🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.12

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.72 AU - 1.18 AU

Year: 404 Days

Day: 43.3 Hours

Environment

Temp: -47 °C

Axial Tilt: 5.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.89

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.88 AU - 1.34 AU

Year: 511 Days

Day: 43.2 Hours

Environment

Temp: -80 °C

Axial Tilt: 14.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 28,039,876 km

• M1: 774,019 km (0.06 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.78 AU - 2.56 AU

Year: 1396 Days

Day: 20 Hours

Environment

Temp: -115 °C

Axial Tilt: 12.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 3.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 409.5

Radius: 13.8

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 3.46 AU - 3.58 AU

Year: 2883 Days

Day: 13.9 Hours

Environment

Temp: -152 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 28,039,876 km

• M1: 172,187 km (0.072 R)
• M2: 285,882 km (0.082 R)
• M3: 454,179 km (0.088 R)
• M4: 611,706 km (0.047 R)
• M5: 765,343 km (0.064 R)
• M6: 933,640 km (0.05 R)
• M7: 1,075,908 km (0.109 R)
• M8: 1,471,145 km (0.112 R)
• M9: 1,779,467 km (0.085 R)
• M10: 2,197,742 km (0.115 R)
• M11: 2,313,830 km (0.087 R)
• M12: 2,525,212 km (0.085 R)
• M13: 3,010,358 km (0.036 R)
• M14: 3,540,084 km (0.092 R)
• M15: 3,893,883 km (0.112 R)
• M16: 3,988,130 km (0.092 R)
• M17: 4,243,194 km (0.067 R)
• M18: 4,487,338 km (0.048 R)
• M19: 4,853,853 km (0.037 R)
• M20: 5,109,366 km (0.069 R)
• M21: 5,369,367 km (0.113 R)
• M22: 5,527,492 km (0.111 R)
• M23: 5,740,669 km (0.055 R)
• M24: 6,047,494 km (0.111 R)
• M25: 6,157,149 km (0.066 R)
• M26: 6,415,505 km (0.062 R)
• M27: 6,771,847 km (0.04 R)
• M28: 7,134,771 km (0.12 R)
• M29: 7,504,128 km (0.053 R)
• M30: 7,780,286 km (0.085 R)
• M31: 8,160,564 km (0.096 R)
• M32: 8,424,155 km (0.086 R)
• M33: 8,649,599 km (0.108 R)
• M34: 8,939,221 km (0.076 R)
• M35: 9,127,265 km (0.118 R)
• M36: 10,391,666 km (0.097 R)
• M37: 10,567,444 km (0.115 R)
• M38: 10,721,979 km (0.048 R)
• M39: 10,855,121 km (0.078 R)
• M40: 11,167,780 km (0.106 R)
• M41: 11,506,021 km (0.099 R)
• M42: 11,756,298 km (0.08 R)
• M43: 12,169,787 km (0.115 R)
• M44: 12,262,238 km (0.099 R)
• M45: 12,869,456 km (0.092 R)
• M46: 13,010,976 km (0.098 R)
• M47: 13,534,419 km (0.119 R)
• M48: 13,774,523 km (0.074 R)
• M49: 13,919,334 km (0.099 R)
• M50: 14,601,799 km (0.116 R)
• M51: 14,749,452 km (0.064 R)
• M52: 15,021,421 km (0.044 R)
• M53: 15,195,404 km (0.063 R)
• M54: 15,620,710 km (0.118 R)
• M55: 15,847,501 km (0.109 R)
• M56: 16,585,617 km (0.089 R)
• M57: 17,334,952 km (0.055 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 772

Radius: 9.3

Gravity: 8.93 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 3.48 AU - 3.68 AU

Year: 2957 Days

Day: 12.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 28,039,876 km

• M1: 121,174 km (0.043 R)
• M2: 278,850 km (0.086 R)
• M3: 347,217 km (0.083 R)
• M4: 541,095 km (0.104 R)
• M5: 770,728 km (0.115 R)
• M6: 864,975 km (0.081 R)
• M7: 1,100,741 km (0.114 R)
• M8: 1,485,806 km (0.114 R)
• M9: 1,783,655 km (0.104 R)
• M10: 1,853,966 km (0.043 R)
• M11: 1,954,197 km (0.081 R)
• M12: 2,041,413 km (0.029 R)
• M13: 2,235,142 km (0.088 R)
• M14: 2,403,888 km (0.091 R)
• M15: 2,608,688 km (0.095 R)
• M16: 2,672,865 km (0.064 R)
• M17: 2,868,689 km (0.056 R)
• M18: 3,274,548 km (0.086 R)
• M19: 3,626,701 km (0.11 R)
• M20: 4,121,272 km (0.106 R)
• M21: 4,715,325 km (0.116 R)
• M22: 4,912,644 km (0.083 R)
• M23: 5,052,518 km (0.04 R)
• M24: 5,645,824 km (0.062 R)
• M25: 6,067,839 km (0.061 R)
• M26: 6,347,587 km (0.112 R)
• M27: 6,500,027 km (0.052 R)
• M28: 7,054,437 km (0.098 R)
• M29: 7,122,055 km (0.094 R)
• M30: 7,212,413 km (0.071 R)
• M31: 7,531,804 km (0.086 R)
• M32: 7,925,994 km (0.095 R)
• M33: 8,043,130 km (0.094 R)
• M34: 8,255,558 km (0.11 R)
• M35: 8,445,997 km (0.061 R)
• M36: 9,099,290 km (0.115 R)
• M37: 9,469,396 km (0.066 R)
• M38: 9,894,702 km (0.04 R)
• M39: 10,686,374 km (0.104 R)
• M40: 10,946,076 km (0.112 R)
• M41: 11,339,519 km (0.079 R)
• M42: 11,551,349 km (0.113 R)
• M43: 11,684,342 km (0.102 R)
• M44: 12,059,533 km (0.07 R)
• M45: 12,194,470 km (0.111 R)
• M46: 12,465,841 km (0.081 R)
• M47: 12,629,651 km (0.116 R)
• M48: 12,711,929 km (0.115 R)
• M49: 13,208,744 km (0.052 R)
• M50: 13,683,717 km (0.109 R)
• M51: 13,768,240 km (0.102 R)
• M52: 13,852,763 km (0.1 R)
• M53: 14,022,556 km (0.075 R)
• M54: 14,192,948 km (0.108 R)
• M55: 14,621,845 km (0.036 R)
• M56: 14,852,525 km (0.094 R)
• M57: 15,113,274 km (0.104 R)
• M58: 15,229,662 km (0.086 R)
• M59: 15,492,804 km (0.065 R)
• M60: 15,580,768 km (0.097 R)
• M61: 17,497,565 km (0.082 R)
• M62: 17,681,122 km (0.055 R)
• M63: 17,834,460 km (0.082 R)
• M64: 17,895,944 km (0.101 R)
• M65: 17,988,396 km (0.084 R)
• M66: 18,173,598 km (0.097 R)
• M67: 18,452,598 km (0.109 R)
• M68: 19,234,995 km (0.083 R)
• M69: 20,477,256 km (0.116 R)
• M70: 20,994,266 km (0.114 R)
• M71: 21,059,191 km (0.089 R)
• M72: 21,221,954 km (0.084 R)
• M73: 21,450,240 km (0.095 R)
• M74: 21,712,336 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 540.2

Radius: 14.2

Gravity: 2.68 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 3.64 AU - 5.98 AU

Year: 4605 Days

Day: 11.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 28,039,876 km

• M1: 185,801 km (0.062 R)
• M2: 386,411 km (0.03 R)
• M3: 533,616 km (0.113 R)
• M4: 672,891 km (0.04 R)
• M5: 932,593 km (0.099 R)
• M6: 1,056,460 km (0.103 R)
• M7: 1,172,997 km (0.107 R)
• M8: 1,506,899 km (0.089 R)
• M9: 1,640,041 km (0.107 R)
• M10: 1,934,749 km (0.038 R)
• M11: 2,031,539 km (0.079 R)
• M12: 2,522,968 km (0.087 R)
• M13: 2,846,698 km (0.071 R)
• M14: 3,108,045 km (0.054 R)
• M15: 3,222,488 km (0.114 R)
• M16: 3,436,113 km (0.116 R)
• M17: 3,554,595 km (0.102 R)
• M18: 3,674,423 km (0.101 R)
• M19: 4,294,656 km (0.091 R)
• M20: 4,508,730 km (0.106 R)
• M21: 4,726,395 km (0.117 R)
• M22: 5,149,608 km (0.099 R)
• M23: 5,748,747 km (0.057 R)
• M24: 6,176,597 km (0.102 R)
• M25: 6,394,561 km (0.077 R)
• M26: 6,664,286 km (0.105 R)
• M27: 7,063,413 km (0.103 R)
• M28: 7,265,969 km (0.076 R)
• M29: 7,676,914 km (0.097 R)
• M30: 7,963,843 km (0.038 R)
• M31: 8,174,776 km (0.053 R)
• M32: 8,548,471 km (0.12 R)
• M33: 8,791,568 km (0.093 R)
• M34: 9,284,941 km (0.09 R)
• M35: 9,787,291 km (0.108 R)
• M36: 9,956,636 km (0.05 R)
• M37: 10,355,763 km (0.078 R)
• M38: 10,673,210 km (0.117 R)
• M39: 11,140,553 km (0.095 R)
• M40: 11,436,009 km (0.081 R)
• M41: 11,644,399 km (0.075 R)
• M42: 12,338,084 km (0.103 R)
• M43: 13,607,871 km (0.108 R)
• M44: 14,210,451 km (0.079 R)
• M45: 14,338,358 km (0.077 R)
• M46: 14,563,203 km (0.056 R)
• M47: 14,951,410 km (0.066 R)
• M48: 15,540,227 km (0.115 R)
• M49: 15,672,172 km (0.099 R)
• M50: 16,270,115 km (0.088 R)
• M51: 16,808,069 km (0.081 R)
• M52: 17,249,532 km (0.09 R)
• M53: 17,866,922 km (0.11 R)
• M54: 18,317,362 km (0.105 R)
• M55: 18,912,163 km (0.065 R)
• M56: 19,017,779 km (0.066 R)
• M57: 19,194,304 km (0.105 R)
• M58: 20,156,668 km (0.097 R)
• M59: 20,336,634 km (0.099 R)
• M60: 20,916,026 km (0.119 R)
• M61: 21,354,198 km (0.077 R)
• M62: 21,574,407 km (0.092 R)
• M63: 21,758,412 km (0.056 R)
• M64: 21,980,116 km (0.032 R)
• M65: 22,836,414 km (0.096 R)
• M66: 22,986,610 km (0.084 R)
• M67: 23,627,936 km (0.114 R)
• M68: 24,275,396 km (0.093 R)
• M69: 25,160,417 km (0.062 R)
• M70: 25,354,296 km (0.056 R)
• M71: 25,626,564 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 185.2

Radius: 9.8

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 4.7 AU - 5.72 AU

Year: 5192 Days

Day: 9.2 Hours

Environment

Temp: -169 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 28,039,876 km

• M1: 144,811 km (0.05 R)
• M2: 215,122 km (0.106 R)
• M3: 305,479 km (0.117 R)
• M4: 436,527 km (0.075 R)
• M5: 538,852 km (0.097 R)
• M6: 606,320 km (0.11 R)
• M7: 723,007 km (0.118 R)
• M8: 828,174 km (0.117 R)
• M9: 928,404 km (0.089 R)
• M10: 1,022,501 km (0.119 R)
• M11: 1,220,569 km (0.062 R)
• M12: 1,419,385 km (0.067 R)
• M13: 1,730,997 km (0.087 R)
• M14: 1,915,002 km (0.082 R)
• M15: 1,995,935 km (0.113 R)
• M16: 2,274,037 km (0.107 R)
• M17: 2,505,465 km (0.081 R)
• M18: 2,744,822 km (0.107 R)
• M19: 3,038,632 km (0.12 R)
• M20: 3,245,526 km (0.116 R)
• M21: 3,310,152 km (0.043 R)
• M22: 3,391,533 km (0.034 R)
• M23: 3,473,663 km (0.113 R)
• M24: 3,673,376 km (0.103 R)
• M25: 4,084,321 km (0.097 R)
• M26: 4,259,949 km (0.106 R)
• M27: 4,728,041 km (0.095 R)
• M28: 4,856,994 km (0.112 R)
• M29: 5,137,041 km (0.091 R)
• M30: 5,212,738 km (0.093 R)
• M31: 5,326,881 km (0.079 R)
• M32: 5,461,070 km (0.106 R)
• M33: 5,576,859 km (0.098 R)
• M34: 5,969,254 km (0.118 R)
• M35: 6,431,661 km (0.112 R)
• M36: 6,656,806 km (0.105 R)
• M37: 6,926,381 km (0.11 R)
• M38: 7,030,950 km (0.107 R)
• M39: 7,713,117 km (0.054 R)
• M40: 7,908,641 km (0.108 R)
• M41: 8,018,147 km (0.092 R)
• M42: 8,798,150 km (0.03 R)
• M43: 9,094,055 km (0.112 R)
• M44: 9,416,288 km (0.048 R)
• M45: 9,625,576 km (0.101 R)
• M46: 10,119,698 km (0.086 R)
• M47: 10,477,685 km (0.091 R)
• M48: 11,280,128 km (0.09 R)
• M49: 12,431,284 km (0.113 R)
• M50: 12,609,754 km (0.083 R)
• M51: 13,124,221 km (0.096 R)
• M52: 13,279,953 km (0.087 R)
• M53: 13,593,211 km (0.11 R)
• M54: 13,750,737 km (0.077 R)
• M55: 13,935,341 km (0.113 R)
• M56: 14,333,720 km (0.098 R)
• M57: 14,762,767 km (0.11 R)
• M58: 14,870,627 km (0.092 R)
• M59: 15,578,524 km (0.044 R)
• M60: 15,660,952 km (0.051 R)
• M61: 16,075,039 km (0.119 R)
• M62: 16,241,691 km (0.084 R)
• M63: 16,353,142 km (0.102 R)
• M64: 17,027,080 km (0.119 R)
• M65: 17,225,297 km (0.1 R)
• M66: 17,310,568 km (0.101 R)
• M67: 17,796,013 km (0.103 R)
• M68: 18,054,817 km (0.059 R)
• M69: 18,257,074 km (0.105 R)
• M70: 18,460,078 km (0.1 R)
• M71: 18,605,487 km (0.069 R)
• M72: 19,220,334 km (0.083 R)
• M73: 19,426,929 km (0.115 R)
• M74: 19,545,111 km (0.103 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 22.8

Radius: 9.7

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 6.7 AU - 7.34 AU

Year: 8120 Days

Day: 6 Hours

Environment

Temp: -192 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 28,039,876 km

• M1: 122,820 km (0.115 R)
• M2: 227,090 km (0.073 R)
• M3: 341,083 km (0.101 R)
• M4: 461,958 km (0.093 R)
• M5: 632,500 km (0.101 R)
• M6: 736,770 km (0.089 R)
• M7: 809,773 km (0.117 R)
• M8: 1,127,818 km (0.1 R)
• M9: 1,283,550 km (0.078 R)
• M10: 1,400,535 km (0.079 R)
• M11: 1,530,536 km (0.108 R)
• M12: 1,873,564 km (0.098 R)
• M13: 2,176,051 km (0.079 R)
• M14: 2,251,448 km (0.12 R)
• M15: 2,618,860 km (0.076 R)
• M16: 3,223,685 km (0.1 R)
• M17: 3,334,836 km (0.112 R)
• M18: 4,095,092 km (0.098 R)
• M19: 4,229,281 km (0.09 R)
• M20: 4,612,551 km (0.104 R)
• M21: 4,907,558 km (0.038 R)
• M22: 5,354,108 km (0.118 R)
• M23: 5,693,845 km (0.074 R)
• M24: 5,949,507 km (0.113 R)
• M25: 6,101,798 km (0.036 R)
• M26: 6,286,103 km (0.063 R)
• M27: 6,929,822 km (0.075 R)
• M28: 7,743,186 km (0.119 R)
• M29: 7,842,818 km (0.114 R)
• M30: 8,026,524 km (0.09 R)
• M31: 8,432,533 km (0.094 R)
• M32: 8,672,488 km (0.112 R)
• M33: 8,776,009 km (0.104 R)
• M34: 8,897,333 km (0.111 R)
• M35: 9,194,136 km (0.092 R)
• M36: 9,264,447 km (0.068 R)
• M37: 9,405,667 km (0.101 R)
• M38: 10,032,033 km (0.108 R)
• M39: 10,359,353 km (0.063 R)
• M40: 11,117,964 km (0.101 R)
• M41: 11,551,499 km (0.088 R)
• M42: 11,798,934 km (0.101 R)
• M43: 12,260,293 km (0.047 R)
• M44: 12,532,262 km (0.056 R)
• M45: 13,280,401 km (0.102 R)
• M46: 13,379,884 km (0.104 R)

Planet 9 - Gas Giant

Semi-Major Axis: 7.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203.6

Radius: 12.2

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 5.56 AU - 8.58 AU

Year: 8207 Days

Day: 12.9 Hours

Environment

Temp: -181 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 28,039,876 km

• M1: 171,738 km (0.095 R)
• M2: 255,364 km (0.102 R)
• M3: 334,351 km (0.043 R)
• M4: 454,179 km (0.054 R)
• M5: 561,590 km (0.092 R)
• M6: 759,209 km (0.119 R)
• M7: 1,020,407 km (0.081 R)
• M8: 1,296,565 km (0.052 R)
• M9: 1,458,878 km (0.083 R)
• M10: 1,535,024 km (0.054 R)
• M11: 1,739,524 km (0.093 R)
• M12: 1,837,062 km (0.12 R)
• M13: 2,443,232 km (0.11 R)
• M14: 3,128,091 km (0.11 R)
• M15: 3,328,702 km (0.082 R)
• M16: 3,977,658 km (0.092 R)
• M17: 4,107,808 km (0.109 R)
• M18: 4,417,176 km (0.072 R)
• M19: 5,058,652 km (0.052 R)
• M20: 5,176,386 km (0.082 R)
• M21: 6,075,469 km (0.063 R)
• M22: 6,453,802 km (0.12 R)
• M23: 6,761,973 km (0.104 R)
• M24: 6,865,794 km (0.12 R)
• M25: 6,970,214 km (0.117 R)
• M26: 7,796,891 km (0.09 R)
• M27: 7,878,572 km (0.088 R)
• M28: 8,042,830 km (0.037 R)
• M29: 8,318,988 km (0.12 R)
• M30: 9,051,868 km (0.047 R)
• M31: 9,166,460 km (0.111 R)
• M32: 9,252,628 km (0.091 R)
• M33: 9,746,600 km (0.104 R)
• M34: 9,834,714 km (0.11 R)
• M35: 9,923,126 km (0.093 R)
• M36: 10,159,939 km (0.103 R)
• M37: 10,428,617 km (0.077 R)
• M38: 11,064,857 km (0.056 R)
• M39: 11,310,646 km (0.12 R)
• M40: 11,964,090 km (0.038 R)
• M41: 12,090,051 km (0.119 R)
• M42: 12,184,747 km (0.111 R)
• M43: 13,470,989 km (0.074 R)
• M44: 13,569,275 km (0.065 R)
• M45: 13,700,622 km (0.09 R)
• M46: 13,832,268 km (0.119 R)
• M47: 14,397,000 km (0.103 R)
• M48: 14,531,040 km (0.115 R)
• M49: 14,665,378 km (0.087 R)
• M50: 14,766,357 km (0.087 R)
• M51: 15,275,289 km (0.103 R)
• M52: 15,617,569 km (0.055 R)
• M53: 16,205,489 km (0.062 R)
• M54: 16,977,114 km (0.044 R)
• M55: 17,760,858 km (0.079 R)
• M56: 18,193,195 km (0.104 R)
• M57: 19,141,945 km (0.047 R)
• M58: 19,400,151 km (0.099 R)
• M59: 19,696,654 km (0.114 R)
• M60: 20,256,748 km (0.074 R)
• M61: 20,482,192 km (0.075 R)
• M62: 20,670,686 km (0.054 R)
• M63: 21,049,468 km (0.045 R)
• M64: 21,392,496 km (0.041 R)
• M65: 22,045,191 km (0.079 R)
• M66: 22,315,814 km (0.087 R)
• M67: 22,977,784 km (0.11 R)
• M68: 23,134,563 km (0.076 R)
• M69: 23,252,296 km (0.041 R)
• M70: 24,801,233 km (0.116 R)
• M71: 25,203,800 km (0.113 R)
• M72: 25,527,381 km (0.066 R)
• M73: 25,649,153 km (0.056 R)
• M74: 25,771,076 km (0.087 R)
• M75: 25,974,678 km (0.032 R)
• M76: 26,097,049 km (0.078 R)
• M77: 27,166,076 km (0.116 R)
• M78: 27,997,989 km (0.098 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 533 - 18,589 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit