COMMISSION 27 OF THE I. A. U.
       INFORMATION BULLETIN ON VARIABLE STARS
                   Number 2693

                                 Konkoly Observatory
                                 Budapest
                                 25 March 1985

                                 HU ISSN 0374 - 0676



      PHOTOELECTRIC TINES OF MINIMUM LIGHT OF HI PUPPIS


 The first photoelectric observations of HI Puppis (= CoD -49d2909 =
CPD -49d1276 = S 4884 ) were obtained in January, 1981 with the 0.6-m
telescope at Cerro Tololo Inter-American Observatory in Chile.
Differential measurements in B and V were made on nine nights resulting
in 780 individual observations in each bandpass. Each observation is
an average of two ten second integrations.
 The times of minimum light shown in Table I were determined by an
iterative process using the method of Hertzsprung (1928). Photographic
epochs of minimum light were previously obtained by Hoffmeister (1956).
 The O-C values in Table I were computed from the ephemeris

     Min I (Hel. J.D.) - 2444609.7720 + 0.43256515 E
                             +-0.0025 +-0.00000014 (p.e.)

which was derived by a least squares analysis utilizing the photoelectric 
and photographic data. The times of minimum were weighted 10 to
3, photoelectric to photographic.
  The observations, period study, and analyses of the light curves
are being published separately.




     Table I. Times of minima for HI Pup
----------------------------------------------
HEL. J.D.       MIN  EPOCH    O-C    FILTER
----------------------------------------------
2444608.69007   II   -2.5    0.0005   B,V
2444609.77208    I    0.0   -0.0001   B,V
2444611.71909   II    4.5   -0.0006   B,V
2444614.74561   II   11.5    0.0009   B,V
2444616.69329    I   16.0   -0.0003   B,V
----------------------------------------------


                    J.R. KERN and BEVERLY B. BOOKMYER
                    Dept. of Physics and Astronomy
                    Clemson University
                    Clemson, SC 29631
                    U.S.A.


References:

Hertzsprung, E., 1928, Bull. Astr. Inst. Netherlands 4, 179. [BIBCODE 1928BAN.....4..172H ]
Hoffmeister, C., 1956, Veroff. Sonneberg, 3, (1), 7, 26.