Zeta Capricorni

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ζ Capricorni
Observation data
Epoch J2000.0
Constellation
(pronunciation)
Capricornus
Right ascension 21h26m40.0s
Declination −22°24′41″
Apparent magnitude (V) +3.77
Distance 398 ± 44 ly
(122 ± 13 pc)
Spectral type G4Ibp
Other designations
34 Capricorni HR 8204, HD 204075, CD−22°15388, FK5 806, HIP 105881, SAO 190341, GC 30020, ADS 14971, CCDM J21267-2225

Zeta Capricorni, (ζ Cap / ζ Capricorni), is a fourth-magnitude star in the constellation Capricornus, with the traditional but seldom used name Marakk, which is Arabic for "loins" (of the goat).

ζ Capricorni is a binary star, with the primary component ζ Capricorni A being a yellow G-type supergiant with an apparent magnitude of +3.77. It is considered one of the prototypical examples of a Barium star, which makes it having overabundances of carbon molecules (such as C2) and s-process elements. It is especially notable for having an overabundance of the s-process element praseodymium.

Its companion, ζ Capricorni B is a white dwarf.

The ζ Capricorni binary system is approximately 398 light years from Earth.


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