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T Crucis is a star in the constellation Crux. [1]

5 relations: Apparent magnitude, Cepheid variable, Constellation, Crux, Star.

The apparent magnitude (m) of a celestial object is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere.

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A Cepheid variable is a star that pulsates radially, varying in both temperature and diameter to produce brightness changes with a well-defined stable period and amplitude.

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In modern astronomy, a constellation is a specific area of the celestial sphere as defined by the International Astronomical Union (IAU).

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Crux, located in the deep southern sky, is the smallest yet one of the most distinctive of the 88 modern constellations.

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A star is a luminous sphere of plasma held together by its own gravity.

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References

[1] https://en.wikipedia.org/wiki/T_Crucis

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