Despite the discovery of LL Com, a Lyrae-type eclipsing binary system, approximately 60 yr
ago, little has been found concerning its detailed photometry and orbital-period change until …

New photometry of the neglected eclipsing binary FR Orionis was obtained in 2012
November and December. Using the updated Wilson–Devinney program, the photometric …

We present BVR photometric observations and several eclipsing times for AV Hya and DZ
Cas from 2004 to 2011. Using the Wilson–Devinney method, the photometric solutions with …

We present new photometry for the eclipsing binary V1241 Tau, which was obtained on six
nights between 2011 December and 2012 January using the 85 cm telescope at the …

The lander of China's Chang'E-3 spacecraft is equippedwith a 15-cmtelescope that is very
useful for monitoring celestial objects in the ultraviolet (UV) band (245–340 nm). The Lunar …

Variability is one of the main observational characteristics of blazars. Studying variability is
an efficient method to reveal the nature of active galactic nuclei. In the present work, we …

We present a period analysis of the near-contact binary CN And using all available times of
light minima. It is revealed that the orbital period exhibits a long-term decrease as well as a …

New multi-color photometry of the eclipsing binary UU Leo, acquired from 2010 to 2013, was
carried out by using the 60-cm and 85-cm telescopes at the Xinglong station, which is …

Orbital period changes of the W UMa-type binary YY Eri are analyzed by using all
photoelectric and ccd times of light minimum. The results show that its orbital period is …

We present new observations for the eclipsing binary EP Aurigae, which were performed by
using three small telescopes in China from 2003 December to 2014 January. With the …