🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 814.6

Radius: 8.8

Gravity: 10.52 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.62 AU - 0.92 AU

Year: 451 Days

Day: 11 Hours

Environment

Temp: -157 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (52)

Outer Limit: 46,578,674 km

• M1: 115,789 km (0.09 R)
• M2: 182,210 km (0.11 R)
• M3: 241,900 km (0.104 R)
• M4: 409,150 km (0.062 R)
• M5: 498,909 km (0.118 R)
• M6: 636,988 km (0.082 R)
• M7: 700,417 km (0.102 R)
• M8: 766,091 km (0.1 R)
• M9: 857,196 km (0.086 R)
• M10: 923,318 km (0.116 R)
• M11: 996,172 km (0.1 R)
• M12: 1,066,034 km (0.074 R)
• M13: 1,174,194 km (0.071 R)
• M14: 1,237,623 km (0.086 R)
• M15: 1,296,864 km (0.112 R)
• M16: 1,457,682 km (0.074 R)
• M17: 1,738,626 km (0.049 R)
• M18: 1,805,347 km (0.111 R)
• M19: 1,904,231 km (0.118 R)
• M20: 1,973,196 km (0.087 R)
• M21: 2,081,505 km (0.066 R)
• M22: 2,211,505 km (0.115 R)
• M23: 2,411,518 km (0.086 R)
• M24: 2,500,080 km (0.093 R)
• M25: 2,765,317 km (0.074 R)
• M26: 2,851,036 km (0.102 R)
• M27: 2,944,834 km (0.059 R)
• M28: 3,039,679 km (0.036 R)
• M29: 3,143,051 km (0.083 R)
• M30: 3,210,071 km (0.103 R)
• M31: 3,292,799 km (0.111 R)
• M32: 3,514,054 km (0.064 R)
• M33: 3,599,175 km (0.088 R)
• M34: 3,669,486 km (0.08 R)
• M35: 3,779,590 km (0.053 R)
• M36: 3,866,955 km (0.088 R)
• M37: 4,084,321 km (0.102 R)
• M38: 4,141,318 km (0.092 R)
• M39: 4,198,464 km (0.118 R)
• M40: 4,455,324 km (0.084 R)
• M41: 4,657,730 km (0.052 R)
• M42: 4,751,528 km (0.062 R)
• M43: 4,889,008 km (0.079 R)
• M44: 4,949,595 km (0.092 R)
• M45: 5,027,835 km (0.116 R)
• M46: 5,132,853 km (0.082 R)
• M47: 5,291,875 km (0.094 R)
• M48: 5,407,664 km (0.076 R)
• M49: 5,470,345 km (0.106 R)
• M50: 5,650,760 km (0.094 R)
• M51: 5,824,144 km (0.112 R)
• M52: 6,194,698 km (0.1 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.6

Radius: 9.9

Gravity: 5.87 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.83 AU - 1.03 AU

Year: 598 Days

Day: 9.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 46,578,674 km

• M1: 124,166 km (0.098 R)
• M2: 188,045 km (0.08 R)
• M3: 271,071 km (0.115 R)
• M4: 344,524 km (0.108 R)
• M5: 463,903 km (0.048 R)
• M6: 525,687 km (0.045 R)
• M7: 590,912 km (0.039 R)
• M8: 708,196 km (0.112 R)
• M9: 829,071 km (0.103 R)
• M10: 931,995 km (0.077 R)
• M11: 997,967 km (0.071 R)
• M12: 1,189,752 km (0.104 R)
• M13: 1,335,759 km (0.082 R)
• M14: 1,493,884 km (0.087 R)
• M15: 1,602,941 km (0.113 R)
• M16: 1,702,125 km (0.106 R)
• M17: 1,854,864 km (0.119 R)
• M18: 2,059,065 km (0.045 R)
• M19: 2,133,266 km (0.102 R)
• M20: 2,201,482 km (0.098 R)
• M21: 2,326,396 km (0.081 R)
• M22: 2,425,131 km (0.114 R)
• M23: 2,496,489 km (0.062 R)
• M24: 2,722,532 km (0.118 R)
• M25: 2,789,252 km (0.073 R)
• M26: 2,886,940 km (0.114 R)
• M27: 2,978,045 km (0.119 R)
• M28: 3,062,418 km (0.061 R)
• M29: 3,217,850 km (0.062 R)
• M30: 3,344,260 km (0.106 R)
• M31: 3,659,014 km (0.114 R)
• M32: 3,924,551 km (0.103 R)
• M33: 4,369,604 km (0.117 R)
• M34: 4,562,735 km (0.071 R)
• M35: 5,149,757 km (0.111 R)
• M36: 5,223,658 km (0.093 R)
• M37: 5,288,584 km (0.047 R)
• M38: 5,353,958 km (0.105 R)
• M39: 5,419,482 km (0.077 R)
• M40: 5,579,701 km (0.109 R)
• M41: 5,646,123 km (0.117 R)
• M42: 5,856,607 km (0.04 R)
• M43: 6,138,150 km (0.091 R)
• M44: 6,295,527 km (0.066 R)
• M45: 6,573,929 km (0.055 R)
• M46: 6,724,723 km (0.051 R)
• M47: 6,826,001 km (0.032 R)
• M48: 6,917,406 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 65.9

Radius: 9.4

Gravity: 0.75 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 1.38 AU - 2.12 AU

Year: 1544 Days

Day: 5.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 46,578,674 km

• M1: 121,324 km (0.06 R)
• M2: 199,115 km (0.116 R)
• M3: 276,158 km (0.096 R)
• M4: 346,319 km (0.088 R)
• M5: 555,606 km (0.028 R)
• M6: 823,686 km (0.088 R)
• M7: 996,920 km (0.117 R)
• M8: 1,060,799 km (0.119 R)
• M9: 1,146,518 km (0.113 R)
• M10: 1,547,141 km (0.097 R)
• M11: 1,751,492 km (0.12 R)
• M12: 1,860,100 km (0.11 R)
• M13: 2,205,821 km (0.103 R)
• M14: 2,483,474 km (0.106 R)
• M15: 2,592,382 km (0.092 R)
• M16: 2,661,197 km (0.052 R)
• M17: 2,842,958 km (0.096 R)
• M18: 3,300,578 km (0.109 R)
• M19: 3,443,294 km (0.102 R)
• M20: 4,065,921 km (0.058 R)
• M21: 4,146,255 km (0.1 R)
• M22: 4,324,874 km (0.066 R)
• M23: 4,456,371 km (0.104 R)
• M24: 4,614,346 km (0.116 R)
• M25: 4,672,989 km (0.095 R)
• M26: 6,089,381 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 141.1

Radius: 8.9

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 2 AU - 2.6 AU

Year: 2326 Days

Day: 8.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (65)

Outer Limit: 46,578,674 km

• M1: 111,002 km (0.118 R)
• M2: 189,241 km (0.094 R)
• M3: 251,175 km (0.059 R)
• M4: 354,996 km (0.033 R)
• M5: 411,245 km (0.053 R)
• M6: 695,780 km (0.104 R)
• M7: 833,859 km (0.038 R)
• M8: 1,079,797 km (0.081 R)
• M9: 1,256,622 km (0.085 R)
• M10: 1,435,242 km (0.11 R)
• M11: 1,531,733 km (0.078 R)
• M12: 1,589,029 km (0.067 R)
• M13: 1,655,450 km (0.086 R)
• M14: 1,714,392 km (0.061 R)
• M15: 1,825,692 km (0.085 R)
• M16: 1,983,967 km (0.06 R)
• M17: 2,055,774 km (0.078 R)
• M18: 2,174,405 km (0.1 R)
• M19: 2,257,881 km (0.117 R)
• M20: 2,351,978 km (0.097 R)
• M21: 2,456,846 km (0.083 R)
• M22: 2,514,890 km (0.071 R)
• M23: 2,781,324 km (0.068 R)
• M24: 2,841,761 km (0.077 R)
• M25: 2,922,993 km (0.059 R)
• M26: 3,098,471 km (0.117 R)
• M27: 3,161,153 km (0.088 R)
• M28: 3,224,433 km (0.099 R)
• M29: 3,384,203 km (0.11 R)
• M30: 3,524,975 km (0.113 R)
• M31: 3,834,493 km (0.101 R)
• M32: 4,164,506 km (0.108 R)
• M33: 4,362,274 km (0.116 R)
• M34: 4,444,553 km (0.11 R)
• M35: 5,084,682 km (0.116 R)
• M36: 5,196,282 km (0.097 R)
• M37: 5,321,196 km (0.082 R)
• M38: 5,421,876 km (0.053 R)
• M39: 5,676,342 km (0.111 R)
• M40: 5,792,130 km (0.103 R)
• M41: 5,947,862 km (0.101 R)
• M42: 6,052,431 km (0.117 R)
• M43: 6,157,598 km (0.106 R)
• M44: 6,611,328 km (0.037 R)
• M45: 6,692,410 km (0.111 R)
• M46: 6,814,931 km (0.051 R)
• M47: 7,103,505 km (0.097 R)
• M48: 7,340,020 km (0.106 R)
• M49: 7,565,015 km (0.06 R)
• M50: 7,706,834 km (0.053 R)
• M51: 7,964,291 km (0.092 R)
• M52: 8,123,164 km (0.109 R)
• M53: 8,181,059 km (0.036 R)
• M54: 8,561,486 km (0.115 R)
• M55: 8,620,428 km (0.105 R)
• M56: 8,709,289 km (0.104 R)
• M57: 9,037,507 km (0.098 R)
• M58: 9,097,495 km (0.116 R)
• M59: 9,506,795 km (0.032 R)
• M60: 9,567,981 km (0.118 R)
• M61: 9,644,575 km (0.12 R)
• M62: 10,093,069 km (0.077 R)
• M63: 10,171,010 km (0.114 R)
• M64: 10,233,542 km (0.118 R)
• M65: 10,296,223 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 645.5

Radius: 10.4

Gravity: 5.97 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.57 AU - 3.33 AU

Year: 3379 Days

Day: 11.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 41.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (70)

Outer Limit: 46,578,674 km

• M1: 184,005 km (0.1 R)
• M2: 367,712 km (0.105 R)
• M3: 540,198 km (0.063 R)
• M4: 793,018 km (0.082 R)
• M5: 1,083,388 km (0.108 R)
• M6: 1,216,380 km (0.069 R)
• M7: 1,718,132 km (0.077 R)
• M8: 1,918,443 km (0.107 R)
• M9: 1,991,896 km (0.06 R)
• M10: 2,172,011 km (0.081 R)
• M11: 2,264,164 km (0.112 R)
• M12: 2,357,662 km (0.093 R)
• M13: 2,678,699 km (0.084 R)
• M14: 2,794,488 km (0.071 R)
• M15: 2,945,881 km (0.103 R)
• M16: 3,523,927 km (0.071 R)
• M17: 3,705,988 km (0.078 R)
• M18: 4,329,213 km (0.085 R)
• M19: 4,623,322 km (0.086 R)
• M20: 4,762,747 km (0.094 R)
• M21: 4,863,277 km (0.098 R)
• M22: 5,272,427 km (0.115 R)
• M23: 5,502,210 km (0.106 R)
• M24: 5,692,648 km (0.077 R)
• M25: 5,950,106 km (0.102 R)
• M26: 6,700,189 km (0.095 R)
• M27: 6,790,397 km (0.113 R)
• M28: 6,880,904 km (0.075 R)
• M29: 6,994,748 km (0.095 R)
• M30: 7,086,302 km (0.092 R)
• M31: 7,293,794 km (0.098 R)
• M32: 8,071,553 km (0.12 R)
• M33: 8,555,801 km (0.101 R)
• M34: 9,049,325 km (0.085 R)
• M35: 9,299,752 km (0.106 R)
• M36: 9,961,273 km (0.114 R)
• M37: 10,090,227 km (0.115 R)
• M38: 10,297,719 km (0.069 R)
• M39: 11,035,237 km (0.105 R)
• M40: 11,195,456 km (0.072 R)
• M41: 11,410,278 km (0.119 R)
• M42: 12,008,221 km (0.116 R)
• M43: 12,338,683 km (0.083 R)
• M44: 12,644,311 km (0.11 R)
• M45: 13,206,201 km (0.058 R)
• M46: 13,433,440 km (0.116 R)
• M47: 14,180,382 km (0.119 R)
• M48: 14,296,470 km (0.118 R)
• M49: 14,705,471 km (0.056 R)
• M50: 14,881,847 km (0.097 R)
• M51: 14,970,409 km (0.105 R)
• M52: 15,296,233 km (0.096 R)
• M53: 15,654,520 km (0.082 R)
• M54: 16,318,585 km (0.082 R)
• M55: 16,653,983 km (0.102 R)
• M56: 16,991,775 km (0.064 R)
• M57: 17,362,778 km (0.077 R)
• M58: 17,893,102 km (0.081 R)
• M59: 18,144,427 km (0.108 R)
• M60: 18,396,948 km (0.109 R)
• M61: 18,841,702 km (0.109 R)
• M62: 18,969,459 km (0.054 R)
• M63: 19,547,804 km (0.105 R)
• M64: 19,806,758 km (0.074 R)
• M65: 20,754,909 km (0.116 R)
• M66: 21,317,547 km (0.062 R)
• M67: 21,383,968 km (0.026 R)
• M68: 21,684,211 km (0.038 R)
• M69: 21,851,611 km (0.116 R)
• M70: 21,952,291 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 643.3

Radius: 11.6

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 3.09 AU - 3.21 AU

Year: 3728 Days

Day: 10.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 46,578,674 km

• M1: 289,173 km (0.08 R)
• M2: 406,457 km (0.064 R)
• M3: 670,797 km (0.088 R)
• M4: 978,370 km (0.053 R)
• M5: 1,161,627 km (0.077 R)
• M6: 1,290,282 km (0.076 R)
• M7: 1,369,868 km (0.025 R)
• M8: 1,548,488 km (0.059 R)
• M9: 1,944,174 km (0.035 R)
• M10: 2,130,274 km (0.114 R)
• M11: 2,437,099 km (0.066 R)
• M12: 2,706,674 km (0.118 R)
• M13: 2,827,849 km (0.088 R)
• M14: 2,933,016 km (0.068 R)
• M15: 3,075,433 km (0.045 R)
• M16: 3,478,898 km (0.033 R)
• M17: 3,554,146 km (0.093 R)
• M18: 3,687,139 km (0.107 R)
• M19: 3,763,882 km (0.085 R)
• M20: 4,437,821 km (0.095 R)
• M21: 4,560,641 km (0.075 R)
• M22: 4,747,189 km (0.103 R)
• M23: 4,978,468 km (0.047 R)
• M24: 5,365,178 km (0.091 R)
• M25: 5,562,049 km (0.087 R)
• M26: 5,850,922 km (0.096 R)
• M27: 6,076,516 km (0.067 R)
• M28: 6,935,806 km (0.083 R)
• M29: 7,078,822 km (0.054 R)
• M30: 7,271,055 km (0.067 R)
• M31: 7,759,043 km (0.074 R)
• M32: 7,957,260 km (0.103 R)
• M33: 8,409,345 km (0.1 R)
• M34: 8,792,615 km (0.12 R)
• M35: 8,999,359 km (0.092 R)
• M36: 9,549,730 km (0.053 R)
• M37: 9,735,530 km (0.062 R)
• M38: 9,869,121 km (0.068 R)
• M39: 10,246,257 km (0.088 R)
• M40: 10,354,865 km (0.118 R)
• M41: 10,682,934 km (0.116 R)
• M42: 11,293,592 km (0.074 R)
• M43: 11,405,790 km (0.089 R)
• M44: 11,546,712 km (0.105 R)
• M45: 11,716,356 km (0.099 R)
• M46: 12,001,190 km (0.062 R)
• M47: 12,548,569 km (0.105 R)
• M48: 13,340,540 km (0.031 R)
• M49: 13,459,320 km (0.095 R)
• M50: 13,817,458 km (0.12 R)
• M51: 13,907,516 km (0.114 R)
• M52: 14,118,449 km (0.085 R)
• M53: 14,391,166 km (0.114 R)
• M54: 14,911,018 km (0.119 R)
• M55: 15,374,921 km (0.076 R)
• M56: 15,561,769 km (0.112 R)
• M57: 15,843,462 km (0.081 R)
• M58: 16,507,527 km (0.1 R)
• M59: 17,245,044 km (0.087 R)
• M60: 17,569,223 km (0.09 R)
• M61: 17,764,598 km (0.05 R)
• M62: 17,960,720 km (0.081 R)
• M63: 18,454,244 km (0.064 R)
• M64: 18,553,577 km (0.117 R)
• M65: 19,085,846 km (0.094 R)
• M66: 19,253,246 km (0.058 R)
• M67: 19,488,264 km (0.101 R)
• M68: 19,927,633 km (0.071 R)
• M69: 20,506,876 km (0.092 R)
• M70: 20,678,315 km (0.096 R)
• M71: 21,542,692 km (0.055 R)
• M72: 22,524,951 km (0.095 R)
• M73: 22,701,776 km (0.055 R)
• M74: 23,414,161 km (0.101 R)
• M75: 23,557,476 km (0.086 R)
• M76: 23,737,143 km (0.093 R)
• M77: 23,845,003 km (0.072 R)
• M78: 24,242,335 km (0.066 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 628.9

Radius: 6.5

Gravity: 14.89 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 4.8 AU - 7.36 AU

Year: 9997 Days

Day: 24.8 Hours

Environment

Temp: -225 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 46,578,674 km

• M1: 102,475 km (0.03 R)
• M2: 166,203 km (0.061 R)
• M3: 232,625 km (0.062 R)
• M4: 275,709 km (0.079 R)
• M5: 347,067 km (0.12 R)
• M6: 554,559 km (0.096 R)
• M7: 1,463,965 km (0.085 R)
• M8: 1,685,519 km (0.09 R)
• M9: 1,777,223 km (0.084 R)
• M10: 1,917,845 km (0.045 R)
• M11: 2,086,591 km (0.097 R)
• M12: 2,260,274 km (0.081 R)
• M13: 2,621,703 km (0.088 R)
• M14: 2,890,829 km (0.081 R)
• M15: 3,001,083 km (0.081 R)
• M16: 3,112,683 km (0.064 R)
• M17: 3,455,711 km (0.044 R)
• M18: 3,871,144 km (0.084 R)
• M19: 4,208,637 km (0.088 R)
• M20: 4,781,148 km (0.098 R)
• M21: 5,547,837 km (0.107 R)
• M22: 5,754,132 km (0.083 R)
• M23: 6,209,808 km (0.11 R)
• M24: 6,388,128 km (0.112 R)
• M25: 6,459,935 km (0.03 R)
• M26: 6,823,009 km (0.108 R)
• M27: 7,267,465 km (0.078 R)
• M28: 7,568,904 km (0.064 R)
• M29: 8,656,182 km (0.097 R)
• M30: 8,815,503 km (0.067 R)
• M31: 9,217,922 km (0.106 R)
• M32: 10,082,597 km (0.089 R)
• M33: 10,503,416 km (0.117 R)
• M34: 10,886,985 km (0.11 R)
• M35: 11,145,341 km (0.106 R)
• M36: 11,318,575 km (0.047 R)
• M37: 11,492,856 km (0.074 R)
• M38: 12,065,218 km (0.069 R)
• M39: 12,827,569 km (0.096 R)
• M40: 13,009,330 km (0.118 R)
• M41: 13,146,062 km (0.114 R)
• M42: 13,837,354 km (0.086 R)
• M43: 14,729,706 km (0.105 R)
• M44: 15,737,546 km (0.053 R)
• M45: 16,176,317 km (0.04 R)
• M46: 16,569,610 km (0.101 R)
• M47: 16,618,977 km (0.074 R)
• M48: 16,668,494 km (0.115 R)
• M49: 17,516,415 km (0.059 R)
• M50: 17,718,073 km (0.096 R)
• M51: 19,046,950 km (0.097 R)
• M52: 19,306,054 km (0.108 R)
• M53: 20,090,695 km (0.116 R)
• M54: 20,672,780 km (0.099 R)
• M55: 20,832,401 km (0.098 R)
• M56: 20,885,808 km (0.105 R)
• M57: 21,260,251 km (0.114 R)
• M58: 22,342,592 km (0.068 R)
• M59: 22,780,614 km (0.119 R)
• M60: 22,890,419 km (0.066 R)
• M61: 23,664,887 km (0.067 R)
• M62: 23,943,588 km (0.098 R)
• M63: 24,391,634 km (0.117 R)
• M64: 24,673,177 km (0.043 R)
• M65: 25,809,821 km (0.098 R)
• M66: 26,963,520 km (0.08 R)
• M67: 27,839,715 km (0.113 R)
• M68: 28,429,131 km (0.108 R)
• M69: 28,488,222 km (0.114 R)
• M70: 28,665,944 km (0.106 R)
• M71: 30,523,950 km (0.086 R)
• M72: 30,584,537 km (0.083 R)
• M73: 31,070,730 km (0.097 R)
• M74: 31,131,616 km (0.098 R)
• M75: 31,498,131 km (0.115 R)
• M76: 32,420,701 km (0.096 R)
• M77: 32,544,269 km (0.092 R)
• M78: 35,368,078 km (0.117 R)
• M79: 37,618,030 km (0.115 R)
• M80: 37,878,031 km (0.06 R)
• M81: 38,792,972 km (0.073 R)
• M82: 38,989,992 km (0.107 R)
• M83: 39,187,312 km (0.098 R)
• M84: 39,980,031 km (0.104 R)
• M85: 41,379,968 km (0.101 R)
• M86: 43,611,968 km (0.097 R)
• M87: 43,885,283 km (0.079 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: 470 - 19,032 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit