Property:Spectral class
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This is a property of type Text, and is set and generated by the "Spectral class" field of {{InfoBoxSystem}}.
Harvard spectral classification[edit]
Class | Effective temperature | Vega-relative chromaticity | Chromaticity (D65) | Main-sequence mass (solar masses) |
Main-sequence radius (solar radii) |
Main-sequence luminosity (bolometric) |
Hydrogen lines |
Fraction of all main-sequence stars |
---|---|---|---|---|---|---|---|---|
O | ≥ 30,000 K | blue | blue | ≥ 16 M☉ | ≥ 6.6 R☉ | ≥ 30,000 L☉ | Weak | 0.000030% |
B | 10,000–30,000 K | bluish white | deep bluish white | 2.1–16 M☉ | 1.8–6.6 R☉ | 25–30,000 L☉ | Medium | 0.12% |
A | 7,500–10,000 K | white | bluish white | 1.4–2.1 M☉ | 1.4–1.8 R☉ | 5–25 L☉ | Strong | 0.61% |
F | 6,000–7,500 K | yellowish white | white | 1.04–1.4 M☉ | 1.15–1.4 R☉ | 1.5–5 L☉ | Medium | 3.0% |
G | 5,200–6,000 K | yellow | yellowish white | 0.8–1.04 M☉ | 0.96–1.15 R☉ | 0.6–1.5 L☉ | Weak | 7.6% |
K | 3,700–5,200 K | light orange | pale yellowish orange | 0.45–0.8 M☉ | 0.7–0.96 R☉ | 0.08–0.6 L☉ | Very weak | 12% |
M | 2,400–3,700 K | orangish red | light orangish red | 0.08–0.45 M☉ | ≤ 0.7 R☉ | ≤ 0.08 L☉ | Very weak | 76% |