Period variation determination of the W UMa type star V502 OPH

Details Period variation determination of the W UMa type star V502 OPH Period variation determination of the W UMa type star V502 OPH

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989rmxaa..17...97h&link_type=abstract

Revista Mexicana de Astronomia y Astrofisica (ISSN 0185-1101), vol. 17, Dec. 1989, p. 97-101.

Astronomy and Astrophysics

Astronomy

7

Eclipsing Binary Stars, Electrophotometry, Ephemeris Time, Stellar Orbits, Variable Stars, Stellar Magnitude, Stellar Spectrophotometry

Scientific paper

Photoelectric-photometry data of the W UMa system V502 Oph were made
during June 1987 in Mexico. The observations are combined with
previously published minima for the system to derive a quadratic
ephemeris. The results suggest that V502 has a smoothly decreasing
period with a rate of change of -1.64 s/century.

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