COMMISSION 27 OF THE I. A. U.
      INFORMATION BULLETIN ON VARIABLE STARS
                   NUMBER 721

                                  Konkoly Observatory
                                  Budapest
                                  1972 September 29


 PHOTOELECTRIC OBSERVATIONS OF V 1216 Sgr DURING THE 1972,
          JULY 3-17 INTERNATIONAL PATROL


   According to the observing schedule of cooperative 
observations proposed by the IAU Working Group on Flare Stars
(P.F. Chugainov, 1971, IBVS No. 605), V 1216 Sgr was patrolled
at the Catania Astrophysical Observatory for about 20.3 hours.
   The observations were carried out with a 61 cm universal
type reflector feeding a synchronous u,b,v photometer.
   The detailed coverage intervals are given in the accompanying 
Table 1. One flare was observed during our patrol and
its characteristics are reported in Table 2 (see Figure).
   The explanation of symbols and details of the observing
equipement can be found in a preceeding number of this Bulletin
(Cristaldi and Rodono, 1971, IBVS No. 525).


Catania Astrophysical Observatory        S. CRISTALDI
September 16, 1972                       M. RODONO


                      [FIGURE 1]


                                 Table 1.

                            (61cm telescope)
--------------------------------------------------------------------------------------------------
Date        Light                        Coverage                            Total
                                           (UT)                             coverage  3sigma / I_0
1972 July
--------------------------------------------------------------------------------------------------
03-04       u/b/v   20h42m-2101; 2103-2130; 2137-2153; 2211-2221; 2247-2254;        
                    2256-2318; 2320-2342; 2344-2400; 0006-0027; 0030-0052; 
                    0108-0120; 0132-0.141.                                    203m  .50/.11/.06
04-05       u/b/v   2216-2236; 2239-2248; 2317-2336; 2347-2357; 0011-0021;
                    0036-0045; 0047-0107; 0116-0134; 0137-0149; 0154-0200.    133   .40/.07/.03
05          u/b/v   2022-2039; 2040-2050.                                      27   .70/.13/.07
06-07       u/b/v   2205-2219; 2222-2229; 2231-2244; 2247-2259; 2301-2311;
                    2352-2400; 0000-0004; 0005-0013; 0014-0035; 0037-0057;
                    0103-0122; 0131-0142; 0144-0200.                          159   .76/.10/.04
07-08       b/v     2339-2356; 0026-0043; 0045-0106; 0108-0126; 0129-0147.     91   .10/.06
10-11       u/b/v   2031-2051; 2053-2057; 2059-2114; 2123-2158; 2214-2227;
                    2317-2327; 2338-2357; 2359-2400; 0000-0026.               143   .70/.09/.05
11          u/b/v   2237-2258; 2300-2307.                                      28   .46/.06/.03
15-16       u/b/v   2127-2146; 2152-2241; 2311-2329; 2336-2400; 0000-0013;
                    0018-0024.                                                139   .60/.08/.05
16          u/b/v   2050-2109; 2111-2133; 2134-2146; 2149-2211; 2213-2227.     89   .57/.07/.03
17-18       u/b/v   2046-2100; 2104-2149; 2151-2211; 2237-2400; 0000-0044.    206   .53/.08/.05
--------------------------------------------------------------------------------------------------



                                Table 2.
                             (July 6, 1972)
---------------------------------------------------------------------------------------------------------                           
                                                                                   Energy       Air
no. Light   t_maxUT         JD       d_b    d_a  3sigma/I or (I_f/I_0)_max   P       erg       mass f sky
                       2441000.0000
---------------------------------------------------------------------------------------------------------
1    u'     22h54.1m  505.4542       0.4    4.4   2.00         8.20         4.77  2.67x10^30  1.70  0  2 
     b      22 54.1   505.4542       0.5    6.2   0.10         0.55         0.83  2.95x10^30  1.70  0  2
     v         -          -           -      -     -            -            -        -        -    -  -
---------------------------------------------------------------------------------------------------------