UDC 53
UDC 520
UDC 521
UDC 523
UDC 524
UDC 52-1
UDC 52-6
CSCSTI 41.00
CSCSTI 29.35
CSCSTI 29.31
CSCSTI 29.33
CSCSTI 29.27
CSCSTI 29.05
Russian Classification of Professions by Education 03.06.01
Russian Classification of Professions by Education 03.05.01
Russian Classification of Professions by Education 03.04.03
Russian Library and Bibliographic Classification 2
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 614
Russian Trade and Bibliographic Classification 6135
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
In this paper we investigate the periodic variability of the magnetic field of the magnetic Ap star 33 Lib. The period of 83.5 years found by us earlier from the magnetic field estimates and 79.2 years determined later are close to the period of variability of the magnetic field of the known Ap star $\gamma$ Equ of 97 years. Such a slow rotation is also confirmed by a very small value of the projection of the equatorial velocity onto the line of sight $v_e \sin i = 0.6$ km/s.
stars: magnetic field; individual: 33 Lib
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