G1V Star System Generated (Seed: 1767327278)
Star Details
Spectral Class: G2V
Temperature: 5,840 K
Mass: 1.06 sol
Luminosity: 1.23 lux
Habitable Zone (HZ)
Inner Boundary: 1.06 AU
Outer Boundary: 1.52 AU
Physical Limits
Snow Line: 5.32 AU
Max System Radius: 20.6 AU
Planetary System (8 Planets)
Planet 1 - Terrestrial
Semi-Major Axis: 1.78 AU
Status: Outer (Cold)
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 2.43
Radius: 1.43
Gravity: 1.19 G
Time & Orbit
Eccentricity (e): 0.044
Orbit Range: 1.7 AU - 1.86 AU
Year: 842 Days
Day: 17.3 Hours
Environment
Temp: -36 °C
Axial Tilt: 44.2 °
Atmosphere: Thin Nâ‚‚/CHâ‚„
Biome: Ice Cap/Desert
Satellites (1)
Outer Limit: 26,747,663 km
- M1: 527,033 km (0.106 R)
Planet 2 - Terrestrial
Semi-Major Axis: 2.08 AU
Status: Outer (Cold)
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 2.7
Radius: 1.49
Gravity: 1.22 G
Time & Orbit
Eccentricity (e): 0.193
Orbit Range: 1.68 AU - 2.48 AU
Year: 1064 Days
Day: 15.5 Hours
Environment
Temp: -70 °C
Axial Tilt: 35.2 °
Atmosphere: Thin Nâ‚‚/CHâ‚„
Biome: Ice Cap/Desert
Planet 3 - Terrestrial
Semi-Major Axis: 2.48 AU
Status: Outer (Cold)
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 1.3
Radius: 1.11
Gravity: 1.06 G
Time & Orbit
Eccentricity (e): 0.124
Orbit Range: 2.17 AU - 2.79 AU
Year: 1386 Days
Day: 31.1 Hours
Environment
Temp: -75 °C
Axial Tilt: 5.2 °
Atmosphere: Thin Nâ‚‚/CHâ‚„
Biome: Ice Cap/Desert
Satellites (1)
Outer Limit: 26,747,663 km
- M1: 1,100,592 km (0.099 R)
Planet 4 - Gas Giant
Semi-Major Axis: 6.31 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 348.9
Radius: 8.1
Gravity: 5.32 G
Time & Orbit
Eccentricity (e): 0.108
Orbit Range: 5.63 AU - 6.99 AU
Year: 5623 Days
Day: 8.2 Hours
Environment
Temp: -153 °C
Axial Tilt: 5.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (82)
Outer Limit: 26,747,663 km
- M1: 222,452 km (0.033 R)
- M2: 324,328 km (0.053 R)
- M3: 482,603 km (0.102 R)
- M4: 581,786 km (0.034 R)
- M5: 802,144 km (0.097 R)
- M6: 885,619 km (0.085 R)
- M7: 997,219 km (0.074 R)
- M8: 1,100,592 km (0.032 R)
- M9: 1,194,090 km (0.053 R)
- M10: 1,418,038 km (0.098 R)
- M11: 1,564,943 km (0.086 R)
- M12: 1,763,310 km (0.108 R)
- M13: 2,151,068 km (0.105 R)
- M14: 2,218,387 km (0.103 R)
- M15: 2,337,766 km (0.05 R)
- M16: 2,744,971 km (0.086 R)
- M17: 2,891,876 km (0.066 R)
- M18: 3,022,475 km (0.104 R)
- M19: 3,193,466 km (0.089 R)
- M20: 3,289,807 km (0.081 R)
- M21: 4,178,717 km (0.088 R)
- M22: 4,541,343 km (0.12 R)
- M23: 4,737,316 km (0.105 R)
- M24: 4,958,421 km (0.089 R)
- M25: 5,070,321 km (0.115 R)
- M26: 5,251,035 km (0.114 R)
- M27: 5,502,958 km (0.071 R)
- M28: 5,642,084 km (0.103 R)
- M29: 5,735,433 km (0.046 R)
- M30: 5,900,140 km (0.083 R)
- M31: 6,549,993 km (0.113 R)
- M32: 6,970,662 km (0.099 R)
- M33: 8,100,126 km (0.089 R)
- M34: 8,152,785 km (0.061 R)
- M35: 8,391,393 km (0.04 R)
- M36: 8,498,057 km (0.113 R)
- M37: 8,551,613 km (0.069 R)
- M38: 8,605,318 km (0.11 R)
- M39: 8,983,951 km (0.055 R)
- M40: 9,451,294 km (0.116 R)
- M41: 9,590,271 km (0.106 R)
- M42: 10,639,251 km (0.083 R)
- M43: 10,754,890 km (0.054 R)
- M44: 11,339,070 km (0.069 R)
- M45: 11,575,734 km (0.095 R)
- M46: 11,635,124 km (0.082 R)
- M47: 11,903,652 km (0.084 R)
- M48: 12,083,918 km (0.089 R)
- M49: 12,477,510 km (0.09 R)
- M50: 12,538,396 km (0.073 R)
- M51: 13,060,193 km (0.113 R)
- M52: 13,370,459 km (0.101 R)
- M53: 13,840,496 km (0.031 R)
- M54: 14,188,460 km (0.09 R)
- M55: 14,283,904 km (0.091 R)
- M56: 14,411,511 km (0.103 R)
- M57: 14,764,412 km (0.072 R)
- M58: 15,250,007 km (0.111 R)
- M59: 15,380,456 km (0.12 R)
- M60: 15,675,314 km (0.067 R)
- M61: 16,038,089 km (0.044 R)
- M62: 16,604,316 km (0.096 R)
- M63: 16,974,122 km (0.107 R)
- M64: 17,585,230 km (0.081 R)
- M65: 17,962,216 km (0.037 R)
- M66: 18,031,031 km (0.105 R)
- M67: 18,549,986 km (0.11 R)
- M68: 18,758,975 km (0.055 R)
- M69: 19,038,872 km (0.116 R)
- M70: 19,249,656 km (0.096 R)
- M71: 20,387,048 km (0.071 R)
- M72: 20,855,439 km (0.08 R)
- M73: 21,509,631 km (0.044 R)
- M74: 21,692,589 km (0.103 R)
- M75: 23,211,905 km (0.063 R)
- M76: 23,700,940 km (0.118 R)
- M77: 24,193,267 km (0.083 R)
- M78: 24,269,263 km (0.076 R)
- M79: 25,419,371 km (0.115 R)
- M80: 25,574,055 km (0.088 R)
- M81: 25,884,471 km (0.064 R)
- M82: 25,962,262 km (0.099 R)
Planet 5 - Gas Giant
Semi-Major Axis: 7.11 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 396.3
Radius: 8.1
Gravity: 6.04 G
Time & Orbit
Eccentricity (e): 0.105
Orbit Range: 6.36 AU - 7.86 AU
Year: 6726 Days
Day: 13.2 Hours
Environment
Temp: -146 °C
Axial Tilt: 31.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (81)
Outer Limit: 26,747,663 km
- M1: 108,458 km (0.091 R)
- M2: 236,365 km (0.103 R)
- M3: 309,518 km (0.107 R)
- M4: 392,395 km (0.117 R)
- M5: 494,870 km (0.094 R)
- M6: 572,511 km (0.094 R)
- M7: 844,779 km (0.103 R)
- M8: 1,052,571 km (0.098 R)
- M9: 1,215,632 km (0.046 R)
- M10: 1,292,526 km (0.115 R)
- M11: 1,386,922 km (0.072 R)
- M12: 1,701,526 km (0.104 R)
- M13: 2,001,769 km (0.117 R)
- M14: 2,111,724 km (0.113 R)
- M15: 2,186,223 km (0.082 R)
- M16: 2,242,771 km (0.119 R)
- M17: 2,454,003 km (0.064 R)
- M18: 2,512,646 km (0.095 R)
- M19: 2,895,766 km (0.118 R)
- M20: 3,104,754 km (0.107 R)
- M21: 3,254,053 km (0.089 R)
- M22: 3,427,736 km (0.073 R)
- M23: 3,671,281 km (0.098 R)
- M24: 4,059,039 km (0.056 R)
- M25: 4,175,576 km (0.038 R)
- M26: 4,507,683 km (0.04 R)
- M27: 4,652,793 km (0.106 R)
- M28: 4,897,834 km (0.081 R)
- M29: 6,619,257 km (0.052 R)
- M30: 7,006,416 km (0.111 R)
- M31: 7,429,329 km (0.096 R)
- M32: 7,572,195 km (0.102 R)
- M33: 8,270,668 km (0.096 R)
- M34: 8,359,379 km (0.054 R)
- M35: 8,567,620 km (0.034 R)
- M36: 9,172,294 km (0.109 R)
- M37: 9,264,147 km (0.118 R)
- M38: 9,915,945 km (0.049 R)
- M39: 10,136,602 km (0.074 R)
- M40: 10,550,539 km (0.098 R)
- M41: 11,493,754 km (0.113 R)
- M42: 11,758,692 km (0.066 R)
- M43: 11,825,263 km (0.113 R)
- M44: 11,891,834 km (0.063 R)
- M45: 12,260,892 km (0.102 R)
- M46: 13,010,078 km (0.104 R)
- M47: 14,232,442 km (0.083 R)
- M48: 15,272,746 km (0.063 R)
- M49: 15,564,162 km (0.12 R)
- M50: 15,894,026 km (0.094 R)
- M51: 16,972,776 km (0.113 R)
- M52: 17,048,024 km (0.107 R)
- M53: 18,267,246 km (0.084 R)
- M54: 18,421,631 km (0.059 R)
- M55: 18,848,434 km (0.106 R)
- M56: 18,926,375 km (0.112 R)
- M57: 19,121,749 km (0.043 R)
- M58: 19,475,100 km (0.076 R)
- M59: 20,068,854 km (0.116 R)
- M60: 21,273,864 km (0.041 R)
- M61: 21,599,240 km (0.119 R)
- M62: 21,680,771 km (0.113 R)
- M63: 22,213,638 km (0.116 R)
- M64: 22,419,784 km (0.085 R)
- M65: 22,502,362 km (0.101 R)
- M66: 23,166,876 km (0.071 R)
- M67: 24,430,230 km (0.069 R)
- M68: 25,070,210 km (0.092 R)
- M69: 25,888,959 km (0.057 R)
- M70: 26,628,720 km (0.095 R)
- M71: 27,067,192 km (0.119 R)
- M72: 27,331,531 km (0.063 R)
- M73: 27,685,180 km (0.036 R)
- M74: 28,665,495 km (0.073 R)
- M75: 28,979,800 km (0.119 R)
- M76: 29,430,688 km (0.107 R)
- M77: 29,521,195 km (0.117 R)
- M78: 29,611,851 km (0.107 R)
- M79: 29,884,119 km (0.055 R)
- M80: 30,385,422 km (0.095 R)
- M81: 30,568,380 km (0.081 R)
Planet 6 - Gas Giant
Semi-Major Axis: 8.25 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 979.6
Radius: 9
Gravity: 12.09 G
Time & Orbit
Eccentricity (e): 0.045
Orbit Range: 7.88 AU - 8.62 AU
Year: 8407 Days
Day: 7.1 Hours
Environment
Temp: -152 °C
Axial Tilt: 37.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (89)
Outer Limit: 26,747,663 km
- M1: 268,528 km (0.07 R)
- M2: 412,741 km (0.083 R)
- M3: 1,177,485 km (0.101 R)
- M4: 1,364,781 km (0.037 R)
- M5: 1,472,941 km (0.089 R)
- M6: 1,862,793 km (0.12 R)
- M7: 2,207,466 km (0.112 R)
- M8: 2,387,283 km (0.091 R)
- M9: 2,572,186 km (0.095 R)
- M10: 2,789,103 km (0.074 R)
- M11: 2,872,130 km (0.082 R)
- M12: 2,984,029 km (0.056 R)
- M13: 3,154,570 km (0.045 R)
- M14: 3,776,897 km (0.101 R)
- M15: 4,340,133 km (0.078 R)
- M16: 4,533,713 km (0.11 R)
- M17: 4,664,462 km (0.109 R)
- M18: 4,829,618 km (0.106 R)
- M19: 5,131,656 km (0.103 R)
- M20: 5,405,420 km (0.119 R)
- M21: 6,219,083 km (0.085 R)
- M22: 6,770,052 km (0.101 R)
- M23: 7,032,596 km (0.077 R)
- M24: 7,108,292 km (0.097 R)
- M25: 7,567,857 km (0.067 R)
- M26: 8,235,213 km (0.072 R)
- M27: 9,542,250 km (0.101 R)
- M28: 9,668,062 km (0.114 R)
- M29: 9,963,817 km (0.072 R)
- M30: 10,219,779 km (0.117 R)
- M31: 10,305,498 km (0.093 R)
- M32: 10,477,835 km (0.115 R)
- M33: 10,607,686 km (0.116 R)
- M34: 10,869,033 km (0.115 R)
- M35: 11,309,150 km (0.078 R)
- M36: 11,398,011 km (0.096 R)
- M37: 11,710,372 km (0.102 R)
- M38: 12,572,654 km (0.072 R)
- M39: 12,756,809 km (0.091 R)
- M40: 13,127,812 km (0.04 R)
- M41: 13,455,431 km (0.117 R)
- M42: 13,738,320 km (0.07 R)
- M43: 13,928,011 km (0.111 R)
- M44: 14,214,191 km (0.043 R)
- M45: 14,502,167 km (0.097 R)
- M46: 14,743,768 km (0.119 R)
- M47: 15,279,927 km (0.089 R)
- M48: 15,624,600 km (0.11 R)
- M49: 16,673,431 km (0.116 R)
- M50: 18,315,267 km (0.101 R)
- M51: 18,524,106 km (0.109 R)
- M52: 19,473,604 km (0.104 R)
- M53: 19,633,374 km (0.114 R)
- M54: 19,954,262 km (0.082 R)
- M55: 20,981,849 km (0.042 R)
- M56: 21,419,722 km (0.025 R)
- M57: 22,527,345 km (0.092 R)
- M58: 23,257,383 km (0.081 R)
- M59: 23,995,199 km (0.102 R)
- M60: 24,971,475 km (0.074 R)
- M61: 25,668,451 km (0.101 R)
- M62: 25,785,138 km (0.057 R)
- M63: 26,136,693 km (0.117 R)
- M64: 27,200,334 km (0.111 R)
- M65: 27,797,528 km (0.09 R)
- M66: 28,761,836 km (0.12 R)
- M67: 29,492,173 km (0.112 R)
- M68: 30,971,397 km (0.057 R)
- M69: 31,220,178 km (0.105 R)
- M70: 32,222,334 km (0.084 R)
- M71: 32,411,426 km (0.117 R)
- M72: 34,129,557 km (0.088 R)
- M73: 34,579,847 km (0.091 R)
- M74: 36,138,507 km (0.091 R)
- M75: 36,400,603 km (0.107 R)
- M76: 38,185,604 km (0.112 R)
- M77: 38,586,078 km (0.115 R)
- M78: 40,066,648 km (0.11 R)
- M79: 40,337,869 km (0.032 R)
- M80: 41,497,103 km (0.119 R)
- M81: 41,977,761 km (0.118 R)
- M82: 42,046,576 km (0.088 R)
- M83: 42,736,671 km (0.093 R)
- M84: 43,013,726 km (0.086 R)
- M85: 43,569,632 km (0.056 R)
- M86: 44,337,967 km (0.081 R)
- M87: 45,040,329 km (0.035 R)
- M88: 46,598,540 km (0.106 R)
- M89: 47,169,405 km (0.1 R)
Planet 7 - Gas Giant
Semi-Major Axis: 9.12 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 793.3
Radius: 10.6
Gravity: 7.06 G
Time & Orbit
Eccentricity (e): 0.241
Orbit Range: 6.92 AU - 11.32 AU
Year: 9771 Days
Day: 13.5 Hours
Environment
Temp: -172 °C
Axial Tilt: 76.4 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (83)
Outer Limit: 26,747,663 km
- M1: 149,299 km (0.119 R)
- M2: 282,291 km (0.111 R)
- M3: 363,373 km (0.073 R)
- M4: 441,763 km (0.106 R)
- M5: 512,522 km (0.105 R)
- M6: 913,445 km (0.042 R)
- M7: 989,141 km (0.103 R)
- M8: 1,208,601 km (0.076 R)
- M9: 1,422,227 km (0.065 R)
- M10: 1,579,305 km (0.053 R)
- M11: 1,694,944 km (0.096 R)
- M12: 2,665,984 km (0.073 R)
- M13: 2,917,906 km (0.113 R)
- M14: 3,206,930 km (0.087 R)
- M15: 3,688,784 km (0.093 R)
- M16: 3,938,314 km (0.089 R)
- M17: 4,991,183 km (0.034 R)
- M18: 5,584,489 km (0.09 R)
- M19: 6,761,076 km (0.05 R)
- M20: 7,811,851 km (0.105 R)
- M21: 8,052,255 km (0.107 R)
- M22: 8,295,052 km (0.102 R)
- M23: 8,746,539 km (0.045 R)
- M24: 8,871,154 km (0.106 R)
- M25: 9,417,635 km (0.094 R)
- M26: 9,759,466 km (0.072 R)
- M27: 10,764,764 km (0.041 R)
- M28: 10,853,774 km (0.082 R)
- M29: 11,122,153 km (0.051 R)
- M30: 11,757,046 km (0.095 R)
- M31: 11,986,529 km (0.104 R)
- M32: 12,450,283 km (0.065 R)
- M33: 13,490,886 km (0.109 R)
- M34: 13,779,609 km (0.064 R)
- M35: 14,510,245 km (0.076 R)
- M36: 16,161,507 km (0.082 R)
- M37: 16,983,397 km (0.028 R)
- M38: 17,451,788 km (0.116 R)
- M39: 17,924,368 km (0.031 R)
- M40: 19,151,220 km (0.058 R)
- M41: 19,856,574 km (0.094 R)
- M42: 20,405,000 km (0.118 R)
- M43: 22,762,214 km (0.053 R)
- M44: 23,682,689 km (0.107 R)
- M45: 24,205,833 km (0.081 R)
- M46: 24,322,519 km (0.092 R)
- M47: 24,968,184 km (0.097 R)
- M48: 25,322,731 km (0.112 R)
- M49: 26,817,812 km (0.081 R)
- M50: 27,180,886 km (0.04 R)
- M51: 27,911,821 km (0.087 R)
- M52: 28,464,436 km (0.111 R)
- M53: 30,018,010 km (0.057 R)
- M54: 31,662,988 km (0.118 R)
- M55: 31,790,744 km (0.057 R)
- M56: 32,239,089 km (0.104 R)
- M57: 32,431,921 km (0.083 R)
- M58: 33,272,062 km (0.101 R)
- M59: 33,596,989 km (0.096 R)
- M60: 34,250,283 km (0.097 R)
- M61: 34,709,997 km (0.112 R)
- M62: 37,173,724 km (0.088 R)
- M63: 37,646,155 km (0.04 R)
- M64: 37,984,844 km (0.071 R)
- M65: 38,188,596 km (0.027 R)
- M66: 38,256,514 km (0.086 R)
- M67: 39,486,956 km (0.111 R)
- M68: 40,245,418 km (0.062 R)
- M69: 41,496,654 km (0.104 R)
- M70: 42,619,685 km (0.093 R)
- M71: 42,831,366 km (0.027 R)
- M72: 42,972,736 km (0.055 R)
- M73: 45,398,615 km (0.12 R)
- M74: 45,759,146 km (0.116 R)
- M75: 45,975,914 km (0.078 R)
- M76: 46,192,980 km (0.064 R)
- M77: 46,773,569 km (0.073 R)
- M78: 46,991,982 km (0.086 R)
- M79: 47,210,545 km (0.069 R)
- M80: 47,429,706 km (0.114 R)
- M81: 48,015,381 km (0.118 R)
- M82: 48,309,192 km (0.074 R)
- M83: 48,456,246 km (0.093 R)
Planet 8 - Gas Giant
Semi-Major Axis: 11.53 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 61.7
Radius: 13.9
Gravity: 0.32 G
Time & Orbit
Eccentricity (e): 0.166
Orbit Range: 9.62 AU - 13.44 AU
Year: 13889 Days
Day: 8.7 Hours
Environment
Temp: -185 °C
Axial Tilt: 7.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (62)
Outer Limit: 26,747,663 km
- M1: 175,179 km (0.119 R)
- M2: 385,514 km (0.091 R)
- M3: 478,863 km (0.064 R)
- M4: 583,132 km (0.117 R)
- M5: 1,155,644 km (0.106 R)
- M6: 1,305,241 km (0.085 R)
- M7: 1,404,126 km (0.118 R)
- M8: 1,491,042 km (0.099 R)
- M9: 1,905,578 km (0.107 R)
- M10: 2,052,034 km (0.098 R)
- M11: 2,426,029 km (0.054 R)
- M12: 2,585,500 km (0.079 R)
- M13: 2,766,813 km (0.1 R)
- M14: 2,859,264 km (0.093 R)
- M15: 2,952,613 km (0.102 R)
- M16: 3,047,009 km (0.046 R)
- M17: 3,161,751 km (0.056 R)
- M18: 3,356,228 km (0.114 R)
- M19: 4,323,079 km (0.107 R)
- M20: 4,938,375 km (0.086 R)
- M21: 5,302,497 km (0.108 R)
- M22: 5,651,957 km (0.097 R)
- M23: 5,746,353 km (0.089 R)
- M24: 6,081,303 km (0.096 R)
- M25: 6,720,086 km (0.036 R)
- M26: 6,820,317 km (0.076 R)
- M27: 6,946,278 km (0.089 R)
- M28: 7,744,682 km (0.105 R)
- M29: 7,902,657 km (0.112 R)
- M30: 8,955,228 km (0.068 R)
- M31: 9,766,497 km (0.095 R)
- M32: 9,880,191 km (0.069 R)
- M33: 10,023,057 km (0.098 R)
- M34: 10,166,522 km (0.042 R)
- M35: 10,339,756 km (0.116 R)
- M36: 10,688,917 km (0.092 R)
- M37: 11,428,978 km (0.111 R)
- M38: 12,093,941 km (0.03 R)
- M39: 12,246,830 km (0.102 R)
- M40: 12,864,968 km (0.05 R)
- M41: 13,619,989 km (0.112 R)
- M42: 13,843,039 km (0.083 R)
- M43: 13,970,945 km (0.093 R)
- M44: 14,067,137 km (0.116 R)
- M45: 15,404,392 km (0.105 R)
- M46: 16,374,684 km (0.109 R)
- M47: 17,675,886 km (0.102 R)
- M48: 17,954,138 km (0.05 R)
- M49: 18,514,831 km (0.07 R)
- M50: 19,509,956 km (0.079 R)
- M51: 20,778,396 km (0.104 R)
- M52: 21,330,113 km (0.093 R)
- M53: 21,961,267 km (0.109 R)
- M54: 22,260,462 km (0.087 R)
- M55: 22,372,960 km (0.093 R)
- M56: 22,561,004 km (0.044 R)
- M57: 22,749,498 km (0.038 R)
- M58: 23,127,980 km (0.103 R)
- M59: 23,241,974 km (0.114 R)
- M60: 24,663,154 km (0.107 R)
- M61: 26,191,595 km (0.063 R)
- M62: 26,310,376 km (0.098 R)
Kuiper Belt
Range: 30.9 - 51.9 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 303 - 18,798 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.