🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.48 AU - 0.68 AU

Year: 164 Days

Day: 43.9 Hours

Environment

Temp: 142 °C

Axial Tilt: 38.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.1

Radius: 1.04

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.62 AU - 1.74 AU

Year: 808 Days

Day: 36.9 Hours

Environment

Temp: -57 °C

Axial Tilt: 39.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 47,590,152 km

• M1: 381,026 km (0.106 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.63

Radius: 1.47

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 1.78 AU - 2.28 AU

Year: 1073 Days

Day: 18.7 Hours

Environment

Temp: -69 °C

Axial Tilt: 0.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.33

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 2.38 AU - 2.74 AU

Year: 1519 Days

Day: 21.8 Hours

Environment

Temp: -91 °C

Axial Tilt: 122.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 47,590,152 km

• M1: 256,560 km (0.104 R)
• M2: 927,656 km (0.104 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.43

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 2.69 AU - 3.27 AU

Year: 1908 Days

Day: 46.7 Hours

Environment

Temp: -96 °C

Axial Tilt: 24.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 47,590,152 km

• M1: 726,298 km (0.056 R)

Asteroid Belt

Center: 3.83 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 4.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 549.1

Radius: 8.6

Gravity: 7.42 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 4.08 AU - 5.28 AU

Year: 3755 Days

Day: 12.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 47,590,152 km

• M1: 123,418 km (0.074 R)
• M2: 232,924 km (0.094 R)
• M3: 305,479 km (0.06 R)
• M4: 372,648 km (0.089 R)
• M5: 437,574 km (0.094 R)
• M6: 552,615 km (0.025 R)
• M7: 740,210 km (0.037 R)
• M8: 814,560 km (0.107 R)
• M9: 983,157 km (0.102 R)
• M10: 1,251,087 km (0.117 R)
• M11: 1,473,988 km (0.11 R)
• M12: 1,611,019 km (0.031 R)
• M13: 1,723,816 km (0.064 R)
• M14: 1,824,645 km (0.104 R)
• M15: 1,957,339 km (0.113 R)
• M16: 2,358,560 km (0.089 R)
• M17: 2,734,799 km (0.085 R)
• M18: 2,887,239 km (0.054 R)
• M19: 3,506,275 km (0.089 R)
• M20: 3,579,727 km (0.094 R)
• M21: 3,727,979 km (0.093 R)
• M22: 3,878,325 km (0.087 R)
• M23: 3,973,319 km (0.105 R)
• M24: 4,030,765 km (0.114 R)
• M25: 4,088,360 km (0.108 R)
• M26: 4,361,077 km (0.033 R)
• M27: 4,639,778 km (0.072 R)
• M28: 5,214,533 km (0.078 R)
• M29: 5,361,737 km (0.056 R)
• M30: 5,425,316 km (0.052 R)
• M31: 5,553,073 km (0.107 R)
• M32: 5,660,335 km (0.109 R)
• M33: 5,811,728 km (0.076 R)
• M34: 5,986,308 km (0.112 R)
• M35: 6,140,544 km (0.05 R)
• M36: 6,565,851 km (0.079 R)
• M37: 6,702,134 km (0.099 R)
• M38: 6,770,650 km (0.116 R)
• M39: 6,931,468 km (0.101 R)
• M40: 7,658,513 km (0.063 R)
• M41: 8,906,758 km (0.11 R)
• M42: 9,032,570 km (0.106 R)
• M43: 9,387,865 km (0.095 R)
• M44: 10,375,211 km (0.12 R)
• M45: 10,640,448 km (0.065 R)
• M46: 10,854,373 km (0.081 R)
• M47: 10,908,078 km (0.101 R)
• M48: 11,015,789 km (0.055 R)
• M49: 11,531,901 km (0.098 R)
• M50: 11,669,083 km (0.063 R)
• M51: 11,806,713 km (0.074 R)
• M52: 12,083,768 km (0.111 R)
• M53: 12,814,105 km (0.089 R)
• M54: 12,899,226 km (0.087 R)
• M55: 13,013,220 km (0.113 R)
• M56: 13,443,164 km (0.12 R)
• M57: 13,674,442 km (0.086 R)
• M58: 14,435,147 km (0.11 R)
• M59: 14,701,581 km (0.104 R)
• M60: 14,790,891 km (0.095 R)
• M61: 15,209,466 km (0.062 R)
• M62: 15,510,906 km (0.036 R)
• M63: 15,632,080 km (0.079 R)
• M64: 15,814,440 km (0.099 R)
• M65: 16,242,439 km (0.033 R)
• M66: 16,643,362 km (0.053 R)
• M67: 17,141,373 km (0.117 R)
• M68: 17,235,320 km (0.105 R)
• M69: 17,549,476 km (0.075 R)
• M70: 17,770,581 km (0.105 R)
• M71: 18,151,906 km (0.088 R)
• M72: 18,343,541 km (0.115 R)
• M73: 19,703,685 km (0.099 R)
• M74: 20,296,392 km (0.084 R)
• M75: 20,694,921 km (0.089 R)
• M76: 21,465,798 km (0.112 R)
• M77: 21,668,504 km (0.049 R)
• M78: 21,905,766 km (0.074 R)
• M79: 22,932,306 km (0.039 R)
• M80: 23,139,499 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 21.6

Radius: 10

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 5.23 AU - 7.81 AU

Year: 6174 Days

Day: 12.1 Hours

Environment

Temp: -157 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 47,590,152 km

• M1: 128,205 km (0.084 R)
• M2: 207,941 km (0.093 R)
• M3: 308,471 km (0.105 R)
• M4: 627,264 km (0.051 R)
• M5: 705,204 km (0.112 R)
• M6: 806,183 km (0.06 R)
• M7: 912,248 km (0.06 R)
• M8: 1,124,527 km (0.109 R)
• M9: 1,416,692 km (0.094 R)
• M10: 1,514,080 km (0.091 R)
• M11: 1,588,580 km (0.086 R)
• M12: 1,732,792 km (0.059 R)
• M13: 2,314,578 km (0.081 R)
• M14: 2,597,318 km (0.12 R)
• M15: 2,880,956 km (0.091 R)
• M16: 3,249,565 km (0.079 R)
• M17: 3,522,282 km (0.12 R)
• M18: 3,893,584 km (0.07 R)
• M19: 4,372,447 km (0.056 R)
• M20: 4,552,263 km (0.075 R)
• M21: 4,697,972 km (0.114 R)
• M22: 4,969,192 km (0.098 R)
• M23: 5,931,855 km (0.058 R)
• M24: 6,441,236 km (0.116 R)
• M25: 6,509,452 km (0.115 R)
• M26: 7,217,648 km (0.106 R)
• M27: 7,387,891 km (0.111 R)
• M28: 7,502,184 km (0.074 R)
• M29: 7,790,309 km (0.114 R)
• M30: 8,126,306 km (0.063 R)
• M31: 8,437,170 km (0.111 R)
• M32: 8,797,252 km (0.091 R)
• M33: 9,393,101 km (0.045 R)
• M34: 9,625,875 km (0.041 R)
• M35: 9,719,374 km (0.114 R)
• M36: 9,844,737 km (0.096 R)
• M37: 10,049,387 km (0.116 R)
• M38: 10,223,818 km (0.077 R)
• M39: 10,351,275 km (0.103 R)
• M40: 10,527,352 km (0.083 R)
• M41: 10,801,415 km (0.082 R)
• M42: 10,980,035 km (0.106 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 706

Radius: 9.7

Gravity: 7.5 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 6.3 AU - 7.52 AU

Year: 6736 Days

Day: 14.1 Hours

Environment

Temp: -156 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 47,590,152 km

• M1: 142,417 km (0.102 R)
• M2: 241,601 km (0.071 R)
• M3: 373,995 km (0.034 R)
• M4: 462,856 km (0.063 R)
• M5: 535,261 km (0.086 R)
• M6: 625,319 km (0.102 R)
• M7: 807,529 km (0.082 R)
• M8: 1,311,076 km (0.059 R)
• M9: 1,382,434 km (0.098 R)
• M10: 1,623,885 km (0.054 R)
• M11: 1,759,570 km (0.118 R)
• M12: 2,583,705 km (0.087 R)
• M13: 2,697,250 km (0.116 R)
• M14: 3,119,564 km (0.072 R)
• M15: 3,664,101 km (0.115 R)
• M16: 3,843,618 km (0.085 R)
• M17: 4,535,658 km (0.119 R)
• M18: 5,122,680 km (0.12 R)
• M19: 5,439,678 km (0.06 R)
• M20: 5,556,514 km (0.113 R)
• M21: 6,153,559 km (0.042 R)
• M22: 6,552,686 km (0.102 R)
• M23: 7,119,063 km (0.111 R)
• M24: 7,375,923 km (0.076 R)
• M25: 7,701,149 km (0.107 R)
• M26: 7,832,645 km (0.063 R)
• M27: 7,931,829 km (0.069 R)
• M28: 8,467,239 km (0.113 R)
• M29: 9,049,026 km (0.105 R)
• M30: 9,714,587 km (0.087 R)
• M31: 9,785,496 km (0.051 R)
• M32: 10,287,247 km (0.078 R)
• M33: 11,055,582 km (0.054 R)
• M34: 11,390,382 km (0.045 R)
• M35: 12,802,137 km (0.064 R)
• M36: 13,232,530 km (0.111 R)
• M37: 13,429,700 km (0.05 R)
• M38: 14,027,044 km (0.057 R)
• M39: 14,389,520 km (0.078 R)
• M40: 14,673,756 km (0.076 R)
• M41: 14,836,967 km (0.064 R)
• M42: 14,918,797 km (0.104 R)
• M43: 15,165,185 km (0.079 R)
• M44: 15,330,191 km (0.096 R)
• M45: 15,912,426 km (0.104 R)
• M46: 16,248,423 km (0.094 R)
• M47: 16,586,814 km (0.087 R)
• M48: 16,714,271 km (0.12 R)
• M49: 17,876,198 km (0.112 R)
• M50: 18,137,994 km (0.055 R)
• M51: 18,842,151 km (0.114 R)
• M52: 19,108,585 km (0.113 R)
• M53: 19,510,554 km (0.09 R)
• M54: 20,277,393 km (0.089 R)
• M55: 20,550,409 km (0.091 R)
• M56: 20,733,068 km (0.084 R)
• M57: 23,061,709 km (0.115 R)
• M58: 23,251,548 km (0.092 R)
• M59: 24,353,337 km (0.07 R)
• M60: 24,886,204 km (0.116 R)
• M61: 25,080,981 km (0.118 R)
• M62: 25,520,948 km (0.104 R)
• M63: 25,963,608 km (0.103 R)
• M64: 26,607,328 km (0.073 R)
• M65: 27,156,202 km (0.117 R)
• M66: 27,507,458 km (0.088 R)
• M67: 27,809,646 km (0.119 R)
• M68: 28,214,458 km (0.109 R)
• M69: 28,672,077 km (0.066 R)
• M70: 29,132,091 km (0.12 R)
• M71: 29,852,704 km (0.085 R)
• M72: 30,267,090 km (0.077 R)
• M73: 30,370,911 km (0.099 R)
• M74: 30,787,691 km (0.08 R)
• M75: 30,892,259 km (0.102 R)
• M76: 31,311,283 km (0.113 R)
• M77: 31,785,060 km (0.086 R)
• M78: 33,488,830 km (0.062 R)
• M79: 33,596,241 km (0.082 R)
• M80: 33,757,657 km (0.086 R)
• M81: 35,003,807 km (0.12 R)
• M82: 35,440,783 km (0.092 R)
• M83: 35,659,944 km (0.063 R)
• M84: 35,934,456 km (0.057 R)
• M85: 36,430,522 km (0.106 R)
• M86: 36,540,925 km (0.097 R)
• M87: 36,651,628 km (0.117 R)
• M88: 36,817,831 km (0.039 R)

Planet 9 - Gas Giant

Semi-Major Axis: 8.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 959.1

Radius: 8.1

Gravity: 14.62 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 6.64 AU - 9.56 AU

Year: 8549 Days

Day: 9.8 Hours

Environment

Temp: -176 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 47,590,152 km

• M1: 135,236 km (0.084 R)
• M2: 207,642 km (0.077 R)
• M3: 291,267 km (0.077 R)
• M4: 376,687 km (0.078 R)
• M5: 515,664 km (0.114 R)
• M6: 591,959 km (0.049 R)
• M7: 655,837 km (0.065 R)
• M8: 791,522 km (0.112 R)
• M9: 1,171,052 km (0.052 R)
• M10: 1,253,331 km (0.038 R)
• M11: 1,380,639 km (0.034 R)
• M12: 1,931,757 km (0.115 R)
• M13: 2,518,331 km (0.076 R)
• M14: 2,598,814 km (0.081 R)
• M15: 2,734,799 km (0.077 R)
• M16: 3,214,709 km (0.075 R)
• M17: 3,419,957 km (0.093 R)
• M18: 3,690,280 km (0.041 R)
• M19: 4,155,978 km (0.078 R)
• M20: 4,509,478 km (0.09 R)
• M21: 4,640,376 km (0.114 R)
• M22: 5,591,968 km (0.093 R)
• M23: 5,982,120 km (0.099 R)
• M24: 6,126,033 km (0.103 R)
• M25: 7,204,334 km (0.094 R)
• M26: 7,512,057 km (0.071 R)
• M27: 7,863,313 km (0.094 R)
• M28: 8,501,198 km (0.099 R)
• M29: 8,785,434 km (0.105 R)
• M30: 9,868,672 km (0.106 R)
• M31: 9,953,644 km (0.079 R)
• M32: 10,081,700 km (0.109 R)
• M33: 10,599,458 km (0.069 R)
• M34: 10,817,721 km (0.102 R)
• M35: 13,127,512 km (0.044 R)
• M36: 13,597,698 km (0.059 R)
• M37: 13,882,533 km (0.115 R)
• M38: 14,361,695 km (0.11 R)
• M39: 14,458,036 km (0.107 R)
• M40: 14,554,826 km (0.066 R)
• M41: 14,651,615 km (0.082 R)
• M42: 15,385,243 km (0.076 R)
• M43: 15,533,345 km (0.077 R)
• M44: 15,930,827 km (0.054 R)
• M45: 16,180,954 km (0.103 R)
• M46: 16,331,600 km (0.114 R)
• M47: 17,347,967 km (0.078 R)
• M48: 17,656,887 km (0.096 R)
• M49: 18,699,584 km (0.101 R)
• M50: 19,122,348 km (0.035 R)
• M51: 19,655,066 km (0.091 R)
• M52: 19,977,150 km (0.088 R)
• M53: 20,789,766 km (0.075 R)
• M54: 21,558,100 km (0.091 R)
• M55: 22,056,860 km (0.114 R)
• M56: 22,279,760 km (0.089 R)
• M57: 22,391,510 km (0.11 R)
• M58: 22,727,806 km (0.118 R)
• M59: 23,348,787 km (0.111 R)
• M60: 25,887,762 km (0.045 R)
• M61: 26,240,663 km (0.043 R)
• M62: 26,892,012 km (0.084 R)
• M63: 27,428,770 km (0.105 R)
• M64: 27,908,829 km (0.078 R)
• M65: 28,512,905 km (0.062 R)
• M66: 28,999,398 km (0.055 R)
• M67: 30,972,145 km (0.107 R)
• M68: 32,797,089 km (0.063 R)
• M69: 32,924,098 km (0.116 R)
• M70: 33,115,134 km (0.071 R)
• M71: 33,370,498 km (0.115 R)
• M72: 33,690,488 km (0.111 R)
• M73: 33,882,871 km (0.107 R)
• M74: 34,527,189 km (0.119 R)
• M75: 35,762,418 km (0.095 R)
• M76: 35,893,316 km (0.115 R)
• M77: 37,012,159 km (0.12 R)
• M78: 37,542,633 km (0.079 R)
• M79: 39,081,696 km (0.093 R)
• M80: 39,825,048 km (0.1 R)
• M81: 43,611,070 km (0.057 R)
• M82: 44,311,787 km (0.111 R)
• M83: 45,016,094 km (0.074 R)
• M84: 46,222,002 km (0.059 R)
• M85: 46,507,285 km (0.119 R)
• M86: 46,721,659 km (0.114 R)
• M87: 46,936,332 km (0.076 R)
• M88: 48,231,251 km (0.09 R)

Planet 10 - Gas Giant

Semi-Major Axis: 10.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.5

Radius: 10.3

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 9.23 AU - 11.41 AU

Year: 12295 Days

Day: 14.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 47,590,152 km

• M1: 162,014 km (0.067 R)
• M2: 272,567 km (0.04 R)
• M3: 350,508 km (0.032 R)
• M4: 566,078 km (0.076 R)
• M5: 658,679 km (0.107 R)
• M6: 791,074 km (0.068 R)
• M7: 1,222,215 km (0.087 R)
• M8: 1,346,082 km (0.084 R)
• M9: 1,474,137 km (0.082 R)
• M10: 1,789,340 km (0.105 R)
• M11: 1,954,945 km (0.11 R)
• M12: 2,101,102 km (0.075 R)
• M13: 2,175,452 km (0.113 R)
• M14: 2,641,001 km (0.106 R)
• M15: 2,830,392 km (0.111 R)
• M16: 3,396,320 km (0.108 R)
• M17: 5,025,591 km (0.05 R)
• M18: 5,159,780 km (0.067 R)
• M19: 5,295,166 km (0.109 R)
• M20: 5,673,649 km (0.064 R)
• M21: 5,813,373 km (0.117 R)
• M22: 5,883,834 km (0.068 R)
• M23: 5,989,749 km (0.119 R)
• M24: 6,311,833 km (0.114 R)
• M25: 6,823,907 km (0.072 R)
• M26: 7,349,295 km (0.11 R)
• M27: 7,926,892 km (0.081 R)
• M28: 8,240,898 km (0.099 R)
• M29: 8,479,207 km (0.098 R)
• M30: 9,289,579 km (0.071 R)
• M31: 9,662,377 km (0.077 R)
• M32: 10,040,111 km (0.111 R)
• M33: 10,167,120 km (0.098 R)
• M34: 10,252,092 km (0.076 R)
• M35: 11,865,954 km (0.079 R)
• M36: 12,225,288 km (0.092 R)
• M37: 12,315,645 km (0.101 R)
• M38: 12,497,107 km (0.063 R)
• M39: 13,185,556 km (0.091 R)
• M40: 13,371,207 km (0.066 R)
• M41: 13,698,079 km (0.062 R)
• M42: 14,694,849 km (0.074 R)
• M43: 15,665,739 km (0.099 R)
• M44: 16,908,449 km (0.071 R)
• M45: 17,009,278 km (0.078 R)
• M46: 17,211,385 km (0.101 R)
• M47: 17,976,578 km (0.077 R)
• M48: 18,857,260 km (0.115 R)
• M49: 19,171,566 km (0.102 R)
• M50: 20,071,098 km (0.107 R)
• M51: 21,038,547 km (0.068 R)
• M52: 21,147,005 km (0.107 R)
• M53: 21,418,974 km (0.077 R)
• M54: 21,801,646 km (0.072 R)
• M55: 22,186,411 km (0.053 R)
• M56: 23,410,720 km (0.095 R)
• M57: 24,031,103 km (0.059 R)
• M58: 24,144,498 km (0.062 R)
• M59: 24,371,737 km (0.074 R)
• M60: 24,885,755 km (0.102 R)
• M61: 25,634,493 km (0.102 R)
• M62: 27,095,166 km (0.056 R)
• M63: 27,331,232 km (0.1 R)
• M64: 30,955,539 km (0.103 R)
• M65: 31,388,176 km (0.086 R)
• M66: 31,574,276 km (0.109 R)
• M67: 32,949,529 km (0.104 R)
• M68: 33,201,602 km (0.107 R)
• M69: 33,644,412 km (0.093 R)
• M70: 33,834,850 km (0.08 R)
• M71: 34,920,332 km (0.1 R)
• M72: 35,564,201 km (0.077 R)
• M73: 37,256,602 km (0.114 R)
• M74: 38,443,661 km (0.106 R)
• M75: 39,108,474 km (0.113 R)
• M76: 40,180,043 km (0.057 R)
• M77: 42,557,602 km (0.08 R)
• M78: 44,492,352 km (0.082 R)
• M79: 44,840,915 km (0.067 R)
• M80: 44,980,489 km (0.111 R)
• M81: 45,400,411 km (0.099 R)
• M82: 46,173,383 km (0.05 R)
• M83: 46,879,934 km (0.048 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: 406 - 17,941 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit