🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 176.4

Radius: 9.8

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.63 AU - 0.99 AU

Year: 503 Days

Day: 8.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 31,336,333 km

• M1: 131,646 km (0.095 R)
• M2: 195,076 km (0.094 R)
• M3: 267,032 km (0.067 R)
• M4: 349,311 km (0.114 R)
• M5: 445,502 km (0.113 R)
• M6: 515,664 km (0.099 R)
• M7: 650,601 km (0.097 R)
• M8: 735,722 km (0.093 R)
• M9: 798,105 km (0.071 R)
• M10: 890,257 km (0.114 R)
• M11: 957,277 km (0.093 R)
• M12: 1,018,911 km (0.083 R)
• M13: 1,097,001 km (0.099 R)
• M14: 1,212,192 km (0.092 R)
• M15: 1,291,478 km (0.081 R)
• M16: 1,421,928 km (0.099 R)
• M17: 1,497,325 km (0.046 R)
• M18: 1,722,919 km (0.117 R)
• M19: 1,922,482 km (0.094 R)
• M20: 2,101,102 km (0.112 R)
• M21: 2,173,059 km (0.068 R)
• M22: 2,236,189 km (0.062 R)
• M23: 2,389,228 km (0.095 R)
• M24: 2,469,562 km (0.041 R)
• M25: 2,561,116 km (0.106 R)
• M26: 2,716,249 km (0.074 R)
• M27: 2,821,416 km (0.085 R)
• M28: 2,954,857 km (0.097 R)
• M29: 3,244,628 km (0.027 R)
• M30: 3,317,183 km (0.099 R)
• M31: 3,452,569 km (0.116 R)
• M32: 3,595,435 km (0.091 R)
• M33: 3,699,555 km (0.087 R)
• M34: 3,845,862 km (0.069 R)
• M35: 3,910,937 km (0.091 R)
• M36: 4,054,102 km (0.113 R)
• M37: 4,132,342 km (0.093 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.6

Radius: 14.1

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.85 AU - 0.93 AU

Year: 580 Days

Day: 9.4 Hours

Environment

Temp: -167 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 31,336,333 km

• M1: 175,927 km (0.098 R)
• M2: 275,410 km (0.094 R)
• M3: 563,386 km (0.11 R)
• M4: 768,335 km (0.099 R)
• M5: 876,494 km (0.055 R)
• M6: 1,000,361 km (0.11 R)
• M7: 1,120,488 km (0.097 R)
• M8: 1,229,994 km (0.052 R)
• M9: 1,326,933 km (0.114 R)
• M10: 1,454,989 km (0.079 R)
• M11: 1,569,880 km (0.089 R)
• M12: 1,706,014 km (0.109 R)
• M13: 1,864,887 km (0.117 R)
• M14: 1,984,266 km (0.069 R)
• M15: 2,119,353 km (0.106 R)
• M16: 2,237,685 km (0.107 R)
• M17: 2,331,184 km (0.109 R)
• M18: 2,501,875 km (0.081 R)
• M19: 2,697,998 km (0.066 R)
• M20: 2,834,132 km (0.101 R)
• M21: 3,309,554 km (0.111 R)
• M22: 3,455,711 km (0.045 R)
• M23: 3,604,112 km (0.093 R)
• M24: 3,818,635 km (0.101 R)
• M25: 3,972,123 km (0.112 R)
• M26: 4,111,249 km (0.094 R)
• M27: 4,227,037 km (0.108 R)
• M28: 4,470,583 km (0.102 R)
• M29: 4,675,681 km (0.044 R)
• M30: 4,788,029 km (0.103 R)
• M31: 4,892,598 km (0.117 R)
• M32: 5,095,154 km (0.106 R)
• M33: 5,219,919 km (0.074 R)
• M34: 5,318,653 km (0.101 R)
• M35: 5,436,087 km (0.116 R)
• M36: 5,572,670 km (0.058 R)
• M37: 5,710,450 km (0.088 R)
• M38: 5,821,601 km (0.064 R)
• M39: 5,952,050 km (0.106 R)
• M40: 6,359,106 km (0.03 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 199.9

Radius: 12.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.83 AU - 1.21 AU

Year: 711 Days

Day: 9 Hours

Environment

Temp: -184 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 31,336,333 km

• M1: 219,610 km (0.107 R)
• M2: 306,975 km (0.079 R)
• M3: 470,784 km (0.1 R)
• M4: 551,418 km (0.083 R)
• M5: 645,066 km (0.102 R)
• M6: 733,778 km (0.106 R)
• M7: 835,205 km (0.059 R)
• M8: 975,827 km (0.083 R)
• M9: 1,098,198 km (0.106 R)
• M10: 1,184,366 km (0.04 R)
• M11: 1,325,437 km (0.026 R)
• M12: 1,522,757 km (0.09 R)
• M13: 1,687,913 km (0.058 R)
• M14: 1,799,513 km (0.08 R)
• M15: 1,969,157 km (0.081 R)
• M16: 2,047,546 km (0.072 R)
• M17: 2,190,262 km (0.091 R)
• M18: 2,277,478 km (0.09 R)
• M19: 2,371,874 km (0.107 R)
• M20: 2,546,455 km (0.118 R)
• M21: 2,663,291 km (0.058 R)
• M22: 2,807,054 km (0.059 R)
• M23: 2,921,497 km (0.114 R)
• M24: 3,063,465 km (0.093 R)
• M25: 3,148,437 km (0.073 R)
• M26: 3,314,191 km (0.114 R)
• M27: 3,408,288 km (0.089 R)
• M28: 3,523,778 km (0.111 R)
• M29: 3,619,969 km (0.086 R)
• M30: 3,710,027 km (0.115 R)
• M31: 3,970,627 km (0.041 R)
• M32: 4,056,346 km (0.068 R)
• M33: 4,332,354 km (0.077 R)
• M34: 4,480,007 km (0.096 R)
• M35: 4,569,467 km (0.075 R)
• M36: 4,856,695 km (0.115 R)
• M37: 5,041,149 km (0.082 R)
• M38: 5,142,128 km (0.067 R)
• M39: 5,251,633 km (0.113 R)
• M40: 5,330,172 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.5

Radius: 13.3

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 1.01 AU - 1.09 AU

Year: 743 Days

Day: 8.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 31,336,333 km

• M1: 166,203 km (0.04 R)
• M2: 326,273 km (0.105 R)
• M3: 531,072 km (0.106 R)
• M4: 650,003 km (0.107 R)
• M5: 806,931 km (0.064 R)
• M6: 907,760 km (0.063 R)
• M7: 1,013,376 km (0.116 R)
• M8: 1,104,930 km (0.052 R)
• M9: 1,277,566 km (0.083 R)
• M10: 1,418,337 km (0.109 R)
• M11: 1,501,215 km (0.114 R)
• M12: 1,636,002 km (0.091 R)
• M13: 1,918,293 km (0.096 R)
• M14: 2,010,745 km (0.104 R)
• M15: 2,120,699 km (0.07 R)
• M16: 2,248,905 km (0.112 R)
• M17: 2,363,198 km (0.036 R)
• M18: 2,589,539 km (0.077 R)
• M19: 2,700,990 km (0.043 R)
• M20: 2,840,564 km (0.079 R)
• M21: 2,964,731 km (0.077 R)
• M22: 3,063,615 km (0.095 R)
• M23: 3,172,672 km (0.095 R)
• M24: 3,301,625 km (0.067 R)
• M25: 3,767,174 km (0.045 R)
• M26: 3,973,170 km (0.042 R)
• M27: 4,102,572 km (0.075 R)
• M28: 4,304,380 km (0.101 R)
• M29: 4,603,126 km (0.117 R)
• M30: 4,749,732 km (0.108 R)
• M31: 4,929,848 km (0.07 R)
• M32: 5,026,189 km (0.079 R)
• M33: 5,188,204 km (0.083 R)
• M34: 5,417,836 km (0.086 R)
• M35: 5,584,040 km (0.119 R)
• M36: 5,718,229 km (0.11 R)
• M37: 5,808,287 km (0.093 R)
• M38: 6,058,265 km (0.076 R)
• M39: 6,323,652 km (0.071 R)
• M40: 6,782,319 km (0.088 R)
• M41: 6,985,622 km (0.072 R)
• M42: 7,130,433 km (0.032 R)
• M43: 7,227,522 km (0.038 R)
• M44: 7,533,749 km (0.099 R)
• M45: 7,706,983 km (0.109 R)
• M46: 7,819,182 km (0.1 R)
• M47: 8,057,790 km (0.115 R)
• M48: 8,146,352 km (0.077 R)
• M49: 8,375,386 km (0.076 R)
• M50: 8,762,097 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 287.8

Radius: 10.3

Gravity: 2.71 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.11 AU - 1.39 AU

Year: 965 Days

Day: 7.4 Hours

Environment

Temp: -187 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 31,336,333 km

• M1: 133,441 km (0.119 R)
• M2: 223,798 km (0.054 R)
• M3: 308,770 km (0.057 R)
• M4: 421,417 km (0.108 R)
• M5: 500,405 km (0.105 R)
• M6: 568,023 km (0.108 R)
• M7: 657,632 km (0.093 R)
• M8: 737,966 km (0.094 R)
• M9: 812,017 km (0.111 R)
• M10: 941,569 km (0.074 R)
• M11: 1,006,345 km (0.101 R)
• M12: 1,257,520 km (0.057 R)
• M13: 1,372,261 km (0.069 R)
• M14: 1,453,044 km (0.113 R)
• M15: 1,541,756 km (0.073 R)
• M16: 1,698,235 km (0.064 R)
• M17: 1,785,301 km (0.09 R)
• M18: 1,860,100 km (0.054 R)
• M19: 2,041,263 km (0.094 R)
• M20: 2,141,344 km (0.099 R)
• M21: 2,228,559 km (0.032 R)
• M22: 2,406,431 km (0.099 R)
• M23: 2,481,829 km (0.097 R)
• M24: 2,604,349 km (0.115 R)
• M25: 2,689,770 km (0.093 R)
• M26: 2,776,237 km (0.09 R)
• M27: 3,041,026 km (0.108 R)
• M28: 3,106,549 km (0.098 R)
• M29: 3,381,660 km (0.083 R)
• M30: 3,449,428 km (0.105 R)
• M31: 3,552,201 km (0.068 R)
• M32: 3,638,669 km (0.092 R)
• M33: 3,804,723 km (0.115 R)
• M34: 3,928,739 km (0.077 R)
• M35: 4,126,358 km (0.046 R)
• M36: 4,208,188 km (0.078 R)
• M37: 4,327,268 km (0.063 R)
• M38: 4,428,995 km (0.085 R)
• M39: 4,531,619 km (0.066 R)
• M40: 4,625,417 km (0.11 R)
• M41: 4,910,999 km (0.092 R)
• M42: 4,997,915 km (0.116 R)
• M43: 5,143,773 km (0.115 R)
• M44: 5,281,104 km (0.095 R)
• M45: 5,640,139 km (0.078 R)
• M46: 5,761,463 km (0.093 R)
• M47: 5,832,821 km (0.103 R)
• M48: 5,945,319 km (0.081 R)
• M49: 6,141,441 km (0.12 R)
• M50: 6,214,296 km (0.071 R)
• M51: 6,466,069 km (0.119 R)
• M52: 6,550,741 km (0.107 R)
• M53: 6,646,484 km (0.118 R)
• M54: 7,285,566 km (0.076 R)
• M55: 7,384,899 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 902.6

Radius: 14.2

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.27 AU - 1.29 AU

Year: 1000 Days

Day: 7.5 Hours

Environment

Temp: -180 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 31,336,333 km

• M1: 201,359 km (0.119 R)
• M2: 297,401 km (0.109 R)
• M3: 497,712 km (0.094 R)
• M4: 588,668 km (0.106 R)
• M5: 856,448 km (0.097 R)
• M6: 1,027,438 km (0.113 R)
• M7: 1,128,716 km (0.077 R)
• M8: 1,241,214 km (0.118 R)
• M9: 1,373,608 km (0.072 R)
• M10: 1,511,238 km (0.025 R)
• M11: 1,748,500 km (0.069 R)
• M12: 1,845,140 km (0.081 R)
• M13: 1,943,725 km (0.086 R)
• M14: 2,081,056 km (0.111 R)
• M15: 2,212,403 km (0.052 R)
• M16: 2,704,580 km (0.088 R)
• M17: 2,807,204 km (0.07 R)
• M18: 3,101,613 km (0.071 R)
• M19: 3,395,273 km (0.093 R)
• M20: 3,484,134 km (0.047 R)
• M21: 4,092,250 km (0.112 R)
• M22: 4,499,904 km (0.108 R)
• M23: 4,610,158 km (0.07 R)
• M24: 4,808,225 km (0.113 R)
• M25: 5,110,862 km (0.109 R)
• M26: 5,328,975 km (0.088 R)
• M27: 5,445,662 km (0.119 R)
• M28: 5,721,520 km (0.08 R)
• M29: 5,867,827 km (0.115 R)
• M30: 6,150,716 km (0.114 R)
• M31: 6,660,097 km (0.105 R)
• M32: 6,898,706 km (0.101 R)
• M33: 7,183,091 km (0.063 R)
• M34: 7,355,578 km (0.104 R)
• M35: 7,456,855 km (0.114 R)
• M36: 7,631,586 km (0.106 R)
• M37: 7,955,465 km (0.059 R)
• M38: 8,044,625 km (0.066 R)
• M39: 8,495,364 km (0.101 R)
• M40: 8,662,614 km (0.086 R)
• M41: 8,861,879 km (0.052 R)
• M42: 8,954,330 km (0.112 R)
• M43: 9,109,014 km (0.082 R)
• M44: 9,202,363 km (0.104 R)
• M45: 9,311,719 km (0.091 R)
• M46: 9,468,498 km (0.108 R)
• M47: 9,578,901 km (0.035 R)
• M48: 9,721,318 km (0.108 R)
• M49: 9,816,762 km (0.098 R)
• M50: 10,008,546 km (0.118 R)
• M51: 10,314,624 km (0.103 R)
• M52: 10,509,550 km (0.066 R)
• M53: 10,673,060 km (0.048 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 114.2

Radius: 13

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 2.89 AU - 3.13 AU

Year: 3605 Days

Day: 13.1 Hours

Environment

Temp: -207 °C

Axial Tilt: 47.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 31,336,333 km

• M1: 171,140 km (0.075 R)
• M2: 465,997 km (0.119 R)
• M3: 766,240 km (0.114 R)
• M4: 867,967 km (0.118 R)
• M5: 1,046,437 km (0.072 R)
• M6: 1,169,706 km (0.095 R)
• M7: 1,386,922 km (0.088 R)
• M8: 1,542,354 km (0.118 R)
• M9: 1,801,757 km (0.111 R)
• M10: 1,921,734 km (0.055 R)
• M11: 2,003,265 km (0.084 R)
• M12: 2,330,735 km (0.08 R)
• M13: 2,506,512 km (0.116 R)
• M14: 2,629,931 km (0.111 R)
• M15: 2,744,074 km (0.075 R)
• M16: 2,953,660 km (0.088 R)
• M17: 3,060,623 km (0.046 R)
• M18: 3,501,039 km (0.117 R)
• M19: 3,589,152 km (0.112 R)
• M20: 3,729,026 km (0.102 R)
• M21: 4,040,638 km (0.107 R)
• M22: 4,226,289 km (0.103 R)
• M23: 4,333,850 km (0.106 R)
• M24: 4,442,159 km (0.113 R)
• M25: 4,565,129 km (0.066 R)
• M26: 4,675,532 km (0.094 R)
• M27: 5,140,033 km (0.029 R)
• M28: 5,254,924 km (0.107 R)
• M29: 5,458,078 km (0.036 R)
• M30: 5,634,305 km (0.102 R)
• M31: 6,007,402 km (0.083 R)
• M32: 6,605,793 km (0.056 R)
• M33: 6,699,591 km (0.056 R)
• M34: 7,095,128 km (0.044 R)
• M35: 7,207,326 km (0.114 R)
• M36: 7,433,369 km (0.072 R)
• M37: 7,563,519 km (0.099 R)
• M38: 7,694,566 km (0.041 R)
• M39: 7,793,301 km (0.108 R)
• M40: 7,875,879 km (0.08 R)
• M41: 8,344,120 km (0.116 R)
• M42: 8,496,411 km (0.094 R)
• M43: 8,804,134 km (0.041 R)
• M44: 9,395,195 km (0.111 R)
• M45: 9,536,116 km (0.09 R)
• M46: 9,784,598 km (0.106 R)
• M47: 10,017,223 km (0.054 R)
• M48: 10,342,299 km (0.118 R)
• M49: 10,469,607 km (0.114 R)
• M50: 10,652,565 km (0.053 R)
• M51: 10,947,273 km (0.113 R)
• M52: 11,170,174 km (0.087 R)
• M53: 11,319,622 km (0.08 R)
• M54: 11,563,915 km (0.094 R)
• M55: 12,019,441 km (0.113 R)
• M56: 12,115,184 km (0.111 R)
• M57: 12,268,671 km (0.065 R)
• M58: 12,422,906 km (0.1 R)
• M59: 12,928,697 km (0.117 R)
• M60: 13,065,878 km (0.071 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.7

Radius: 10.7

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 4.12 AU - 6.7 AU

Year: 8686 Days

Day: 5.5 Hours

Environment

Temp: -216 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 31,336,333 km

• M1: 140,921 km (0.106 R)
• M2: 295,157 km (0.09 R)
• M3: 471,532 km (0.107 R)
• M4: 774,019 km (0.111 R)
• M5: 879,187 km (0.086 R)
• M6: 975,528 km (0.096 R)
• M7: 1,119,740 km (0.118 R)
• M8: 1,194,689 km (0.119 R)
• M9: 1,286,990 km (0.097 R)
• M10: 1,413,999 km (0.041 R)
• M11: 1,595,611 km (0.078 R)
• M12: 1,715,289 km (0.079 R)
• M13: 2,074,174 km (0.102 R)
• M14: 2,243,519 km (0.091 R)
• M15: 2,515,937 km (0.09 R)
• M16: 2,656,260 km (0.103 R)
• M17: 2,903,096 km (0.047 R)
• M18: 3,050,450 km (0.109 R)
• M19: 3,986,783 km (0.059 R)
• M20: 4,151,042 km (0.059 R)
• M21: 4,269,822 km (0.102 R)
• M22: 4,905,613 km (0.104 R)
• M23: 5,107,271 km (0.107 R)
• M24: 5,234,729 km (0.08 R)
• M25: 5,597,204 km (0.071 R)
• M26: 5,675,893 km (0.115 R)
• M27: 6,373,916 km (0.044 R)
• M28: 6,733,101 km (0.057 R)
• M29: 6,816,876 km (0.106 R)
• M30: 7,298,581 km (0.109 R)
• M31: 7,587,155 km (0.098 R)
• M32: 7,820,677 km (0.086 R)
• M33: 8,839,589 km (0.106 R)
• M34: 9,116,195 km (0.061 R)
• M35: 9,302,295 km (0.06 R)
• M36: 9,899,789 km (0.098 R)
• M37: 10,251,493 km (0.089 R)
• M38: 10,445,073 km (0.087 R)
• M39: 11,000,081 km (0.051 R)
• M40: 11,098,965 km (0.119 R)
• M41: 11,297,781 km (0.072 R)
• M42: 12,002,686 km (0.109 R)
• M43: 12,138,670 km (0.063 R)
• M44: 12,756,659 km (0.079 R)
• M45: 13,069,468 km (0.041 R)
• M46: 13,809,230 km (0.091 R)
• M47: 13,880,438 km (0.063 R)
• M48: 14,707,565 km (0.091 R)
• M49: 15,773,300 km (0.106 R)
• M50: 16,221,645 km (0.1 R)
• M51: 16,485,087 km (0.072 R)
• M52: 16,674,029 km (0.099 R)
• M53: 17,016,159 km (0.084 R)
• M54: 17,322,237 km (0.063 R)
• M55: 18,329,330 km (0.098 R)
• M56: 18,564,497 km (0.094 R)
• M57: 19,315,628 km (0.091 R)
• M58: 19,634,870 km (0.052 R)
• M59: 19,996,149 km (0.117 R)
• M60: 20,481,295 km (0.103 R)
• M61: 20,603,217 km (0.064 R)
• M62: 20,888,500 km (0.081 R)
• M63: 22,418,438 km (0.052 R)
• M64: 23,260,375 km (0.092 R)
• M65: 23,898,709 km (0.115 R)
• M66: 24,413,475 km (0.111 R)
• M67: 25,497,611 km (0.091 R)
• M68: 25,803,987 km (0.112 R)
• M69: 25,935,633 km (0.105 R)
• M70: 26,376,199 km (0.106 R)
• M71: 26,597,454 km (0.043 R)
• M72: 26,774,877 km (0.117 R)
• M73: 28,208,324 km (0.093 R)
• M74: 28,344,009 km (0.104 R)
• M75: 28,434,516 km (0.102 R)
• M76: 29,988,838 km (0.11 R)
• M77: 30,081,140 km (0.117 R)
• M78: 30,451,245 km (0.063 R)
• M79: 30,776,321 km (0.112 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 185 - 17,204 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit