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IAUC 4865: N Sct 1989; 1989 QF; MV Lyr

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IAUC number 

                                                Circular No. 4865
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


NOVA SCUTI 1989
     H. W. Duerbeck and C. Gouiffes, European Southern Observatory,
report:  "Spectra taken Sept. 25.0 UT with the ESO 1.52-m telescope
(320-1000 nm, resolving power 1000) show the well-developed principal
spectrum of a moderately fast nova, one or two weeks after outburst
and about 1 mag below maximum.  While the blue-red part is
dominated by H, Fe II, and Na I emission lines, pronounced O I and Ca
II emission is seen in the infrared.  Photoelectric measurements by
K. Anton, Landessternwarte Heidelberg, with the ESO 0.5-m telescope
on Sept. 25.1 UT yield v = 10.75, b-y = +0.42, m1 = -0.04,
c1 = -0.11 (Stromgren system)."
     Visual magnitude estimate by P. Schmeer, Bischmisheim, West
Germany:  Sept. 24.86 UT, 10.7.


1989 QF
     Ephemeris extension to IAUC 4847:

     1989 ET      R.A. (1950) Decl.     Delta      r       V
     Oct.  1    22 39.55    - 4 31.5    0.394    1.363    17.5
           6    22 35.35    - 4 42.8
          11    22 33.14    - 4 46.7    0.488    1.411    18.2
          16    22 32.57    - 4 44.3
          21    22 33.37    - 4 36.4    0.592    1.455    18.9
          26    22 35.31    - 4 23.6
          31    22 38.23    - 4 06.2    0.704    1.494    19.4
     Nov.  5    22 41.99    - 3 44.7
          10    22 46.47    - 3 19.4    0.821    1.528    19.8
          15    22 51.54    - 2 50.8
          20    22 57.13    - 2 19.0    0.943    1.557    20.2


MV LYRAE
     Visual magnitude estimates (cf. IAUC 4386, 4834):  July 6.02 UT,
14.0 (P. Schmeer, Bischmisheim, W. Germany); Aug. 6.87, 14.0 (M.
Verdenet, Bourbon-Lancy, France); 9.88, 13.7 (Verdenet); 12.98, 14.3
(Verdenet); 19.85, 14.8 (Verdenet); 25.1, 14.5 (J. E. Bortle,
Stormville, NY); Sept. 25.1, 13.1 (Bortle).


1989 September 25              (4865)             Daniel W. E. Green

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