We present the results
of our study of three previously unstudied short-period eclipsing binaries,
namely: ASAS 110609﹣ 2045.3,
ASAS 130057+2120.3. Using the visual (V)-band
data obtained from the ASAS catalogue, the orbital and physical parameters of
the systems were derived for the first time using the Wilson-Divenney (WD) codes. Our
investigation revealed that ASAS 110609﹣2045.3 is a near-contact binary star of the W
Uma type having an angle of inclination of 80°±1, a mass ratio of about 0.5, an
orbital period of 0.2933 ± 0.0130days, and an effective temperature
in the range of 5800K - 6200K, making it a G2V-F7V spectral system. ASAS 105331﹣7424.7 was established to be an over-contact
binary system of the W Uma type, inclined at 86°±2 to the line of sight, having a
mass ratio of about 0.9, a period of 0.4825 ± 0.0002, and an effective temperature in the range of
5200K - 5300K, making it a K2V-K0V spectral
system. A third light factor of just 0.1 was established for the system, however, no evidence of starspots or
discs was inferred for either component. ASAS 130,057+2120.3 is a W Uma binary having a
mass ratio of about 0.6 in a state of marginal contact. Its orbital inclination
is 55°±1; the effective temperature is in
the range of 6200K - 6500K, making it a F7V-F5V stellar
system. The system showed evidence of third light, with a third light factor of
0.6, however, the presence of spots or discs could not be established for either
component. The deduced period was 0.8930 ± 0.0014 days. None of the systems showed any evidence
of the O’Connell effect on either component.
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