🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 883.7

Radius: 13.1

Gravity: 5.15 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.71 AU - 1.17 AU

Year: 618 Days

Day: 5.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (47)

Outer Limit: 61,869,941 km

• M1: 166,652 km (0.12 R)
• M2: 249,679 km (0.086 R)
• M3: 411,993 km (0.088 R)
• M4: 528,978 km (0.072 R)
• M5: 728,242 km (0.118 R)
• M6: 814,560 km (0.099 R)
• M7: 937,829 km (0.116 R)
• M8: 1,114,654 km (0.084 R)
• M9: 1,228,947 km (0.07 R)
• M10: 1,347,428 km (0.074 R)
• M11: 1,443,919 km (0.12 R)
• M12: 1,596,508 km (0.075 R)
• M13: 1,692,251 km (0.096 R)
• M14: 1,804,150 km (0.115 R)
• M15: 2,177,846 km (0.073 R)
• M16: 2,261,770 km (0.12 R)
• M17: 2,378,008 km (0.109 R)
• M18: 2,512,197 km (0.071 R)
• M19: 2,863,154 km (0.088 R)
• M20: 3,040,427 km (0.04 R)
• M21: 3,160,704 km (0.105 R)
• M22: 3,317,782 km (0.042 R)
• M23: 3,406,044 km (0.064 R)
• M24: 3,513,156 km (0.093 R)
• M25: 3,795,148 km (0.101 R)
• M26: 3,906,449 km (0.041 R)
• M27: 4,084,770 km (0.084 R)
• M28: 4,208,338 km (0.079 R)
• M29: 4,352,550 km (0.06 R)
• M30: 4,785,037 km (0.116 R)
• M31: 5,026,788 km (0.086 R)
• M32: 5,210,943 km (0.079 R)
• M33: 5,345,132 km (0.081 R)
• M34: 5,543,648 km (0.041 R)
• M35: 5,659,587 km (0.111 R)
• M36: 5,744,558 km (0.066 R)
• M37: 6,110,175 km (0.12 R)
• M38: 6,240,924 km (0.119 R)
• M39: 6,494,492 km (0.098 R)
• M40: 6,841,559 km (0.097 R)
• M41: 7,023,022 km (0.12 R)
• M42: 7,171,722 km (0.07 R)
• M43: 7,367,695 km (0.051 R)
• M44: 7,659,261 km (0.091 R)
• M45: 7,847,755 km (0.113 R)
• M46: 8,049,861 km (0.048 R)
• M47: 8,145,604 km (0.111 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280.5

Radius: 14.3

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 1.56 AU - 2.38 AU

Year: 1875 Days

Day: 6.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (47)

Outer Limit: 61,869,941 km

• M1: 223,200 km (0.093 R)
• M2: 334,052 km (0.115 R)
• M3: 477,666 km (0.071 R)
• M4: 643,271 km (0.093 R)
• M5: 734,825 km (0.046 R)
• M6: 885,470 km (0.11 R)
• M7: 1,099,096 km (0.086 R)
• M8: 1,189,602 km (0.063 R)
• M9: 1,306,737 km (0.098 R)
• M10: 1,403,527 km (0.085 R)
• M11: 1,553,424 km (0.103 R)
• M12: 1,682,826 km (0.075 R)
• M13: 2,121,747 km (0.108 R)
• M14: 2,266,408 km (0.107 R)
• M15: 2,374,717 km (0.066 R)
• M16: 2,474,798 km (0.077 R)
• M17: 2,566,052 km (0.085 R)
• M18: 2,731,059 km (0.105 R)
• M19: 2,899,955 km (0.092 R)
• M20: 3,104,904 km (0.119 R)
• M21: 3,772,410 km (0.063 R)
• M22: 3,949,384 km (0.106 R)
• M23: 4,080,731 km (0.064 R)
• M24: 4,274,759 km (0.067 R)
• M25: 4,434,530 km (0.086 R)
• M26: 4,546,429 km (0.112 R)
• M27: 4,734,922 km (0.112 R)
• M28: 4,874,946 km (0.103 R)
• M29: 5,080,942 km (0.115 R)
• M30: 5,369,068 km (0.094 R)
• M31: 5,770,738 km (0.086 R)
• M32: 6,182,282 km (0.03 R)
• M33: 6,335,470 km (0.095 R)
• M34: 6,975,898 km (0.11 R)
• M35: 7,091,986 km (0.095 R)
• M36: 7,296,636 km (0.062 R)
• M37: 7,429,180 km (0.101 R)
• M38: 7,907,145 km (0.111 R)
• M39: 8,226,387 km (0.105 R)
• M40: 8,349,057 km (0.107 R)
• M41: 9,034,963 km (0.079 R)
• M42: 9,257,116 km (0.1 R)
• M43: 9,513,078 km (0.106 R)
• M44: 10,577,317 km (0.068 R)
• M45: 10,862,002 km (0.053 R)
• M46: 11,421,648 km (0.079 R)
• M47: 11,524,571 km (0.06 R)

