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In astronomy, the color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. The lower the color index, the more blue (or hotter) the object is.
Overview & Quantitative color index terms
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color index filters star object indices system red also temperature blue magnitude objects called filter see query ubv photometric passbands
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Color index | is a | simple numerical expression that determines the color of an object | 0.90 | text |
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