.112 R)
• M48: 29,577,145 km (0.081 R)
• M49: 30,470,693 km (0.066 R)
• M50: 31,191,904 km (0.095 R)
• M51: 31,918,650 km (0.057 R)
• M52: 32,101,309 km (0.089 R)
• M53: 32,927,090 km (0.108 R)
• M54: 33,481,499 km (0.069 R)
• M55: 35,351,922 km (0.086 R)
• M56: 36,109,485 km (0.11 R)
• M57: 36,395,068 km (0.119 R)
• M58: 36,585,805 km (0.073 R)
• M59: 37,544,428 km (0.091 R)
• M60: 37,737,110 km (0.082 R)
• M61: 37,833,601 km (0.056 R)
• M62: 38,414,190 km (0.052 R)
• M63: 39,095,309 km (0.077 R)
• M64: 39,780,467 km (0.109 R)
• M65: 40,075,325 km (0.116 R)
• M66: 40,272,345 km (0.114 R)
• M67: 46,845,975 km (0.101 R)
• M68: 47,990,847 km (0.049 R)
• M69: 49,144,845 km (0.092 R)
• M70: 50,626,911 km (0.1 R)
• M71: 51,053,116 km (0.09 R)
• M72: 51,480,367 km (0.069 R)
• M73: 51,908,816 km (0.114 R)
• M74: 52,769,452 km (0.067 R)
• M75: 52,877,312 km (0.11 R)
• M76: 56,368,777 km (0.027 R)
• M77: 56,920,943 km (0.114 R)
• M78: 59,933,844 km (0.029 R)
• M79: 61,971,068 km (0.107 R)
• M80: 63,341,683 km (0.052 R)
• M81: 63,571,166 km (0.032 R)
• M82: 66,578,682 km (0.096 R)
• M83: 68,805,596 km (0.071 R)
• M84: 69,159,544 km (0.115 R)
• M85: 70,106,050 km (0.072 R)
• M86: 71,772,870 km (0.109 R)
• M87: 72,731,044 km (0.06 R)
• M88: 79,185,893 km (0.098 R)
• M89: 79,928,048 km (0.09 R)
• M90: 80,424,114 km (0.072 R)
• M91: 80,672,597 km (0.088 R)
• M92: 81,544,004 km (0.099 R)
• M93: 81,918,448 km (0.095 R)
• M94: 82,168,426 km (0.092 R)
• M95: 82,794,343 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 35.6

Radius: 4.3

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 14.91 AU - 21.11 AU

Year: 28948 Days

Day: 23 Hours

Environment

Temp: -195 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 36,332,852 km

• M1: 66,272 km (0.104 R)
• M2: 113,545 km (0.099 R)
• M3: 214,374 km (0.097 R)
• M4: 668,553 km (0.107 R)
• M5: 783,743 km (0.093 R)
• M6: 1,833,023 km (0.073 R)
• M7: 1,873,115 km (0.111 R)
• M8: 2,245,913 km (0.114 R)
• M9: 2,353,623 km (0.035 R)
• M10: 2,397,156 km (0.094 R)
• M11: 2,484,970 km (0.076 R)
• M12: 2,618,860 km (0.109 R)
• M13: 3,058,080 km (0.089 R)
• M14: 3,105,652 km (0.105 R)
• M15: 3,495,055 km (0.106 R)
• M16: 3,695,516 km (0.119 R)
• M17: 3,873,986 km (0.06 R)
• M18: 4,780,250 km (0.094 R)
• M19: 5,058,802 km (0.104 R)
• M20: 5,228,446 km (0.092 R)
• M21: 5,371,162 km (0.118 R)
• M22: 5,689,955 km (0.052 R)
• M23: 6,436,897 km (0.111 R)
• M24: 7,792,104 km (0.031 R)
• M25: 8,152,486 km (0.098 R)
• M26: 8,619,081 km (0.079 R)
• M27: 9,128,462 km (0.027 R)
• M28: 10,034,427 km (0.08 R)
• M29: 10,318,812 km (0.079 R)
• M30: 10,354,566 km (0.097 R)
• M31: 10,642,093 km (0.111 R)
• M32: 11,409,082 km (0.103 R)
• M33: 11,631,534 km (0.087 R)
• M34: 12,231,571 km (0.046 R)
• M35: 12,649,996 km (0.107 R)
• M36: 12,764,887 km (0.118 R)
• M37: 13,814,615 km (0.095 R)
• M38: 15,297,729 km (0.064 R)
• M39: 16,914,582 km (0.116 R)
• M40: 17,380,430 km (0.108 R)
• M41: 17,550,822 km (0.102 R)
• M42: 18,584,992 km (0.056 R)
• M43: 18,672,058 km (0.11 R)
• M44: 19,153,315 km (0.102 R)
• M45: 21,803,740 km (0.063 R)
• M46: 24,661,957 km (0.103 R)
• M47: 25,334,399 km (0.051 R)
• M48: 25,818,498 km (0.072 R)
• M49: 26,158,983 km (0.099 R)
• M50: 26,697,236 km (0.11 R)
• M51: 26,795,522 km (0.062 R)
• M52: 28,634,828 km (0.117 R)
• M53: 28,685,093 km (0.089 R)
• M54: 29,544,383 km (0.106 R)
• M55: 30,053,614 km (0.116 R)
• M56: 30,155,789 km (0.104 R)
• M57: 30,309,426 km (0.11 R)
• M58: 30,771,534 km (0.086 R)
• M59: 31,598,960 km (0.111 R)
• M60: 31,754,990 km (0.087 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 461 - 11,446 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit