COMMISSION 27 OF THE I. A. U.
          INFORMATION BULLETIN ON VARIABLE STARS
                       NUMBER 581

                                 Konkoly Observatory
                                 Budapest
                                 1971 September 18



                     V 1057 CYGNI


       In a further search for early photographs of this
star (cf. Robinson and Harwood, IBVS 568, 1971), it was
found on the "Photographische Sternkarten", Vol. X, Blatt 198
(Palisa and Wolf, Wien 1931), from a plate taken 1905,
July 26 by Wolf, The star then was slightly fainter than
m_pg=16.5. The plate contains what is obviously a plate
fault just to the east of the star, resembling a small
bright nebula, that is not seen on another plate, taken
1901, July 12 by Wolf (Die Milchstrasse und die kosmischen
Nebel, Bild 12, Potsdam 1925). On this latter plate the
magnitude of the star also appears to be around 16.5, rather
somewhat fainter.
       The star was also found, with a magnitude definitely
fainter than 16.5, on the reflector plate covering regions
44 and 46 in Isaac Roberts' Atlas of 52 Regions, a Guide to
Herschel's Fields (D. Klumpke Roberts, Paris 1929). The
plate was taken 1896, October 10, and shows some coma, but
not the probable plate fault.
       Thus V 1057 Cygni seems to have brightened just
slightly between 1896 and 1921, when its magnitude was 16.3
(Robinson and Harwood, op, cit.). It then remained as a
low-amplitude T Tauri variable (16.0+-0.3, Meinunger and
Wenzel MVS 5:9, 1971) up to the brightening of about
magnitudes and spectral change in 1969 (Welin, Astr, and
Ap. 12. 312, 1971, Herbig and Harlan, IBVS 543, 1971.
       The comparison stars used are h and k in Meinunger
and Wenzel, op. cit.




                             G. WELIN

                      Uppsala Observatory, Sweden.
                    Temporary address: Lick Observatory
                      Santa Cruz, California, U.S.A.