🌌 Stone's Star System Generator

Asteroid Belt

Center: 1.07 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 383.9

Radius: 10

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 1.74 AU - 2.52 AU

Year: 2073 Days

Day: 12.1 Hours

Environment

Temp: -204 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 40,069,509 km

• M1: 129,253 km (0.116 R)
• M2: 206,595 km (0.119 R)
• M3: 277,803 km (0.086 R)
• M4: 446,550 km (0.097 R)
• M5: 538,852 km (0.103 R)
• M6: 673,340 km (0.03 R)
• M7: 827,575 km (0.108 R)
• M8: 921,373 km (0.112 R)
• M9: 1,120,039 km (0.034 R)
• M10: 1,314,666 km (0.119 R)
• M11: 1,472,941 km (0.044 R)
• M12: 1,707,061 km (0.115 R)
• M13: 1,808,339 km (0.09 R)
• M14: 2,016,878 km (0.078 R)
• M15: 2,300,067 km (0.117 R)
• M16: 2,654,315 km (0.03 R)
• M17: 2,855,973 km (0.109 R)
• M18: 2,989,265 km (0.11 R)
• M19: 3,075,134 km (0.097 R)
• M20: 3,161,751 km (0.093 R)
• M21: 3,312,396 km (0.097 R)
• M22: 3,452,569 km (0.104 R)
• M23: 3,660,062 km (0.115 R)
• M24: 3,738,900 km (0.115 R)
• M25: 3,965,391 km (0.112 R)
• M26: 4,390,249 km (0.095 R)
• M27: 4,530,422 km (0.071 R)
• M28: 4,800,895 km (0.069 R)
• M29: 5,076,604 km (0.063 R)
• M30: 5,372,508 km (0.082 R)
• M31: 5,447,307 km (0.095 R)
• M32: 5,674,098 km (0.102 R)
• M33: 5,811,578 km (0.092 R)
• M34: 5,903,880 km (0.119 R)
• M35: 6,199,485 km (0.117 R)
• M36: 6,341,155 km (0.099 R)
• M37: 6,675,955 km (0.068 R)
• M38: 6,805,058 km (0.067 R)
• M39: 7,016,739 km (0.036 R)
• M40: 7,867,502 km (0.098 R)
• M41: 7,986,881 km (0.115 R)
• M42: 8,158,469 km (0.09 R)
• M43: 8,383,315 km (0.091 R)
• M44: 8,698,069 km (0.053 R)
• M45: 8,786,182 km (0.052 R)
• M46: 8,998,761 km (0.106 R)
• M47: 9,087,921 km (0.117 R)
• M48: 9,465,506 km (0.066 R)
• M49: 10,050,733 km (0.065 R)
• M50: 10,143,334 km (0.104 R)
• M51: 10,591,230 km (0.083 R)
• M52: 10,761,024 km (0.098 R)
• M53: 11,007,711 km (0.03 R)
• M54: 11,294,639 km (0.069 R)
• M55: 11,390,831 km (0.073 R)
• M56: 11,487,321 km (0.099 R)
• M57: 11,584,111 km (0.104 R)
• M58: 11,993,411 km (0.101 R)
• M59: 12,566,670 km (0.057 R)
• M60: 12,646,406 km (0.069 R)
• M61: 12,967,143 km (0.074 R)
• M62: 13,148,606 km (0.038 R)
• M63: 13,412,496 km (0.064 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 806

Radius: 8

Gravity: 12.59 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.91 AU - 2.85 AU

Year: 2448 Days

Day: 11.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 40,069,509 km

• M1: 102,774 km (0.113 R)
• M2: 177,423 km (0.09 R)
• M3: 251,324 km (0.102 R)
• M4: 326,423 km (0.114 R)
• M5: 396,434 km (0.104 R)
• M6: 472,280 km (0.114 R)
• M7: 667,356 km (0.062 R)
• M8: 779,555 km (0.093 R)
• M9: 1,142,778 km (0.091 R)
• M10: 1,244,355 km (0.032 R)
• M11: 1,372,560 km (0.109 R)
• M12: 1,505,104 km (0.099 R)
• M13: 1,629,570 km (0.089 R)
• M14: 1,835,715 km (0.09 R)
• M15: 1,915,152 km (0.099 R)
• M16: 2,132,966 km (0.076 R)
• M17: 2,244,866 km (0.078 R)
• M18: 2,727,020 km (0.108 R)
• M19: 3,161,003 km (0.11 R)
• M20: 3,240,739 km (0.037 R)
• M21: 3,305,066 km (0.107 R)
• M22: 3,386,148 km (0.05 R)
• M23: 3,666,644 km (0.06 R)
• M24: 3,903,158 km (0.028 R)
• M25: 4,179,765 km (0.097 R)
• M26: 4,338,189 km (0.1 R)
• M27: 4,409,248 km (0.052 R)
• M28: 5,028,732 km (0.095 R)
• M29: 5,272,727 km (0.101 R)
• M30: 5,949,208 km (0.113 R)
• M31: 6,028,196 km (0.04 R)
• M32: 6,267,403 km (0.089 R)
• M33: 6,347,886 km (0.053 R)
• M34: 6,652,617 km (0.071 R)
• M35: 7,066,555 km (0.047 R)
• M36: 7,318,777 km (0.08 R)
• M37: 7,382,356 km (0.099 R)
• M38: 7,446,084 km (0.091 R)
• M39: 7,638,318 km (0.095 R)
• M40: 7,702,794 km (0.112 R)
• M41: 7,919,113 km (0.112 R)
• M42: 8,071,553 km (0.074 R)
• M43: 8,159,217 km (0.095 R)
• M44: 8,446,146 km (0.053 R)
• M45: 8,871,453 km (0.12 R)
• M46: 9,075,355 km (0.099 R)
• M47: 9,395,644 km (0.117 R)
• M48: 9,510,834 km (0.119 R)
• M49: 10,094,416 km (0.117 R)
• M50: 10,188,812 km (0.028 R)
• M51: 10,545,603 km (0.11 R)
• M52: 10,665,431 km (0.083 R)
• M53: 11,320,370 km (0.09 R)
• M54: 11,988,325 km (0.081 R)
• M55: 12,264,033 km (0.059 R)
• M56: 12,516,704 km (0.113 R)
• M57: 13,232,979 km (0.094 R)
• M58: 13,440,022 km (0.116 R)
• M59: 13,883,730 km (0.101 R)
• M60: 13,936,238 km (0.079 R)
• M61: 14,305,596 km (0.095 R)
• M62: 14,678,244 km (0.096 R)
• M63: 15,460,342 km (0.1 R)
• M64: 16,283,728 km (0.091 R)
• M65: 16,366,755 km (0.067 R)
• M66: 16,868,506 km (0.082 R)
• M67: 17,205,700 km (0.083 R)
• M68: 17,658,832 km (0.109 R)
• M69: 18,259,467 km (0.116 R)
• M70: 18,519,020 km (0.046 R)
• M71: 18,808,791 km (0.119 R)
• M72: 18,983,371 km (0.101 R)
• M73: 19,070,886 km (0.096 R)
• M74: 19,246,215 km (0.08 R)
• M75: 19,598,667 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 63.6

Radius: 8.2

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.25 AU - 2.91 AU

Year: 2763 Days

Day: 7.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 40,069,509 km

• M1: 103,522 km (0.09 R)
• M2: 372,798 km (0.095 R)
• M3: 494,870 km (0.106 R)
• M4: 599,588 km (0.039 R)
• M5: 791,672 km (0.118 R)
• M6: 922,570 km (0.112 R)
• M7: 1,260,811 km (0.092 R)
• M8: 1,524,103 km (0.049 R)
• M9: 1,643,482 km (0.111 R)
• M10: 1,859,801 km (0.116 R)
• M11: 2,126,683 km (0.104 R)
• M12: 2,193,254 km (0.115 R)
• M13: 2,277,478 km (0.118 R)
• M14: 2,492,749 km (0.066 R)
• M15: 2,687,675 km (0.103 R)
• M16: 3,036,238 km (0.114 R)
• M17: 3,244,628 km (0.062 R)
• M18: 3,487,276 km (0.114 R)
• M19: 3,665,597 km (0.064 R)
• M20: 3,826,564 km (0.097 R)
• M21: 3,979,752 km (0.096 R)
• M22: 4,072,652 km (0.104 R)
• M23: 4,786,384 km (0.079 R)
• M24: 4,852,207 km (0.087 R)
• M25: 4,918,479 km (0.098 R)
• M26: 5,018,111 km (0.117 R)
• M27: 5,230,989 km (0.101 R)
• M28: 5,321,495 km (0.06 R)
• M29: 5,607,676 km (0.065 R)
• M30: 5,700,427 km (0.078 R)
• M31: 5,899,093 km (0.107 R)
• M32: 6,040,612 km (0.073 R)
• M33: 6,351,178 km (0.069 R)
• M34: 6,447,818 km (0.045 R)
• M35: 6,545,056 km (0.106 R)
• M36: 6,630,327 km (0.091 R)
• M37: 6,839,315 km (0.103 R)
• M38: 7,339,571 km (0.074 R)
• M39: 7,851,495 km (0.115 R)
• M40: 8,256,157 km (0.064 R)
• M41: 8,414,731 km (0.04 R)
• M42: 8,614,294 km (0.109 R)
• M43: 8,748,184 km (0.084 R)
• M44: 9,099,590 km (0.055 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 757.8

Radius: 14.1

Gravity: 3.81 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 3.47 AU - 3.57 AU

Year: 4404 Days

Day: 5.7 Hours

Environment

Temp: -207 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 40,069,509 km

• M1: 212,878 km (0.103 R)
• M2: 316,250 km (0.116 R)
• M3: 484,697 km (0.046 R)
• M4: 584,030 km (0.096 R)
• M5: 681,119 km (0.097 R)
• M6: 845,078 km (0.113 R)
• M7: 1,090,868 km (0.063 R)
• M8: 1,201,720 km (0.072 R)
• M9: 1,512,135 km (0.097 R)
• M10: 1,653,356 km (0.041 R)
• M11: 1,848,880 km (0.104 R)
• M12: 2,017,776 km (0.093 R)
• M13: 2,353,324 km (0.082 R)
• M14: 2,444,728 km (0.084 R)
• M15: 2,574,729 km (0.074 R)
• M16: 2,822,613 km (0.111 R)
• M17: 2,998,839 km (0.048 R)
• M18: 3,158,609 km (0.119 R)
• M19: 3,280,382 km (0.12 R)
• M20: 3,549,658 km (0.096 R)
• M21: 4,110,201 km (0.116 R)
• M22: 4,355,841 km (0.119 R)
• M23: 4,791,620 km (0.05 R)
• M24: 4,955,729 km (0.081 R)
• M25: 5,121,782 km (0.074 R)
• M26: 5,435,190 km (0.088 R)
• M27: 5,680,530 km (0.118 R)
• M28: 6,055,572 km (0.109 R)
• M29: 6,829,891 km (0.099 R)
• M30: 7,015,093 km (0.058 R)
• M31: 7,121,607 km (0.106 R)
• M32: 7,363,506 km (0.105 R)
• M33: 7,938,411 km (0.05 R)
• M34: 8,217,261 km (0.098 R)
• M35: 8,386,157 km (0.089 R)
• M36: 8,641,671 km (0.082 R)
• M37: 10,047,741 km (0.072 R)
• M38: 10,623,992 km (0.091 R)
• M39: 11,024,465 km (0.053 R)
• M40: 11,179,748 km (0.091 R)
• M41: 11,618,668 km (0.077 R)
• M42: 11,967,530 km (0.077 R)
• M43: 12,610,652 km (0.038 R)
• M44: 13,232,081 km (0.103 R)
• M45: 13,863,534 km (0.084 R)
• M46: 14,098,702 km (0.038 R)
• M47: 14,538,819 km (0.111 R)
• M48: 14,641,144 km (0.104 R)
• M49: 14,880,650 km (0.105 R)
• M50: 15,259,581 km (0.083 R)
• M51: 15,432,816 km (0.039 R)
• M52: 15,711,516 km (0.1 R)
• M53: 16,309,309 km (0.113 R)
• M54: 16,628,701 km (0.091 R)
• M55: 17,165,757 km (0.081 R)
• M56: 17,273,917 km (0.089 R)
• M57: 17,927,360 km (0.057 R)
• M58: 18,220,273 km (0.117 R)
• M59: 18,551,931 km (0.091 R)
• M60: 18,922,635 km (0.119 R)
• M61: 19,370,680 km (0.064 R)
• M62: 20,201,397 km (0.117 R)
• M63: 20,353,688 km (0.091 R)
• M64: 20,812,953 km (0.072 R)
• M65: 21,159,572 km (0.11 R)
• M66: 22,802,306 km (0.115 R)
• M67: 23,558,972 km (0.105 R)
• M68: 23,679,249 km (0.119 R)
• M69: 23,920,251 km (0.086 R)
• M70: 24,607,653 km (0.117 R)
• M71: 25,015,158 km (0.055 R)
• M72: 25,424,757 km (0.11 R)
• M73: 26,209,248 km (0.056 R)
• M74: 26,417,039 km (0.105 R)
• M75: 26,876,155 km (0.1 R)
• M76: 27,085,592 km (0.062 R)
• M77: 27,337,814 km (0.075 R)
• M78: 27,717,493 km (0.114 R)
• M79: 28,141,454 km (0.085 R)
• M80: 28,311,547 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 360

Radius: 11.3

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 3.59 AU - 4.87 AU

Year: 5801 Days

Day: 11.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 40,069,509 km

• M1: 153,039 km (0.044 R)
• M2: 233,821 km (0.105 R)
• M3: 346,618 km (0.083 R)
• M4: 485,744 km (0.063 R)
• M5: 563,834 km (0.092 R)
• M6: 679,324 km (0.071 R)
• M7: 1,077,404 km (0.112 R)
• M8: 1,295,218 km (0.114 R)
• M9: 1,572,722 km (0.107 R)
• M10: 1,695,542 km (0.117 R)
• M11: 1,789,789 km (0.093 R)
• M12: 1,885,831 km (0.028 R)
• M13: 2,100,055 km (0.083 R)
• M14: 2,322,357 km (0.03 R)
• M15: 2,643,095 km (0.073 R)
• M16: 3,228,771 km (0.057 R)
• M17: 3,366,550 km (0.115 R)
• M18: 4,320,686 km (0.114 R)
• M19: 4,895,142 km (0.095 R)
• M20: 5,031,276 km (0.085 R)
• M21: 5,922,131 km (0.111 R)
• M22: 6,043,006 km (0.084 R)
• M23: 6,115,860 km (0.109 R)
• M24: 6,262,616 km (0.114 R)
• M25: 6,460,085 km (0.101 R)
• M26: 6,760,178 km (0.073 R)
• M27: 6,937,302 km (0.108 R)
• M28: 7,374,128 km (0.112 R)
• M29: 7,452,068 km (0.109 R)
• M30: 8,032,658 km (0.117 R)
• M31: 8,792,615 km (0.116 R)
• M32: 8,903,018 km (0.114 R)
• M33: 9,181,270 km (0.119 R)
• M34: 9,490,489 km (0.063 R)
• M35: 10,004,058 km (0.091 R)
• M36: 10,351,574 km (0.068 R)
• M37: 10,497,432 km (0.086 R)
• M38: 10,644,038 km (0.03 R)
• M39: 11,598,622 km (0.062 R)
• M40: 11,872,087 km (0.105 R)
• M41: 12,024,826 km (0.025 R)
• M42: 12,425,300 km (0.042 R)
• M43: 12,892,793 km (0.073 R)
• M44: 13,302,542 km (0.048 R)
• M45: 13,429,550 km (0.052 R)
• M46: 13,684,615 km (0.069 R)
• M47: 14,070,428 km (0.117 R)
• M48: 14,721,178 km (0.099 R)
• M49: 15,182,688 km (0.034 R)
• M50: 15,381,952 km (0.098 R)
• M51: 16,255,305 km (0.05 R)
• M52: 16,391,139 km (0.099 R)
• M53: 16,527,274 km (0.117 R)
• M54: 16,732,223 km (0.1 R)
• M55: 16,869,404 km (0.11 R)
• M56: 16,972,477 km (0.096 R)
• M57: 17,630,259 km (0.035 R)
• M58: 17,909,707 km (0.116 R)
• M59: 18,050,030 km (0.064 R)
• M60: 18,614,762 km (0.074 R)
• M61: 19,400,899 km (0.091 R)
• M62: 19,761,729 km (0.09 R)
• M63: 20,343,814 km (0.108 R)
• M64: 20,931,584 km (0.063 R)
• M65: 21,190,389 km (0.087 R)
• M66: 21,413,140 km (0.098 R)
• M67: 21,711,289 km (0.077 R)
• M68: 22,803,951 km (0.084 R)
• M69: 22,879,947 km (0.073 R)
• M70: 23,414,311 km (0.071 R)
• M71: 23,491,054 km (0.054 R)
• M72: 23,760,031 km (0.111 R)
• M73: 24,301,277 km (0.052 R)
• M74: 24,885,606 km (0.057 R)
• M75: 25,395,884 km (0.116 R)
• M76: 25,790,673 km (0.108 R)
• M77: 25,949,097 km (0.077 R)
• M78: 26,028,534 km (0.064 R)
• M79: 26,906,972 km (0.09 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 416.6

Radius: 6.9

Gravity: 8.75 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 5.56 AU - 6.44 AU

Year: 9801 Days

Day: 18.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 40,069,509 km

• M1: 87,066 km (0.032 R)
• M2: 225,294 km (0.097 R)
• M3: 442,361 km (0.103 R)
• M4: 658,829 km (0.054 R)
• M5: 718,070 km (0.109 R)
• M6: 826,379 km (0.12 R)
• M7: 990,488 km (0.099 R)
• M8: 1,369,269 km (0.097 R)
• M9: 1,564,495 km (0.082 R)
• M10: 1,981,573 km (0.112 R)
• M11: 2,157,949 km (0.088 R)
• M12: 2,502,174 km (0.12 R)
• M13: 3,088,448 km (0.102 R)
• M14: 3,769,866 km (0.086 R)
• M15: 4,381,572 km (0.035 R)
• M16: 4,467,441 km (0.115 R)
• M17: 4,757,511 km (0.056 R)
• M18: 4,816,303 km (0.113 R)
• M19: 4,904,865 km (0.107 R)
• M20: 5,113,854 km (0.111 R)
• M21: 5,540,208 km (0.116 R)
• M22: 5,602,141 km (0.105 R)
• M23: 6,394,711 km (0.116 R)
• M24: 6,459,636 km (0.054 R)
• M25: 6,655,759 km (0.109 R)
• M26: 6,853,826 km (0.117 R)
• M27: 7,255,946 km (0.1 R)
• M28: 8,223,395 km (0.112 R)
• M29: 8,722,304 km (0.117 R)
• M30: 9,304,389 km (0.102 R)
• M31: 10,087,384 km (0.12 R)
• M32: 10,505,959 km (0.109 R)
• M33: 10,852,578 km (0.065 R)
• M34: 11,320,669 km (0.076 R)
• M35: 12,357,383 km (0.053 R)
• M36: 12,845,969 km (0.096 R)
• M37: 13,716,330 km (0.12 R)
• M38: 14,477,334 km (0.083 R)
• M39: 14,562,754 km (0.111 R)
• M40: 14,691,259 km (0.117 R)
• M41: 14,777,128 km (0.111 R)
• M42: 15,644,497 km (0.07 R)
• M43: 15,688,329 km (0.101 R)
• M44: 15,907,938 km (0.116 R)
• M45: 16,128,595 km (0.032 R)
• M46: 16,350,299 km (0.077 R)
• M47: 16,483,890 km (0.059 R)
• M48: 16,528,470 km (0.055 R)
• M49: 16,662,360 km (0.086 R)
• M50: 16,707,090 km (0.08 R)
• M51: 18,205,911 km (0.115 R)
• M52: 18,298,213 km (0.119 R)
• M53: 18,808,043 km (0.111 R)
• M54: 20,701,503 km (0.042 R)
• M55: 20,846,014 km (0.033 R)
• M56: 20,942,505 km (0.033 R)
• M57: 20,990,825 km (0.052 R)
• M58: 22,803,802 km (0.102 R)
• M59: 24,259,389 km (0.118 R)
• M60: 24,310,252 km (0.077 R)
• M61: 25,126,758 km (0.042 R)
• M62: 25,796,657 km (0.048 R)
• M63: 25,952,239 km (0.116 R)
• M64: 26,420,480 km (0.073 R)
• M65: 26,734,187 km (0.086 R)
• M66: 26,838,905 km (0.044 R)
• M67: 27,417,999 km (0.105 R)
• M68: 27,470,956 km (0.09 R)
• M69: 27,735,744 km (0.08 R)
• M70: 28,267,714 km (0.11 R)
• M71: 28,428,083 km (0.114 R)
• M72: 29,072,102 km (0.07 R)
• M73: 30,484,157 km (0.109 R)
• M74: 30,593,662 km (0.09 R)
• M75: 30,923,226 km (0.118 R)
• M76: 30,978,129 km (0.028 R)
• M77: 31,640,997 km (0.119 R)
• M78: 32,196,753 km (0.073 R)
• M79: 33,374,537 km (0.106 R)
• M80: 34,167,555 km (0.025 R)
• M81: 34,224,552 km (0.06 R)
• M82: 34,452,390 km (0.116 R)
• M83: 35,253,785 km (0.043 R)
• M84: 36,235,147 km (0.119 R)
• M85: 36,641,904 km (0.092 R)
• M86: 37,283,978 km (0.096 R)
• M87: 37,577,190 km (0.105 R)
• M88: 38,106,766 km (0.119 R)
• M89: 38,165,708 km (0.115 R)
• M90: 38,402,073 km (0.113 R)
• M91: 38,757,368 km (0.097 R)
• M92: 39,530,938 km (0.109 R)
• M93: 39,650,467 km (0.081 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 332 - 13,529 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit