🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 306

Radius: 11.9

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.53 AU - 0.65 AU

Year: 302 Days

Day: 6.8 Hours

Environment

Temp: -149 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 61,635,328 km

• M1: 151,393 km (0.104 R)
• M2: 227,987 km (0.118 R)
• M3: 305,778 km (0.097 R)
• M4: 384,766 km (0.065 R)
• M5: 482,902 km (0.12 R)
• M6: 594,502 km (0.085 R)
• M7: 671,844 km (0.026 R)
• M8: 753,225 km (0.098 R)
• M9: 961,914 km (0.091 R)
• M10: 1,062,145 km (0.075 R)
• M11: 1,193,641 km (0.118 R)
• M12: 1,270,385 km (0.066 R)
• M13: 1,356,254 km (0.065 R)
• M14: 1,436,588 km (0.097 R)
• M15: 1,649,017 km (0.076 R)
• M16: 1,751,342 km (0.12 R)
• M17: 1,888,374 km (0.114 R)
• M18: 1,974,841 km (0.08 R)
• M19: 2,066,994 km (0.027 R)
• M20: 2,255,637 km (0.065 R)
• M21: 2,352,127 km (0.107 R)
• M22: 2,427,674 km (0.077 R)
• M23: 2,508,607 km (0.08 R)
• M24: 2,604,200 km (0.07 R)
• M25: 2,719,689 km (0.071 R)
• M26: 2,808,550 km (0.044 R)
• M27: 2,936,606 km (0.082 R)
• M28: 3,076,480 km (0.117 R)
• M29: 3,169,231 km (0.051 R)
• M30: 3,253,155 km (0.118 R)
• M31: 3,367,747 km (0.098 R)
• M32: 3,458,404 km (0.116 R)
• M33: 3,544,871 km (0.114 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 306.4

Radius: 10.6

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.77 AU - 1.07 AU

Year: 588 Days

Day: 14.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 61,635,328 km

• M1: 133,142 km (0.071 R)
• M2: 227,838 km (0.117 R)
• M3: 297,849 km (0.085 R)
• M4: 409,449 km (0.033 R)
• M5: 478,264 km (0.047 R)
• M6: 573,109 km (0.101 R)
• M7: 645,365 km (0.051 R)
• M8: 717,322 km (0.091 R)
• M9: 828,922 km (0.048 R)
• M10: 938,278 km (0.117 R)
• M11: 1,098,198 km (0.098 R)
• M12: 1,262,456 km (0.091 R)
• M13: 1,350,270 km (0.098 R)
• M14: 1,425,219 km (0.085 R)
• M15: 1,522,158 km (0.106 R)
• M16: 1,610,720 km (0.066 R)
• M17: 1,843,046 km (0.112 R)
• M18: 1,932,356 km (0.115 R)
• M19: 2,017,327 km (0.048 R)
• M20: 2,138,651 km (0.085 R)
• M21: 2,310,090 km (0.073 R)
• M22: 2,406,731 km (0.101 R)
• M23: 2,498,584 km (0.106 R)
• M24: 2,572,934 km (0.092 R)
• M25: 2,660,598 km (0.099 R)
• M26: 2,781,324 km (0.114 R)
• M27: 3,001,831 km (0.1 R)
• M28: 3,074,535 km (0.06 R)
• M29: 3,147,689 km (0.119 R)
• M30: 3,248,518 km (0.099 R)
• M31: 3,398,265 km (0.071 R)
• M32: 3,467,080 km (0.072 R)
• M33: 3,585,263 km (0.111 R)
• M34: 3,789,912 km (0.078 R)
• M35: 3,890,143 km (0.116 R)
• M36: 4,064,125 km (0.073 R)
• M37: 4,196,220 km (0.114 R)
• M38: 4,322,331 km (0.074 R)
• M39: 4,525,336 km (0.112 R)
• M40: 4,608,811 km (0.11 R)
• M41: 4,816,303 km (0.042 R)
• M42: 5,042,495 km (0.117 R)
• M43: 5,288,135 km (0.103 R)
• M44: 5,448,803 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.1

Radius: 14.1

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.94 AU - 1.4 AU

Year: 844 Days

Day: 13 Hours

Environment

Temp: -180 °C

Axial Tilt: 72 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 61,635,328 km

• M1: 179,218 km (0.095 R)
• M2: 336,894 km (0.097 R)
• M3: 435,928 km (0.065 R)
• M4: 553,961 km (0.079 R)
• M5: 646,861 km (0.117 R)
• M6: 736,022 km (0.114 R)
• M7: 923,617 km (0.056 R)
• M8: 1,239,867 km (0.064 R)
• M9: 1,329,476 km (0.058 R)
• M10: 1,502,112 km (0.104 R)
• M11: 1,907,522 km (0.065 R)
• M12: 2,119,503 km (0.098 R)
• M13: 2,259,975 km (0.078 R)
• M14: 2,363,497 km (0.099 R)
• M15: 2,793,740 km (0.081 R)
• M16: 2,914,017 km (0.065 R)
• M17: 3,106,400 km (0.08 R)
• M18: 3,294,145 km (0.116 R)
• M19: 3,384,951 km (0.069 R)
• M20: 3,504,181 km (0.065 R)
• M21: 3,908,843 km (0.095 R)
• M22: 4,200,110 km (0.096 R)
• M23: 4,498,707 km (0.105 R)
• M24: 4,742,701 km (0.071 R)
• M25: 4,876,591 km (0.109 R)
• M26: 5,074,659 km (0.085 R)
• M27: 5,190,597 km (0.113 R)
• M28: 5,286,190 km (0.098 R)
• M29: 5,414,545 km (0.092 R)
• M30: 5,630,714 km (0.1 R)
• M31: 5,816,664 km (0.052 R)
• M32: 5,904,927 km (0.03 R)
• M33: 6,049,289 km (0.09 R)
• M34: 6,161,188 km (0.117 R)
• M35: 6,558,371 km (0.088 R)
• M36: 6,707,969 km (0.116 R)
• M37: 7,069,397 km (0.09 R)
• M38: 7,329,847 km (0.104 R)
• M39: 7,461,343 km (0.109 R)
• M40: 7,702,196 km (0.096 R)
• M41: 7,848,054 km (0.026 R)
• M42: 8,154,879 km (0.069 R)
• M43: 8,266,330 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 279.1

Radius: 8.6

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.19 AU - 1.29 AU

Year: 921 Days

Day: 13.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 61,635,328 km

• M1: 136,882 km (0.097 R)
• M2: 214,523 km (0.102 R)
• M3: 315,951 km (0.106 R)
• M4: 403,765 km (0.106 R)
• M5: 546,780 km (0.085 R)
• M6: 607,367 km (0.085 R)
• M7: 661,223 km (0.104 R)
• M8: 784,192 km (0.042 R)
• M9: 909,854 km (0.096 R)
• M10: 1,042,548 km (0.114 R)
• M11: 1,147,715 km (0.078 R)
• M12: 1,216,081 km (0.084 R)
• M13: 1,309,430 km (0.109 R)
• M14: 1,363,136 km (0.073 R)
• M15: 1,460,374 km (0.08 R)
• M16: 1,610,571 km (0.111 R)
• M17: 1,668,315 km (0.109 R)
• M18: 1,940,135 km (0.106 R)
• M19: 1,994,888 km (0.035 R)
• M20: 2,077,914 km (0.103 R)
• M21: 2,162,288 km (0.118 R)
• M22: 2,363,347 km (0.087 R)
• M23: 2,429,320 km (0.111 R)
• M24: 2,563,210 km (0.088 R)
• M25: 2,699,494 km (0.111 R)
• M26: 2,768,458 km (0.06 R)
• M27: 2,963,534 km (0.108 R)
• M28: 3,114,777 km (0.089 R)
• M29: 3,227,873 km (0.05 R)
• M30: 3,424,894 km (0.103 R)
• M31: 3,491,465 km (0.025 R)
• M32: 3,600,522 km (0.059 R)
• M33: 3,702,398 km (0.086 R)
• M34: 3,926,047 km (0.079 R)
• M35: 4,172,135 km (0.106 R)
• M36: 4,243,344 km (0.079 R)
• M37: 4,350,904 km (0.107 R)
• M38: 4,486,739 km (0.106 R)
• M39: 4,568,869 km (0.091 R)
• M40: 4,669,847 km (0.11 R)
• M41: 4,743,898 km (0.12 R)
• M42: 4,827,673 km (0.071 R)
• M43: 5,024,843 km (0.101 R)
• M44: 5,110,263 km (0.107 R)
• M45: 5,176,984 km (0.101 R)
• M46: 5,320,897 km (0.112 R)
• M47: 5,534,523 km (0.098 R)
• M48: 5,632,509 km (0.077 R)
• M49: 5,900,140 km (0.088 R)
• M50: 6,121,246 km (0.111 R)
• M51: 6,406,678 km (0.066 R)
• M52: 6,540,718 km (0.117 R)
• M53: 6,696,449 km (0.057 R)
• M54: 6,769,603 km (0.111 R)
• M55: 7,032,895 km (0.069 R)
• M56: 7,096,624 km (0.108 R)
• M57: 7,192,516 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 402.2

Radius: 12.5

Gravity: 2.57 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 3.64 AU - 3.72 AU

Year: 4708 Days

Day: 5.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 61,635,328 km

• M1: 172,786 km (0.087 R)
• M2: 355,744 km (0.071 R)
• M3: 475,272 km (0.079 R)
• M4: 564,732 km (0.038 R)
• M5: 651,200 km (0.115 R)
• M6: 732,581 km (0.117 R)
• M7: 953,238 km (0.101 R)
• M8: 1,183,918 km (0.084 R)
• M9: 1,339,350 km (0.114 R)
• M10: 1,474,287 km (0.114 R)
• M11: 1,557,463 km (0.043 R)
• M12: 1,922,183 km (0.086 R)
• M13: 2,578,170 km (0.081 R)
• M14: 2,765,616 km (0.066 R)
• M15: 3,046,411 km (0.094 R)
• M16: 3,904,953 km (0.061 R)
• M17: 4,361,376 km (0.087 R)
• M18: 4,524,139 km (0.096 R)
• M19: 4,606,418 km (0.115 R)
• M20: 4,876,891 km (0.055 R)
• M21: 5,131,357 km (0.113 R)
• M22: 5,653,304 km (0.03 R)
• M23: 5,920,785 km (0.096 R)
• M24: 6,514,538 km (0.104 R)
• M25: 6,630,926 km (0.052 R)
• M26: 6,842,158 km (0.108 R)
• M27: 7,175,312 km (0.096 R)
• M28: 7,367,994 km (0.067 R)
• M29: 7,587,006 km (0.119 R)
• M30: 8,156,226 km (0.08 R)
• M31: 9,100,936 km (0.116 R)
• M32: 9,179,026 km (0.093 R)
• M33: 9,335,954 km (0.097 R)
• M34: 9,467,451 km (0.098 R)
• M35: 10,214,991 km (0.118 R)
• M36: 10,898,654 km (0.111 R)
• M37: 11,540,578 km (0.109 R)
• M38: 11,625,251 km (0.067 R)
• M39: 11,880,464 km (0.096 R)
• M40: 12,686,199 km (0.115 R)
• M41: 13,213,681 km (0.098 R)
• M42: 14,563,353 km (0.115 R)
• M43: 15,084,552 km (0.044 R)
• M44: 15,331,987 km (0.088 R)
• M45: 15,580,768 km (0.093 R)
• M46: 16,082,369 km (0.106 R)
• M47: 16,240,345 km (0.074 R)
• M48: 16,876,884 km (0.072 R)
• M49: 17,037,253 km (0.026 R)
• M50: 17,424,412 km (0.104 R)
• M51: 18,273,081 km (0.04 R)
• M52: 18,569,883 km (0.115 R)
• M53: 19,235,444 km (0.115 R)
• M54: 19,369,484 km (0.099 R)
• M55: 19,571,141 km (0.103 R)
• M56: 19,908,784 km (0.042 R)
• M57: 20,316,588 km (0.107 R)
• M58: 20,418,913 km (0.055 R)
• M59: 20,864,565 km (0.082 R)
• M60: 21,002,344 km (0.096 R)
• M61: 21,452,185 km (0.041 R)
• M62: 22,150,358 km (0.092 R)
• M63: 22,608,128 km (0.106 R)
• M64: 22,856,011 km (0.068 R)
• M65: 23,104,793 km (0.077 R)
• M66: 24,000,435 km (0.048 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 311.2

Radius: 3.2

Gravity: 30.39 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 4.92 AU - 7.38 AU

Year: 10170 Days

Day: 16.5 Hours

Environment

Temp: -238 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 61,635,328 km

• M1: 178,171 km (0.093 R)
• M2: 204,949 km (0.094 R)
• M3: 283,488 km (0.117 R)
• M4: 348,862 km (0.114 R)
• M5: 383,419 km (0.119 R)
• M6: 729,290 km (0.103 R)
• M7: 835,205 km (0.085 R)
• M8: 1,324,540 km (0.101 R)
• M9: 1,510,490 km (0.112 R)
• M10: 1,764,507 km (0.105 R)
• M11: 1,865,785 km (0.114 R)
• M12: 2,245,763 km (0.077 R)
• M13: 3,828,808 km (0.118 R)
• M14: 4,253,516 km (0.114 R)
• M15: 4,389,351 km (0.094 R)
• M16: 5,291,576 km (0.114 R)
• M17: 5,703,718 km (0.103 R)
• M18: 6,217,886 km (0.077 R)
• M19: 7,096,773 km (0.052 R)
• M20: 7,160,951 km (0.116 R)
• M21: 7,616,177 km (0.105 R)
• M22: 7,814,095 km (0.028 R)
• M23: 7,880,517 km (0.108 R)
• M24: 7,913,727 km (0.053 R)
• M25: 8,013,659 km (0.082 R)
• M26: 8,080,679 km (0.113 R)
• M27: 8,350,104 km (0.08 R)
• M28: 8,794,410 km (0.067 R)
• M29: 9,106,322 km (0.096 R)
• M30: 9,528,038 km (0.08 R)
• M31: 9,848,477 km (0.119 R)
• M32: 9,920,134 km (0.096 R)
• M33: 10,064,047 km (0.104 R)
• M34: 10,100,100 km (0.096 R)
• M35: 10,172,356 km (0.091 R)
• M36: 10,244,911 km (0.073 R)
• M37: 10,573,129 km (0.104 R)
• M38: 11,090,438 km (0.056 R)
• M39: 11,277,136 km (0.082 R)
• M40: 11,314,685 km (0.063 R)
• M41: 12,034,700 km (0.077 R)
• M42: 12,303,527 km (0.117 R)
• M43: 12,808,270 km (0.041 R)
• M44: 13,043,588 km (0.06 R)
• M45: 13,122,276 km (0.047 R)
• M46: 13,478,619 km (0.07 R)
• M47: 13,837,953 km (0.057 R)
• M48: 13,958,529 km (0.105 R)
• M49: 13,998,770 km (0.105 R)
• M50: 14,322,051 km (0.109 R)
• M51: 14,688,865 km (0.096 R)
• M52: 16,355,685 km (0.081 R)
• M53: 16,568,263 km (0.114 R)
• M54: 16,996,113 km (0.092 R)
• M55: 17,039,048 km (0.109 R)
• M56: 17,211,385 km (0.098 R)
• M57: 17,254,469 km (0.12 R)
• M58: 18,698,986 km (0.104 R)
• M59: 18,876,559 km (0.088 R)
• M60: 19,054,879 km (0.094 R)
• M61: 19,413,166 km (0.105 R)
• M62: 19,864,054 km (0.103 R)
• M63: 20,272,755 km (0.096 R)
• M64: 21,006,234 km (0.079 R)
• M65: 21,701,714 km (0.118 R)
• M66: 21,748,389 km (0.083 R)
• M67: 21,795,063 km (0.079 R)
• M68: 22,640,740 km (0.065 R)
• M69: 23,019,971 km (0.089 R)
• M70: 23,640,802 km (0.107 R)
• M71: 24,025,717 km (0.074 R)
• M72: 24,073,888 km (0.073 R)
• M73: 24,412,577 km (0.093 R)
• M74: 25,980,513 km (0.102 R)
• M75: 26,079,546 km (0.119 R)
• M76: 26,876,604 km (0.099 R)
• M77: 26,976,834 km (0.054 R)
• M78: 27,177,595 km (0.082 R)
• M79: 28,036,436 km (0.116 R)
• M80: 28,290,753 km (0.099 R)
• M81: 28,443,642 km (0.104 R)
• M82: 28,852,792 km (0.085 R)
• M83: 29,160,963 km (0.073 R)
• M84: 29,573,554 km (0.077 R)
• M85: 29,936,180 km (0.049 R)
• M86: 32,408,434 km (0.096 R)
• M87: 33,642,018 km (0.091 R)
• M88: 34,020,501 km (0.096 R)
• M89: 34,074,655 km (0.077 R)
• M90: 35,164,326 km (0.034 R)
• M91: 36,320,717 km (0.115 R)
• M92: 36,764,425 km (0.064 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 814.8

Radius: 6.7

Gravity: 18.15 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 7.22 AU - 7.54 AU

Year: 13369 Days

Day: 22.8 Hours

Environment

Temp: -230 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 61,635,328 km

• M1: 93,499 km (0.067 R)
• M2: 613,202 km (0.092 R)
• M3: 1,150,856 km (0.099 R)
• M4: 1,502,262 km (0.107 R)
• M5: 2,147,777 km (0.095 R)
• M6: 2,267,904 km (0.063 R)
• M7: 2,738,539 km (0.052 R)
• M8: 3,552,501 km (0.119 R)
• M9: 3,659,164 km (0.088 R)
• M10: 3,730,971 km (0.11 R)
• M11: 3,949,085 km (0.09 R)
• M12: 4,783,841 km (0.098 R)
• M13: 5,140,781 km (0.101 R)
• M14: 5,838,356 km (0.067 R)
• M15: 6,478,186 km (0.109 R)
• M16: 6,828,544 km (0.085 R)
• M17: 6,961,537 km (0.09 R)
• M18: 7,320,273 km (0.104 R)
• M19: 8,432,533 km (0.104 R)
• M20: 8,623,120 km (0.116 R)
• M21: 9,154,193 km (0.079 R)
• M22: 9,895,450 km (0.093 R)
• M23: 9,995,681 km (0.111 R)
• M24: 10,349,480 km (0.085 R)
• M25: 10,604,544 km (0.078 R)
• M26: 11,017,135 km (0.074 R)
• M27: 11,330,094 km (0.057 R)
• M28: 11,487,620 km (0.103 R)
• M29: 12,071,501 km (0.101 R)
• M30: 12,178,613 km (0.111 R)
• M31: 12,664,956 km (0.066 R)
• M32: 13,768,240 km (0.116 R)
• M33: 14,444,871 km (0.067 R)
• M34: 14,672,858 km (0.036 R)
• M35: 15,305,807 km (0.107 R)
• M36: 15,771,804 km (0.036 R)
• M37: 16,420,161 km (0.064 R)
• M38: 16,837,240 km (0.099 R)
• M39: 17,197,472 km (0.08 R)
• M40: 18,109,421 km (0.049 R)
• M41: 18,725,913 km (0.105 R)
• M42: 19,853,133 km (0.079 R)
• M43: 20,361,018 km (0.058 R)
• M44: 20,937,718 km (0.086 R)
• M45: 22,172,499 km (0.071 R)
• M46: 22,633,410 km (0.105 R)
• M47: 23,297,176 km (0.108 R)
• M48: 23,765,716 km (0.091 R)
• M49: 24,440,403 km (0.091 R)
• M50: 25,395,585 km (0.062 R)
• M51: 25,877,589 km (0.081 R)
• M52: 25,946,703 km (0.102 R)
• M53: 27,201,530 km (0.084 R)
• M54: 27,482,924 km (0.09 R)
• M55: 27,977,943 km (0.116 R)
• M56: 31,229,303 km (0.088 R)
• M57: 31,450,409 km (0.081 R)
• M58: 31,524,161 km (0.114 R)
• M59: 31,893,817 km (0.111 R)
• M60: 32,264,970 km (0.092 R)
• M61: 32,413,969 km (0.093 R)
• M62: 33,462,501 km (0.096 R)
• M63: 36,751,709 km (0.095 R)
• M64: 37,531,413 km (0.1 R)
• M65: 37,766,282 km (0.068 R)
• M66: 39,504,160 km (0.115 R)
• M67: 39,663,332 km (0.118 R)
• M68: 40,302,564 km (0.104 R)
• M69: 41,834,446 km (0.11 R)
• M70: 42,485,047 km (0.055 R)
• M71: 44,291,591 km (0.089 R)
• M72: 44,457,046 km (0.079 R)
• M73: 44,539,924 km (0.054 R)
• M74: 44,871,732 km (0.037 R)
• M75: 46,458,666 km (0.074 R)
• M76: 47,639,891 km (0.05 R)
• M77: 47,724,563 km (0.09 R)
• M78: 48,404,336 km (0.065 R)
• M79: 49,258,540 km (0.078 R)
• M80: 49,859,474 km (0.077 R)
• M81: 50,117,830 km (0.039 R)
• M82: 51,242,207 km (0.111 R)
• M83: 51,763,855 km (0.118 R)
• M84: 54,487,434 km (0.099 R)
• M85: 54,753,419 km (0.118 R)
• M86: 55,286,885 km (0.106 R)
• M87: 55,375,896 km (0.11 R)
• M88: 55,465,056 km (0.094 R)
• M89: 55,732,687 km (0.084 R)
• M90: 58,886,359 km (0.119 R)
• M91: 60,806,299 km (0.076 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 360 - 11,738 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit