COMMISSION 27 OF THE I. A. U.
          INFORMATION BULLETIN ON VARIABLE STARS
                 Number 1028

                          Konkoly Observatory
                          Budapest
                          1975 August 5


        PHOTOELECTRIC MINIMA OF ER Ori AND AW Cam



Four minima of two eclipsing binaries are listed in the following
table.


-----------------------------------------------------------
       J.D. hel.        m.e.        N      E         (O-C)
       (2400000.+)
-----------------------------------------------------------
ER Ori 41990.54294   +-0.00003d     29   12947.0   -0.0136d
AW Cam 41990.4479       .0001       31    9216.0   - .0032
       92399.4962       .0002       33    4675.0   - .0032
       42417.3887       .0001       24    4769.5   - .0030
-----------------------------------------------------------


The photoelectric observations in V light were carried out by the
40 cm refractor of the Teramo Observatory. The heliocentric times
of the minima and the mean errors were obtained by the Kwee-Van
Woerden method. The secondary minimum of AW Cam was computed by
the Chiara method (Guarnieri, 1975). The number of observations
(N) is given in the fourth column.
The comparison and check stars of ER Ori are BD - 8d1051 and
BD - 5d1056 respectively, while the comparison star of AW Cam
is BD + 70d419.
(O-C) 's were computed with the elements of "1975 Rocznik 
Astronomiczny" for ER Ori and with the elements of Tempesti (1967) for
AW Cam.


Teramo Astronomical Observatory
I - 64100 Teramo


                         F. ZAVATTI
                         R. BURCHI


References:

Guarnieri, A., 1975, private communication
Tempesti, P., 1967 Mem.Soc.Astron.Ital., 38, 1 [BIBCODE 1967MmSAI..38..319T ]