COMMISSION 27 OF THE I.A.U.
            INFORMATION BULLETIN ON VARIABLE STARS
                         Number 1290

                                                  Konkoly Observatory
                                                  Budapest
                                                  1977 June 7

                  V1705 AND V1706 Sgr

Finder charts have not previously been published for the
faint variable stars, V1705 and V1706 Sgr. Discovered by
Hoffleit, their periods were determined by Jean Hales from her
observations on Harvard plates taken between 1924 and 1953
(Hoffleit 1957). These stars have now been examined on Nantucket
plates for the years 1957 through 1976. Both are about 14.9 pg
at maximum, while the plate limit on the Nantucket plates for a
star some 7 deg from the plate center is seldom better than 15.5.
The revised ephemerides representing the observed maxima are

          V1705 Sgr Max = 24 42250+142d E   SR
          V1706 Sgr Max =    38615+205  E    M

   The period for the semi-regular variable, V1705 Sgr, is the same
as the one previously published; however, there appears to have
been a shift in phase. The new period for V1706 Sgr (revised
from 210.5d:) satisfies both the old Harvard and the new Nantucket
observations.
    The letters on the finder charts represent BD stars in the
-19 deg zone: A=5123, B=5121, C=5124 and D=5128. The charts cover
approximately 10'x14' and South is at the top.


                                   DORRIT HOFFLEIT

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



Reference:

Hoffleit, D. 1957 Astron. Jour. 62, 120 [BIBCODE 1957AJ.....62..120H ]


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