COMMISSION 27 OF THE I. A. U.
       INFORMATION BULLETIN ON VARIABLE STARS
                    NUMBER 312

                               Konkoly Observatory
                               Budapest
                               1968 November 12

      PERIODS FOR EIGHT VARIABLE STARS IN SAGITTARIUS

  Periods have been determined at the Maria Mitchell
  Observatory  from Harvard and Nantucket plates for the 
  following variable stars:

 Var.  R.A. 1900   Dec.      Max        Min  Type JD           Period
 1     18h13m55s -22d15.4    13.8       16.0 EA   32702.406    3.16299d
 2        18 42  -24 58.9    15.6       16.6 RR   25474.346    0.56600
 3        28 25  -23 06.1    14.5       15.7 RV   23238        137.5
 4        28 59  -21 38.7    14.9      [15.9 M    27250        255
 5        30 33  -22 52.0    14.8       16.1 M    26120        272
MN Sgr    33 55  -28 07.3    13.5       16.0 M    27221        283
NO Sgr    40 53  -19 42.7    13.0      [15.5 M    36050        296
NR Sgr    41 27  -24 03.5    12.5      [15.5 SR   25900        183


Notes:

Var. 1. 15 minima. An approximate period had been determined
        by Mary Ashman in 1967 and improved by Jean Jackman
        in 1968.
Var. 2. 185 observations. Bailey Var. No. 8 in M28. An 
        approximate period determined in 1964 by Joyce Pascoe
        has been revised in 1968 by Linda Deery. Period 
        increasing 2 x 10^-10 d. per epoch.
Var. 3. 48 epochs.
Var. 4. 55 epochs.
Var. 5. 35 epochs.
MN Sgr. 55 epochs. Period derived by Karen Alper.
NO Sgr. 29 epochs.
NR Sgr. Originally classified as irregular.

This work has been carried out under a grant from
the U.S. National Science Foundations.

                        DORRIT HOFFLEIT
                    Maria Mitchell Observatory
                    Nantucket, Mass. U.S.A.