🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.39

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.59 AU - 0.75 AU

Year: 360 Days

Day: 34.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 294.6

Radius: 8.7

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.95 AU - 1.45 AU

Year: 862 Days

Day: 9.5 Hours

Environment

Temp: -167 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (47)

Outer Limit: 86,807,480 km

• M1: 112,198 km (0.092 R)
• M2: 181,313 km (0.05 R)
• M3: 256,710 km (0.116 R)
• M4: 315,053 km (0.098 R)
• M5: 372,349 km (0.117 R)
• M6: 430,393 km (0.067 R)
• M7: 496,067 km (0.037 R)
• M8: 569,968 km (0.095 R)
• M9: 716,275 km (0.116 R)
• M10: 900,430 km (0.071 R)
• M11: 998,416 km (0.115 R)
• M12: 1,222,364 km (0.097 R)
• M13: 1,414,448 km (0.102 R)
• M14: 1,548,039 km (0.099 R)
• M15: 1,692,401 km (0.073 R)
• M16: 1,920,388 km (0.112 R)
• M17: 1,987,557 km (0.031 R)
• M18: 2,117,109 km (0.1 R)
• M19: 2,270,596 km (0.077 R)
• M20: 2,384,740 km (0.109 R)
• M21: 2,456,995 km (0.065 R)
• M22: 2,566,800 km (0.077 R)
• M23: 2,745,869 km (0.12 R)
• M24: 2,921,497 km (0.101 R)
• M25: 2,998,989 km (0.081 R)
• M26: 3,085,007 km (0.09 R)
• M27: 3,156,066 km (0.078 R)
• M28: 3,413,075 km (0.112 R)
• M29: 3,568,956 km (0.119 R)
• M30: 3,718,853 km (0.107 R)
• M31: 3,836,737 km (0.119 R)
• M32: 3,896,277 km (0.027 R)
• M33: 4,085,219 km (0.09 R)
• M34: 4,154,632 km (0.095 R)
• M35: 4,321,284 km (0.084 R)
• M36: 4,852,656 km (0.057 R)
• M37: 5,018,859 km (0.099 R)
• M38: 5,102,634 km (0.109 R)
• M39: 5,158,883 km (0.106 R)
• M40: 5,538,562 km (0.088 R)
• M41: 5,780,462 km (0.119 R)
• M42: 6,124,836 km (0.062 R)
• M43: 6,284,607 km (0.06 R)
• M44: 6,435,700 km (0.082 R)
• M45: 6,516,633 km (0.067 R)
• M46: 6,720,684 km (0.1 R)
• M47: 6,802,963 km (0.046 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 748.1

Radius: 14.3

Gravity: 3.66 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.46 AU - 2.28 AU

Year: 1678 Days

Day: 11.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 86,807,480 km

• M1: 240,105 km (0.116 R)
• M2: 369,208 km (0.112 R)
• M3: 507,286 km (0.099 R)
• M4: 612,304 km (0.103 R)
• M5: 946,655 km (0.117 R)
• M6: 1,136,345 km (0.095 R)
• M7: 1,282,652 km (0.118 R)
• M8: 1,514,828 km (0.084 R)
• M9: 1,667,268 km (0.117 R)
• M10: 1,761,216 km (0.104 R)
• M11: 1,933,104 km (0.113 R)
• M12: 2,032,437 km (0.118 R)
• M13: 2,156,154 km (0.065 R)
• M14: 2,305,752 km (0.095 R)
• M15: 2,435,154 km (0.078 R)
• M16: 2,652,370 km (0.085 R)
• M17: 2,825,904 km (0.092 R)
• M18: 2,990,461 km (0.037 R)
• M19: 3,171,325 km (0.089 R)
• M20: 3,302,672 km (0.119 R)
• M21: 3,571,200 km (0.117 R)
• M22: 3,680,706 km (0.07 R)
• M23: 4,087,014 km (0.029 R)
• M24: 4,346,716 km (0.115 R)
• M25: 4,478,511 km (0.089 R)
• M26: 4,716,372 km (0.104 R)
• M27: 5,004,198 km (0.095 R)
• M28: 5,220,068 km (0.09 R)
• M29: 5,725,111 km (0.111 R)
• M30: 5,902,384 km (0.112 R)
• M31: 6,032,534 km (0.097 R)
• M32: 6,279,071 km (0.085 R)
• M33: 6,495,540 km (0.099 R)
• M34: 6,884,494 km (0.113 R)
• M35: 7,021,526 km (0.104 R)
• M36: 7,228,868 km (0.085 R)
• M37: 7,350,791 km (0.084 R)
• M38: 7,526,269 km (0.059 R)
• M39: 7,702,944 km (0.119 R)
• M40: 7,970,724 km (0.041 R)
• M41: 8,241,646 km (0.088 R)
• M42: 8,405,605 km (0.094 R)
• M43: 9,317,703 km (0.086 R)
• M44: 9,450,546 km (0.098 R)
• M45: 9,775,922 km (0.077 R)
• M46: 10,143,932 km (0.048 R)
• M47: 10,873,671 km (0.111 R)
• M48: 10,973,602 km (0.059 R)
• M49: 11,134,121 km (0.106 R)
• M50: 11,518,587 km (0.07 R)
• M51: 11,825,113 km (0.114 R)
• M52: 12,300,535 km (0.12 R)
• M53: 12,425,450 km (0.094 R)
• M54: 12,803,184 km (0.037 R)
• M55: 13,014,716 km (0.075 R)
• M56: 13,334,107 km (0.083 R)
• M57: 13,570,023 km (0.083 R)
• M58: 13,785,593 km (0.077 R)
• M59: 13,915,594 km (0.086 R)
• M60: 14,527,449 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 505.9

Radius: 14.7

Gravity: 2.34 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 2.59 AU - 3.29 AU

Year: 3307 Days

Day: 10.5 Hours

Environment

Temp: -206 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 86,807,480 km

• M1: 184,604 km (0.096 R)
• M2: 305,928 km (0.097 R)
• M3: 419,323 km (0.116 R)
• M4: 531,072 km (0.112 R)
• M5: 647,460 km (0.111 R)
• M6: 755,918 km (0.06 R)
• M7: 881,580 km (0.107 R)
• M8: 973,284 km (0.093 R)
• M9: 1,509,443 km (0.111 R)
• M10: 1,660,536 km (0.081 R)
• M11: 2,075,072 km (0.093 R)
• M12: 2,230,205 km (0.106 R)
• M13: 2,330,884 km (0.096 R)
• M14: 2,552,289 km (0.117 R)
• M15: 3,000,185 km (0.113 R)
• M16: 3,225,629 km (0.057 R)
• M17: 3,625,056 km (0.117 R)
• M18: 4,526,682 km (0.087 R)
• M19: 4,711,435 km (0.109 R)
• M20: 4,842,333 km (0.099 R)
• M21: 5,012,426 km (0.119 R)
• M22: 5,127,018 km (0.084 R)
• M23: 5,300,552 km (0.099 R)
• M24: 5,515,225 km (0.093 R)
• M25: 5,653,304 km (0.076 R)
• M26: 6,156,252 km (0.053 R)
• M27: 6,258,577 km (0.108 R)
• M28: 6,423,583 km (0.078 R)
• M29: 6,673,711 km (0.112 R)
• M30: 6,905,887 km (0.101 R)
• M31: 7,033,643 km (0.107 R)
• M32: 7,162,297 km (0.104 R)
• M33: 7,662,553 km (0.039 R)
• M34: 7,928,089 km (0.061 R)
• M35: 8,039,539 km (0.113 R)
• M36: 8,151,738 km (0.118 R)
• M37: 8,332,153 km (0.091 R)
• M38: 8,513,914 km (0.064 R)
• M39: 8,697,022 km (0.034 R)
• M40: 8,858,288 km (0.108 R)
• M41: 9,727,452 km (0.12 R)
• M42: 9,991,043 km (0.085 R)
• M43: 10,550,091 km (0.062 R)
• M44: 10,870,529 km (0.116 R)
• M45: 11,069,345 km (0.103 R)
• M46: 11,194,259 km (0.096 R)
• M47: 12,261,939 km (0.03 R)
• M48: 12,572,953 km (0.1 R)
• M49: 12,703,402 km (0.099 R)
• M50: 12,886,660 km (0.062 R)
• M51: 13,415,189 km (0.083 R)
• M52: 14,194,295 km (0.097 R)
• M53: 14,877,658 km (0.039 R)
• M54: 15,181,790 km (0.056 R)
• M55: 15,292,792 km (0.038 R)
• M56: 15,965,234 km (0.119 R)
• M57: 16,418,815 km (0.079 R)
• M58: 16,647,251 km (0.091 R)
• M59: 16,876,734 km (0.107 R)
• M60: 17,193,882 km (0.083 R)
• M61: 17,922,274 km (0.085 R)
• M62: 18,393,806 km (0.109 R)
• M63: 18,601,298 km (0.047 R)
• M64: 19,288,701 km (0.102 R)
• M65: 20,014,998 km (0.042 R)
• M66: 20,596,336 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330.8