Planet 3 - Gas Giant

Semi-Major Axis: 5.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 140.5

Radius: 12.1

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 5.21 AU - 5.21 AU

Year: 8066 Days

Day: 10 Hours

Environment

Temp: -221 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 61,869,941 km

• M1: 199,713 km (0.084 R)
• M2: 303,085 km (0.104 R)
• M3: 464,501 km (0.111 R)
• M4: 591,660 km (0.089 R)
• M5: 743,202 km (0.053 R)
• M6: 920,326 km (0.09 R)
• M7: 1,384,977 km (0.111 R)
• M8: 1,466,807 km (0.041 R)
• M9: 1,650,364 km (0.119 R)
• M10: 1,737,729 km (0.093 R)
• M11: 2,119,054 km (0.12 R)
• M12: 2,198,490 km (0.116 R)
• M13: 2,311,586 km (0.114 R)
• M14: 2,476,443 km (0.065 R)
• M15: 2,645,339 km (0.057 R)
• M16: 3,012,752 km (0.082 R)
• M17: 3,120,761 km (0.101 R)
• M18: 3,229,968 km (0.101 R)
• M19: 3,415,170 km (0.116 R)
• M20: 3,508,968 km (0.074 R)
• M21: 3,584,814 km (0.094 R)
• M22: 3,776,598 km (0.052 R)
• M23: 3,893,434 km (0.085 R)
• M24: 4,011,317 km (0.094 R)
• M25: 4,210,731 km (0.117 R)
• M26: 4,413,287 km (0.036 R)
• M27: 4,557,200 km (0.062 R)
• M28: 4,786,234 km (0.113 R)
• M29: 5,234,429 km (0.07 R)
• M30: 5,607,078 km (0.117 R)
• M31: 5,740,669 km (0.099 R)
• M32: 6,308,991 km (0.079 R)
• M33: 6,705,725 km (0.116 R)
• M34: 6,895,265 km (0.114 R)
• M35: 7,207,027 km (0.114 R)
• M36: 7,352,586 km (0.049 R)
• M37: 7,450,124 km (0.052 R)
• M38: 8,094,741 km (0.061 R)
• M39: 8,423,707 km (0.091 R)
• M40: 8,577,194 km (0.089 R)
• M41: 8,860,682 km (0.087 R)
• M42: 9,226,149 km (0.095 R)
• M43: 10,215,739 km (0.063 R)
• M44: 10,599,009 km (0.108 R)
• M45: 11,014,891 km (0.096 R)
• M46: 11,098,666 km (0.11 R)
• M47: 11,805,516 km (0.081 R)
• M48: 11,948,532 km (0.09 R)
• M49: 12,178,763 km (0.096 R)
• M50: 13,262,599 km (0.1 R)
• M51: 13,590,667 km (0.081 R)
• M52: 14,194,295 km (0.096 R)
• M53: 14,775,782 km (0.068 R)
• M54: 15,521,377 km (0.027 R)
• M55: 15,741,286 km (0.072 R)
• M56: 15,867,248 km (0.114 R)
• M57: 16,215,811 km (0.103 R)
• M58: 16,791,314 km (0.054 R)
• M59: 17,406,311 km (0.08 R)
• M60: 17,929,754 km (0.115 R)
• M61: 18,061,549 km (0.105 R)
• M62: 18,491,793 km (0.038 R)
• M63: 18,724,866 km (0.069 R)
• M64: 18,858,457 km (0.094 R)
• M65: 19,497,539 km (0.082 R)
• M66: 20,143,802 km (0.088 R)
• M67: 21,178,271 km (0.104 R)
• M68: 21,561,990 km (0.065 R)
• M69: 22,089,023 km (0.089 R)
• M70: 23,155,506 km (0.112 R)
• M71: 23,370,927 km (0.091 R)
• M72: 23,839,767 km (0.037 R)

Planet 4 - Ice Giant

Semi-Major Axis: 6.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 696

Radius: 4.5

Gravity: 34.37 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 5.16 AU - 8.02 AU

Year: 11474 Days

Day: 20.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (98)

