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Table of Main-Sequence Star Data |
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Table of Main-Sequence Star Data |
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| spectral class | example star | temperature K | luminosity | mass | radius |
|---|---|---|---|---|---|
| O9.5 | Orionis C | 33,000 | 30,000 | 18.0 | 5.90 |
| B0 | Becrux | 30,000 | 16,000 | 16.0 | 5.70 |
| B2 | Spica | 22,000 | 8,300 | 10.5 | 5.10 |
| B5 | Achernar | 15,000 | 750 | 5.40 | 3.70 |
| B8 | Rigel | 12,500 | 130 | 3.50 | 2.70 |
| A0 | Sirius A | 9,500 | 63 | 2.60 | 2.30 |
| A2 | Fomalhaut | 9,000 | 40 | 2.20 | 2.00 |
| A5 | Altair | 8,700 | 24 | 1.90 | 1.80 |
| F0 | . | 7,400 | 9.0 | 1.60 | 1.50 |
| F2 | . | 7,100 | 6.3 | 1.50 | 1.30 |
| F5 | Procyon A | 6,400 | 4.0 | 1.35 | 1.20 |
| G0 | Alpha Centauri A . | 5,900 | 1.45 | 1.08 | 1.05 |
| G2 | The Sun | 5,800 | 1.00 | 1.00 | 1.00 |
| G5 | Mu Cassiopeiae | 5,600 | 0.70 | 0.95 | 0.91 |
| G8 | Tau Ceti | 5,300 | 0.44 | 0.85 | 0.87 |
| K0 | Pollux | 5,100 | 0.36 | 0.83 | 0.83 |
| K2 | Epsilon Eridani | 4,830 | 0.28 | 0.78 | 0.79 |
| K5 | Alpha Centauri B | 4,370 | 0.18 | 0.68 | 0.74 |
| M0 | . | 3,670 | 0.075 | 0.47 | 0.63 |
| M2 | Lalande 21185 | 3,400 | 0.03 | 0.33 | 0.36 |
| M4 | Ross 128 | 3,200 | 0.0005 | 0.20 | 0.21 |
| M6 | Wolf 359 | 3,000 | 0.0002 | 0.10 | 0.12 |