COMMISSION 27 OF THE I. A. U.
       INFORMATION BULLETIN ON VARIABLE STARS
                    NUMBER 411

                               Konkoly Observatory
                               Budapest
                               1969 December 30


       PHOTOELECTRIC OBSERVATIONS OF UV Cet

      Twenty four flares of UV Cet were recorded in October 
1969 when participating in the cooperative programme.
Observations were carried out in the B photometric system
using 64-cm meniscus telescope. The content of Tables I, II
which follow is the same as for observations of EV Lac (I).



                                Table 1

    Date                    UT of coverage

Oct. 7  19h18m-20h24m, 2026-2158, 2204-2210, 2319-2326,
        2351-2400
     8  0000-0001, 1925-2043, 2046-2215, 2224-2232,
        2234-2310, 2314-2335, 2337-2345, 2348-2355, 
        2357-2400
     9  0000-0004, 0008-0023, 0028-0057
    10 (1900-1944, 1948-2017, 2020-2101), 2105-2231,
        1951-2023
    11  0000-0001, 0004-0102, 0105-0124, 1913-1949,
        1951-2023
    12  2046-2049, 2054-2106, 2112-2118, 2121-2231, 
       (2235-2252, 2254-2301, 2307-2333)  
    13  1840-1913, 1915-2201, 2203-2235, 2240-2259,   
        2302-2304, 2308-2320, 2324-2331, 2333-2340,
        2344-2400
    14  0000-0006, 0010-0049, 0053-0055, 1902-1903,
        1906-1956, 1958-2209, 2212-2308, 2315-2400
    15  0000-0003, 0007-0024, 0027-0100, 1838-2328,
        2332-2346
    16  0041-0050, 0054-0105, (1943-2057), 2113-2201,
        2204-2302, 2305-2400
    17  0000-0003, 0005-0006, 0010-0019, 0024-0031,
        0034-0048, 0050-0053, 1831-2042, 2056-2336,
       (2338-2345)

                         [FIGURE 1]
                         [FIGURE 2]
                         [FIGURE 3]

                                Table 2

Date and UT
of flare               t_b     t_a     m_B     sigma/I_0     P       M(z)
maximum                                                      

Oct.  7   20h38.4m    <0.1     0.6     0.55    0.12         0.21    2.52
     10   22 29.8      0.2     4.6     0.57    0.12         0.72    2.21
     10   22 34.5      0.1     3.2     1.79    0.12         3.04    2.22
     10   22 37.9      0.2     13      2.18    0.12         5.12    2.23
     10   23 15.1      0.1     5.0    >2.23    0.10         2.32    2.36
     10   23 35.2      0.2     1.5     0.55    0.09         0.34    2.48
     12   22 10.5      0.3     3.1     0.50    0.07         0.48    2.20
     13   20 13.5     <0.1     2.5     0.89    0.12         0.76    2.53
     13   23 35.3      0.9     23      1.96    0.10        12.4     2.58
     14   19 52.4      0.2     4.1     0.54    0.10         0.60    2.69
     14   20 16.1      0.1     1.3     0.63    0.10         0.36    2.48
     14   21 05.3      0.3    13.2     0.87    0.12         2.36    2.25
     14   21 18.4      0.2     1.2     0.63    0.10         0.24    2.22
     14   21 19.7      0.1     1.6     0.58    0.10         0.20    2.22
     14   21 54.2      0.2     0.6     0.70    0.09         0.36    2.19
     15   21 48.9      0.3     1.3     0.66    0.09         0.36    2.19
     15   23 19.4      2.8     5.0     0.54    0.06         1.92    2.51
     15   23 25.5      1.1     1.7     0.37    0.06         0.52    2.56
     16   21 23.9      0.2     1.1     0.73    0.11         0.34    2.20
     16   21 25.6      0.6     5.4     0.50    0.11         0.72    2.20
     16   21 50.0      0.1     4.0     0.63    0.11         0.48    2.20
     16   22 05.3     (3.3)    9.9    >2.18    0.09        16.9     2.44
     16   22 15.2      0.1     37      1.59    0.09        25.6     2.51
     17   21 11.0      1.0     3.0     0.28    0.10         0.72    2.21 






                       P.F. CHUGAINOV
                       N.I. SHAKHOVSKAYA
               Crimean Astrophysical Observatory

[References]
(1) P.F. Chugainov, N.I. Shakhovskaya "Photoelectric observations 
          of EV Lac", I.B.V.S. No. 410, 1969
[Originally erroneous: No. 413]

Correction to IBVS 405: The time of monitoring of 1969         
                        Sep 20 should be read 15h05m-19h06m
                        (instead of 15h50m).