🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.97

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.65 AU - 0.67 AU

Year: 199 Days

Day: 31.6 Hours

Environment

Temp: 191 °C

Axial Tilt: 42.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.49

Radius: 0.75

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 1.02 AU - 1.46 AU

Year: 512 Days

Day: 22.7 Hours

Environment

Temp: -1 °C

Axial Tilt: 31.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.09

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 2.02 AU - 2.42 AU

Year: 1227 Days

Day: 29.4 Hours

Environment

Temp: -73 °C

Axial Tilt: 28.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.12

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 2.18 AU - 2.8 AU

Year: 1457 Days

Day: 14.4 Hours

Environment

Temp: -97 °C

Axial Tilt: 2.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 33,572,980 km

• M1: 263,143 km (0.086 R)

Asteroid Belt

Center: 3.76 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 5.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 708.9

Radius: 9.1

Gravity: 8.56 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 4.95 AU - 5.09 AU

Year: 4171 Days

Day: 9.7 Hours

Environment

Temp: -151 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 33,572,980 km

• M1: 345,122 km (0.094 R)
• M2: 580,589 km (0.081 R)
• M3: 914,941 km (0.116 R)
• M4: 1,137,093 km (0.104 R)
• M5: 1,205,759 km (0.117 R)
• M6: 1,318,705 km (0.066 R)
• M7: 1,510,041 km (0.108 R)
• M8: 2,257,881 km (0.097 R)
• M9: 2,416,305 km (0.064 R)
• M10: 2,578,469 km (0.063 R)
• M11: 2,725,524 km (0.073 R)
• M12: 3,361,763 km (0.111 R)
• M13: 3,442,097 km (0.044 R)
• M14: 3,769,268 km (0.112 R)
• M15: 3,831,800 km (0.09 R)
• M16: 4,564,231 km (0.058 R)
• M17: 4,810,469 km (0.074 R)
• M18: 5,246,098 km (0.075 R)
• M19: 5,433,245 km (0.078 R)
• M20: 5,790,186 km (0.107 R)
• M21: 5,935,146 km (0.084 R)
• M22: 6,032,534 km (0.09 R)
• M23: 6,476,989 km (0.116 R)
• M24: 6,577,070 km (0.116 R)
• M25: 6,753,745 km (0.087 R)
• M26: 6,906,485 km (0.11 R)
• M27: 7,397,316 km (0.106 R)
• M28: 7,660,309 km (0.114 R)
• M29: 7,766,373 km (0.102 R)
• M30: 8,033,705 km (0.116 R)
• M31: 8,494,915 km (0.083 R)
• M32: 8,825,826 km (0.093 R)
• M33: 9,104,826 km (0.043 R)
• M34: 9,500,213 km (0.072 R)
• M35: 9,843,540 km (0.052 R)
• M36: 9,930,007 km (0.101 R)
• M37: 10,425,027 km (0.089 R)
• M38: 11,167,331 km (0.075 R)
• M39: 11,469,070 km (0.068 R)
• M40: 11,742,984 km (0.069 R)
• M41: 12,546,325 km (0.102 R)
• M42: 12,608,857 km (0.099 R)
• M43: 12,797,051 km (0.097 R)
• M44: 12,860,031 km (0.093 R)
• M45: 13,112,852 km (0.114 R)
• M46: 13,431,196 km (0.103 R)
• M47: 13,881,186 km (0.054 R)
• M48: 14,075,514 km (0.045 R)
• M49: 14,205,664 km (0.115 R)
• M50: 15,027,705 km (0.047 R)
• M51: 15,797,535 km (0.101 R)
• M52: 16,170,333 km (0.104 R)
• M53: 16,443,200 km (0.095 R)
• M54: 17,236,367 km (0.086 R)
• M55: 17,585,080 km (0.093 R)
• M56: 17,760,409 km (0.114 R)
• M57: 18,218,777 km (0.053 R)
• M58: 18,431,654 km (0.084 R)
• M59: 19,653,420 km (0.109 R)
• M60: 20,090,844 km (0.079 R)
• M61: 20,790,065 km (0.113 R)
• M62: 22,250,140 km (0.105 R)
• M63: 22,325,837 km (0.11 R)
• M64: 22,401,683 km (0.117 R)
• M65: 22,705,965 km (0.046 R)
• M66: 22,820,557 km (0.093 R)
• M67: 23,318,718 km (0.078 R)
• M68: 23,549,846 km (0.067 R)
• M69: 24,053,243 km (0.102 R)
• M70: 24,677,814 km (0.053 R)
• M71: 24,952,775 km (0.118 R)
• M72: 25,268,128 km (0.098 R)
• M73: 26,182,320 km (0.103 R)
• M74: 26,462,667 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 477.6

Radius: 11.5

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 6.42 AU - 7.1 AU

Year: 6518 Days

Day: 10 Hours

Environment

Temp: -158 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 33,572,980 km

• M1: 796,309 km (0.104 R)
• M2: 917,484 km (0.051 R)
• M3: 1,089,222 km (0.107 R)
• M4: 1,367,325 km (0.114 R)
• M5: 1,668,615 km (0.036 R)
• M6: 1,935,796 km (0.072 R)
• M7: 2,065,348 km (0.086 R)
• M8: 2,353,025 km (0.115 R)
• M9: 2,451,760 km (0.049 R)
• M10: 2,572,186 km (0.113 R)
• M11: 2,674,212 km (0.118 R)
• M12: 2,798,228 km (0.096 R)
• M13: 3,117,171 km (0.101 R)
• M14: 3,813,100 km (0.104 R)
• M15: 3,929,936 km (0.096 R)
• M16: 4,263,240 km (0.086 R)
• M17: 4,680,319 km (0.088 R)
• M18: 4,830,814 km (0.112 R)
• M19: 5,740,070 km (0.065 R)
• M20: 6,091,177 km (0.094 R)
• M21: 6,366,137 km (0.026 R)
• M22: 6,757,934 km (0.059 R)
• M23: 6,985,323 km (0.091 R)
• M24: 8,039,838 km (0.103 R)
• M25: 8,372,095 km (0.109 R)
• M26: 8,463,350 km (0.043 R)
• M27: 9,018,657 km (0.029 R)
• M28: 9,269,234 km (0.081 R)
• M29: 9,585,783 km (0.081 R)
• M30: 9,841,595 km (0.057 R)
• M31: 9,970,249 km (0.11 R)
• M32: 10,164,427 km (0.064 R)
• M33: 10,294,577 km (0.105 R)
• M34: 10,655,408 km (0.107 R)
• M35: 10,820,713 km (0.107 R)
• M36: 12,765,635 km (0.084 R)
• M37: 12,870,952 km (0.102 R)
• M38: 13,509,137 km (0.074 R)
• M39: 13,616,398 km (0.117 R)
• M40: 13,688,205 km (0.037 R)
• M41: 14,084,939 km (0.098 R)
• M42: 14,230,198 km (0.056 R)
• M43: 14,632,168 km (0.119 R)
• M44: 14,816,024 km (0.105 R)
• M45: 15,597,074 km (0.063 R)
• M46: 15,973,612 km (0.091 R)
• M47: 16,125,154 km (0.11 R)
• M48: 16,239,148 km (0.093 R)
• M49: 16,774,260 km (0.036 R)
• M50: 17,237,714 km (0.083 R)
• M51: 17,980,018 km (0.086 R)
• M52: 18,058,857 km (0.03 R)
• M53: 18,256,176 km (0.108 R)
• M54: 18,693,002 km (0.074 R)
• M55: 18,892,565 km (0.036 R)
• M56: 19,294,086 km (0.081 R)
• M57: 19,455,502 km (0.062 R)
• M58: 19,698,449 km (0.05 R)
• M59: 20,023,825 km (0.093 R)
• M60: 20,474,264 km (0.114 R)
• M61: 20,597,682 km (0.07 R)
• M62: 20,762,688 km (0.078 R)
• M63: 20,886,705 km (0.12 R)
• M64: 21,426,903 km (0.113 R)
• M65: 22,436,389 km (0.074 R)
• M66: 22,733,640 km (0.067 R)
• M67: 23,032,387 km (0.066 R)
• M68: 23,289,397 km (0.06 R)
• M69: 23,375,266 km (0.108 R)
• M70: 23,504,219 km (0.119 R)
• M71: 23,892,725 km (0.1 R)
• M72: 24,022,725 km (0.084 R)
• M73: 24,983,144 km (0.116 R)
• M74: 25,159,071 km (0.096 R)
• M75: 26,045,139 km (0.09 R)
• M76: 26,312,919 km (0.075 R)
• M77: 26,536,717 km (0.097 R)
• M78: 26,986,409 km (0.087 R)
• M79: 27,438,493 km (0.116 R)
• M80: 28,258,739 km (0.059 R)
• M81: 28,717,854 km (0.106 R)
• M82: 28,810,007 km (0.088 R)
• M83: 29,040,687 km (0.108 R)
• M84: 29,923,164 km (0.089 R)
• M85: 30,438,080 km (0.081 R)
• M86: 30,532,028 km (0.099 R)
• M87: 31,287,048 km (0.116 R)

Asteroid Belt

Center: 7.02 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 786.5

Radius: 14.5

Gravity: 3.74 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 7.27 AU - 7.29 AU

Year: 7285 Days

Day: 9.5 Hours

Environment

Temp: -168 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 33,572,980 km

• M1: 226,940 km (0.036 R)
• M2: 456,722 km (0.072 R)
• M3: 619,186 km (0.103 R)
• M4: 716,424 km (0.112 R)
• M5: 897,737 km (0.1 R)
• M6: 1,165,218 km (0.116 R)
• M7: 1,309,281 km (0.117 R)
• M8: 1,537,118 km (0.119 R)
• M9: 1,904,231 km (0.119 R)
• M10: 2,142,541 km (0.082 R)
• M11: 2,254,290 km (0.093 R)
• M12: 2,391,023 km (0.111 R)
• M13: 2,941,244 km (0.094 R)
• M14: 3,116,572 km (0.081 R)
• M15: 3,717,657 km (0.084 R)
• M16: 4,045,725 km (0.059 R)
• M17: 4,584,576 km (0.068 R)
• M18: 5,824,443 km (0.045 R)
• M19: 6,110,175 km (0.084 R)
• M20: 6,629,280 km (0.048 R)
• M21: 7,572,195 km (0.106 R)
• M22: 8,413,833 km (0.1 R)
• M23: 8,665,008 km (0.077 R)
• M24: 9,359,142 km (0.109 R)
• M25: 10,995,743 km (0.038 R)
• M26: 11,231,210 km (0.051 R)
• M27: 12,270,466 km (0.096 R)
• M28: 12,514,759 km (0.072 R)
• M29: 12,678,569 km (0.092 R)
• M30: 12,966,695 km (0.089 R)
• M31: 13,424,165 km (0.109 R)
• M32: 13,549,827 km (0.111 R)
• M33: 13,886,871 km (0.118 R)
• M34: 14,141,487 km (0.084 R)
• M35: 14,784,758 km (0.054 R)
• M36: 14,914,609 km (0.12 R)
• M37: 15,088,292 km (0.083 R)
• M38: 15,922,449 km (0.071 R)
• M39: 16,726,538 km (0.11 R)
• M40: 16,952,281 km (0.075 R)
• M41: 17,819,350 km (0.077 R)
• M42: 18,049,881 km (0.1 R)
• M43: 18,607,282 km (0.051 R)
• M44: 18,747,605 km (0.119 R)
• M45: 19,029,148 km (0.049 R)
• M46: 19,882,305 km (0.079 R)
• M47: 20,844,818 km (0.099 R)
• M48: 21,576,650 km (0.084 R)
• M49: 21,724,004 km (0.082 R)
• M50: 22,168,160 km (0.108 R)
• M51: 22,466,010 km (0.084 R)
• M52: 22,565,642 km (0.081 R)
• M53: 22,965,368 km (0.055 R)
• M54: 25,102,224 km (0.067 R)
• M55: 25,776,461 km (0.113 R)
• M56: 25,985,001 km (0.066 R)
• M57: 26,194,288 km (0.089 R)
• M58: 27,408,275 km (0.101 R)
• M59: 27,995,297 km (0.109 R)
• M60: 29,236,211 km (0.099 R)
• M61: 30,384,824 km (0.09 R)
• M62: 30,495,077 km (0.091 R)
• M63: 31,381,145 km (0.049 R)
• M64: 31,548,246 km (0.081 R)
• M65: 31,883,345 km (0.105 R)
• M66: 32,107,443 km (0.069 R)
• M67: 32,388,238 km (0.094 R)
• M68: 34,090,064 km (0.076 R)
• M69: 34,606,326 km (0.091 R)
• M70: 36,755,748 km (0.115 R)
• M71: 36,931,974 km (0.087 R)
• M72: 37,757,755 km (0.119 R)
• M73: 38,470,588 km (0.081 R)
• M74: 38,589,818 km (0.099 R)
• M75: 39,127,772 km (0.066 R)
• M76: 39,367,727 km (0.117 R)
• M77: 39,487,854 km (0.114 R)
• M78: 39,909,271 km (0.111 R)
• M79: 40,211,309 km (0.12 R)
• M80: 40,332,334 km (0.055 R)
• M81: 40,514,095 km (0.082 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 610.9

Radius: 4.6

Gravity: 28.87 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 10.17 AU - 16.81 AU

Year: 18375 Days

Day: 18.2 Hours

Environment

Temp: -182 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 33,572,980 km

• M1: 68,516 km (0.091 R)
• M2: 116,238 km (0.048 R)
• M3: 267,631 km (0.1 R)
• M4: 569,519 km (0.084 R)
• M5: 610,509 km (0.112 R)
• M6: 739,462 km (0.119 R)
• M7: 1,048,382 km (0.118 R)
• M8: 1,256,622 km (0.054 R)
• M9: 1,393,355 km (0.062 R)
• M10: 1,987,109 km (0.108 R)
• M11: 2,376,661 km (0.081 R)
• M12: 2,477,790 km (0.033 R)
• M13: 2,614,821 km (0.115 R)
• M14: 2,825,006 km (0.057 R)
• M15: 3,564,169 km (0.079 R)
• M16: 3,679,958 km (0.119 R)
• M17: 4,196,071 km (0.09 R)
• M18: 4,318,442 km (0.12 R)
• M19: 5,207,203 km (0.063 R)
• M20: 5,471,243 km (0.052 R)
• M21: 6,058,265 km (0.043 R)
• M22: 6,476,391 km (0.026 R)
• M23: 6,570,488 km (0.063 R)
• M24: 7,096,624 km (0.034 R)
• M25: 7,242,332 km (0.078 R)
• M26: 7,340,169 km (0.101 R)
• M27: 7,389,237 km (0.094 R)
• M28: 8,087,261 km (0.092 R)
• M29: 8,495,513 km (0.067 R)
• M30: 10,085,140 km (0.067 R)
• M31: 10,304,002 km (0.062 R)
• M32: 10,913,613 km (0.085 R)
• M33: 10,969,713 km (0.092 R)
• M34: 13,287,133 km (0.075 R)
• M35: 13,406,812 km (0.114 R)
• M36: 17,948,304 km (0.031 R)
• M37: 18,479,825 km (0.106 R)
• M38: 19,762,477 km (0.115 R)
• M39: 21,003,840 km (0.096 R)
• M40: 21,915,938 km (0.054 R)
• M41: 22,057,458 km (0.068 R)
• M42: 22,270,336 km (0.108 R)
• M43: 22,412,454 km (0.057 R)
• M44: 22,483,662 km (0.092 R)
• M45: 22,912,709 km (0.073 R)
• M46: 24,069,849 km (0.118 R)
• M47: 24,950,082 km (0.109 R)
• M48: 25,542,789 km (0.105 R)
• M49: 25,691,639 km (0.051 R)
• M50: 26,215,082 km (0.064 R)
• M51: 26,290,031 km (0.083 R)
• M52: 27,348,436 km (0.093 R)
• M53: 27,806,205 km (0.094 R)
• M54: 28,189,624 km (0.067 R)
• M55: 28,343,561 km (0.069 R)
• M56: 28,497,646 km (0.114 R)
• M57: 29,584,475 km (0.082 R)
• M58: 29,975,973 km (0.104 R)
• M59: 30,133,050 km (0.092 R)
• M60: 30,763,905 km (0.092 R)
• M61: 30,922,329 km (0.093 R)
• M62: 32,440,747 km (0.091 R)
• M63: 34,229,040 km (0.105 R)
• M64: 35,218,032 km (0.069 R)
• M65: 35,383,636 km (0.096 R)
• M66: 36,132,673 km (0.109 R)
• M67: 37,985,293 km (0.076 R)
• M68: 38,752,132 km (0.053 R)
• M69: 38,923,272 km (0.073 R)
• M70: 39,868,730 km (0.039 R)
• M71: 40,300,918 km (0.082 R)
• M72: 41,170,082 km (0.087 R)
• M73: 41,519,543 km (0.115 R)
• M74: 42,661,872 km (0.054 R)
• M75: 42,750,135 km (0.056 R)
• M76: 42,926,959 km (0.068 R)
• M77: 43,458,780 km (0.116 R)
• M78: 43,903,534 km (0.118 R)
• M79: 48,526,258 km (0.106 R)
• M80: 48,987,768 km (0.102 R)
• M81: 49,080,219 km (0.106 R)
• M82: 49,543,374 km (0.105 R)
• M83: 54,063,324 km (0.116 R)
• M84: 55,213,732 km (0.083 R)
• M85: 56,760,125 km (0.108 R)
• M86: 57,343,706 km (0.107 R)
• M87: 57,733,857 km (0.068 R)
• M88: 58,124,906 km (0.044 R)
• M89: 59,204,704 km (0.116 R)
• M90: 59,599,044 km (0.12 R)
• M91: 60,390,267 km (0.11 R)
• M92: 62,584,120 km (0.05 R)
• M93: 63,186,849 km (0.115 R)
• M94: 68,698,185 km (0.103 R)
• M95: 69,216,242 km (0.085 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 39.3

Radius: 4

Gravity: 2.46 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 15.63 AU - 17.03 AU

Year: 24473 Days

Day: 23.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 33,572,980 km

• M1: 55,202 km (0.108 R)
• M2: 259,852 km (0.119 R)
• M3: 307,872 km (0.06 R)
• M4: 657,333 km (0.077 R)
• M5: 752,178 km (0.117 R)
• M6: 969,993 km (0.118 R)
• M7: 1,000,511 km (0.058 R)
• M8: 1,078,152 km (0.113 R)
• M9: 1,425,967 km (0.091 R)
• M10: 1,460,674 km (0.116 R)
• M11: 1,531,284 km (0.079 R)
• M12: 1,602,941 km (0.112 R)
• M13: 1,843,495 km (0.07 R)
• M14: 2,155,107 km (0.052 R)
• M15: 2,255,786 km (0.101 R)
• M16: 2,652,669 km (0.112 R)
• M17: 3,966,588 km (0.092 R)
• M18: 4,215,070 km (0.037 R)
• M19: 5,016,615 km (0.062 R)
• M20: 5,366,524 km (0.053 R)
• M21: 6,118,104 km (0.053 R)
• M22: 6,433,606 km (0.081 R)
• M23: 6,725,172 km (0.105 R)
• M24: 6,961,387 km (0.116 R)
• M25: 6,991,157 km (0.111 R)
• M26: 7,050,697 km (0.089 R)
• M27: 7,351,239 km (0.089 R)
• M28: 7,381,458 km (0.054 R)
• M29: 7,594,486 km (0.062 R)
• M30: 8,562,384 km (0.118 R)
• M31: 8,754,168 km (0.098 R)
• M32: 9,634,552 km (0.083 R)
• M33: 10,169,364 km (0.073 R)
• M34: 10,270,791 km (0.118 R)
• M35: 11,302,718 km (0.085 R)
• M36: 12,331,203 km (0.052 R)
• M37: 14,628,278 km (0.105 R)
• M38: 14,819,165 km (0.099 R)
• M39: 15,010,950 km (0.117 R)
• M40: 15,474,404 km (0.087 R)
• M41: 16,375,881 km (0.077 R)
• M42: 16,892,891 km (0.119 R)
• M43: 16,932,833 km (0.064 R)
• M44: 17,739,316 km (0.052 R)
• M45: 19,180,392 km (0.081 R)
• M46: 19,809,451 km (0.109 R)
• M47: 21,606,420 km (0.116 R)
• M48: 23,143,090 km (0.108 R)
• M49: 23,187,520 km (0.06 R)
• M50: 24,217,203 km (0.113 R)
• M51: 25,766,288 km (0.1 R)
• M52: 25,904,517 km (0.054 R)
• M53: 27,019,021 km (0.039 R)
• M54: 28,291,650 km (0.071 R)
• M55: 29,294,704 km (0.112 R)
• M56: 31,828,443 km (0.112 R)
• M57: 33,522,639 km (0.103 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 172 - 17,744 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit