🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 3.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 220.2

Radius: 8.8

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.86 AU - 4.64 AU

Year: 4925 Days

Day: 11.9 Hours

Environment

Temp: -220 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 81,666,102 km

• M1: 146,905 km (0.112 R)
• M2: 215,271 km (0.114 R)
• M3: 446,998 km (0.107 R)
• M4: 715,377 km (0.041 R)
• M5: 822,339 km (0.091 R)
• M6: 903,870 km (0.112 R)
• M7: 977,472 km (0.093 R)
• M8: 1,042,248 km (0.084 R)
• M9: 1,176,438 km (0.048 R)
• M10: 1,328,429 km (0.095 R)
• M11: 1,474,586 km (0.08 R)
• M12: 1,537,118 km (0.076 R)
• M13: 1,678,039 km (0.079 R)
• M14: 1,823,149 km (0.072 R)
• M15: 1,986,211 km (0.116 R)
• M16: 2,041,712 km (0.072 R)
• M17: 2,182,783 km (0.119 R)
• M18: 2,326,995 km (0.104 R)
• M19: 2,549,447 km (0.112 R)
• M20: 2,763,222 km (0.109 R)
• M21: 2,951,267 km (0.1 R)
• M22: 3,111,187 km (0.082 R)
• M23: 3,192,269 km (0.087 R)
• M24: 3,456,459 km (0.108 R)
• M25: 3,574,192 km (0.081 R)
• M26: 3,779,441 km (0.09 R)
• M27: 4,023,584 km (0.111 R)
• M28: 4,237,060 km (0.089 R)
• M29: 4,309,017 km (0.059 R)
• M30: 4,749,583 km (0.063 R)
• M31: 4,937,478 km (0.095 R)
• M32: 5,127,766 km (0.114 R)
• M33: 5,223,958 km (0.043 R)
• M34: 5,301,150 km (0.1 R)
• M35: 5,574,765 km (0.113 R)
• M36: 5,733,189 km (0.084 R)
• M37: 5,832,971 km (0.046 R)
• M38: 6,013,984 km (0.077 R)
• M39: 6,258,277 km (0.052 R)
• M40: 6,568,244 km (0.083 R)
• M41: 6,672,663 km (0.08 R)
• M42: 6,756,737 km (0.093 R)
• M43: 6,904,540 km (0.115 R)
• M44: 7,138,960 km (0.107 R)
• M45: 7,332,689 km (0.08 R)
• M46: 7,681,402 km (0.053 R)
• M47: 7,924,349 km (0.062 R)
• M48: 8,645,411 km (0.096 R)
• M49: 8,852,005 km (0.099 R)
• M50: 9,106,770 km (0.079 R)
• M51: 9,718,476 km (0.074 R)
• M52: 9,861,641 km (0.101 R)
• M53: 9,933,448 km (0.118 R)
• M54: 10,489,653 km (0.1 R)
• M55: 11,230,312 km (0.114 R)
• M56: 11,657,564 km (0.113 R)
• M57: 12,218,256 km (0.059 R)
• M58: 12,295,449 km (0.11 R)
• M59: 12,553,805 km (0.116 R)
• M60: 12,892,344 km (0.076 R)
• M61: 12,997,063 km (0.107 R)
• M62: 13,525,293 km (0.089 R)
• M63: 13,979,771 km (0.097 R)
• M64: 14,195,342 km (0.101 R)
• M65: 14,876,162 km (0.107 R)
• M66: 17,039,197 km (0.046 R)
• M67: 17,096,793 km (0.088 R)
• M68: 17,501,006 km (0.088 R)
• M69: 17,879,190 km (0.1 R)
• M70: 18,201,274 km (0.102 R)
• M71: 18,289,387 km (0.111 R)
• M72: 18,732,496 km (0.1 R)
• M73: 18,791,737 km (0.112 R)
• M74: 19,568,897 km (0.115 R)
• M75: 20,113,135 km (0.067 R)

Planet 2 - Ice Giant

Semi-Major Axis: 6.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 491.2

Radius: 7.1

Gravity: 9.74 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 6.01 AU - 6.19 AU

Year: 10218 Days

Day: 17.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 81,666,102 km

• M1: 89,609 km (0.1 R)
• M2: 202,107 km (0.105 R)
• M3: 314,006 km (0.075 R)
• M4: 545,135 km (0.088 R)
• M5: 648,656 km (0.053 R)
• M6: 758,910 km (0.11 R)
• M7: 962,662 km (0.106 R)
• M8: 1,089,671 km (0.065 R)
• M9: 1,420,881 km (0.103 R)
• M10: 1,503,309 km (0.118 R)
• M11: 1,962,126 km (0.114 R)
• M12: 2,437,249 km (0.042 R)
• M13: 2,586,547 km (0.099 R)
• M14: 2,713,406 km (0.053 R)
• M15: 2,894,420 km (0.102 R)
• M16: 3,915,275 km (0.105 R)
• M17: 4,298,396 km (0.041 R)
• M18: 4,509,628 km (0.1 R)
• M19: 4,570,514 km (0.078 R)
• M20: 4,662,517 km (0.078 R)
• M21: 4,724,301 km (0.101 R)
• M22: 4,910,849 km (0.092 R)
• M23: 6,386,632 km (0.093 R)
• M24: 7,190,122 km (0.115 R)
• M25: 7,404,945 km (0.11 R)
• M26: 7,841,023 km (0.067 R)
• M27: 7,988,227 km (0.113 R)
• M28: 8,173,579 km (0.089 R)
• M29: 8,510,623 km (0.109 R)
• M30: 9,044,089 km (0.086 R)
• M31: 9,121,132 km (0.064 R)
• M32: 9,275,966 km (0.089 R)
• M33: 9,785,346 km (0.053 R)
• M34: 10,749,205 km (0.067 R)
• M35: 10,994,845 km (0.066 R)
• M36: 11,118,413 km (0.109 R)
• M37: 11,242,430 km (0.092 R)
• M38: 11,785,171 km (0.065 R)
• M39: 11,996,104 km (0.071 R)
• M40: 12,251,018 km (0.09 R)
• M41: 12,507,728 km (0.069 R)
• M42: 12,679,766 km (0.052 R)
• M43: 12,809,318 km (0.088 R)
• M44: 13,200,666 km (0.102 R)
• M45: 13,551,922 km (0.06 R)
• M46: 13,728,746 km (0.102 R)
• M47: 14,398,346 km (0.119 R)
• M48: 14,578,761 km (0.112 R)
• M49: 14,805,252 km (0.097 R)
• M50: 15,032,940 km (0.042 R)
• M51: 15,353,678 km (0.102 R)
• M52: 15,815,786 km (0.112 R)
• M53: 17,565,034 km (0.056 R)
• M54: 18,978,285 km (0.093 R)
• M55: 19,126,686 km (0.092 R)
• M56: 19,275,237 km (0.059 R)
• M57: 20,478,453 km (0.042 R)
• M58: 20,529,166 km (0.103 R)
• M59: 20,986,936 km (0.088 R)
• M60: 21,860,886 km (0.075 R)
• M61: 22,537,069 km (0.114 R)
• M62: 22,746,655 km (0.099 R)
• M63: 22,904,182 km (0.074 R)
• M64: 24,338,227 km (0.085 R)
• M65: 26,075,058 km (0.113 R)
• M66: 26,626,027 km (0.064 R)
• M67: 28,245,424 km (0.084 R)
• M68: 28,358,221 km (0.093 R)
• M69: 28,640,961 km (0.047 R)
• M70: 29,266,430 km (0.067 R)
• M71: 29,323,576 km (0.059 R)
• M72: 29,609,458 km (0.076 R)
• M73: 29,724,199 km (0.081 R)
• M74: 30,011,427 km (0.058 R)
• M75: 30,241,808 km (0.087 R)
• M76: 30,646,620 km (0.078 R)
• M77: 30,995,033 km (0.036 R)
• M78: 31,053,227 km (0.105 R)
• M79: 32,047,903 km (0.111 R)
• M80: 32,993,661 km (0.095 R)
• M81: 34,670,653 km (0.076 R)
• M82: 35,458,734 km (0.071 R)
• M83: 35,702,280 km (0.092 R)
• M84: 36,129,980 km (0.091 R)
• M85: 36,252,501 km (0.086 R)
• M86: 37,175,819 km (0.1 R)
• M87: 37,795,752 km (0.073 R)
• M88: 38,169,298 km (0.099 R)
• M89: 38,481,509 km (0.114 R)
• M90: 39,802,009 km (0.086 R)
• M91: 41,073,591 km (0.032 R)
• M92: 41,457,609 km (0.105 R)
• M93: 41,521,637 km (0.066 R)
• M94: 41,585,814 km (0.096 R)
• M95: 42,035,805 km (0.1 R)
• M96: 42,875,797 km (0.063 R)

Planet 3 - Ice Giant

Semi-Major Axis: 7.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 637.8

Radius: 3.4

Gravity: 55.17 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 5.88 AU - 8.96 AU

Year: 13709 Days

Day: 19 Hours

Environment

Temp: -241 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 81,666,102 km

• M1: 256,860 km (0.111 R)
• M2: 611,706 km (0.055 R)
• M3: 786,735 km (0.058 R)
• M4: 890,556 km (0.09 R)
• M5: 1,043,296 km (0.089 R)
• M6: 1,299,557 km (0.06 R)
• M7: 1,549,086 km (0.108 R)
• M8: 1,759,121 km (0.096 R)
• M9: 1,950,307 km (0.083 R)
• M10: 2,293,186 km (0.104 R)
• M11: 2,411,667 km (0.107 R)
• M12: 2,685,431 km (0.097 R)
• M13: 4,016,703 km (0.09 R)
• M14: 4,340,283 km (0.112 R)
• M15: 5,557,112 km (0.08 R)
• M16: 5,676,192 km (0.077 R)
• M17: 7,518,340 km (0.094 R)
• M18: 8,916,631 km (0.081 R)
• M19: 9,764,403 km (0.033 R)
• M20: 9,812,274 km (0.119 R)
• M21: 10,004,507 km (0.069 R)
• M22: 10,149,468 km (0.092 R)
• M23: 10,934,258 km (0.109 R)
• M24: 11,083,557 km (0.113 R)
• M25: 11,485,077 km (0.111 R)
• M26: 11,891,236 km (0.068 R)
• M27: 12,147,497 km (0.101 R)
• M28: 12,769,973 km (0.104 R)
• M29: 13,190,792 km (0.08 R)
• M30: 14,480,027 km (0.079 R)
• M31: 15,417,108 km (0.12 R)
• M32: 15,808,755 km (0.096 R)
• M33: 16,146,996 km (0.105 R)
• M34: 16,317,089 km (0.092 R)
• M35: 17,407,507 km (0.072 R)
• M36: 18,521,413 km (0.056 R)
• M37: 19,477,044 km (0.075 R)
• M38: 19,537,332 km (0.083 R)
• M39: 20,265,276 km (0.106 R)
• M40: 20,387,497 km (0.079 R)
• M41: 21,685,259 km (0.066 R)
• M42: 21,872,854 km (0.113 R)
• M43: 22,186,561 km (0.117 R)
• M44: 22,755,183 km (0.113 R)
• M45: 22,818,612 km (0.105 R)
• M46: 23,328,591 km (0.091 R)
• M47: 23,392,619 km (0.115 R)
• M48: 24,035,890 km (0.065 R)
• M49: 24,684,845 km (0.031 R)
• M50: 25,471,281 km (0.118 R)
• M51: 27,947,276 km (0.071 R)
• M52: 28,561,076 km (0.089 R)
• M53: 28,629,592 km (0.108 R)
• M54: 29,110,399 km (0.084 R)
• M55: 29,248,328 km (0.051 R)
• M56: 29,455,522 km (0.049 R)
• M57: 29,593,900 km (0.078 R)
• M58: 30,149,805 km (0.075 R)
• M59: 30,219,518 km (0.107 R)
• M60: 30,638,841 km (0.073 R)
• M61: 31,060,258 km (0.106 R)
• M62: 31,695,899 km (0.089 R)
• M63: 32,550,103 km (0.086 R)
• M64: 33,411,787 km (0.067 R)
• M65: 33,918,026 km (0.047 R)
• M66: 35,672,510 km (0.081 R)
• M67: 37,156,970 km (0.082 R)
• M68: 38,057,250 km (0.113 R)
• M69: 38,358,988 km (0.093 R)
• M70: 38,510,232 km (0.104 R)
• M71: 40,955,409 km (0.071 R)
• M72: 41,264,478 km (0.103 R)
• M73: 44,477,841 km (0.077 R)
• M74: 45,994,015 km (0.108 R)
• M75: 46,154,533 km (0.1 R)
• M76: 46,395,685 km (0.112 R)
• M77: 46,637,435 km (0.077 R)
• M78: 46,798,702 km (0.104 R)
• M79: 47,851,871 km (0.08 R)
• M80: 48,014,484 km (0.093 R)
• M81: 48,830,839 km (0.075 R)
• M82: 49,240,738 km (0.116 R)
• M83: 49,898,819 km (0.03 R)
• M84: 50,642,769 km (0.111 R)
• M85: 52,980,535 km (0.067 R)
• M86: 54,162,507 km (0.047 R)
• M87: 54,756,710 km (0.096 R)
• M88: 55,267,886 km (0.088 R)
• M89: 55,694,988 km (0.079 R)
• M90: 56,209,006 km (0.045 R)
• M91: 56,810,539 km (0.065 R)
• M92: 57,155,362 km (0.067 R)

Planet 4 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 206.1

Radius: 7.2

Gravity: 3.98 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 6.44 AU - 9.2 AU

Year: 14832 Days

Day: 20.2 Hours

Environment

Temp: -232 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 81,666,102 km

• M1: 435,629 km (0.075 R)
• M2: 627,264 km (0.117 R)
• M3: 812,466 km (0.116 R)
• M4: 980,165 km (0.104 R)
• M5: 1,104,331 km (0.12 R)
• M6: 1,310,029 km (0.088 R)
• M7: 1,736,382 km (0.108 R)
• M8: 1,822,252 km (0.077 R)
• M9: 2,319,964 km (0.102 R)
• M10: 2,707,422 km (0.1 R)
• M11: 2,985,525 km (0.078 R)
• M12: 3,114,927 km (0.091 R)
• M13: 3,219,945 km (0.101 R)
• M14: 3,433,271 km (0.084 R)
• M15: 3,651,385 km (0.086 R)
• M16: 4,129,649 km (0.07 R)
• M17: 4,187,244 km (0.044 R)
• M18: 4,538,351 km (0.06 R)
• M19: 4,959,917 km (0.073 R)
• M20: 5,082,737 km (0.116 R)
• M21: 5,144,521 km (0.094 R)
• M22: 5,206,455 km (0.113 R)
• M23: 5,457,031 km (0.058 R)
• M24: 5,647,619 km (0.075 R)
• M25: 5,808,137 km (0.103 R)
• M26: 6,166,424 km (0.108 R)
• M27: 6,532,041 km (0.082 R)
• M28: 6,599,211 km (0.098 R)
• M29: 7,635,027 km (0.059 R)
• M30: 8,426,399 km (0.079 R)
• M31: 8,906,309 km (0.087 R)
• M32: 8,980,809 km (0.101 R)
• M33: 9,093,157 km (0.029 R)
• M34: 11,314,087 km (0.037 R)
• M35: 12,380,121 km (0.103 R)
• M36: 12,756,510 km (0.107 R)
• M37: 13,434,936 km (0.117 R)
• M38: 14,255,929 km (0.101 R)
• M39: 16,036,593 km (0.116 R)
• M40: 16,446,790 km (0.119 R)
• M41: 16,953,029 km (0.088 R)
• M42: 17,091,856 km (0.064 R)
• M43: 17,231,132 km (0.064 R)
• M44: 18,406,672 km (0.076 R)
• M45: 18,549,388 km (0.069 R)
• M46: 19,365,594 km (0.062 R)
• M47: 19,559,323 km (0.118 R)
• M48: 19,656,412 km (0.099 R)
• M49: 20,438,959 km (0.075 R)
• M50: 20,982,897 km (0.098 R)
• M51: 22,439,681 km (0.116 R)
• M52: 23,103,297 km (0.06 R)
• M53: 23,721,585 km (0.026 R)
• M54: 24,188,779 km (0.119 R)
• M55: 24,554,396 km (0.09 R)
• M56: 24,606,755 km (0.101 R)
• M57: 24,869,150 km (0.096 R)
• M58: 25,714,976 km (0.11 R)
• M59: 25,768,233 km (0.1 R)
• M60: 26,248,592 km (0.052 R)
• M61: 26,731,793 km (0.1 R)
• M62: 29,413,933 km (0.095 R)
• M63: 30,984,711 km (0.038 R)
• M64: 31,041,259 km (0.03 R)
• M65: 31,495,438 km (0.11 R)
• M66: 32,066,004 km (0.119 R)
• M67: 32,755,351 km (0.065 R)
• M68: 33,275,503 km (0.099 R)
• M69: 33,333,547 km (0.048 R)
• M70: 33,740,154 km (0.109 R)
• M71: 33,798,497 km (0.078 R)
• M72: 34,148,556 km (0.111 R)
• M73: 34,265,542 km (0.112 R)
• M74: 34,852,414 km (0.105 R)
• M75: 35,029,089 km (0.112 R)
• M76: 35,206,064 km (0.111 R)
• M77: 35,798,322 km (0.112 R)
• M78: 36,095,573 km (0.093 R)
• M79: 37,473,818 km (0.057 R)
• M80: 37,534,106 km (0.086 R)
• M81: 37,594,543 km (0.115 R)
• M82: 38,139,080 km (0.071 R)
• M83: 38,503,500 km (0.113 R)
• M84: 38,869,267 km (0.027 R)
• M85: 38,991,339 km (0.081 R)
• M86: 39,236,081 km (0.088 R)
• M87: 39,973,149 km (0.085 R)
• M88: 40,034,784 km (0.106 R)
• M89: 41,025,122 km (0.078 R)
• M90: 41,211,670 km (0.115 R)
• M91: 41,710,579 km (0.091 R)

Planet 5 - Ice Giant

Semi-Major Axis: 9.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 837.6

Radius: 7.8

Gravity: 13.77 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 9.05 AU - 10.11 AU

Year: 20111 Days

Day: 18.2 Hours

Environment

Temp: -236 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 81,666,102 km

• M1: 178,620 km (0.102 R)
• M2: 363,224 km (0.07 R)
• M3: 458,817 km (0.108 R)
• M4: 901,776 km (0.116 R)
• M5: 2,872,279 km (0.117 R)
• M6: 3,236,700 km (0.051 R)
• M7: 3,572,846 km (0.076 R)
• M8: 4,008,924 km (0.078 R)
• M9: 4,415,680 km (0.114 R)
• M10: 5,966,412 km (0.097 R)
• M11: 6,119,750 km (0.081 R)
• M12: 6,482,674 km (0.055 R)
• M13: 6,905,887 km (0.111 R)
• M14: 7,013,148 km (0.092 R)
• M15: 7,283,621 km (0.102 R)
• M16: 8,285,478 km (0.082 R)
• M17: 8,456,768 km (0.114 R)
• M18: 9,448,751 km (0.081 R)
• M19: 9,807,636 km (0.093 R)
• M20: 10,049,387 km (0.118 R)
• M21: 10,110,123 km (0.113 R)
• M22: 10,293,081 km (0.08 R)
• M23: 10,724,372 km (0.099 R)
• M24: 10,973,453 km (0.111 R)
• M25: 11,287,459 km (0.068 R)
• M26: 11,477,298 km (0.09 R)
• M27: 12,247,278 km (0.049 R)
• M28: 12,638,477 km (0.108 R)
• M29: 13,366,420 km (0.103 R)
• M30: 13,701,669 km (0.115 R)
• M31: 14,862,548 km (0.037 R)
• M32: 16,125,753 km (0.027 R)
• M33: 16,914,582 km (0.094 R)
• M34: 17,131,948 km (0.059 R)
• M35: 17,277,357 km (0.113 R)
• M36: 18,380,791 km (0.079 R)
• M37: 18,604,141 km (0.043 R)
• M38: 18,828,538 km (0.116 R)
• M39: 19,053,682 km (0.066 R)
• M40: 19,279,874 km (0.091 R)
• M41: 19,810,947 km (0.12 R)
• M42: 23,177,348 km (0.089 R)
• M43: 25,711,685 km (0.063 R)
• M44: 25,878,188 km (0.102 R)
• M45: 25,961,514 km (0.116 R)
• M46: 26,296,015 km (0.106 R)
• M47: 26,631,862 km (0.06 R)
• M48: 27,562,959 km (0.099 R)
• M49: 27,733,351 km (0.083 R)
• M50: 30,067,975 km (0.116 R)
• M51: 31,481,077 km (0.099 R)
• M52: 31,659,248 km (0.06 R)
• M53: 32,016,487 km (0.079 R)
• M54: 33,459,060 km (0.097 R)
• M55: 35,107,180 km (0.106 R)
• M56: 36,781,479 km (0.118 R)
• M57: 38,862,984 km (0.11 R)
• M58: 40,400,700 km (0.106 R)
• M59: 40,788,308 km (0.041 R)
• M60: 41,469,427 km (0.045 R)
• M61: 41,860,327 km (0.088 R)
• M62: 43,634,557 km (0.068 R)
• M63: 44,931,272 km (0.095 R)
• M64: 46,442,958 km (0.115 R)
• M65: 47,052,270 km (0.089 R)
• M66: 47,358,048 km (0.111 R)
• M67: 47,460,074 km (0.1 R)
• M68: 48,176,349 km (0.109 R)
• M69: 48,896,214 km (0.094 R)
• M70: 48,999,436 km (0.116 R)
• M71: 50,242,594 km (0.063 R)
• M72: 52,126,929 km (0.109 R)
• M73: 52,337,713 km (0.11 R)
• M74: 54,889,254 km (0.039 R)
• M75: 55,964,264 km (0.099 R)
• M76: 56,288,144 km (0.036 R)
• M77: 57,263,372 km (0.088 R)
• M78: 58,025,872 km (0.069 R)
• M79: 59,011,124 km (0.098 R)
• M80: 60,887,231 km (0.12 R)
• M81: 61,999,790 km (0.11 R)
• M82: 63,681,420 km (0.11 R)
• M83: 64,019,511 km (0.045 R)
• M84: 65,037,525 km (0.066 R)
• M85: 66,860,225 km (0.088 R)
• M86: 68,469,001 km (0.112 R)
• M87: 69,046,598 km (0.115 R)
• M88: 69,974,254 km (0.09 R)
• M89: 71,958,969 km (0.109 R)
• M90: 73,371,024 km (0.039 R)
• M91: 75,506,384 km (0.07 R)
• M92: 78,264,220 km (0.078 R)
• M93: 80,080,638 km (0.109 R)
• M94: 80,323,884 km (0.092 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 269 - 17,993 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit