UU Aqr

An Eclipsing Cataclysmic Variable Star

UU Aqr is a nova-like cataclysmic variable star located in the constellation Aquarius. It is a close binary system where a white dwarf accretes material from a donor star through an accretion disk. UU Aqr is an eclipsing system, allowing detailed observation of the structure through occultations. Its orbital period is approximately 3.9 hours, and the light curve exhibits both eclipses and irregular flickering. Spectroscopic and photometric studies reveal features typical of the SW Sextantis subtype, including phase shifts in emission lines, asymmetrical disk structures, and variable accretion activity. UU Aqr is an important object for studying accretion disk geometry, mass transfer dynamics, and magnetic interactions in compact binaries.

Photometry & Images

Catalogue Gaia
RA 332.273993621°
DEC -3.771745732°
U --
B --
V --
Parallax (mas) 3.85 ± 0.02
Light curve

TESS Data

sectors42 sectors55 sectors92

AAVSO Data

aavsodataimage

Spectroscopy

Spectrum of UU Aqr

References

1. Baptista R. et al. Spatially resolved spectra of the accretion disc of the nova-like variable UU Aquarii //Monthly Notices of the Royal Astronomical Society. – 2000. – Т. 314. – №. 4. – С. 713-726.

2. Dobrotka A., Mineshige S., Casares J. A flickering study of nova-like systems KR Aur and UU Aqr //Monthly Notices of the Royal Astronomical Society. – 2012. – Т. 420. – №. 3. – С. 2467-2474.