🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.57

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.4 AU - 0.62 AU

Year: 128 Days

Day: 38.9 Hours

Environment

Temp: 206 °C

Axial Tilt: 37.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 40,717,676 km

• M1: 97,538 km (0.072 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.25

Radius: 1.09

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.66 AU - 0.72 AU

Year: 201 Days

Day: 16.9 Hours

Environment

Temp: 163 °C

Axial Tilt: 13.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 40,717,676 km

• M1: 93,199 km (0.078 R)
• M2: 414,835 km (0.12 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.91 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.02

Radius: 1.32

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.85 AU - 0.97 AU

Year: 305 Days

Day: 20 Hours

Environment

Temp: 159 °C

Axial Tilt: 28.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 40,717,676 km

• M1: 125,662 km (0.102 R)
• M2: 446,699 km (0.066 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 94.2

Radius: 11.4

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 6.07 AU - 6.09 AU

Year: 5269 Days

Day: 10.7 Hours

Environment

Temp: -139 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 40,717,676 km

• M1: 171,140 km (0.087 R)
• M2: 269,725 km (0.118 R)
• M3: 365,168 km (0.12 R)
• M4: 617,690 km (0.11 R)
• M5: 717,471 km (0.045 R)
• M6: 857,345 km (0.074 R)
• M7: 1,061,846 km (0.103 R)
• M8: 1,184,965 km (0.082 R)
• M9: 1,282,951 km (0.055 R)
• M10: 1,373,757 km (0.098 R)
• M11: 1,519,466 km (0.031 R)
• M12: 1,648,569 km (0.111 R)
• M13: 1,815,221 km (0.061 R)
• M14: 2,011,044 km (0.096 R)
• M15: 2,398,802 km (0.088 R)
• M16: 2,653,118 km (0.079 R)
• M17: 2,731,208 km (0.113 R)
• M18: 2,929,874 km (0.118 R)
• M19: 3,147,090 km (0.044 R)
• M20: 3,243,731 km (0.109 R)
• M21: 3,698,658 km (0.096 R)
• M22: 3,815,643 km (0.073 R)
• M23: 3,889,395 km (0.1 R)
• M24: 3,978,406 km (0.086 R)
• M25: 4,128,602 km (0.062 R)
• M26: 4,512,021 km (0.03 R)
• M27: 4,621,377 km (0.098 R)
• M28: 4,795,210 km (0.102 R)
• M29: 5,100,539 km (0.063 R)
• M30: 5,346,179 km (0.115 R)
• M31: 5,495,328 km (0.088 R)
• M32: 5,679,782 km (0.044 R)
• M33: 5,900,140 km (0.113 R)
• M34: 6,437,346 km (0.028 R)
• M35: 6,972,308 km (0.101 R)
• M36: 7,153,770 km (0.07 R)
• M37: 7,595,832 km (0.105 R)
• M38: 8,027,721 km (0.079 R)
• M39: 8,103,717 km (0.043 R)
• M40: 8,179,862 km (0.091 R)
• M41: 9,311,420 km (0.093 R)
• M42: 9,491,387 km (0.089 R)
• M43: 9,915,796 km (0.09 R)
• M44: 10,099,651 km (0.103 R)
• M45: 10,181,781 km (0.113 R)
• M46: 10,741,576 km (0.105 R)
• M47: 12,064,769 km (0.052 R)
• M48: 12,217,359 km (0.09 R)
• M49: 12,414,529 km (0.055 R)
• M50: 12,524,633 km (0.077 R)
• M51: 13,057,201 km (0.108 R)
• M52: 13,371,207 km (0.103 R)
• M53: 13,755,973 km (0.114 R)
• M54: 13,847,078 km (0.07 R)
• M55: 14,282,408 km (0.04 R)
• M56: 14,536,425 km (0.037 R)
• M57: 14,908,774 km (0.081 R)
• M58: 15,260,628 km (0.11 R)
• M59: 15,378,512 km (0.115 R)
• M60: 15,449,421 km (0.053 R)
• M61: 15,733,956 km (0.069 R)
• M62: 16,092,243 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 7.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 568.3

Radius: 9.1

Gravity: 6.86 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 5.81 AU - 8.41 AU

Year: 6663 Days

Day: 11.7 Hours

Environment

Temp: -157 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 40,717,676 km

• M1: 152,739 km (0.115 R)
• M2: 397,482 km (0.096 R)
• M3: 531,072 km (0.037 R)
• M4: 774,767 km (0.036 R)
• M5: 932,144 km (0.034 R)
• M6: 1,131,857 km (0.04 R)
• M7: 1,519,017 km (0.092 R)
• M8: 1,984,565 km (0.063 R)
• M9: 2,082,851 km (0.101 R)
• M10: 3,016,940 km (0.038 R)
• M11: 3,199,300 km (0.09 R)
• M12: 3,551,154 km (0.093 R)
• M13: 3,647,046 km (0.066 R)
• M14: 4,064,425 km (0.084 R)
• M15: 4,575,002 km (0.115 R)
• M16: 4,811,516 km (0.113 R)
• M17: 5,078,848 km (0.109 R)
• M18: 5,268,987 km (0.115 R)
• M19: 5,461,519 km (0.06 R)
• M20: 5,628,321 km (0.109 R)
• M21: 5,712,395 km (0.112 R)
• M22: 5,825,042 km (0.111 R)
• M23: 5,910,163 km (0.096 R)
• M24: 6,167,771 km (0.098 R)
• M25: 6,458,290 km (0.087 R)
• M26: 6,872,676 km (0.035 R)
• M27: 7,083,160 km (0.116 R)
• M28: 7,204,334 km (0.094 R)
• M29: 7,977,606 km (0.109 R)
• M30: 8,166,997 km (0.094 R)
• M31: 8,582,729 km (0.08 R)
• M32: 8,939,969 km (0.113 R)
• M33: 9,071,016 km (0.102 R)
• M34: 9,301,996 km (0.113 R)
• M35: 9,568,280 km (0.115 R)
• M36: 10,142,586 km (0.088 R)
• M37: 10,762,819 km (0.116 R)
• M38: 11,183,189 km (0.1 R)
• M39: 11,573,340 km (0.112 R)
• M40: 11,859,820 km (0.112 R)
• M41: 11,931,777 km (0.105 R)
• M42: 12,112,341 km (0.095 R)
• M43: 12,293,953 km (0.039 R)
• M44: 12,880,825 km (0.03 R)
• M45: 12,954,876 km (0.105 R)
• M46: 13,177,777 km (0.053 R)
• M47: 13,289,676 km (0.074 R)
• M48: 14,005,951 km (0.108 R)
• M49: 14,967,417 km (0.064 R)
• M50: 15,436,406 km (0.048 R)
• M51: 16,109,297 km (0.067 R)
• M52: 16,189,033 km (0.047 R)
• M53: 16,994,019 km (0.069 R)
• M54: 17,935,887 km (0.102 R)
• M55: 18,392,310 km (0.098 R)
• M56: 18,852,623 km (0.102 R)
• M57: 18,936,697 km (0.094 R)
• M58: 19,105,294 km (0.028 R)
• M59: 19,443,983 km (0.093 R)
• M60: 19,528,955 km (0.076 R)
• M61: 20,299,234 km (0.09 R)
• M62: 20,688,039 km (0.109 R)
• M63: 20,774,806 km (0.118 R)
• M64: 20,861,722 km (0.09 R)
• M65: 21,473,278 km (0.116 R)
• M66: 21,957,826 km (0.052 R)
• M67: 22,490,693 km (0.043 R)
• M68: 22,669,164 km (0.045 R)
• M69: 22,892,962 km (0.025 R)
• M70: 23,977,696 km (0.086 R)
• M71: 24,709,978 km (0.063 R)
• M72: 25,217,863 km (0.084 R)
• M73: 26,149,857 km (0.1 R)
• M74: 27,616,665 km (0.069 R)
• M75: 28,143,698 km (0.111 R)
• M76: 29,744,245 km (0.045 R)
• M77: 29,891,151 km (0.031 R)
• M78: 30,136,641 km (0.091 R)
• M79: 30,382,879 km (0.092 R)
• M80: 31,523,712 km (0.118 R)
• M81: 33,185,146 km (0.078 R)
• M82: 33,541,189 km (0.115 R)
• M83: 33,643,215 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 833.3

Radius: 12

Gravity: 5.79 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 7.33 AU - 9.87 AU

Year: 8864 Days

Day: 7.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 40,717,676 km

• M1: 203,603 km (0.101 R)
• M2: 324,179 km (0.11 R)
• M3: 1,058,555 km (0.083 R)
• M4: 1,194,389 km (0.044 R)
• M5: 1,441,226 km (0.099 R)
• M6: 2,254,290 km (0.062 R)
• M7: 2,829,045 km (0.114 R)
• M8: 2,993,603 km (0.051 R)
• M9: 3,246,573 km (0.099 R)
• M10: 3,448,231 km (0.1 R)
• M11: 3,536,045 km (0.093 R)
• M12: 4,549,870 km (0.109 R)
• M13: 4,808,674 km (0.12 R)
• M14: 4,939,871 km (0.062 R)
• M15: 5,340,943 km (0.114 R)
• M16: 5,926,918 km (0.059 R)
• M17: 6,281,315 km (0.117 R)
• M18: 6,936,704 km (0.034 R)
• M19: 7,461,643 km (0.119 R)
• M20: 7,575,786 km (0.053 R)
• M21: 9,112,306 km (0.116 R)
• M22: 9,811,526 km (0.078 R)
• M23: 10,104,588 km (0.099 R)
• M24: 10,442,979 km (0.119 R)
• M25: 11,436,608 km (0.091 R)
• M26: 11,700,797 km (0.099 R)
• M27: 12,100,972 km (0.063 R)
• M28: 12,280,190 km (0.108 R)
• M29: 12,550,813 km (0.105 R)
• M30: 13,189,745 km (0.063 R)
• M31: 13,374,349 km (0.112 R)
• M32: 14,357,207 km (0.086 R)
• M33: 14,547,047 km (0.102 R)
• M34: 14,929,269 km (0.085 R)
• M35: 15,025,311 km (0.111 R)
• M36: 15,314,783 km (0.059 R)
• M37: 15,703,737 km (0.089 R)
• M38: 16,145,051 km (0.115 R)
• M39: 16,243,636 km (0.104 R)
• M40: 16,491,220 km (0.103 R)
• M41: 16,739,852 km (0.086 R)
• M42: 17,544,240 km (0.078 R)
• M43: 17,900,133 km (0.117 R)
• M44: 18,155,646 km (0.096 R)
• M45: 19,086,145 km (0.102 R)
• M46: 19,452,062 km (0.118 R)
• M47: 19,767,713 km (0.058 R)
• M48: 20,617,429 km (0.064 R)
• M49: 21,914,592 km (0.053 R)
• M50: 22,517,771 km (0.06 R)
• M51: 23,126,634 km (0.083 R)
• M52: 23,237,935 km (0.082 R)
• M53: 23,853,081 km (0.111 R)
• M54: 24,473,613 km (0.097 R)
• M55: 25,961,514 km (0.116 R)
• M56: 26,250,986 km (0.1 R)
• M57: 26,367,074 km (0.108 R)
• M58: 26,716,385 km (0.096 R)
• M59: 28,128,888 km (0.076 R)
• M60: 28,307,208 km (0.106 R)
• M61: 28,664,897 km (0.098 R)
• M62: 29,024,081 km (0.05 R)
• M63: 29,444,900 km (0.116 R)
• M64: 29,686,351 km (0.105 R)
• M65: 30,353,707 km (0.105 R)
• M66: 30,475,629 km (0.093 R)
• M67: 31,271,789 km (0.055 R)
• M68: 35,803,707 km (0.031 R)
• M69: 36,319,820 km (0.111 R)
• M70: 38,014,165 km (0.102 R)
• M71: 39,069,578 km (0.052 R)
• M72: 39,534,379 km (0.09 R)
• M73: 42,225,345 km (0.098 R)
• M74: 43,386,674 km (0.113 R)
• M75: 43,661,485 km (0.073 R)
• M76: 43,936,895 km (0.077 R)
• M77: 44,074,824 km (0.038 R)
• M78: 44,489,509 km (0.093 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 124

Radius: 4.2

Gravity: 7.03 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 10.27 AU - 16.13 AU

Year: 16855 Days

Day: 15.2 Hours

Environment

Temp: -174 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 40,717,676 km

• M1: 53,406 km (0.076 R)
• M2: 160,668 km (0.109 R)
• M3: 203,902 km (0.067 R)
• M4: 251,474 km (0.117 R)
• M5: 325,226 km (0.094 R)
• M6: 382,372 km (0.07 R)
• M7: 969,245 km (0.115 R)
• M8: 1,036,414 km (0.114 R)
• M9: 1,175,241 km (0.115 R)
• M10: 1,301,501 km (0.104 R)
• M11: 1,432,400 km (0.095 R)
• M12: 1,829,133 km (0.084 R)
• M13: 1,975,739 km (0.096 R)
• M14: 2,018,225 km (0.118 R)
• M15: 2,082,702 km (0.111 R)
• M16: 2,552,888 km (0.1 R)
• M17: 2,669,574 km (0.037 R)
• M18: 2,908,033 km (0.103 R)
• M19: 3,103,857 km (0.069 R)
• M20: 3,456,758 km (0.086 R)
• M21: 4,199,960 km (0.072 R)
• M22: 4,617,937 km (0.104 R)
• M23: 4,760,055 km (0.067 R)
• M24: 5,019,757 km (0.117 R)
• M25: 5,107,271 km (0.053 R)
• M26: 5,643,280 km (0.081 R)
• M27: 6,010,543 km (0.116 R)
• M28: 6,767,957 km (0.092 R)
• M29: 6,929,523 km (0.102 R)
• M30: 7,157,959 km (0.112 R)
• M31: 7,190,721 km (0.092 R)
• M32: 7,256,544 km (0.09 R)
• M33: 7,289,455 km (0.111 R)
• M34: 7,355,578 km (0.081 R)
• M35: 8,578,839 km (0.08 R)
• M36: 9,000,406 km (0.101 R)
• M37: 9,356,898 km (0.101 R)
• M38: 9,428,855 km (0.112 R)
• M39: 10,231,148 km (0.076 R)
• M40: 11,900,511 km (0.103 R)
• M41: 12,607,361 km (0.05 R)
• M42: 13,045,982 km (0.1 R)
• M43: 13,327,674 km (0.089 R)
• M44: 13,408,607 km (0.1 R)
• M45: 14,102,442 km (0.089 R)
• M46: 14,308,737 km (0.108 R)
• M47: 15,143,942 km (0.091 R)
• M48: 15,186,129 km (0.086 R)
• M49: 15,823,565 km (0.106 R)
• M50: 15,866,350 km (0.097 R)
• M51: 16,037,939 km (0.114 R)
• M52: 16,773,960 km (0.112 R)
• M53: 17,211,983 km (0.078 R)
• M54: 17,432,490 km (0.1 R)
• M55: 17,787,187 km (0.082 R)
• M56: 17,920,778 km (0.12 R)
• M57: 18,099,547 km (0.059 R)
• M58: 18,729,504 km (0.032 R)
• M59: 18,910,966 km (0.057 R)
• M60: 18,956,294 km (0.032 R)
• M61: 19,001,772 km (0.111 R)
• M62: 19,687,977 km (0.103 R)
• M63: 21,226,143 km (0.083 R)
• M64: 21,273,416 km (0.086 R)
• M65: 21,509,930 km (0.111 R)
• M66: 21,699,770 km (0.088 R)
• M67: 21,937,929 km (0.081 R)
• M68: 23,287,601 km (0.1 R)
• M69: 23,972,311 km (0.09 R)
• M70: 24,218,549 km (0.087 R)
• M71: 25,161,614 km (0.094 R)
• M72: 25,311,661 km (0.109 R)
• M73: 25,713,032 km (0.102 R)
• M74: 26,217,924 km (0.103 R)
• M75: 27,391,221 km (0.08 R)
• M76: 27,751,751 km (0.116 R)
• M77: 28,373,480 km (0.035 R)
• M78: 28,947,338 km (0.079 R)
• M79: 29,419,768 km (0.068 R)
• M80: 30,905,574 km (0.106 R)
• M81: 31,981,930 km (0.094 R)
• M82: 32,415,764 km (0.096 R)
• M83: 32,633,429 km (0.048 R)
• M84: 32,906,296 km (0.067 R)
• M85: 34,447,902 km (0.072 R)
• M86: 34,503,402 km (0.113 R)
• M87: 36,069,243 km (0.102 R)
• M88: 36,351,235 km (0.113 R)
• M89: 36,747,371 km (0.116 R)
• M90: 36,860,766 km (0.102 R)
• M91: 37,372,690 km (0.118 R)
• M92: 37,772,415 km (0.028 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 122.3

Radius: 5.5

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 11.15 AU - 16.97 AU

Year: 18529 Days

Day: 23.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 40,717,676 km

• M1: 75,098 km (0.048 R)
• M2: 258,804 km (0.059 R)
• M3: 346,020 km (0.11 R)
• M4: 381,475 km (0.076 R)
• M5: 430,842 km (0.11 R)
• M6: 607,068 km (0.06 R)
• M7: 711,188 km (0.072 R)
• M8: 936,931 km (0.089 R)
• M9: 1,022,950 km (0.109 R)
• M10: 1,184,217 km (0.091 R)
• M11: 1,674,449 km (0.116 R)
• M12: 1,716,037 km (0.039 R)
• M13: 1,758,224 km (0.105 R)
• M14: 1,995,785 km (0.116 R)
• M15: 2,062,356 km (0.045 R)
• M16: 2,429,918 km (0.105 R)
• M17: 2,548,998 km (0.098 R)
• M18: 2,867,492 km (0.114 R)
• M19: 3,381,959 km (0.057 R)
• M20: 3,758,796 km (0.09 R)
• M21: 4,008,176 km (0.098 R)
• M22: 4,092,549 km (0.12 R)
• M23: 4,291,664 km (0.071 R)
• M24: 5,395,397 km (0.078 R)
• M25: 5,613,660 km (0.075 R)
• M26: 5,962,522 km (0.04 R)
• M27: 6,253,191 km (0.07 R)
• M28: 6,515,286 km (0.055 R)
• M29: 6,881,801 km (0.059 R)
• M30: 8,485,341 km (0.11 R)
• M31: 8,921,867 km (0.096 R)
• M32: 9,440,523 km (0.109 R)
• M33: 9,590,420 km (0.102 R)
• M34: 9,665,668 km (0.092 R)
• M35: 9,778,914 km (0.119 R)
• M36: 9,816,762 km (0.099 R)
• M37: 10,236,533 km (0.032 R)
• M38: 10,584,199 km (0.094 R)
• M39: 10,700,885 km (0.062 R)
• M40: 11,490,313 km (0.061 R)
• M41: 12,667,798 km (0.049 R)
• M42: 13,502,105 km (0.12 R)
• M43: 15,179,247 km (0.052 R)
• M44: 15,223,079 km (0.087 R)
• M45: 15,310,893 km (0.092 R)
• M46: 16,019,838 km (0.093 R)
• M47: 16,423,303 km (0.11 R)
• M48: 16,603,718 km (0.111 R)
• M49: 17,561,444 km (0.065 R)
• M50: 17,653,596 km (0.073 R)
• M51: 18,163,276 km (0.093 R)
• M52: 18,536,971 km (0.102 R)
• M53: 19,055,029 km (0.096 R)
• M54: 19,244,569 km (0.092 R)
• M55: 19,291,992 km (0.107 R)
• M56: 19,339,564 km (0.118 R)
• M57: 21,764,994 km (0.111 R)
• M58: 21,814,511 km (0.117 R)
• M59: 22,862,145 km (0.094 R)
• M60: 23,063,653 km (0.118 R)
• M61: 23,114,068 km (0.119 R)
• M62: 24,541,381 km (0.07 R)
• M63: 24,902,660 km (0.107 R)
• M64: 25,578,244 km (0.07 R)
• M65: 25,839,741 km (0.087 R)
• M66: 26,312,620 km (0.099 R)
• M67: 27,373,568 km (0.071 R)
• M68: 28,070,694 km (0.082 R)
• M69: 28,773,804 km (0.049 R)
• M70: 28,882,412 km (0.084 R)
• M71: 29,373,093 km (0.094 R)
• M72: 30,528,737 km (0.105 R)
• M73: 30,639,439 km (0.098 R)
• M74: 31,642,942 km (0.073 R)
• M75: 31,811,239 km (0.089 R)
• M76: 32,374,475 km (0.108 R)
• M77: 32,657,215 km (0.095 R)
• M78: 33,168,391 km (0.099 R)
• M79: 34,256,117 km (0.053 R)
• M80: 35,006,949 km (0.105 R)
• M81: 35,704,973 km (0.087 R)
• M82: 35,763,316 km (0.093 R)
• M83: 36,466,276 km (0.091 R)
• M84: 36,937,509 km (0.028 R)
• M85: 37,292,206 km (0.115 R)
• M86: 38,782,201 km (0.062 R)
• M87: 39,082,593 km (0.111 R)
• M88: 39,564,747 km (0.117 R)
• M89: 39,625,035 km (0.068 R)
• M90: 39,927,672 km (0.072 R)
• M91: 40,413,117 km (0.106 R)

Kuiper Belt

Range: 31.2 - 57.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 291 - 16,716 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit