Large O-C noted for RT Ursae Minoris.

Details Large O-C noted for RT Ursae Minoris. Large O-C noted for RT Ursae Minoris.

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983geoce..10.....r&link_type=abstract

GEOS Circular on Eclipsing Binaries, No. EB 10, 3 p. (1983)

Physics

Eclipsing Binaries:Periods

Scientific paper

The eclipsing binary star RT UMi was observed after its discoverer Strohmeier (1958) only by de Sanctis and Tempesti (1977). It has been included since 1981 in the GEOS programme for understudied eclipsing binaries. The star was followed in 1981 and 1982 by several observers who collected more than 700 visual estimates. From 13 times of minimum light, a mean minimum was determined at HJD 2,445045.531+/-0.011d (at the 95% level of confidence). The mean O-C's, referred to the two previously published ephemerides, are: O-C1 = -0.086d and O-C2 = +0.058d (+/-0.011d). Both ephemerides are therefore no longer valid.

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