Radius: 8.1

Gravity: 5.04 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 3.36 AU - 4.62 AU

Year: 5228 Days

Day: 9.7 Hours

Environment

Temp: -209 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 86,807,480 km

• M1: 154,535 km (0.069 R)
• M2: 295,157 km (0.098 R)
• M3: 422,764 km (0.109 R)
• M4: 503,546 km (0.105 R)
• M5: 746,045 km (0.117 R)
• M6: 987,496 km (0.046 R)
• M7: 1,136,495 km (0.111 R)
• M8: 1,373,907 km (0.025 R)
• M9: 1,470,547 km (0.049 R)
• M10: 1,541,157 km (0.096 R)
• M11: 1,627,176 km (0.085 R)
• M12: 1,729,800 km (0.117 R)
• M13: 1,864,887 km (0.103 R)
• M14: 2,034,830 km (0.071 R)
• M15: 2,226,016 km (0.085 R)
• M16: 2,291,091 km (0.118 R)
• M17: 2,456,547 km (0.111 R)
• M18: 2,574,729 km (0.118 R)
• M19: 2,746,916 km (0.077 R)
• M20: 3,030,254 km (0.079 R)
• M21: 3,102,510 km (0.11 R)
• M22: 3,510,763 km (0.104 R)
• M23: 3,586,759 km (0.09 R)
• M24: 4,377,383 km (0.12 R)
• M25: 4,500,502 km (0.052 R)
• M26: 4,771,424 km (0.065 R)
• M27: 5,112,058 km (0.118 R)
• M28: 5,285,293 km (0.09 R)
• M29: 5,660,035 km (0.088 R)
• M30: 5,727,055 km (0.031 R)
• M31: 5,816,814 km (0.092 R)
• M32: 6,669,372 km (0.101 R)
• M33: 8,361,175 km (0.093 R)
• M34: 8,694,030 km (0.077 R)
• M35: 9,346,576 km (0.096 R)
• M36: 10,341,102 km (0.053 R)
• M37: 10,809,194 km (0.117 R)
• M38: 11,115,720 km (0.098 R)
• M39: 11,453,512 km (0.057 R)
• M40: 11,794,595 km (0.041 R)
• M41: 12,254,758 km (0.117 R)
• M42: 13,609,816 km (0.081 R)
• M43: 13,941,026 km (0.109 R)
• M44: 14,335,665 km (0.105 R)
• M45: 14,919,096 km (0.108 R)
• M46: 15,136,013 km (0.077 R)
• M47: 15,385,243 km (0.101 R)
• M48: 15,761,632 km (0.033 R)
• M49: 15,950,873 km (0.04 R)
• M50: 16,172,727 km (0.075 R)
• M51: 16,236,306 km (0.084 R)
• M52: 16,300,034 km (0.106 R)
• M53: 16,812,258 km (0.111 R)
• M54: 16,876,585 km (0.075 R)
• M55: 17,167,403 km (0.105 R)
• M56: 17,557,704 km (0.044 R)
• M57: 17,623,078 km (0.095 R)
• M58: 17,753,976 km (0.119 R)
• M59: 18,115,704 km (0.052 R)
• M60: 18,214,738 km (0.109 R)
• M61: 18,712,898 km (0.089 R)
• M62: 18,980,379 km (0.102 R)
• M63: 19,620,658 km (0.088 R)
• M64: 19,756,344 km (0.107 R)
• M65: 20,336,634 km (0.111 R)
• M66: 20,749,673 km (0.12 R)
• M67: 21,130,550 km (0.098 R)
• M68: 21,339,388 km (0.077 R)
• M69: 21,409,101 km (0.081 R)
• M70: 21,759,010 km (0.082 R)
• M71: 21,969,943 km (0.061 R)
• M72: 22,358,150 km (0.072 R)
• M73: 23,356,865 km (0.106 R)
• M74: 23,428,672 km (0.068 R)
• M75: 23,897,811 km (0.114 R)
• M76: 24,042,771 km (0.064 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 648.4

Radius: 4.4

Gravity: 33.49 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 8.98 AU - 10.16 AU

Year: 19421 Days

Day: 16.6 Hours

Environment

Temp: -236 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (85)

Outer Limit: 86,807,480 km

• M1: 326,871 km (0.108 R)
• M2: 473,776 km (0.104 R)
• M3: 534,064 km (0.082 R)
• M4: 1,077,254 km (0.096 R)
• M5: 1,267,842 km (0.07 R)
• M6: 1,498,522 km (0.097 R)
• M7: 1,742,366 km (0.113 R)
• M8: 2,474,648 km (0.032 R)
• M9: 2,725,524 km (0.071 R)
• M10: 3,605,458 km (0.096 R)
• M11: 3,726,333 km (0.101 R)
• M12: 3,848,405 km (0.119 R)
• M13: 4,096,738 km (0.107 R)
• M14: 4,180,662 km (0.091 R)
• M15: 4,783,841 km (0.098 R)
• M16: 7,867,801 km (0.085 R)
• M17: 9,205,355 km (0.119 R)
• M18: 10,382,242 km (0.068 R)
• M19: 10,611,725 km (0.086 R)
• M20: 11,134,270 km (0.094 R)
• M21: 12,204,194 km (0.117 R)
• M22: 12,385,657 km (0.089 R)
• M23: 12,446,244 km (0.074 R)
• M24: 12,507,130 km (0.088 R)
• M25: 13,182,265 km (0.104 R)
• M26: 13,680,875 km (0.116 R)
• M27: 14,122,039 km (0.097 R)
• M28: 15,277,832 km (0.035 R)
• M29: 15,538,880 km (0.117 R)
• M30: 17,338,543 km (0.103 R)
• M31: 17,610,661 km (0.094 R)
• M32: 19,838,473 km (0.087 R)
• M33: 20,409,189 km (0.091 R)
• M34: 21,275,211 km (0.08 R)
• M35: 21,420,770 km (0.115 R)
• M36: 21,566,627 km (0.059 R)
• M37: 22,745,159 km (0.025 R)
• M38: 24,247,571 km (0.103 R)
• M39: 26,247,994 km (0.117 R)
• M40: 28,141,155 km (0.099 R)
• M41: 28,541,030 km (0.044 R)
• M42: 28,621,214 km (0.03 R)
• M43: 28,942,700 km (0.116 R)
• M44: 29,265,532 km (0.081 R)
• M45: 31,807,050 km (0.116 R)
• M46: 32,977,953 km (0.054 R)
• M47: 33,907,704 km (0.113 R)
• M48: 35,965,871 km (0.118 R)
• M49: 37,711,828 km (0.12 R)
• M50: 37,887,905 km (0.119 R)
• M51: 38,683,765 km (0.111 R)
• M52: 39,306,541 km (0.029 R)
• M53: 40,291,943 km (0.038 R)
• M54: 41,376,228 km (0.069 R)
• M55: 41,467,034 km (0.098 R)
• M56: 41,557,840 km (0.097 R)
• M57: 42,378,384 km (0.082 R)
• M58: 44,778,981 km (0.1 R)
• M59: 47,888,822 km (0.113 R)
• M60: 49,517,793 km (0.079 R)
• M61: 50,290,615 km (0.114 R)
• M62: 50,387,555 km (0.078 R)
• M63: 50,484,494 km (0.099 R)
• M64: 54,611,899 km (0.112 R)
• M65: 57,423,143 km (0.103 R)
• M66: 58,744,241 km (0.109 R)
• M67: 58,846,267 km (0.027 R)
• M68: 59,255,118 km (0.085 R)
• M69: 59,972,590 km (0.085 R)
• M70: 60,281,060 km (0.115 R)
• M71: 60,486,907 km (0.098 R)
• M72: 60,589,980 km (0.111 R)
• M73: 61,520,030 km (0.076 R)
• M74: 61,727,223 km (0.1 R)
• M75: 61,831,044 km (0.029 R)
• M76: 62,350,597 km (0.057 R)
• M77: 62,558,838 km (0.106 R)
• M78: 63,080,336 km (0.116 R)
• M79: 64,127,970 km (0.091 R)
• M80: 65,921,798 km (0.094 R)
• M81: 69,666,831 km (0.057 R)
• M82: 71,075,295 km (0.1 R)
• M83: 71,619,382 km (0.041 R)
• M84: 71,728,439 km (0.089 R)
• M85: 72,602,539 km (0.106 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 974.4

Radius: 6.3

Gravity: 24.55 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 7.64 AU - 12.16 AU

Year: 20434 Days

Day: 20.9 Hours

Environment

Temp: -227 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 86,807,480 km

• M1: 118,631 km (0.119 R)
• M2: 206,894 km (0.073 R)
• M3: 305,479 km (0.103 R)
• M4: 1,077,254 km (0.108 R)
• M5: 1,227,750 km (0.117 R)
• M6: 1,515,576 km (0.112 R)
• M7: 1,582,446 km (0.07 R)
• M8: 2,265,660 km (0.108 R)
• M9: 2,498,584 km (0.097 R)
• M10: 2,739,137 km (0.036 R)
• M11: 2,820,967 km (0.078 R)
• M12: 2,945,283 km (0.107 R)
• M13: 2,987,170 km (0.116 R)
• M14: 3,638,669 km (0.085 R)
• M15: 5,370,863 km (0.104 R)
• M16: 6,050,486 km (0.037 R)
• M17: 6,211,154 km (0.055 R)
• M18: 7,489,169 km (0.112 R)
• M19: 8,069,459 km (0.078 R)
• M20: 8,845,423 km (0.037 R)
• M21: 8,906,160 km (0.103 R)
• M22: 10,403,335 km (0.057 R)
• M23: 10,467,363 km (0.093 R)
• M24: 10,854,522 km (0.103 R)
• M25: 11,180,646 km (0.055 R)
• M26: 11,909,636 km (0.04 R)
• M27: 12,178,613 km (0.117 R)
• M28: 14,258,173 km (0.085 R)
• M29: 15,120,306 km (0.084 R)
• M30: 17,196,874 km (0.105 R)
• M31: 18,578,111 km (0.114 R)
• M32: 19,518,782 km (0.065 R)
• M33: 20,474,713 km (0.046 R)
• M34: 20,555,047 km (0.119 R)
• M35: 20,958,362 km (0.116 R)
• M36: 22,019,311 km (0.118 R)
• M37: 24,023,324 km (0.113 R)
• M38: 27,048,492 km (0.08 R)
• M39: 27,934,710 km (0.095 R)
• M40: 28,023,870 km (0.094 R)
• M41: 28,830,352 km (0.1 R)
• M42: 29,281,689 km (0.088 R)
• M43: 30,099,989 km (0.075 R)
• M44: 31,666,279 km (0.092 R)
• M45: 33,447,690 km (0.028 R)
• M46: 35,550,887 km (0.063 R)
• M47: 35,744,167 km (0.108 R)
• M48: 35,840,957 km (0.11 R)
• M49: 36,131,925 km (0.098 R)
• M50: 37,893,589 km (0.092 R)
• M51: 38,387,861 km (0.117 R)
• M52: 39,482,917 km (0.093 R)
• M53: 40,487,168 km (0.06 R)
• M54: 40,992,509 km (0.094 R)
• M55: 42,316,151 km (0.084 R)
• M56: 43,034,670 km (0.062 R)
• M57: 44,275,734 km (0.102 R)
• M58: 45,005,023 km (0.12 R)
• M59: 45,633,334 km (0.112 R)
• M60: 46,370,104 km (0.096 R)
• M61: 46,898,783 km (0.101 R)
• M62: 47,535,771 km (0.088 R)
• M63: 48,068,788 km (0.111 R)
• M64: 49,571,798 km (0.087 R)
• M65: 50,220,604 km (0.096 R)
• M66: 50,872,252 km (0.1 R)
• M67: 55,063,984 km (0.09 R)
• M68: 59,479,665 km (0.116 R)
• M69: 59,824,039 km (0.067 R)
• M70: 62,253,060 km (0.08 R)
• M71: 62,486,133 km (0.106 R)
• M72: 63,890,259 km (0.074 R)
• M73: 65,304,706 km (0.117 R)
• M74: 65,423,038 km (0.098 R)
• M75: 66,491,317 km (0.04 R)
• M76: 66,848,706 km (0.119 R)
• M77: 67,087,315 km (0.105 R)
• M78: 67,924,764 km (0.087 R)
• M79: 71,796,506 km (0.038 R)
• M80: 72,040,799 km (0.099 R)
• M81: 72,163,170 km (0.12 R)
• M82: 72,530,284 km (0.113 R)
• M83: 72,652,954 km (0.025 R)
• M84: 76,985,607 km (0.112 R)
• M85: 77,611,375 km (0.031 R)
• M86: 77,862,251 km (0.065 R)
• M87: 78,490,263 km (0.066 R)
• M88: 81,783,660 km (0.091 R)
• M89: 82,038,874 km (0.06 R)
• M90: 82,550,050 km (0.113 R)
• M91: 82,677,956 km (0.096 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: 340 - 19,144 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit