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ABCDEFGHIJKLMNOPQRST
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100 Stellar Diameter Limits For Main Sequence Stars
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100 diameters
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ColorSpectral Class100 DJump Point Masked?AUMilesKilometersHabitable Zone (AU)
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Blue-WhiteO516.84 AUYes16.74778,410,0001,252,729,4635132,122
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B06.92 AUYes6.88320,013,000515,011,001103424
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B53.56 AUYes3.53164,331,000264,465,1092185
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Very Bright WhiteA02.34 AU17-2.33108,112,500173,990,2036.527
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A51.59 AU16-1.5873,516,500118,313,3383.213
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Yellow- WhiteF01.22 AU15-1.2156,218,50090,474,9061.87.4
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F51.12 AU14-1.1251,894,00083,515,2981.14.7
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YellowG00.98 AU12-0.9845,407,25073,075,8850.813.4
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G50.87 AUNever0.8640,217,85064,724,3560.642.7
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OrangeK00.80 AUNever0.7936,758,25059,156,6690.461.9
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K50.69 AUNever0.6932,001,30051,501,1000.291.2
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RedM00.59 AUNever0.5927,244,35043,845,5310.180.75
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M50.30 AUNever0.3013,838,40022,270,7460.060.27
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M90.12 AUNever0.125,621,8509,047,4910.020.08
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Main SequenceInner EdgeOuter Edge
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(Dwarfs)
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Table of main-sequence stellar parameters
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Stellar ClassRadiusMassLuminosityTemperatureExampleshabitable zone (AU)
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R/R☉M/M☉L/L☉Kinner edgeouter edge
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O6184050000038000Theta1 Orionis C5132,122
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B07.4182000030000Phi1 Orionis103424
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B53.86.580016400Pi Andromedae A2185
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A02.53.28010800Alpha Coronae Borealis A6.527
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A51.72.1208620Beta Pictoris3.213
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F01.31.767240Gamma Virginis1.87.4
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F51.21.32.56540Eta Arietis1.14.7
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G01.051.11.265920Beta Comae Berenices0.813.4
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G21115780Sol (Sun)0.733.0
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G50.930.930.795610Alpha Mensae0.642.7
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K00.850.780.4524070 Ophiuchi A0.461.9
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K50.740.690.16441061 Cygni A0.291.2
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M00.630.470.0633920Gliese 1850.180.75
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M50.320.210.00793120EZ Aquarii A0.060.27
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M80.130.10.00082660Van Biesbroeck's star0.020.08
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The solar radius is approximately 695,500 kilometres (432,450 miles) or about 110 times the radius of the Earth, or 10 times the average radius of Jupiter.
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Stellar ClassRadius - R/R☉mileskilometersAUluminosity
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O6187,784,10012,527,2950.0837500000
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B07.43,200,1305,150,1100.034420000
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B53.81,643,3102,644,6510.0177800
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A02.51,081,1251,739,9020.011680
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A51.7735,1651,183,1330.007920
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F01.3562,185904,7490.00606
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F51.2518,940835,1530.00562.5
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G01.05454,073730,7590.00491.26
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G21432,450695,9610.00471
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G50.93402,179647,2440.00430.79
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K00.85367,583591,5670.00400.4
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K50.74320,013515,0110.00340.16
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M00.63272,444438,4550.00290.063
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M50.32138,384222,7070.00150.0079
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M80.1356,21990,4750.00060.0008
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Dangerous/Safe Stellar Orbit Jump Distances
Time to 100 Planetary Diameters