🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.51

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.46 AU - 0.56 AU

Year: 235 Days

Day: 14.2 Hours

Environment

Temp: -124 °C

Axial Tilt: 32.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 3.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 747.2

Radius: 8.4

Gravity: 10.59 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 2.76 AU - 4.3 AU

Year: 4282 Days

Day: 11.8 Hours

Environment

Temp: -217 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 90,710,379 km

• M1: 109,057 km (0.086 R)
• M2: 166,353 km (0.104 R)
• M3: 474,524 km (0.091 R)
• M4: 796,609 km (0.058 R)
• M5: 896,540 km (0.111 R)
• M6: 1,082,041 km (0.03 R)
• M7: 1,353,562 km (0.085 R)
• M8: 1,662,481 km (0.093 R)
• M9: 1,942,379 km (0.082 R)
• M10: 2,326,696 km (0.106 R)
• M11: 2,417,502 km (0.044 R)
• M12: 2,583,705 km (0.1 R)
• M13: 2,639,954 km (0.08 R)
• M14: 2,715,650 km (0.041 R)
• M15: 2,849,989 km (0.057 R)
• M16: 3,006,020 km (0.113 R)
• M17: 3,347,252 km (0.075 R)
• M18: 3,700,752 km (0.109 R)
• M19: 4,154,034 km (0.116 R)
• M20: 4,670,595 km (0.102 R)
• M21: 4,831,862 km (0.075 R)
• M22: 4,901,574 km (0.092 R)
• M23: 5,207,502 km (0.108 R)
• M24: 5,326,881 km (0.101 R)
• M25: 5,495,478 km (0.087 R)
• M26: 5,690,254 km (0.116 R)
• M27: 6,036,723 km (0.041 R)
• M28: 6,620,753 km (0.041 R)
• M29: 6,750,155 km (0.096 R)
• M30: 6,828,245 km (0.098 R)
• M31: 7,815,142 km (0.064 R)
• M32: 8,089,505 km (0.081 R)
• M33: 8,172,532 km (0.059 R)
• M34: 8,367,159 km (0.083 R)
• M35: 8,479,058 km (0.077 R)
• M36: 8,535,157 km (0.095 R)
• M37: 8,732,626 km (0.103 R)
• M38: 9,363,181 km (0.088 R)
• M39: 9,772,032 km (0.109 R)
• M40: 9,830,824 km (0.077 R)
• M41: 10,067,638 km (0.119 R)
• M42: 10,789,148 km (0.099 R)
• M43: 10,941,588 km (0.111 R)
• M44: 11,063,959 km (0.117 R)
• M45: 11,186,929 km (0.105 R)
• M46: 11,496,148 km (0.072 R)
• M47: 11,620,763 km (0.042 R)
• M48: 11,714,411 km (0.117 R)
• M49: 11,996,852 km (0.097 R)
• M50: 12,281,686 km (0.094 R)
• M51: 12,472,722 km (0.111 R)
• M52: 13,508,538 km (0.062 R)
• M53: 13,937,136 km (0.116 R)
• M54: 14,069,979 km (0.096 R)
• M55: 14,370,222 km (0.086 R)
• M56: 14,437,391 km (0.063 R)
• M57: 14,605,390 km (0.04 R)
• M58: 15,627,143 km (0.04 R)
• M59: 15,765,072 km (0.112 R)
• M60: 16,777,551 km (0.052 R)
• M61: 17,167,104 km (0.104 R)
• M62: 17,273,767 km (0.072 R)
• M63: 17,345,125 km (0.05 R)
• M64: 17,595,402 km (0.085 R)
• M65: 17,774,920 km (0.118 R)
• M66: 17,882,929 km (0.101 R)
• M67: 18,027,291 km (0.099 R)
• M68: 19,048,446 km (0.056 R)
• M69: 19,158,999 km (0.061 R)
• M70: 19,826,655 km (0.059 R)
• M71: 20,351,294 km (0.119 R)
• M72: 20,918,420 km (0.075 R)
• M73: 21,261,149 km (0.089 R)
• M74: 21,836,502 km (0.087 R)
• M75: 22,455,987 km (0.066 R)
• M76: 22,650,763 km (0.046 R)
• M77: 23,317,072 km (0.103 R)
• M78: 24,468,677 km (0.073 R)
• M79: 24,669,138 km (0.098 R)
• M80: 24,829,806 km (0.035 R)
• M81: 24,990,923 km (0.05 R)
• M82: 25,435,677 km (0.109 R)
• M83: 25,679,372 km (0.069 R)
• M84: 25,801,444 km (0.096 R)
• M85: 26,950,804 km (0.088 R)
• M86: 27,033,532 km (0.057 R)
• M87: 27,323,752 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 5.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 576.6

Radius: 13.1

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 5.01 AU - 5.19 AU

Year: 7437 Days

Day: 9.5 Hours

Environment

Temp: -224 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 90,710,379 km

• M1: 175,927 km (0.096 R)
• M2: 267,481 km (0.119 R)
• M3: 384,616 km (0.101 R)
• M4: 720,164 km (0.117 R)
• M5: 833,260 km (0.092 R)
• M6: 937,829 km (0.049 R)
• M7: 1,144,873 km (0.038 R)
• M8: 1,280,259 km (0.035 R)
• M9: 1,916,498 km (0.093 R)
• M10: 2,038,421 km (0.077 R)
• M11: 2,141,942 km (0.108 R)
• M12: 2,290,194 km (0.11 R)
• M13: 2,641,749 km (0.059 R)
• M14: 2,893,821 km (0.044 R)
• M15: 3,323,317 km (0.119 R)
• M16: 4,189,488 km (0.107 R)
• M17: 4,349,408 km (0.062 R)
• M18: 4,457,269 km (0.081 R)
• M19: 5,351,864 km (0.116 R)
• M20: 5,613,511 km (0.086 R)
• M21: 5,760,565 km (0.075 R)
• M22: 6,088,933 km (0.047 R)
• M23: 6,301,212 km (0.095 R)
• M24: 6,858,015 km (0.086 R)
• M25: 7,110,686 km (0.114 R)
• M26: 7,334,185 km (0.095 R)
• M27: 8,019,044 km (0.119 R)
• M28: 8,185,098 km (0.111 R)
• M29: 9,032,719 km (0.03 R)
• M30: 9,136,391 km (0.042 R)
• M31: 9,519,661 km (0.107 R)
• M32: 9,695,588 km (0.111 R)
• M33: 10,086,636 km (0.09 R)
• M34: 10,446,569 km (0.119 R)
• M35: 10,810,840 km (0.112 R)
• M36: 11,290,600 km (0.117 R)
• M37: 12,232,767 km (0.109 R)
• M38: 12,732,724 km (0.076 R)
• M39: 12,887,857 km (0.091 R)
• M40: 13,832,118 km (0.108 R)
• M41: 13,991,739 km (0.12 R)
• M42: 14,393,260 km (0.059 R)
• M43: 17,610,811 km (0.081 R)
• M44: 18,088,028 km (0.065 R)
• M45: 19,634,571 km (0.099 R)
• M46: 19,903,997 km (0.059 R)
• M47: 20,129,441 km (0.118 R)
• M48: 20,355,782 km (0.108 R)
• M49: 22,103,085 km (0.108 R)
• M50: 22,758,922 km (0.111 R)
• M51: 23,278,775 km (0.11 R)
• M52: 23,516,336 km (0.101 R)
• M53: 23,611,481 km (0.104 R)
• M54: 23,850,239 km (0.11 R)
• M55: 24,137,766 km (0.083 R)
• M56: 24,378,170 km (0.106 R)
• M57: 25,104,467 km (0.116 R)
• M58: 27,225,316 km (0.037 R)
• M59: 27,375,513 km (0.107 R)
• M60: 28,180,798 km (0.104 R)
• M61: 28,687,935 km (0.108 R)
• M62: 28,993,863 km (0.086 R)
• M63: 29,660,171 km (0.105 R)
• M64: 30,955,689 km (0.113 R)
• M65: 31,269,246 km (0.108 R)
• M66: 32,800,231 km (0.101 R)
• M67: 33,333,846 km (0.1 R)
• M68: 33,440,958 km (0.118 R)
• M69: 33,924,010 km (0.108 R)
• M70: 34,085,725 km (0.115 R)
• M71: 34,897,443 km (0.11 R)
• M72: 35,278,469 km (0.109 R)
• M73: 35,660,841 km (0.101 R)
• M74: 35,989,657 km (0.112 R)

Planet 4 - Ice Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 389.9

Radius: 3.8

Gravity: 27 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 5.56 AU - 9.18 AU

Year: 12919 Days

Day: 24.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 90,710,379 km

• M1: 94,396 km (0.118 R)
• M2: 151,543 km (0.061 R)
• M3: 180,415 km (0.072 R)
• M4: 267,780 km (0.114 R)
• M5: 423,811 km (0.085 R)
• M6: 956,678 km (0.081 R)
• M7: 1,112,410 km (0.108 R)
• M8: 1,152,502 km (0.079 R)
• M9: 1,382,284 km (0.041 R)
• M10: 1,648,868 km (0.068 R)
• M11: 1,835,267 km (0.094 R)
• M12: 1,931,159 km (0.106 R)
• M13: 2,127,581 km (0.074 R)
• M14: 2,228,260 km (0.073 R)
• M15: 2,700,242 km (0.114 R)
• M16: 2,864,350 km (0.114 R)
• M17: 3,493,260 km (0.115 R)
• M18: 3,552,501 km (0.109 R)
• M19: 3,672,029 km (0.078 R)
• M20: 3,702,099 km (0.116 R)
• M21: 3,884,309 km (0.094 R)
• M22: 3,976,611 km (0.108 R)
• M23: 4,448,442 km (0.108 R)
• M24: 5,071,069 km (0.104 R)
• M25: 5,966,561 km (0.086 R)
• M26: 6,073,075 km (0.058 R)
• M27: 6,614,619 km (0.028 R)
• M28: 7,898,319 km (0.116 R)
• M29: 8,528,275 km (0.107 R)
• M30: 8,568,218 km (0.116 R)
• M31: 9,835,910 km (0.1 R)
• M32: 10,003,759 km (0.08 R)
• M33: 10,130,169 km (0.049 R)
• M34: 12,045,022 km (0.116 R)
• M35: 12,179,660 km (0.1 R)
• M36: 12,404,955 km (0.101 R)
• M37: 12,540,939 km (0.111 R)
• M38: 12,905,659 km (0.12 R)
• M39: 13,366,420 km (0.087 R)
• M40: 14,589,682 km (0.097 R)
• M41: 14,637,404 km (0.08 R)
• M42: 15,069,592 km (0.081 R)
• M43: 15,166,232 km (0.113 R)
• M44: 15,408,581 km (0.111 R)
• M45: 15,554,738 km (0.108 R)
• M46: 16,291,956 km (0.1 R)
• M47: 16,739,703 km (0.105 R)
• M48: 18,674,452 km (0.029 R)
• M49: 19,562,614 km (0.027 R)
• M50: 21,379,780 km (0.101 R)
• M51: 21,596,996 km (0.068 R)
• M52: 21,979,069 km (0.096 R)
• M53: 23,250,052 km (0.101 R)
• M54: 23,305,852 km (0.107 R)
• M55: 23,978,893 km (0.099 R)
• M56: 24,204,636 km (0.072 R)
• M57: 24,544,672 km (0.108 R)
• M58: 24,886,204 km (0.106 R)
• M59: 29,165,750 km (0.051 R)
• M60: 29,406,603 km (0.092 R)
• M61: 31,111,869 km (0.101 R)
• M62: 32,225,027 km (0.117 R)
• M63: 32,536,490 km (0.115 R)
• M64: 33,351,050 km (0.109 R)
• M65: 33,918,924 km (0.08 R)
• M66: 34,362,780 km (0.106 R)
• M67: 34,872,460 km (0.062 R)
• M68: 35,256,329 km (0.114 R)
• M69: 37,523,185 km (0.11 R)
• M70: 38,377,090 km (0.057 R)
• M71: 39,171,006 km (0.066 R)
• M72: 40,305,107 km (0.06 R)
• M73: 40,707,825 km (0.111 R)
• M74: 41,856,287 km (0.09 R)
• M75: 42,878,490 km (0.115 R)
• M76: 43,427,065 km (0.085 R)
• M77: 44,185,077 km (0.076 R)
• M78: 44,947,428 km (0.051 R)
• M79: 45,225,830 km (0.061 R)
• M80: 45,434,968 km (0.061 R)
• M81: 45,714,267 km (0.059 R)
• M82: 46,064,176 km (0.05 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 421.2

Radius: 4.7

Gravity: 19.07 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 6.58 AU - 8.92 AU

Year: 13931 Days

Day: 17.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (97)

Outer Limit: 90,710,379 km

• M1: 88,263 km (0.097 R)
• M2: 978,819 km (0.075 R)
• M3: 1,039,556 km (0.117 R)
• M4: 1,452,446 km (0.102 R)
• M5: 1,522,009 km (0.078 R)
• M6: 1,616,405 km (0.054 R)
• M7: 1,712,746 km (0.096 R)
• M8: 2,013,139 km (0.066 R)
• M9: 2,064,750 km (0.115 R)
• M10: 2,222,426 km (0.075 R)
• M11: 2,633,521 km (0.109 R)
• M12: 2,747,066 km (0.119 R)
• M13: 3,097,574 km (0.096 R)
• M14: 3,247,770 km (0.081 R)
• M15: 3,369,692 km (0.088 R)
• M16: 4,099,281 km (0.078 R)
• M17: 4,164,954 km (0.031 R)
• M18: 4,771,873 km (0.064 R)
• M19: 5,050,574 km (0.108 R)
• M20: 5,623,384 km (0.117 R)
• M21: 5,991,844 km (0.1 R)
• M22: 6,482,525 km (0.111 R)
• M23: 6,868,637 km (0.12 R)
• M24: 7,381,757 km (0.051 R)
• M25: 8,277,998 km (0.102 R)
• M26: 8,528,275 km (0.117 R)
• M27: 9,597,900 km (0.075 R)
• M28: 9,685,265 km (0.062 R)
• M29: 9,949,006 km (0.116 R)
• M30: 10,126,130 km (0.079 R)
• M31: 10,259,721 km (0.057 R)
• M32: 11,027,457 km (0.106 R)
• M33: 12,095,287 km (0.058 R)
• M34: 12,521,940 km (0.093 R)
• M35: 13,487,894 km (0.117 R)
• M36: 14,477,484 km (0.065 R)
• M37: 15,798,582 km (0.11 R)
• M38: 17,104,871 km (0.087 R)
• M39: 17,690,397 km (0.051 R)
• M40: 18,771,990 km (0.093 R)
• M41: 18,936,098 km (0.114 R)
• M42: 19,155,559 km (0.093 R)
• M43: 19,320,715 km (0.114 R)
• M44: 19,486,469 km (0.079 R)
• M45: 19,930,476 km (0.087 R)
• M46: 19,986,276 km (0.086 R)
• M47: 20,659,167 km (0.059 R)
• M48: 21,168,697 km (0.074 R)
• M49: 21,567,974 km (0.118 R)
• M50: 22,605,884 km (0.102 R)
• M51: 23,955,556 km (0.046 R)
• M52: 24,252,358 km (0.097 R)
• M53: 25,029,968 km (0.055 R)
• M54: 26,793,577 km (0.103 R)
• M55: 26,855,211 km (0.037 R)
• M56: 27,287,250 km (0.118 R)
• M57: 27,908,380 km (0.098 R)
• M58: 28,785,772 km (0.104 R)
• M59: 29,164,703 km (0.06 R)
• M60: 29,481,552 km (0.109 R)
• M61: 29,545,131 km (0.1 R)
• M62: 30,375,100 km (0.094 R)
• M63: 30,631,959 km (0.112 R)
• M64: 30,889,716 km (0.096 R)
• M65: 31,148,072 km (0.029 R)
• M66: 31,471,951 km (0.11 R)
• M67: 31,862,252 km (0.114 R)
• M68: 32,581,818 km (0.103 R)
• M69: 35,919,346 km (0.111 R)
• M70: 36,463,434 km (0.032 R)
• M71: 36,668,084 km (0.075 R)
• M72: 37,697,467 km (0.065 R)
• M73: 38,111,703 km (0.12 R)
• M74: 38,180,967 km (0.063 R)
• M75: 38,945,113 km (0.08 R)
• M76: 39,994,991 km (0.086 R)
• M77: 40,347,144 km (0.096 R)
• M78: 40,488,215 km (0.039 R)
• M79: 40,558,825 km (0.041 R)
• M80: 40,770,955 km (0.118 R)
• M81: 41,125,352 km (0.052 R)
• M82: 41,480,647 km (0.106 R)
• M83: 41,694,273 km (0.086 R)
• M84: 43,706,514 km (0.08 R)
• M85: 44,214,399 km (0.086 R)
• M86: 44,578,370 km (0.12 R)
• M87: 44,870,385 km (0.114 R)
• M88: 45,750,021 km (0.105 R)
• M89: 45,823,473 km (0.103 R)
• M90: 46,118,181 km (0.118 R)
• M91: 46,265,685 km (0.084 R)
• M92: 48,123,241 km (0.076 R)
• M93: 48,198,040 km (0.091 R)
• M94: 48,647,732 km (0.091 R)
• M95: 50,080,879 km (0.108 R)
• M96: 50,232,571 km (0.052 R)
• M97: 50,536,255 km (0.083 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 984.3

Radius: 6.7

Gravity: 21.93 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 8.02 AU - 12.82 AU

Year: 21718 Days

Day: 16.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 90,710,379 km

• M1: 98,286 km (0.094 R)
• M2: 217,665 km (0.11 R)
• M3: 320,738 km (0.086 R)
• M4: 441,613 km (0.081 R)
• M5: 728,392 km (0.11 R)
• M6: 1,127,070 km (0.083 R)
• M7: 2,408,975 km (0.091 R)
• M8: 2,530,298 km (0.108 R)
• M9: 2,612,278 km (0.086 R)
• M10: 3,434,917 km (0.101 R)
• M11: 3,945,195 km (0.063 R)
• M12: 4,040,489 km (0.092 R)
• M13: 4,185,000 km (0.116 R)
• M14: 5,721,071 km (0.07 R)
• M15: 5,829,231 km (0.067 R)
• M16: 5,992,592 km (0.12 R)
• M17: 6,268,151 km (0.106 R)
• M18: 6,435,700 km (0.061 R)
• M19: 7,411,976 km (0.087 R)
• M20: 7,529,859 km (0.109 R)
• M21: 8,495,065 km (0.082 R)
• M22: 8,618,483 km (0.104 R)
• M23: 9,181,121 km (0.098 R)
• M24: 9,562,894 km (0.103 R)
• M25: 10,145,129 km (0.074 R)
• M26: 10,210,503 km (0.105 R)
• M27: 10,341,701 km (0.101 R)
• M28: 10,407,673 km (0.106 R)
• M29: 10,473,497 km (0.095 R)
• M30: 11,006,364 km (0.074 R)
• M31: 12,028,866 km (0.101 R)
• M32: 12,306,669 km (0.115 R)
• M33: 13,081,586 km (0.051 R)
• M34: 15,877,271 km (0.111 R)
• M35: 18,848,883 km (0.103 R)
• M36: 19,171,416 km (0.108 R)
• M37: 20,314,942 km (0.073 R)
• M38: 20,397,370 km (0.103 R)
• M39: 20,480,098 km (0.025 R)
• M40: 21,228,835 km (0.046 R)
• M41: 21,312,461 km (0.05 R)
• M42: 21,986,399 km (0.093 R)
• M43: 24,839,380 km (0.069 R)
• M44: 25,015,906 km (0.115 R)
• M45: 25,370,452 km (0.086 R)
• M46: 25,459,314 km (0.114 R)
• M47: 28,912,780 km (0.103 R)
• M48: 29,098,581 km (0.089 R)
• M49: 31,932,713 km (0.082 R)
• M50: 32,800,081 km (0.082 R)
• M51: 34,656,292 km (0.052 R)
• M52: 35,051,379 km (0.119 R)
• M53: 35,249,447 km (0.104 R)
• M54: 35,846,043 km (0.114 R)
• M55: 36,446,080 km (0.116 R)
• M56: 37,251,067 km (0.06 R)
• M57: 39,289,338 km (0.103 R)
• M58: 39,392,111 km (0.112 R)
• M59: 39,804,403 km (0.079 R)
• M60: 39,907,775 km (0.046 R)
• M61: 40,114,669 km (0.058 R)
• M62: 40,218,191 km (0.093 R)
• M63: 41,782,536 km (0.065 R)
• M64: 44,112,523 km (0.114 R)
• M65: 44,862,756 km (0.104 R)
• M66: 46,158,573 km (0.119 R)
• M67: 47,795,473 km (0.046 R)
• M68: 49,340,519 km (0.1 R)
• M69: 51,914,051 km (0.118 R)
• M70: 54,645,559 km (0.105 R)
• M71: 54,875,341 km (0.105 R)
• M72: 55,450,994 km (0.045 R)
• M73: 55,566,483 km (0.097 R)
• M74: 65,661,647 km (0.071 R)
• M75: 66,272,904 km (0.088 R)
• M76: 67,377,684 km (0.091 R)
• M77: 68,612,465 km (0.039 R)
• M78: 70,228,720 km (0.061 R)
• M79: 71,480,555 km (0.087 R)
• M80: 72,613,460 km (0.051 R)
• M81: 73,498,780 km (0.084 R)
• M82: 73,752,349 km (0.053 R)
• M83: 73,879,357 km (0.062 R)
• M84: 75,535,705 km (0.1 R)
• M85: 76,561,049 km (0.092 R)
• M86: 77,720,133 km (0.118 R)
• M87: 78,885,052 km (0.107 R)
• M88: 80,316,554 km (0.045 R)
• M89: 81,362,991 km (0.045 R)
• M90: 83,073,194 km (0.097 R)
• M91: 84,662,372 km (0.112 R)
• M92: 85,727,359 km (0.104 R)
• M93: 86,127,982 km (0.047 R)
• M94: 87,467,481 km (0.11 R)
• M95: 87,601,820 km (0.063 R)
• M96: 88,678,925 km (0.044 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: 283 - 15,082 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit