🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.4

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.84 AU - 1.28 AU

Year: 416 Days

Day: 45.5 Hours

Environment

Temp: -5 °C

Axial Tilt: 9.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 1.14 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.12

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.08 AU - 1.2 AU

Year: 464 Days

Day: 46.5 Hours

Environment

Temp: -9 °C

Axial Tilt: 24.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Asteroid Belt

Center: 3.4 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 385.1

Radius: 9.2

Gravity: 4.55 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 4.41 AU - 6.91 AU

Year: 5128 Days

Day: 13.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 69,951,501 km

• M1: 143,464 km (0.111 R)
• M2: 208,240 km (0.071 R)
• M3: 522,845 km (0.092 R)
• M4: 717,771 km (0.057 R)
• M5: 1,283,400 km (0.119 R)
• M6: 1,464,414 km (0.114 R)
• M7: 1,536,370 km (0.105 R)
• M8: 1,820,756 km (0.07 R)
• M9: 2,154,658 km (0.066 R)
• M10: 2,286,903 km (0.117 R)
• M11: 2,473,302 km (0.115 R)
• M12: 2,577,123 km (0.092 R)
• M13: 2,897,412 km (0.067 R)
• M14: 2,988,517 km (0.03 R)
• M15: 3,099,369 km (0.11 R)
• M16: 3,382,258 km (0.039 R)
• M17: 3,575,688 km (0.095 R)
• M18: 3,732,916 km (0.08 R)
• M19: 4,343,275 km (0.082 R)
• M20: 4,532,367 km (0.077 R)
• M21: 4,962,610 km (0.102 R)
• M22: 5,271,530 km (0.088 R)
• M23: 5,677,987 km (0.093 R)
• M24: 5,792,579 km (0.056 R)
• M25: 6,141,441 km (0.066 R)
• M26: 6,235,538 km (0.092 R)
• M27: 6,544,907 km (0.091 R)
• M28: 7,203,586 km (0.094 R)
• M29: 7,578,628 km (0.095 R)
• M30: 7,806,765 km (0.113 R)
• M31: 8,166,099 km (0.097 R)
• M32: 8,243,740 km (0.108 R)
• M33: 8,399,920 km (0.085 R)
• M34: 8,504,639 km (0.058 R)
• M35: 9,195,482 km (0.109 R)
• M36: 9,656,991 km (0.074 R)
• M37: 10,098,155 km (0.11 R)
• M38: 10,321,206 km (0.049 R)
• M39: 10,546,051 km (0.05 R)
• M40: 10,715,546 km (0.112 R)
• M41: 11,086,249 km (0.072 R)
• M42: 11,143,545 km (0.12 R)
• M43: 11,840,073 km (0.069 R)
• M44: 11,986,978 km (0.087 R)
• M45: 12,282,584 km (0.101 R)
• M46: 12,371,594 km (0.104 R)
• M47: 12,431,134 km (0.098 R)
• M48: 12,490,824 km (0.097 R)
• M49: 12,640,422 km (0.114 R)
• M50: 13,305,384 km (0.055 R)
• M51: 13,427,606 km (0.116 R)
• M52: 13,488,791 km (0.101 R)
• M53: 13,642,129 km (0.045 R)
• M54: 13,734,581 km (0.077 R)
• M55: 14,922,088 km (0.096 R)
• M56: 15,048,947 km (0.08 R)
• M57: 16,240,046 km (0.101 R)
• M58: 16,305,270 km (0.058 R)
• M59: 16,567,067 km (0.048 R)
• M60: 16,731,475 km (0.063 R)
• M61: 16,995,515 km (0.11 R)
• M62: 18,370,768 km (0.118 R)
• M63: 18,472,794 km (0.066 R)
• M64: 18,814,176 km (0.108 R)
• M65: 19,088,838 km (0.111 R)
• M66: 19,226,618 km (0.11 R)
• M67: 19,607,344 km (0.066 R)
• M68: 19,746,470 km (0.098 R)
• M69: 19,955,758 km (0.119 R)
• M70: 20,165,643 km (0.098 R)
• M71: 20,729,179 km (0.081 R)
• M72: 21,262,046 km (0.072 R)
• M73: 21,404,912 km (0.069 R)
• M74: 21,548,227 km (0.117 R)
• M75: 21,943,614 km (0.084 R)
• M76: 22,232,787 km (0.117 R)
• M77: 22,741,868 km (0.085 R)
• M78: 23,071,133 km (0.108 R)
• M79: 24,142,703 km (0.11 R)
• M80: 24,928,840 km (0.073 R)
• M81: 25,230,578 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 588.7

Radius: 9.9

Gravity: 6.01 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 5.18 AU - 7.34 AU

Year: 5964 Days

Day: 12.6 Hours

Environment

Temp: -150 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (85)

Outer Limit: 69,951,501 km

• M1: 170,841 km (0.044 R)
• M2: 307,274 km (0.116 R)
• M3: 400,025 km (0.07 R)
• M4: 584,180 km (0.037 R)
• M5: 680,970 km (0.114 R)
• M6: 744,549 km (0.104 R)
• M7: 906,264 km (0.058 R)
• M8: 1,280,707 km (0.1 R)
• M9: 1,493,884 km (0.083 R)
• M10: 1,665,772 km (0.076 R)
• M11: 2,162,587 km (0.065 R)
• M12: 2,338,215 km (0.104 R)
• M13: 2,498,284 km (0.092 R)
• M14: 2,829,345 km (0.067 R)
• M15: 2,935,709 km (0.1 R)
• M16: 3,130,635 km (0.057 R)
• M17: 3,218,748 km (0.082 R)
• M18: 3,625,056 km (0.117 R)
• M19: 3,834,493 km (0.11 R)
• M20: 4,047,969 km (0.095 R)
• M21: 4,144,011 km (0.07 R)
• M22: 4,461,756 km (0.103 R)
• M23: 4,838,145 km (0.029 R)
• M24: 5,224,855 km (0.1 R)
• M25: 6,332,328 km (0.079 R)
• M26: 6,783,815 km (0.097 R)
• M27: 7,187,430 km (0.085 R)
• M28: 7,333,437 km (0.106 R)
• M29: 7,480,492 km (0.091 R)
• M30: 7,837,432 km (0.082 R)
• M31: 7,987,778 km (0.086 R)
• M32: 8,413,983 km (0.114 R)
• M33: 8,567,919 km (0.047 R)
• M34: 8,754,019 km (0.103 R)
• M35: 8,972,731 km (0.114 R)
• M36: 9,193,388 km (0.115 R)
• M37: 10,323,001 km (0.076 R)
• M38: 10,454,797 km (0.081 R)
• M39: 10,521,069 km (0.089 R)
• M40: 10,620,551 km (0.109 R)
• M41: 11,325,756 km (0.045 R)
• M42: 11,495,998 km (0.103 R)
• M43: 11,804,469 km (0.07 R)
• M44: 12,499,650 km (0.087 R)
• M45: 13,172,392 km (0.113 R)
• M46: 13,351,311 km (0.09 R)
• M47: 13,459,171 km (0.079 R)
• M48: 13,567,180 km (0.087 R)
• M49: 13,929,656 km (0.076 R)
• M50: 15,222,930 km (0.067 R)
• M51: 15,335,427 km (0.09 R)
• M52: 15,448,374 km (0.099 R)
• M53: 15,864,854 km (0.119 R)
• M54: 16,093,440 km (0.114 R)
• M55: 16,323,222 km (0.088 R)
• M56: 16,515,605 km (0.097 R)
• M57: 16,592,797 km (0.108 R)
• M58: 16,747,332 km (0.119 R)
• M59: 17,019,151 km (0.081 R)
• M60: 17,136,137 km (0.116 R)
• M61: 17,567,128 km (0.101 R)
• M62: 18,120,940 km (0.105 R)
• M63: 18,200,526 km (0.095 R)
• M64: 19,570,992 km (0.12 R)
• M65: 20,144,999 km (0.1 R)
• M66: 20,724,541 km (0.094 R)
• M67: 21,519,803 km (0.106 R)
• M68: 21,857,595 km (0.073 R)
• M69: 22,154,697 km (0.109 R)
• M70: 22,624,135 km (0.083 R)
• M71: 23,097,014 km (0.068 R)
• M72: 23,442,884 km (0.07 R)
• M73: 25,153,685 km (0.104 R)
• M74: 25,331,407 km (0.12 R)
• M75: 25,956,727 km (0.114 R)
• M76: 26,046,485 km (0.112 R)
• M77: 26,632,311 km (0.118 R)
• M78: 28,000,981 km (0.094 R)
• M79: 28,323,664 km (0.112 R)
• M80: 29,298,893 km (0.101 R)
• M81: 29,673,486 km (0.118 R)
• M82: 29,814,257 km (0.098 R)
• M83: 30,569,128 km (0.06 R)
• M84: 30,758,818 km (0.025 R)
• M85: 31,905,187 km (0.037 R)

Planet 5 - Gas Giant

Semi-Major Axis: 8.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 620.5

Radius: 9.8

Gravity: 6.46 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 7.5 AU - 9.7 AU

Year: 9604 Days

Day: 9.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 69,951,501 km

• M1: 123,269 km (0.037 R)
• M2: 509,381 km (0.109 R)
• M3: 595,400 km (0.03 R)
• M4: 671,246 km (0.041 R)
• M5: 800,199 km (0.089 R)
• M6: 1,009,935 km (0.105 R)
• M7: 1,378,245 km (0.102 R)
• M8: 1,461,122 km (0.053 R)
• M9: 1,524,402 km (0.093 R)
• M10: 1,854,864 km (0.098 R)
• M11: 2,711,461 km (0.104 R)
• M12: 2,922,694 km (0.106 R)
• M13: 3,166,987 km (0.107 R)
• M14: 3,617,725 km (0.088 R)
• M15: 3,821,328 km (0.094 R)
• M16: 4,270,271 km (0.088 R)
• M17: 4,392,941 km (0.11 R)
• M18: 4,895,142 km (0.089 R)
• M19: 5,023,496 km (0.108 R)
• M20: 5,316,559 km (0.088 R)
• M21: 5,615,306 km (0.102 R)
• M22: 6,056,470 km (0.104 R)
• M23: 6,438,543 km (0.12 R)
• M24: 7,116,820 km (0.089 R)
• M25: 7,226,026 km (0.048 R)
• M26: 7,519,986 km (0.071 R)
• M27: 7,743,036 km (0.083 R)
• M28: 7,817,835 km (0.068 R)
• M29: 8,386,905 km (0.092 R)
• M30: 8,851,706 km (0.117 R)
• M31: 9,564,689 km (0.066 R)
• M32: 10,461,080 km (0.096 R)
• M33: 10,585,396 km (0.103 R)
• M34: 11,384,099 km (0.094 R)
• M35: 11,726,229 km (0.104 R)
• M36: 11,898,566 km (0.118 R)
• M37: 12,202,250 km (0.069 R)
• M38: 12,552,309 km (0.113 R)
• M39: 13,667,860 km (0.105 R)
• M40: 14,444,422 km (0.099 R)
• M41: 14,954,402 km (0.116 R)
• M42: 15,094,575 km (0.067 R)
• M43: 15,423,391 km (0.113 R)
• M44: 16,087,905 km (0.116 R)
• M45: 16,279,390 km (0.092 R)
• M46: 16,375,581 km (0.088 R)
• M47: 16,810,163 km (0.104 R)
• M48: 17,297,703 km (0.099 R)
• M49: 18,637,052 km (0.082 R)
• M50: 20,009,463 km (0.101 R)
• M51: 20,163,848 km (0.096 R)
• M52: 20,785,876 km (0.031 R)
• M53: 20,890,146 km (0.104 R)
• M54: 21,466,846 km (0.099 R)
• M55: 22,101,889 km (0.102 R)
• M56: 23,716,349 km (0.045 R)
• M57: 24,372,635 km (0.114 R)
• M58: 24,592,843 km (0.115 R)
• M59: 24,868,851 km (0.093 R)
• M60: 25,035,054 km (0.101 R)
• M61: 25,257,207 km (0.096 R)
• M62: 25,703,308 km (0.119 R)
• M63: 25,815,357 km (0.081 R)
• M64: 25,927,405 km (0.111 R)
• M65: 26,830,229 km (0.103 R)
• M66: 28,145,942 km (0.099 R)
• M67: 28,319,027 km (0.12 R)
• M68: 29,073,598 km (0.048 R)
• M69: 31,496,037 km (0.105 R)
• M70: 32,458,998 km (0.116 R)
• M71: 32,580,023 km (0.076 R)
• M72: 33,126,504 km (0.093 R)
• M73: 33,921,317 km (0.103 R)
• M74: 35,405,029 km (0.068 R)
• M75: 36,029,450 km (0.116 R)
• M76: 36,846,704 km (0.086 R)
• M77: 36,973,114 km (0.114 R)
• M78: 38,052,163 km (0.078 R)
• M79: 38,756,021 km (0.115 R)
• M80: 38,820,199 km (0.055 R)
• M81: 39,270,488 km (0.072 R)
• M82: 39,916,901 km (0.069 R)
• M83: 40,371,379 km (0.1 R)
• M84: 40,501,679 km (0.065 R)
• M85: 41,220,197 km (0.105 R)
• M86: 42,074,700 km (0.096 R)
• M87: 42,736,073 km (0.106 R)
• M88: 43,601,047 km (0.103 R)
• M89: 44,270,199 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 10.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138.3

Radius: 12.9

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 10.01 AU - 10.05 AU

Year: 12096 Days

Day: 13.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 69,951,501 km

• M1: 175,179 km (0.079 R)
• M2: 342,280 km (0.094 R)
• M3: 484,099 km (0.12 R)
• M4: 774,019 km (0.103 R)
• M5: 1,241,064 km (0.072 R)
• M6: 1,447,958 km (0.097 R)
• M7: 1,547,291 km (0.09 R)
• M8: 1,914,254 km (0.052 R)
• M9: 2,098,709 km (0.103 R)
• M10: 2,289,296 km (0.041 R)
• M11: 2,958,896 km (0.082 R)
• M12: 3,151,878 km (0.103 R)
• M13: 3,371,188 km (0.1 R)
• M14: 3,618,473 km (0.102 R)
• M15: 4,035,851 km (0.117 R)
• M16: 4,130,846 km (0.093 R)
• M17: 4,274,610 km (0.084 R)
• M18: 4,468,937 km (0.109 R)
• M19: 4,591,907 km (0.097 R)
• M20: 5,069,573 km (0.101 R)
• M21: 5,223,808 km (0.076 R)
• M22: 5,802,602 km (0.105 R)
• M23: 6,018,322 km (0.11 R)
• M24: 6,264,112 km (0.067 R)
• M25: 6,652,917 km (0.103 R)
• M26: 6,850,386 km (0.094 R)
• M27: 7,659,710 km (0.116 R)
• M28: 7,836,984 km (0.102 R)
• M29: 8,560,140 km (0.03 R)
• M30: 8,991,879 km (0.034 R)
• M31: 9,273,273 km (0.115 R)
• M32: 9,876,751 km (0.049 R)
• M33: 10,005,554 km (0.102 R)
• M34: 11,088,493 km (0.115 R)
• M35: 11,933,721 km (0.064 R)
• M36: 12,070,753 km (0.09 R)
• M37: 12,173,976 km (0.084 R)
• M38: 12,555,001 km (0.109 R)
• M39: 13,045,682 km (0.106 R)
• M40: 14,299,612 km (0.081 R)
• M41: 14,738,382 km (0.083 R)
• M42: 14,959,488 km (0.094 R)
• M43: 15,107,440 km (0.054 R)
• M44: 15,516,890 km (0.105 R)
• M45: 15,629,238 km (0.113 R)
• M46: 16,346,859 km (0.069 R)
• M47: 17,736,024 km (0.069 R)
• M48: 17,971,342 km (0.118 R)
• M49: 19,565,756 km (0.117 R)
• M50: 20,338,878 km (0.066 R)
• M51: 20,543,976 km (0.106 R)
• M52: 21,413,140 km (0.049 R)
• M53: 21,538,204 km (0.071 R)
• M54: 21,957,078 km (0.108 R)
• M55: 22,632,961 km (0.118 R)
• M56: 23,315,576 km (0.068 R)
• M57: 23,702,586 km (0.089 R)
• M58: 23,832,138 km (0.07 R)
• M59: 24,308,906 km (0.074 R)
• M60: 24,613,936 km (0.118 R)
• M61: 24,701,301 km (0.085 R)
• M62: 25,183,754 km (0.075 R)
• M63: 25,359,981 km (0.053 R)
• M64: 25,757,911 km (0.093 R)
• M65: 26,024,494 km (0.071 R)
• M66: 26,515,325 km (0.118 R)
• M67: 26,694,693 km (0.083 R)
• M68: 27,415,904 km (0.107 R)
• M69: 27,642,545 km (0.044 R)
• M70: 28,097,771 km (0.106 R)
• M71: 28,280,580 km (0.119 R)
• M72: 28,647,394 km (0.083 R)
• M73: 28,923,402 km (0.114 R)
• M74: 29,432,035 km (0.091 R)
• M75: 29,896,835 km (0.041 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 395.8

Radius: 6.9

Gravity: 8.31 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 14.68 AU - 16.28 AU

Year: 23193 Days

Day: 22.6 Hours

Environment

Temp: -192 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 69,951,501 km

• M1: 110,553 km (0.092 R)
• M2: 298,448 km (0.045 R)
• M3: 395,836 km (0.102 R)
• M4: 1,216,979 km (0.113 R)
• M5: 1,726,359 km (0.036 R)
• M6: 2,131,470 km (0.065 R)
• M7: 2,881,853 km (0.112 R)
• M8: 2,953,810 km (0.108 R)
• M9: 3,589,900 km (0.084 R)
• M10: 4,349,259 km (0.101 R)
• M11: 4,431,987 km (0.081 R)
• M12: 5,156,788 km (0.071 R)
• M13: 5,690,254 km (0.099 R)
• M14: 5,780,911 km (0.057 R)
• M15: 6,428,819 km (0.114 R)
• M16: 6,713,504 km (0.103 R)
• M17: 7,099,466 km (0.106 R)
• M18: 7,246,072 km (0.083 R)
• M19: 7,742,139 km (0.105 R)
• M20: 7,893,083 km (0.097 R)
• M21: 8,976,620 km (0.111 R)
• M22: 9,029,428 km (0.115 R)
• M23: 9,724,759 km (0.066 R)
• M24: 11,166,434 km (0.037 R)
• M25: 11,337,125 km (0.058 R)
• M26: 12,378,775 km (0.108 R)
• M27: 13,330,217 km (0.094 R)
• M28: 13,450,943 km (0.09 R)
• M29: 13,693,142 km (0.107 R)
• M30: 13,814,765 km (0.088 R)
• M31: 14,059,208 km (0.1 R)
• M32: 15,746,223 km (0.05 R)
• M33: 16,840,831 km (0.103 R)
• M34: 17,036,505 km (0.1 R)
• M35: 17,298,600 km (0.103 R)
• M36: 17,760,558 km (0.087 R)
• M37: 18,226,556 km (0.087 R)
• M38: 19,648,484 km (0.113 R)
• M39: 20,546,520 km (0.115 R)
• M40: 21,176,177 km (0.043 R)
• M41: 21,387,409 km (0.102 R)
• M42: 22,382,385 km (0.096 R)
• M43: 22,669,463 km (0.096 R)
• M44: 22,885,632 km (0.112 R)
• M45: 23,102,399 km (0.111 R)
• M46: 24,861,221 km (0.07 R)
• M47: 26,057,406 km (0.093 R)
• M48: 27,348,884 km (0.071 R)
• M49: 28,661,157 km (0.109 R)
• M50: 30,548,334 km (0.057 R)
• M51: 30,627,770 km (0.118 R)
• M52: 32,313,290 km (0.095 R)
• M53: 32,718,999 km (0.105 R)
• M54: 33,044,674 km (0.117 R)
• M55: 34,193,436 km (0.112 R)
• M56: 36,698,751 km (0.095 R)
• M57: 37,121,964 km (0.105 R)
• M58: 38,230,035 km (0.089 R)
• M59: 38,917,288 km (0.111 R)
• M60: 39,176,092 km (0.074 R)
• M61: 40,304,060 km (0.086 R)
• M62: 42,591,860 km (0.048 R)
• M63: 43,125,775 km (0.118 R)
• M64: 43,214,935 km (0.096 R)
• M65: 43,483,015 km (0.119 R)
• M66: 44,831,041 km (0.096 R)
• M67: 45,828,410 km (0.117 R)
• M68: 47,016,516 km (0.114 R)
• M69: 47,108,369 km (0.09 R)
• M70: 47,660,386 km (0.06 R)
• M71: 52,058,862 km (0.076 R)
• M72: 52,725,022 km (0.065 R)
• M73: 52,915,908 km (0.085 R)
• M74: 53,202,538 km (0.111 R)
• M75: 55,611,662 km (0.111 R)
• M76: 55,708,751 km (0.089 R)
• M77: 55,805,840 km (0.049 R)
• M78: 56,195,094 km (0.115 R)
• M79: 57,171,968 km (0.1 R)
• M80: 57,368,091 km (0.112 R)
• M81: 57,859,220 km (0.072 R)
• M82: 58,746,785 km (0.077 R)
• M83: 59,043,587 km (0.116 R)
• M84: 59,340,987 km (0.103 R)
• M85: 59,837,652 km (0.113 R)
• M86: 60,136,250 km (0.084 R)
• M87: 60,635,159 km (0.109 R)
• M88: 63,048,920 km (0.088 R)
• M89: 63,150,198 km (0.117 R)
• M90: 66,007,218 km (0.094 R)
• M91: 67,865,972 km (0.091 R)
• M92: 68,177,584 km (0.036 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 447 - 12,039 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit