🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 889

Radius: 13.6

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.84 AU - 0.96 AU

Year: 589 Days

Day: 8 Hours

Environment

Temp: -169 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 67,485,746 km

• M1: 196,123 km (0.077 R)
• M2: 283,039 km (0.113 R)
• M3: 410,497 km (0.114 R)
• M4: 503,397 km (0.099 R)
• M5: 765,792 km (0.095 R)
• M6: 862,282 km (0.088 R)
• M7: 979,716 km (0.107 R)
• M8: 1,132,007 km (0.061 R)
• M9: 1,739,374 km (0.078 R)
• M10: 1,828,984 km (0.098 R)
• M11: 1,948,662 km (0.116 R)
• M12: 2,071,033 km (0.092 R)
• M13: 2,166,327 km (0.105 R)
• M14: 2,369,331 km (0.083 R)
• M15: 2,454,003 km (0.104 R)
• M16: 2,705,926 km (0.104 R)
• M17: 2,810,794 km (0.112 R)
• M18: 2,908,781 km (0.048 R)
• M19: 3,041,325 km (0.072 R)
• M20: 3,150,531 km (0.098 R)
• M21: 3,312,695 km (0.062 R)
• M22: 3,433,870 km (0.089 R)
• M23: 3,770,465 km (0.064 R)
• M24: 3,888,198 km (0.072 R)
• M25: 4,173,781 km (0.105 R)
• M26: 4,371,250 km (0.091 R)
• M27: 4,785,486 km (0.082 R)
• M28: 4,903,220 km (0.094 R)
• M29: 5,435,489 km (0.096 R)
• M30: 5,610,219 km (0.098 R)
• M31: 5,786,745 km (0.061 R)
• M32: 6,007,402 km (0.082 R)
• M33: 6,177,494 km (0.104 R)
• M34: 6,306,149 km (0.077 R)
• M35: 6,457,242 km (0.108 R)
• M36: 6,697,347 km (0.105 R)
• M37: 6,796,381 km (0.117 R)
• M38: 6,884,793 km (0.114 R)
• M39: 6,984,725 km (0.093 R)
• M40: 7,085,254 km (0.097 R)
• M41: 7,276,440 km (0.102 R)
• M42: 7,446,384 km (0.092 R)
• M43: 7,848,503 km (0.108 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129.6

Radius: 9.3

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.8 AU - 2.24 AU

Year: 1982 Days

Day: 13.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 41.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 67,485,746 km

• M1: 118,033 km (0.103 R)
• M2: 192,383 km (0.085 R)
• M3: 275,858 km (0.111 R)
• M4: 352,752 km (0.086 R)
• M5: 425,456 km (0.084 R)
• M6: 494,870 km (0.106 R)
• M7: 599,588 km (0.116 R)
• M8: 690,245 km (0.083 R)
• M9: 803,490 km (0.103 R)
• M10: 985,700 km (0.095 R)
• M11: 1,062,444 km (0.114 R)
• M12: 1,181,524 km (0.099 R)
• M13: 1,298,210 km (0.06 R)
• M14: 1,368,671 km (0.078 R)
• M15: 1,717,832 km (0.109 R)
• M16: 1,898,846 km (0.11 R)
• M17: 1,971,401 km (0.07 R)
• M18: 2,094,370 km (0.12 R)
• M19: 2,211,505 km (0.115 R)
• M20: 2,356,914 km (0.072 R)
• M21: 2,505,316 km (0.107 R)
• M22: 2,603,153 km (0.095 R)
• M23: 2,775,041 km (0.095 R)
• M24: 2,876,318 km (0.11 R)
• M25: 3,323,018 km (0.116 R)
• M26: 3,381,660 km (0.094 R)
• M27: 3,440,601 km (0.088 R)
• M28: 3,609,647 km (0.113 R)
• M29: 3,720,349 km (0.063 R)
• M30: 3,801,731 km (0.081 R)
• M31: 3,986,783 km (0.077 R)
• M32: 4,164,506 km (0.094 R)
• M33: 4,270,122 km (0.105 R)
• M34: 4,387,406 km (0.047 R)
• M35: 4,473,425 km (0.103 R)
• M36: 4,560,042 km (0.044 R)
• M37: 4,745,843 km (0.082 R)
• M38: 4,912,046 km (0.096 R)
• M39: 5,012,576 km (0.117 R)
• M40: 5,193,140 km (0.11 R)
• M41: 5,295,615 km (0.071 R)
• M42: 5,364,280 km (0.027 R)
• M43: 5,525,846 km (0.084 R)
• M44: 5,677,239 km (0.102 R)
• M45: 5,747,550 km (0.119 R)
• M46: 5,889,070 km (0.118 R)
• M47: 6,067,690 km (0.098 R)
• M48: 6,139,646 km (0.12 R)
• M49: 6,332,927 km (0.101 R)
• M50: 6,418,197 km (0.104 R)
• M51: 6,516,034 km (0.119 R)
• M52: 6,614,320 km (0.083 R)
• M53: 6,887,336 km (0.074 R)
• M54: 7,088,246 km (0.09 R)
• M55: 7,303,817 km (0.047 R)
• M56: 7,560,228 km (0.106 R)
• M57: 7,741,391 km (0.112 R)
• M58: 7,858,675 km (0.096 R)
• M59: 8,161,162 km (0.089 R)
• M60: 8,240,599 km (0.107 R)
• M61: 8,307,170 km (0.115 R)
• M62: 8,480,853 km (0.066 R)
• M63: 8,831,809 km (0.091 R)
• M64: 8,899,877 km (0.056 R)
• M65: 8,995,320 km (0.112 R)
• M66: 9,077,599 km (0.11 R)
• M67: 9,201,316 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 542.1

Radius: 15

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 3.14 AU - 3.44 AU

Year: 4119 Days

Day: 10.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 67,485,746 km

• M1: 192,682 km (0.066 R)
• M2: 352,901 km (0.112 R)
• M3: 748,139 km (0.107 R)
• M4: 844,181 km (0.094 R)
• M5: 1,136,495 km (0.081 R)
• M6: 1,288,935 km (0.047 R)
• M7: 1,476,232 km (0.113 R)
• M8: 2,077,914 km (0.111 R)
• M9: 2,188,018 km (0.084 R)
• M10: 2,447,421 km (0.119 R)
• M11: 2,564,257 km (0.115 R)
• M12: 3,104,455 km (0.072 R)
• M13: 3,304,767 km (0.084 R)
• M14: 3,641,960 km (0.116 R)
• M15: 3,834,343 km (0.043 R)
• M16: 4,049,764 km (0.059 R)
• M17: 4,534,012 km (0.11 R)
• M18: 4,867,316 km (0.114 R)
• M19: 4,973,082 km (0.05 R)
• M20: 5,101,138 km (0.118 R)
• M21: 5,251,932 km (0.084 R)
• M22: 5,624,431 km (0.114 R)
• M23: 5,915,100 km (0.115 R)
• M24: 6,050,935 km (0.038 R)
• M25: 6,256,632 km (0.085 R)
• M26: 6,816,726 km (0.092 R)
• M27: 7,054,886 km (0.099 R)
• M28: 7,175,163 km (0.076 R)
• M29: 7,320,123 km (0.097 R)
• M30: 7,613,335 km (0.114 R)
• M31: 7,711,920 km (0.086 R)
• M32: 7,810,954 km (0.051 R)
• M33: 8,824,479 km (0.106 R)
• M34: 9,215,229 km (0.119 R)
• M35: 9,346,875 km (0.104 R)
• M36: 9,718,476 km (0.026 R)
• M37: 9,852,516 km (0.101 R)
• M38: 9,960,077 km (0.119 R)
• M39: 10,095,164 km (0.066 R)
• M40: 10,312,529 km (0.055 R)
• M41: 10,973,901 km (0.045 R)
• M42: 12,020,638 km (0.075 R)
• M43: 12,135,678 km (0.049 R)
• M44: 12,425,001 km (0.111 R)
• M45: 12,658,224 km (0.062 R)
• M46: 13,158,330 km (0.086 R)
• M47: 13,396,041 km (0.086 R)
• M48: 13,605,178 km (0.036 R)
• M49: 14,026,596 km (0.12 R)
• M50: 14,178,288 km (0.114 R)
• M51: 15,316,877 km (0.077 R)
• M52: 15,786,914 km (0.061 R)
• M53: 16,166,443 km (0.068 R)
• M54: 16,325,466 km (0.073 R)
• M55: 16,421,059 km (0.055 R)
• M56: 16,645,007 km (0.085 R)
• M57: 16,870,002 km (0.114 R)
• M58: 16,966,643 km (0.071 R)
• M59: 17,845,380 km (0.074 R)
• M60: 17,976,877 km (0.099 R)
• M61: 18,207,706 km (0.076 R)
• M62: 18,572,426 km (0.097 R)
• M63: 18,939,539 km (0.071 R)
• M64: 19,174,557 km (0.081 R)
• M65: 20,089,648 km (0.111 R)
• M66: 20,776,751 km (0.118 R)
• M67: 21,366,765 km (0.114 R)
• M68: 21,541,345 km (0.093 R)
• M69: 21,646,363 km (0.118 R)
• M70: 21,786,686 km (0.039 R)
• M71: 21,892,003 km (0.093 R)
• M72: 21,997,619 km (0.115 R)
• M73: 23,098,360 km (0.066 R)
• M74: 23,385,438 km (0.102 R)
• M75: 24,144,348 km (0.117 R)
• M76: 24,289,907 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 204.8

Radius: 9.9

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 3.38 AU - 3.48 AU

Year: 4385 Days

Day: 9.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 67,485,746 km

• M1: 133,890 km (0.111 R)
• M2: 200,162 km (0.111 R)
• M3: 292,763 km (0.058 R)
• M4: 602,879 km (0.079 R)
• M5: 721,660 km (0.043 R)
• M6: 811,868 km (0.056 R)
• M7: 964,607 km (0.097 R)
• M8: 1,075,459 km (0.071 R)
• M9: 1,365,978 km (0.065 R)
• M10: 1,479,972 km (0.11 R)
• M11: 1,891,515 km (0.096 R)
• M12: 2,163,335 km (0.082 R)
• M13: 2,270,148 km (0.093 R)
• M14: 2,337,916 km (0.051 R)
• M15: 2,433,957 km (0.05 R)
• M16: 3,172,821 km (0.07 R)
• M17: 3,402,903 km (0.036 R)
• M18: 3,527,817 km (0.066 R)
• M19: 3,606,655 km (0.097 R)
• M20: 3,846,909 km (0.073 R)
• M21: 3,944,447 km (0.103 R)
• M22: 4,342,976 km (0.1 R)
• M23: 4,912,046 km (0.07 R)
• M24: 5,142,726 km (0.111 R)
• M25: 5,268,388 km (0.085 R)
• M26: 5,541,255 km (0.1 R)
• M27: 5,725,859 km (0.089 R)
• M28: 6,425,977 km (0.115 R)
• M29: 6,542,214 km (0.073 R)
• M30: 6,698,095 km (0.048 R)
• M31: 6,934,310 km (0.114 R)
• M32: 7,968,630 km (0.09 R)
• M33: 8,072,600 km (0.085 R)
• M34: 8,642,119 km (0.11 R)
• M35: 8,942,512 km (0.082 R)
• M36: 9,246,345 km (0.076 R)
• M37: 9,443,515 km (0.054 R)
• M38: 9,531,628 km (0.114 R)
• M39: 9,797,464 km (0.073 R)
• M40: 9,908,914 km (0.106 R)
• M41: 10,268,547 km (0.084 R)
• M42: 10,472,749 km (0.056 R)
• M43: 10,541,115 km (0.036 R)
• M44: 10,747,111 km (0.117 R)
• M45: 10,954,454 km (0.069 R)
• M46: 11,139,805 km (0.119 R)
• M47: 11,631,534 km (0.101 R)
• M48: 11,891,834 km (0.095 R)
• M49: 12,082,422 km (0.117 R)
• M50: 12,178,164 km (0.087 R)
• M51: 12,394,333 km (0.093 R)
• M52: 12,708,938 km (0.031 R)
• M53: 12,903,714 km (0.044 R)
• M54: 12,977,166 km (0.055 R)
• M55: 13,643,326 km (0.092 R)
• M56: 13,792,924 km (0.109 R)
• M57: 13,867,872 km (0.075 R)
• M58: 14,245,008 km (0.095 R)
• M59: 14,548,991 km (0.073 R)
• M60: 14,804,056 km (0.097 R)
• M61: 15,473,955 km (0.04 R)
• M62: 16,022,381 km (0.084 R)
• M63: 16,417,918 km (0.094 R)
• M64: 16,683,454 km (0.072 R)
• M65: 16,763,489 km (0.084 R)
• M66: 16,977,264 km (0.068 R)
• M67: 17,542,744 km (0.083 R)
• M68: 17,732,584 km (0.088 R)
• M69: 18,169,260 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 822.8

Radius: 8

Gravity: 12.86 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 4.43 AU - 5.19 AU

Year: 7282 Days

Day: 14.1 Hours

Environment

Temp: -219 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 67,485,746 km

• M1: 100,829 km (0.118 R)
• M2: 252,521 km (0.081 R)
• M3: 313,258 km (0.086 R)
• M4: 466,297 km (0.116 R)
• M5: 601,533 km (0.113 R)
• M6: 944,561 km (0.105 R)
• M7: 1,047,933 km (0.08 R)
• M8: 1,101,040 km (0.047 R)
• M9: 1,210,247 km (0.103 R)
• M10: 1,361,640 km (0.119 R)
• M11: 1,479,373 km (0.101 R)
• M12: 2,254,590 km (0.071 R)
• M13: 2,418,250 km (0.038 R)
• M14: 2,561,564 km (0.119 R)
• M15: 3,137,217 km (0.09 R)
• M16: 3,215,157 km (0.106 R)
• M17: 3,862,318 km (0.093 R)
• M18: 4,172,285 km (0.084 R)
• M19: 4,906,361 km (0.12 R)
• M20: 5,490,840 km (0.101 R)
• M21: 5,585,237 km (0.066 R)
• M22: 6,000,071 km (0.109 R)
• M23: 6,129,773 km (0.051 R)
• M24: 6,557,623 km (0.053 R)
• M25: 6,624,343 km (0.108 R)
• M26: 6,961,238 km (0.08 R)
• M27: 7,511,907 km (0.108 R)
• M28: 7,686,787 km (0.071 R)
• M29: 7,863,163 km (0.104 R)
• M30: 8,400,070 km (0.07 R)
• M31: 9,246,345 km (0.086 R)
• M32: 9,396,242 km (0.116 R)
• M33: 10,274,083 km (0.047 R)
• M34: 10,546,351 km (0.106 R)
• M35: 10,979,137 km (0.115 R)
• M36: 11,862,214 km (0.109 R)
• M37: 12,851,205 km (0.11 R)
• M38: 13,313,313 km (0.071 R)
• M39: 13,482,807 km (0.099 R)
• M40: 13,952,395 km (0.09 R)
• M41: 14,124,433 km (0.119 R)
• M42: 14,340,601 km (0.106 R)
• M43: 14,863,596 km (0.109 R)
• M44: 15,704,635 km (0.091 R)
• M45: 17,109,808 km (0.052 R)
• M46: 17,525,241 km (0.032 R)
• M47: 18,554,624 km (0.03 R)
• M48: 19,076,720 km (0.113 R)
• M49: 19,172,164 km (0.116 R)
• M50: 19,315,628 km (0.096 R)
• M51: 20,086,805 km (0.067 R)
• M52: 20,671,733 km (0.109 R)
• M53: 20,966,291 km (0.107 R)
• M54: 21,212,978 km (0.071 R)
• M55: 22,510,440 km (0.112 R)
• M56: 22,661,833 km (0.115 R)
• M57: 22,762,962 km (0.048 R)
• M58: 23,782,172 km (0.085 R)
• M59: 24,868,402 km (0.118 R)
• M60: 25,024,881 km (0.11 R)
• M61: 25,812,215 km (0.112 R)
• M62: 26,394,749 km (0.03 R)
• M63: 26,767,697 km (0.053 R)
• M64: 27,303,556 km (0.087 R)
• M65: 27,411,117 km (0.045 R)
• M66: 27,843,006 km (0.109 R)
• M67: 27,897,161 km (0.101 R)
• M68: 28,005,469 km (0.069 R)
• M69: 28,113,928 km (0.116 R)
• M70: 28,604,010 km (0.108 R)
• M71: 29,537,352 km (0.039 R)
• M72: 30,257,815 km (0.081 R)
• M73: 31,716,095 km (0.071 R)
• M74: 32,738,896 km (0.067 R)
• M75: 33,426,896 km (0.101 R)
• M76: 33,657,277 km (0.061 R)
• M77: 33,714,872 km (0.092 R)
• M78: 33,946,001 km (0.044 R)
• M79: 34,642,229 km (0.038 R)
• M80: 36,699,798 km (0.11 R)
• M81: 37,175,520 km (0.096 R)
• M82: 37,414,278 km (0.053 R)
• M83: 38,313,959 km (0.104 R)
• M84: 38,554,962 km (0.072 R)
• M85: 38,978,174 km (0.094 R)
• M86: 39,159,935 km (0.066 R)
• M87: 40,134,416 km (0.08 R)
• M88: 40,195,601 km (0.099 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 513.6

Radius: 6.5

Gravity: 12.16 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 8.31 AU - 10.11 AU

Year: 19293 Days

Day: 22.5 Hours

Environment

Temp: -241 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 67,485,746 km

• M1: 286,031 km (0.112 R)
• M2: 448,794 km (0.111 R)
• M3: 620,083 km (0.086 R)
• M4: 661,073 km (0.098 R)
• M5: 767,587 km (0.049 R)
• M6: 1,071,420 km (0.109 R)
• M7: 1,410,259 km (0.118 R)
• M8: 1,840,503 km (0.115 R)
• M9: 2,085,694 km (0.091 R)
• M10: 2,244,417 km (0.029 R)
• M11: 2,506,512 km (0.066 R)
• M12: 3,276,792 km (0.111 R)
• M13: 3,611,741 km (0.113 R)
• M14: 5,575,363 km (0.084 R)
• M15: 6,521,270 km (0.086 R)
• M16: 6,941,640 km (0.12 R)
• M17: 7,274,795 km (0.12 R)
• M18: 8,760,451 km (0.119 R)
• M19: 9,642,780 km (0.095 R)
• M20: 10,716,593 km (0.098 R)
• M21: 10,825,949 km (0.044 R)
• M22: 12,111,294 km (0.04 R)
• M23: 13,326,328 km (0.087 R)
• M24: 13,503,003 km (0.037 R)
• M25: 15,128,234 km (0.097 R)
• M26: 16,120,218 km (0.101 R)
• M27: 16,687,493 km (0.112 R)
• M28: 16,750,773 km (0.067 R)
• M29: 16,877,931 km (0.119 R)
• M30: 17,261,201 km (0.096 R)
• M31: 17,389,556 km (0.103 R)
• M32: 17,906,117 km (0.118 R)
• M33: 18,624,785 km (0.077 R)
• M34: 19,087,043 km (0.108 R)
• M35: 19,686,781 km (0.104 R)
• M36: 20,973,322 km (0.081 R)
• M37: 21,523,094 km (0.098 R)
• M38: 22,847,784 km (0.116 R)
• M39: 23,697,948 km (0.049 R)
• M40: 23,769,157 km (0.103 R)
• M41: 23,912,023 km (0.065 R)
• M42: 24,992,419 km (0.097 R)
• M43: 26,828,284 km (0.088 R)
• M44: 26,976,984 km (0.097 R)
• M45: 28,025,815 km (0.111 R)
• M46: 29,393,738 km (0.051 R)
• M47: 29,547,075 km (0.067 R)
• M48: 32,431,472 km (0.102 R)
• M49: 33,465,941 km (0.1 R)
• M50: 34,349,765 km (0.116 R)
• M51: 34,835,061 km (0.111 R)
• M52: 35,322,750 km (0.098 R)
• M53: 35,404,131 km (0.085 R)
• M54: 35,485,662 km (0.059 R)
• M55: 36,140,302 km (0.096 R)
• M56: 36,964,287 km (0.078 R)
• M57: 37,794,256 km (0.09 R)
• M58: 38,379,035 km (0.084 R)
• M59: 38,546,584 km (0.119 R)
• M60: 38,798,507 km (0.115 R)
• M61: 38,882,581 km (0.034 R)
• M62: 39,135,102 km (0.109 R)
• M63: 39,219,475 km (0.102 R)
• M64: 40,065,900 km (0.105 R)
• M65: 40,321,114 km (0.116 R)
• M66: 40,406,235 km (0.029 R)
• M67: 41,604,813 km (0.1 R)
• M68: 41,949,487 km (0.102 R)
• M69: 42,468,143 km (0.107 R)
• M70: 43,511,887 km (0.057 R)
• M71: 43,599,252 km (0.093 R)
• M72: 44,124,490 km (0.108 R)
• M73: 45,535,797 km (0.096 R)
• M74: 46,336,145 km (0.094 R)
• M75: 50,131,742 km (0.114 R)
• M76: 51,234,428 km (0.096 R)
• M77: 52,066,791 km (0.119 R)
• M78: 52,159,542 km (0.069 R)
• M79: 54,025,925 km (0.106 R)
• M80: 54,778,701 km (0.106 R)
• M81: 55,061,890 km (0.086 R)
• M82: 55,156,436 km (0.073 R)
• M83: 56,771,046 km (0.057 R)
• M84: 57,153,268 km (0.076 R)
• M85: 57,536,239 km (0.039 R)
• M86: 61,119,556 km (0.097 R)
• M87: 61,511,204 km (0.111 R)
• M88: 62,494,062 km (0.074 R)
• M89: 62,691,232 km (0.115 R)
• M90: 62,789,966 km (0.113 R)
• M91: 63,978,073 km (0.092 R)
• M92: 64,176,888 km (0.034 R)
• M93: 65,473,752 km (0.116 R)
• M94: 66,075,136 km (0.114 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: 472 - 17,647 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit