COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 2118

                                 Konkoly Observatory
                                 Budapest
                                 1982 March 26

                                 HU ISSN 0374-0676




             PHOTOELECTRIC TIMES OF MINIMA

               OF ECLIPSING BINARIES



   The following times of minimum light have been determined from
observations through a standard Johnson-Morgan V filter and a 30 arcsec
diameter diaphragm during the 1980 and 1981 observing seasons with the
38-cm f/13 Cassegrain reflecting telescope associated with the Department
of Science at the Brisbane College of Advanced Education, Queensland.
   The observing procedure has been described previously (Kennedy and
Wisniewski, 1980).
As is done normally, a least-squares parabolic fit to the observations
was used to find times of minimum light. The chord-bisection method is used
as a check on the eclipses.
   Table I lists the Heliocentric Julian Dates, Epochs, (O-C) values and
the number of observations N, where each observation is the average of three
ten-second integrations.

Table I.

Star     Min.   J.D. Hel.2,400,000+   (O-C)     N
-------------------------------------------------------
DI Peg   I      43,071.0029           -0.0094d  58
         I      43,434.0295           -0.0097
         I      44,543.0401           -0.0108
         I      44,557.9879           -0.0110
UX Eri   I      43,491.0355           -0.0339   184
         II     44,571.9592           -0.0328
         II     44,591.9975           -0.0322
AH Vir   I      44,723.0431           +0.0609   139
         I      44,727.9342           +0.0617
         I      44,729.9698           +0.0597
         II     44,730.9926           +0.0637
         II     44,750.9637           +0.0663
         II     44,753.0010           +0.0660


   The ephemerides used to calculate the (O-C) values in Table I are stated

below.
DI Peg: J.D. Hel. Min. I = 2,437,527.3776 + 0.7118175d E
UX Eri: J.D. Hel. Min. I = 2,438,700.7228 + 0.44528226d E
AH Vir: J.D. Hel. Min. I = 2,435,245.6552 + 0.4075218d E





                HAROLD D. KENNEDY
                Midway Observatory
                Brisbane C.A.E.
                Kelvin Grove Campus
                KELVIN GROVE, Q. 4059
                AUSTRALIA





References:
Binnendijk, L. 1973, Astr. J., 78, 97. [BIBCODE 1973AJ.....78...97B ]
Binnendijk, L. 1967, Astr. J., 72, 82. [BIBCODE 1967AJ.....72...82B ]
Binnendijk, L. 1960, Astr. J., 65, 358. [BIBCODE 1960AJ.....65..358B ]
Kennedy, H.D. and Wisniewski, W.K. 1980, Publ. Var. Star. Sect.,
   R.A.S.N.Z. 8, 17.
Kennedy, H.D. 1979, I.A.U. Coll. 46, 357. [BIBCODE 1979ctvs.conf..357K ]