COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                      NUMBER 862

                                Konkoly Observatory
                                Budapest
                                1974 January 14


 PHOTOELECTRIC MINIMA OF THE ECLIPSING VARIABLE T LEO MINORIS


The 10th magnitude eclipsing variable T LMi was observed
photoelectrically with the 36-inch reflectors at the Dodaira
Station of Tokyo Astronomical Observatory and at the Okayama
Astrophysical Observatory on twenty nights during the winters
of 1972-73 and 1973-74. The standard UBV colour filters were
used. BD+34d2032 was used as the primary comparison star through
the observations, and BD+33d1905 was occasionally observed for
checking the constancy of the comparison star.

                    [FIGURE 1]

  The whole UBV light curve was covered and it is found
that the depth of the primary minimum in V is 1.92m, being 
different from the value 2.48m previously reported by McDiarmid,
Princ.Contr. 7, 43, 1924. The corresponding depths in U and B are 
2.76m and 2.50m respectively. A shallow secondary minimum
was also detected. The figure shows the light variation in V for 
the primary minimum. Two epochs of the observed minima were obtained as

            JD(Hel) 2441725.1811,  O-C = -0.0890d,
        and JD(Hel) 2442042.2719   O-C = -0.0912d,

where the O-C residuals are calculated from the light elements
JD 2423856.323 + 3.0199336dE taken from the GCVS (1970).
  Further photoelectric observations are being done. Some image-
intensified coude spectra were also taken with the 74-inch reflector
at the Okayama Astrophysical Observatory.

1974 January 4

				A. OKAZAKI,  University of Tokyo and
				M. KITAMURA, Tokyo Astronomical Observatory.