Outer Limit: 61,869,941 km

• M1: 143,315 km (0.072 R)
• M2: 228,137 km (0.097 R)
• M3: 1,075,309 km (0.114 R)
• M4: 1,205,310 km (0.07 R)
• M5: 1,294,770 km (0.048 R)
• M6: 1,456,784 km (0.078 R)
• M7: 1,600,847 km (0.115 R)
• M8: 1,649,765 km (0.087 R)
• M9: 1,876,705 km (0.083 R)
• M10: 2,500,379 km (0.064 R)
• M11: 2,702,037 km (0.076 R)
• M12: 3,090,393 km (0.046 R)
• M13: 3,182,396 km (0.065 R)
• M14: 3,244,329 km (0.072 R)
• M15: 3,432,523 km (0.115 R)
• M16: 3,527,967 km (0.083 R)
• M17: 3,591,994 km (0.102 R)
• M18: 4,288,073 km (0.087 R)
• M19: 4,598,938 km (0.052 R)
• M20: 4,739,410 km (0.096 R)
• M21: 4,917,132 km (0.098 R)
• M22: 5,169,504 km (0.11 R)
• M23: 5,989,600 km (0.087 R)
• M24: 6,143,087 km (0.111 R)
• M25: 6,259,025 km (0.106 R)
• M26: 6,414,757 km (0.112 R)
• M27: 8,083,072 km (0.055 R)
• M28: 8,210,081 km (0.07 R)
• M29: 8,466,342 km (0.09 R)
• M30: 9,338,946 km (0.086 R)
• M31: 9,516,818 km (0.086 R)
• M32: 10,148,420 km (0.064 R)
• M33: 10,331,379 km (0.119 R)
• M34: 10,515,384 km (0.095 R)
• M35: 12,268,521 km (0.086 R)
• M36: 12,905,509 km (0.088 R)
• M37: 13,203,209 km (0.104 R)
• M38: 13,253,025 km (0.045 R)
• M39: 13,704,362 km (0.08 R)
• M40: 13,754,776 km (0.114 R)
• M41: 13,855,904 km (0.116 R)
• M42: 14,058,909 km (0.049 R)
• M43: 14,109,772 km (0.104 R)
• M44: 14,211,648 km (0.058 R)
• M45: 14,673,606 km (0.046 R)
• M46: 14,776,829 km (0.084 R)
• M47: 15,088,142 km (0.114 R)
• M48: 15,244,771 km (0.062 R)
• M49: 16,035,246 km (0.092 R)
• M50: 17,109,808 km (0.098 R)
• M51: 17,986,152 km (0.037 R)
• M52: 18,429,859 km (0.07 R)
• M53: 18,541,310 km (0.12 R)
• M54: 18,708,859 km (0.118 R)
• M55: 19,441,141 km (0.066 R)
• M56: 19,668,230 km (0.08 R)
• M57: 20,355,034 km (0.076 R)
• M58: 20,470,225 km (0.114 R)
• M59: 21,282,840 km (0.105 R)
• M60: 21,987,745 km (0.069 R)
• M61: 22,165,169 km (0.108 R)
• M62: 22,283,800 km (0.034 R)
• M63: 22,939,487 km (0.111 R)
• M64: 24,026,316 km (0.1 R)
• M65: 24,270,011 km (0.081 R)
• M66: 24,453,418 km (0.099 R)
• M67: 25,191,384 km (0.105 R)
• M68: 25,315,101 km (0.119 R)
• M69: 26,815,418 km (0.096 R)
• M70: 28,860,272 km (0.087 R)
• M71: 29,184,301 km (0.112 R)
• M72: 29,444,302 km (0.025 R)
• M73: 29,509,377 km (0.114 R)
• M74: 30,954,642 km (0.081 R)
• M75: 32,153,968 km (0.116 R)
• M76: 32,624,603 km (0.099 R)
• M77: 32,759,391 km (0.086 R)
• M78: 34,118,188 km (0.092 R)
• M79: 37,877,582 km (0.089 R)
• M80: 37,948,492 km (0.081 R)
• M81: 38,232,279 km (0.045 R)
• M82: 38,445,755 km (0.114 R)
• M83: 38,944,963 km (0.099 R)
• M84: 39,950,111 km (0.096 R)
• M85: 40,528,307 km (0.097 R)
• M86: 41,985,839 km (0.061 R)
• M87: 42,794,715 km (0.098 R)
• M88: 43,831,727 km (0.088 R)
• M89: 45,854,739 km (0.085 R)
• M90: 46,005,833 km (0.111 R)
• M91: 46,232,773 km (0.119 R)
• M92: 46,308,470 km (0.109 R)
• M93: 47,678,487 km (0.08 R)
• M94: 48,061,458 km (0.089 R)
• M95: 50,848,466 km (0.099 R)
• M96: 51,474,832 km (0.108 R)
• M97: 51,553,371 km (0.112 R)
• M98: 52,103,742 km (0.095 R)

Planet 5 - Ice Giant

Semi-Major Axis: 8.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 490.7

Radius: 7

Gravity: 10.01 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 7.37 AU - 9.79 AU

Year: 17046 Days

Day: 21.1 Hours

Environment

Temp: -237 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 61,869,941 km

• M1: 420,669 km (0.114 R)
• M2: 487,240 km (0.092 R)
• M3: 749,934 km (0.092 R)
• M4: 811,718 km (0.111 R)
• M5: 1,655,300 km (0.097 R)
• M6: 1,709,754 km (0.102 R)
• M7: 1,764,656 km (0.082 R)
• M8: 2,019,571 km (0.103 R)
• M9: 2,226,016 km (0.083 R)
• M10: 2,377,709 km (0.074 R)
• M11: 2,885,743 km (0.094 R)
• M12: 2,984,627 km (0.085 R)
• M13: 3,426,539 km (0.083 R)
• M14: 4,332,953 km (0.105 R)
• M15: 4,446,498 km (0.105 R)
• M16: 4,676,579 km (0.107 R)
• M17: 4,832,161 km (0.087 R)
• M18: 4,989,388 km (0.053 R)
• M19: 5,759,518 km (0.119 R)
• M20: 7,498,294 km (0.027 R)
• M21: 7,818,134 km (0.113 R)
• M22: 8,518,552 km (0.093 R)
• M23: 8,708,690 km (0.107 R)
• M24: 8,900,325 km (0.087 R)
• M25: 9,631,111 km (0.106 R)
• M26: 9,680,628 km (0.058 R)
• M27: 9,729,995 km (0.078 R)
• M28: 11,098,068 km (0.086 R)
• M29: 11,514,847 km (0.089 R)
• M30: 11,725,182 km (0.112 R)
• M31: 12,149,591 km (0.115 R)
• M32: 12,850,008 km (0.047 R)
• M33: 13,841,393 km (0.039 R)
• M34: 14,914,309 km (0.107 R)
• M35: 14,971,605 km (0.111 R)
• M36: 15,374,173 km (0.03 R)
• M37: 15,721,988 km (0.075 R)
• M38: 16,425,547 km (0.112 R)
• M39: 17,863,033 km (0.114 R)
• M40: 17,923,919 km (0.109 R)
• M41: 19,402,993 km (0.115 R)
• M42: 19,716,102 km (0.108 R)
• M43: 19,967,725 km (0.114 R)
• M44: 20,601,422 km (0.083 R)
• M45: 20,729,029 km (0.091 R)
• M46: 20,856,786 km (0.107 R)
• M47: 21,113,196 km (0.081 R)
• M48: 22,871,270 km (0.099 R)
• M49: 22,937,243 km (0.117 R)
• M50: 23,135,610 km (0.113 R)
• M51: 23,268,303 km (0.075 R)
• M52: 24,338,078 km (0.052 R)
• M53: 25,560,591 km (0.072 R)
• M54: 26,179,328 km (0.117 R)
• M55: 26,386,820 km (0.077 R)
• M56: 26,803,151 km (0.09 R)
• M57: 27,081,852 km (0.098 R)
• M58: 28,065,159 km (0.095 R)
• M59: 28,348,198 km (0.118 R)
• M60: 31,377,256 km (0.104 R)
• M61: 31,818,270 km (0.063 R)
• M62: 31,892,022 km (0.054 R)
• M63: 31,965,774 km (0.096 R)
• M64: 33,153,731 km (0.063 R)
• M65: 33,527,875 km (0.099 R)
• M66: 37,813,405 km (0.112 R)
• M67: 38,361,232 km (0.055 R)
• M68: 38,439,622 km (0.117 R)
• M69: 38,596,699 km (0.092 R)
• M70: 38,675,388 km (0.083 R)
• M71: 39,781,515 km (0.114 R)
• M72: 39,860,951 km (0.111 R)
• M73: 40,658,008 km (0.053 R)
• M74: 40,738,043 km (0.108 R)
• M75: 41,702,052 km (0.105 R)
• M76: 43,325,488 km (0.06 R)
• M77: 43,407,169 km (0.092 R)
• M78: 44,638,957 km (0.107 R)
• M79: 45,632,586 km (0.033 R)
• M80: 45,882,265 km (0.092 R)
• M81: 46,132,243 km (0.117 R)
• M82: 47,389,165 km (0.083 R)
• M83: 49,338,126 km (0.062 R)
• M84: 49,423,397 km (0.05 R)
• M85: 50,107,807 km (0.093 R)
• M86: 52,266,803 km (0.073 R)
• M87: 53,226,324 km (0.081 R)
• M88: 54,279,792 km (0.116 R)
• M89: 54,456,019 km (0.117 R)
• M90: 56,496,384 km (0.083 R)
• M91: 57,032,842 km (0.118 R)
• M92: 57,211,910 km (0.086 R)
• M93: 58,381,167 km (0.091 R)
• M94: 60,012,981 km (0.107 R)
• M95: 60,195,191 km (0.075 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 254.2

Radius: 3.1

Gravity: 26.45 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 10.63 AU - 10.97 AU

Year: 24073 Days

Day: 22.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 61,869,941 km

• M1: 100,380 km (0.069 R)
• M2: 312,809 km (0.077 R)
• M3: 478,564 km (0.094 R)
• M4: 709,244 km (0.075 R)
• M5: 750,682 km (0.105 R)
• M6: 771,775 km (0.105 R)
• M7: 970,142 km (0.114 R)
• M8: 2,172,460 km (0.067 R)
• M9: 2,202,679 km (0.094 R)
• M10: 2,263,715 km (0.081 R)
• M11: 3,594,837 km (0.028 R)
• M12: 6,073,973 km (0.038 R)
• M13: 6,332,029 km (0.114 R)
• M14: 6,462,478 km (0.079 R)
• M15: 7,399,410 km (0.073 R)
• M16: 7,582,667 km (0.098 R)
• M17: 9,150,603 km (0.098 R)
• M18: 9,794,771 km (0.11 R)
• M19: 11,973,664 km (0.03 R)
• M20: 12,242,791 km (0.055 R)
• M21: 12,622,620 km (0.073 R)
• M22: 13,061,689 km (0.051 R)
• M23: 13,172,093 km (0.049 R)
• M24: 13,449,746 km (0.066 R)
• M25: 13,617,296 km (0.09 R)
• M26: 15,388,385 km (0.101 R)
• M27: 15,680,849 km (0.094 R)
• M28: 16,152,381 km (0.115 R)
• M29: 16,330,403 km (0.119 R)
• M30: 16,509,172 km (0.073 R)
• M31: 17,351,707 km (0.103 R)
• M32: 17,961,917 km (0.03 R)
• M33: 18,208,006 km (0.116 R)
• M34: 18,765,856 km (0.053 R)
• M35: 19,329,092 km (0.061 R)
• M36: 20,600,824 km (0.067 R)
• M37: 20,987,534 km (0.101 R)
• M38: 22,359,945 km (0.082 R)
• M39: 22,691,005 km (0.112 R)
• M40: 23,761,079 km (0.099 R)
• M41: 25,534,711 km (0.087 R)
• M42: 26,158,384 km (0.116 R)
• M43: 27,068,388 km (0.056 R)
• M44: 27,775,238 km (0.029 R)
• M45: 28,559,879 km (0.1 R)
• M46: 29,135,083 km (0.085 R)
• M47: 29,351,850 km (0.086 R)
• M48: 29,641,621 km (0.042 R)
• M49: 31,030,787 km (0.073 R)
• M50: 31,770,399 km (0.038 R)
• M51: 32,217,098 km (0.082 R)
• M52: 33,418,070 km (0.12 R)
• M53: 33,644,860 km (0.068 R)
• M54: 35,631,819 km (0.107 R)
• M55: 36,873,332 km (0.107 R)
• M56: 36,951,422 km (0.111 R)
• M57: 37,813,854 km (0.066 R)
• M58: 38,682,868 km (0.101 R)
• M59: 39,718,235 km (0.04 R)
• M60: 40,843,510 km (0.112 R)
• M61: 42,550,870 km (0.082 R)
• M62: 43,372,163 km (0.065 R)
• M63: 45,197,107 km (0.104 R)
• M64: 46,118,929 km (0.075 R)
• M65: 46,793,316 km (0.108 R)
• M66: 49,523,178 km (0.102 R)
• M67: 50,473,424 km (0.101 R)
• M68: 51,516,869 km (0.061 R)
• M69: 53,359,915 km (0.104 R)
• M70: 53,448,178 km (0.093 R)
• M71: 53,536,590 km (0.104 R)
• M72: 53,625,002 km (0.034 R)
• M73: 59,017,108 km (0.069 R)
• M74: 59,657,387 km (0.105 R)
• M75: 59,749,090 km (0.098 R)
• M76: 59,840,794 km (0.094 R)
• M77: 60,668,220 km (0.115 R)
• M78: 61,777,189 km (0.071 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 475 - 16,735 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit