Star System Generated (Seed: 1768453848)
Star Details
Spectral Class: K5V
Temperature: 4,343 K
Mass: 0.69 sol
Luminosity: 0.27 lux
Habitable Zone (HZ)
Inner Boundary: 0.5 AU
Outer Boundary: 0.71 AU
Physical Limits
Snow Line: 2.49 AU
Max System Radius: 16.6 AU
Planetary System (9 Planets)
Planet 1 - Terrestrial
Semi-Major Axis: 0.55 AU
Status: HZ
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 4.32
Radius: 1.8
Gravity: 1.33 G
Time & Orbit
Eccentricity (e): 0.03
Orbit Range: 0.53 AU - 0.57 AU
Year: 179 Days
Day: 15.1 Hours
Environment
Temp: 20 °C
Axial Tilt: 33.1 °
Atmosphere: Nâ‚‚, Oâ‚‚
Biome: Arid/Tundra
Planet 2 - Terrestrial
Semi-Major Axis: 0.81 AU
Status: Outer (Cold)
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 2.12
Radius: 1.35
Gravity: 1.16 G
Time & Orbit
Eccentricity (e): 0.231
Orbit Range: 0.62 AU - 1 AU
Year: 321 Days
Day: 12.2 Hours
Environment
Temp: -30 °C
Axial Tilt: 25.7 °
Atmosphere: Thin Nâ‚‚/CHâ‚„
Biome: Ice Cap/Desert
Planet 3 - Terrestrial
Semi-Major Axis: 0.97 AU
Status: Outer (Cold)
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 0.22
Radius: 0.55
Gravity: 0.73 G
Time & Orbit
Eccentricity (e): 0.093
Orbit Range: 0.88 AU - 1.06 AU
Year: 420 Days
Day: 21.6 Hours
Environment
Temp: -68 °C
Axial Tilt: 21.9 °
Atmosphere: Thin Nâ‚‚/CHâ‚„
Biome: Ice Cap/Desert
Planet 4 - Terrestrial
Semi-Major Axis: 2.16 AU
Status: Outer (Cold)
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 3.73
Radius: 1.69
Gravity: 1.31 G
Time & Orbit
Eccentricity (e): 0.085
Orbit Range: 1.98 AU - 2.34 AU
Year: 1396 Days
Day: 26.4 Hours
Environment
Temp: -130 °C
Axial Tilt: 21.1 °
Atmosphere: Thin Nâ‚‚/CHâ‚„
Biome: Ice Cap/Desert
Satellites (2)
Outer Limit: 41,174,393 km
- M1: 127,457 km (0.112 R)
- M2: 218,263 km (0.092 R)
Planet 5 - Gas Giant
Semi-Major Axis: 2.72 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 396.6
Radius: 10.4
Gravity: 3.67 G
Time & Orbit
Eccentricity (e): 0.001
Orbit Range: 2.72 AU - 2.72 AU
Year: 1973 Days
Day: 11.5 Hours
Environment
Temp: -132 °C
Axial Tilt: 17.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (67)
Outer Limit: 41,174,393 km
- M1: 220,956 km (0.085 R)
- M2: 331,359 km (0.095 R)
- M3: 415,882 km (0.083 R)
- M4: 497,413 km (0.096 R)
- M5: 645,365 km (0.105 R)
- M6: 750,533 km (0.108 R)
- M7: 955,482 km (0.086 R)
- M8: 1,060,799 km (0.062 R)
- M9: 1,136,196 km (0.094 R)
- M10: 1,328,579 km (0.109 R)
- M11: 1,503,459 km (0.11 R)
- M12: 1,569,880 km (0.106 R)
- M13: 1,676,394 km (0.071 R)
- M14: 1,745,358 km (0.101 R)
- M15: 1,855,911 km (0.112 R)
- M16: 2,073,426 km (0.091 R)
- M17: 2,180,090 km (0.099 R)
- M18: 2,277,628 km (0.039 R)
- M19: 2,354,521 km (0.074 R)
- M20: 2,567,847 km (0.036 R)
- M21: 2,764,120 km (0.095 R)
- M22: 3,086,054 km (0.073 R)
- M23: 3,208,276 km (0.095 R)
- M24: 3,369,842 km (0.073 R)
- M25: 3,508,668 km (0.114 R)
- M26: 3,818,037 km (0.061 R)
- M27: 4,109,603 km (0.081 R)
- M28: 4,518,753 km (0.058 R)
- M29: 4,602,229 km (0.117 R)
- M30: 4,700,215 km (0.106 R)
- M31: 4,841,436 km (0.038 R)
- M32: 5,288,135 km (0.114 R)
- M33: 5,390,909 km (0.044 R)
- M34: 5,823,546 km (0.111 R)
- M35: 6,005,906 km (0.077 R)
- M36: 6,252,144 km (0.1 R)
- M37: 6,501,523 km (0.112 R)
- M38: 6,611,777 km (0.027 R)
- M39: 6,754,344 km (0.059 R)
- M40: 6,849,937 km (0.114 R)
- M41: 6,929,972 km (0.113 R)
- M42: 7,074,783 km (0.059 R)
- M43: 7,204,484 km (0.085 R)
- M44: 7,914,625 km (0.076 R)
- M45: 7,998,699 km (0.115 R)
- M46: 8,066,168 km (0.11 R)
- M47: 8,509,276 km (0.106 R)
- M48: 8,716,470 km (0.071 R)
- M49: 8,960,314 km (0.082 R)
- M50: 9,065,481 km (0.093 R)
- M51: 9,419,131 km (0.036 R)
- M52: 9,579,799 km (0.112 R)
- M53: 9,723,263 km (0.08 R)
- M54: 10,012,585 km (0.106 R)
- M55: 10,121,792 km (0.111 R)
- M56: 10,194,796 km (0.082 R)
- M57: 10,341,402 km (0.08 R)
- M58: 10,562,657 km (0.091 R)
- M59: 10,729,458 km (0.09 R)
- M60: 10,822,658 km (0.1 R)
- M61: 10,934,707 km (0.087 R)
- M62: 11,577,230 km (0.091 R)
- M63: 11,941,650 km (0.046 R)
- M64: 12,018,992 km (0.079 R)
- M65: 12,309,960 km (0.095 R)
- M66: 13,097,294 km (0.089 R)
- M67: 13,477,123 km (0.111 R)
Planet 6 - Gas Giant
Semi-Major Axis: 4.67 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 872.3
Radius: 10.7
Gravity: 7.62 G
Time & Orbit
Eccentricity (e): 0.118
Orbit Range: 4.12 AU - 5.22 AU
Year: 4438 Days
Day: 8.6 Hours
Environment
Temp: -161 °C
Axial Tilt: 35.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (79)
Outer Limit: 41,174,393 km
- M1: 163,211 km (0.082 R)
- M2: 231,278 km (0.059 R)
- M3: 449,542 km (0.031 R)
- M4: 564,283 km (0.115 R)
- M5: 826,827 km (0.107 R)
- M6: 932,144 km (0.114 R)
- M7: 1,084,734 km (0.076 R)
- M8: 1,261,110 km (0.085 R)
- M9: 1,337,405 km (0.106 R)
- M10: 1,592,769 km (0.094 R)
- M11: 1,692,550 km (0.114 R)
- M12: 1,777,522 km (0.089 R)
- M13: 2,131,770 km (0.086 R)
- M14: 2,242,322 km (0.078 R)
- M15: 2,508,307 km (0.116 R)
- M16: 2,724,327 km (0.108 R)
- M17: 3,154,122 km (0.098 R)
- M18: 4,053,803 km (0.088 R)
- M19: 4,215,070 km (0.027 R)
- M20: 4,308,269 km (0.115 R)
- M21: 4,402,067 km (0.046 R)
- M22: 4,496,613 km (0.1 R)
- M23: 4,615,693 km (0.116 R)
- M24: 5,003,899 km (0.072 R)
- M25: 5,504,154 km (0.049 R)
- M26: 5,889,818 km (0.074 R)
- M27: 6,310,936 km (0.11 R)
- M28: 6,417,749 km (0.098 R)
- M29: 6,741,927 km (0.086 R)
- M30: 7,210,169 km (0.041 R)
- M31: 7,321,918 km (0.079 R)
- M32: 7,490,665 km (0.057 R)
- M33: 7,860,620 km (0.091 R)
- M34: 8,382,717 km (0.101 R)
- M35: 8,470,830 km (0.044 R)
- M36: 8,707,494 km (0.082 R)
- M37: 8,916,183 km (0.102 R)
- M38: 10,328,985 km (0.1 R)
- M39: 11,157,907 km (0.038 R)
- M40: 11,352,384 km (0.092 R)
- M41: 11,613,283 km (0.1 R)
- M42: 12,240,846 km (0.045 R)
- M43: 12,508,476 km (0.113 R)
- M44: 12,811,711 km (0.085 R)
- M45: 13,015,314 km (0.104 R)
- M46: 13,460,068 km (0.097 R)
- M47: 14,399,842 km (0.118 R)
- M48: 14,505,608 km (0.109 R)
- M49: 14,788,797 km (0.053 R)
- M50: 14,859,856 km (0.042 R)
- M51: 15,540,825 km (0.118 R)
- M52: 15,794,244 km (0.047 R)
- M53: 15,976,155 km (0.118 R)
- M54: 16,231,967 km (0.09 R)
- M55: 16,489,276 km (0.095 R)
- M56: 16,784,881 km (0.058 R)
- M57: 16,933,282 km (0.057 R)
- M58: 17,007,632 km (0.107 R)
- M59: 17,456,276 km (0.112 R)
- M60: 17,682,020 km (0.041 R)
- M61: 17,946,808 km (0.116 R)
- M62: 18,941,185 km (0.115 R)
- M63: 19,057,123 km (0.092 R)
- M64: 19,406,285 km (0.106 R)
- M65: 20,032,052 km (0.056 R)
- M66: 20,229,073 km (0.039 R)
- M67: 20,744,138 km (0.094 R)
- M68: 22,601,396 km (0.072 R)
- M69: 23,218,338 km (0.12 R)
- M70: 23,508,258 km (0.087 R)
- M71: 24,049,802 km (0.08 R)
- M72: 25,998,614 km (0.064 R)
- M73: 26,299,605 km (0.046 R)
- M74: 26,558,559 km (0.104 R)
- M75: 27,427,872 km (0.105 R)
- M76: 27,865,895 km (0.06 R)
- M77: 28,704,690 km (0.093 R)
- M78: 28,837,982 km (0.108 R)
- M79: 29,328,064 km (0.078 R)
Planet 7 - Gas Giant
Semi-Major Axis: 5.8 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 393.9
Radius: 9
Gravity: 4.86 G
Time & Orbit
Eccentricity (e): 0.079
Orbit Range: 5.34 AU - 6.26 AU
Year: 6142 Days
Day: 10.1 Hours
Environment
Temp: -172 °C
Axial Tilt: 2.4 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (80)
Outer Limit: 41,174,393 km
- M1: 122,072 km (0.086 R)
- M2: 211,980 km (0.087 R)
- M3: 341,382 km (0.091 R)
- M4: 609,462 km (0.118 R)
- M5: 736,919 km (0.098 R)
- M6: 1,130,212 km (0.111 R)
- M7: 2,017,327 km (0.069 R)
- M8: 2,122,794 km (0.095 R)
- M9: 2,450,563 km (0.085 R)
- M10: 2,620,356 km (0.077 R)
- M11: 2,677,951 km (0.108 R)
- M12: 2,774,741 km (0.098 R)
- M13: 3,235,204 km (0.046 R)
- M14: 3,297,137 km (0.104 R)
- M15: 3,463,939 km (0.076 R)
- M16: 3,806,219 km (0.103 R)
- M17: 3,871,593 km (0.11 R)
- M18: 4,204,149 km (0.106 R)
- M19: 4,271,767 km (0.109 R)
- M20: 4,920,573 km (0.053 R)
- M21: 5,087,674 km (0.067 R)
- M22: 5,501,162 km (0.091 R)
- M23: 6,001,418 km (0.088 R)
- M24: 6,231,350 km (0.098 R)
- M25: 6,779,177 km (0.034 R)
- M26: 7,698,755 km (0.114 R)
- M27: 7,809,458 km (0.12 R)
- M28: 8,088,757 km (0.044 R)
- M29: 8,229,528 km (0.053 R)
- M30: 8,456,618 km (0.058 R)
- M31: 8,975,124 km (0.113 R)
- M32: 9,296,909 km (0.083 R)
- M33: 10,012,436 km (0.093 R)
- M34: 10,254,934 km (0.087 R)
- M35: 10,346,338 km (0.104 R)
- M36: 10,407,524 km (0.061 R)
- M37: 10,776,582 km (0.061 R)
- M38: 11,275,491 km (0.083 R)
- M39: 11,527,713 km (0.089 R)
- M40: 11,909,636 km (0.091 R)
- M41: 12,037,991 km (0.036 R)
- M42: 12,620,675 km (0.071 R)
- M43: 12,882,621 km (0.103 R)
- M44: 13,014,267 km (0.048 R)
- M45: 13,312,116 km (0.055 R)
- M46: 13,880,887 km (0.082 R)
- M47: 14,015,974 km (0.066 R)
- M48: 14,423,479 km (0.04 R)
- M49: 14,800,615 km (0.087 R)
- M50: 15,215,599 km (0.104 R)
- M51: 16,662,510 km (0.054 R)
- M52: 17,238,911 km (0.115 R)
- M53: 17,493,227 km (0.057 R)
- M54: 18,042,251 km (0.101 R)
- M55: 18,226,556 km (0.072 R)
- M56: 18,374,358 km (0.088 R)
- M57: 18,485,659 km (0.088 R)
- M58: 19,232,452 km (0.09 R)
- M59: 19,496,193 km (0.107 R)
- M60: 19,609,588 km (0.07 R)
- M61: 19,723,133 km (0.117 R)
- M62: 20,524,678 km (0.069 R)
- M63: 20,678,465 km (0.072 R)
- M64: 20,755,508 km (0.076 R)
- M65: 20,871,297 km (0.112 R)
- M66: 21,142,368 km (0.055 R)
- M67: 21,962,463 km (0.096 R)
- M68: 22,119,840 km (0.116 R)
- M69: 23,272,043 km (0.035 R)
- M70: 23,875,671 km (0.078 R)
- M71: 24,240,390 km (0.106 R)
- M72: 25,180,613 km (0.113 R)
- M73: 25,345,320 km (0.085 R)
- M74: 26,216,129 km (0.085 R)
- M75: 26,508,593 km (0.111 R)
- M76: 26,634,255 km (0.103 R)
- M77: 27,392,417 km (0.092 R)
- M78: 27,646,734 km (0.12 R)
- M79: 27,816,677 km (0.045 R)
- M80: 28,628,844 km (0.041 R)
Planet 8 - Gas Giant
Semi-Major Axis: 6.52 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 158
Radius: 9.8
Gravity: 1.65 G
Time & Orbit
Eccentricity (e): 0.108
Orbit Range: 5.82 AU - 7.22 AU
Year: 7320 Days
Day: 14.7 Hours
Environment
Temp: -184 °C
Axial Tilt: 32.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (79)
Outer Limit: 41,174,393 km
- M1: 122,670 km (0.098 R)
- M2: 277,354 km (0.107 R)
- M3: 453,730 km (0.105 R)
- M4: 689,945 km (0.071 R)
- M5: 828,473 km (0.089 R)
- M6: 988,543 km (0.098 R)
- M7: 1,097,001 km (0.049 R)
- M8: 1,714,092 km (0.109 R)
- M9: 2,183,231 km (0.097 R)
- M10: 2,375,315 km (0.104 R)
- M11: 2,473,601 km (0.066 R)
- M12: 2,691,116 km (0.116 R)
- M13: 2,862,705 km (0.106 R)
- M14: 3,454,664 km (0.048 R)
- M15: 3,831,650 km (0.075 R)
- M16: 3,966,887 km (0.062 R)
- M17: 4,563,932 km (0.027 R)
- M18: 4,645,612 km (0.112 R)
- M19: 4,727,891 km (0.116 R)
- M20: 5,019,607 km (0.107 R)
- M21: 5,146,466 km (0.06 R)
- M22: 5,274,372 km (0.102 R)
- M23: 5,533,476 km (0.106 R)
- M24: 5,642,532 km (0.051 R)
- M25: 5,885,330 km (0.118 R)
- M26: 6,064,099 km (0.084 R)
- M27: 6,176,597 km (0.045 R)
- M28: 6,267,253 km (0.03 R)
- M29: 6,403,986 km (0.06 R)
- M30: 6,680,443 km (0.111 R)
- M31: 7,031,549 km (0.101 R)
- M32: 7,412,724 km (0.064 R)
- M33: 7,630,090 km (0.081 R)
- M34: 8,445,099 km (0.12 R)
- M35: 8,646,907 km (0.092 R)
- M36: 8,978,116 km (0.095 R)
- M37: 9,080,890 km (0.111 R)
- M38: 9,209,993 km (0.109 R)
- M39: 9,600,743 km (0.118 R)
- M40: 9,785,047 km (0.099 R)
- M41: 10,076,913 km (0.069 R)
- M42: 10,317,765 km (0.112 R)
- M43: 11,162,245 km (0.104 R)
- M44: 11,803,122 km (0.096 R)
- M45: 11,915,770 km (0.085 R)
- M46: 12,000,592 km (0.091 R)
- M47: 12,199,108 km (0.107 R)
- M48: 12,541,986 km (0.094 R)
- M49: 12,743,495 km (0.037 R)
- M50: 12,888,006 km (0.037 R)
- M51: 13,442,416 km (0.118 R)
- M52: 13,648,562 km (0.08 R)
- M53: 13,826,134 km (0.042 R)
- M54: 14,423,778 km (0.101 R)
- M55: 14,514,135 km (0.117 R)
- M56: 14,725,666 km (0.103 R)
- M57: 15,060,167 km (0.12 R)
- M58: 15,274,391 km (0.112 R)
- M59: 15,767,765 km (0.074 R)
- M60: 16,235,109 km (0.051 R)
- M61: 17,024,088 km (0.117 R)
- M62: 17,728,844 km (0.087 R)
- M63: 17,793,320 km (0.119 R)
- M64: 18,639,446 km (0.117 R)
- M65: 19,034,384 km (0.116 R)
- M66: 19,966,529 km (0.103 R)
- M67: 20,067,358 km (0.105 R)
- M68: 20,641,514 km (0.095 R)
- M69: 20,879,524 km (0.098 R)
- M70: 21,358,238 km (0.113 R)
- M71: 21,426,903 km (0.049 R)
- M72: 21,702,462 km (0.107 R)
- M73: 21,875,248 km (0.057 R)
- M74: 22,083,189 km (0.073 R)
- M75: 22,466,010 km (0.119 R)
- M76: 22,570,878 km (0.091 R)
- M77: 23,344,598 km (0.095 R)
- M78: 23,486,118 km (0.067 R)
- M79: 23,663,541 km (0.119 R)
Planet 9 - Gas Giant
Semi-Major Axis: 8.38 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 381.6
Radius: 13.1
Gravity: 2.22 G
Time & Orbit
Eccentricity (e): 0.13
Orbit Range: 7.29 AU - 9.47 AU
Year: 10667 Days
Day: 6 Hours
Environment
Temp: -188 °C
Axial Tilt: 33.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (83)
Outer Limit: 41,174,393 km
- M1: 166,652 km (0.103 R)
- M2: 431,440 km (0.034 R)
- M3: 607,816 km (0.059 R)
- M4: 706,401 km (0.11 R)
- M5: 796,010 km (0.059 R)
- M6: 1,125,874 km (0.105 R)
- M7: 1,700,180 km (0.03 R)
- M8: 1,889,122 km (0.113 R)
- M9: 1,975,440 km (0.056 R)
- M10: 2,174,555 km (0.084 R)
- M11: 2,265,361 km (0.078 R)
- M12: 2,545,408 km (0.098 R)
- M13: 2,911,623 km (0.046 R)
- M14: 3,037,585 km (0.105 R)
- M15: 3,452,719 km (0.084 R)
- M16: 3,913,929 km (0.077 R)
- M17: 3,997,405 km (0.105 R)
- M18: 4,109,603 km (0.084 R)
- M19: 4,627,810 km (0.107 R)
- M20: 5,662,878 km (0.081 R)
- M21: 6,700,638 km (0.043 R)
- M22: 7,310,100 km (0.05 R)
- M23: 7,482,586 km (0.032 R)
- M24: 7,691,425 km (0.098 R)
- M25: 7,831,748 km (0.113 R)
- M26: 8,221,899 km (0.098 R)
- M27: 8,437,470 km (0.091 R)
- M28: 8,654,835 km (0.101 R)
- M29: 8,984,549 km (0.099 R)
- M30: 9,132,352 km (0.111 R)
- M31: 9,807,636 km (0.092 R)
- M32: 10,151,412 km (0.051 R)
- M33: 10,616,063 km (0.055 R)
- M34: 10,890,276 km (0.112 R)
- M35: 11,008,459 km (0.067 R)
- M36: 11,206,526 km (0.093 R)
- M37: 11,445,733 km (0.104 R)
- M38: 11,726,977 km (0.108 R)
- M39: 11,848,151 km (0.12 R)
- M40: 12,337,187 km (0.065 R)
- M41: 14,186,815 km (0.083 R)
- M42: 14,359,301 km (0.12 R)
- M43: 14,706,219 km (0.111 R)
- M44: 15,630,135 km (0.119 R)
- M45: 17,073,904 km (0.115 R)
- M46: 17,165,608 km (0.045 R)
- M47: 18,278,317 km (0.05 R)
- M48: 19,749,911 km (0.116 R)
- M49: 20,232,663 km (0.115 R)
- M50: 20,817,292 km (0.115 R)
- M51: 21,160,768 km (0.074 R)
- M52: 21,605,224 km (0.04 R)
- M53: 22,102,786 km (0.067 R)
- M54: 22,704,768 km (0.09 R)
- M55: 23,413,862 km (0.102 R)
- M56: 23,720,089 km (0.104 R)
- M57: 23,976,200 km (0.078 R)
- M58: 24,905,951 km (0.076 R)
- M59: 25,532,317 km (0.089 R)
- M60: 25,637,185 km (0.099 R)
- M61: 26,269,685 km (0.102 R)
- M62: 26,747,351 km (0.118 R)
- M63: 27,765,365 km (0.082 R)
- M64: 28,143,548 km (0.09 R)
- M65: 28,414,769 km (0.039 R)
- M66: 28,686,888 km (0.104 R)
- M67: 28,959,904 km (0.084 R)
- M68: 29,343,473 km (0.089 R)
- M69: 29,618,434 km (0.079 R)
- M70: 30,448,702 km (0.106 R)
- M71: 32,358,767 km (0.058 R)
- M72: 33,672,835 km (0.115 R)
- M73: 34,597,200 km (0.092 R)
- M74: 35,120,793 km (0.051 R)
- M75: 35,529,943 km (0.111 R)
- M76: 36,707,428 km (0.098 R)
- M77: 36,944,391 km (0.104 R)
- M78: 37,837,939 km (0.068 R)
- M79: 38,979,820 km (0.111 R)
- M80: 39,524,655 km (0.118 R)
- M81: 39,706,865 km (0.046 R)
- M82: 40,255,141 km (0.049 R)
- M83: 40,560,770 km (0.034 R)
Kuiper Belt
Range: 30 - 51 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 550 - 18,401 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.