COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                  Number 2864

                                Konkoly Observatory
                                Budapest
                                14 February 1986

                                HU ISSN 0374 - 0676





           THE PROPER MOTION OF CR Gem




  CR Gem = AGK3 +16 639 = BD +16 1194 is an Lb type
variable star with photographic magnitudes in the range
10.9-11.8 (GCVS) and spectrum N (Stephenson, 1973).
  During the use of the AGK3 stars as a reference frame
for the reduction of some plates, it was noticed that the
proper motion of AGK3 +16 639 (-0.126" in RA and 0.600" in
DEC) seemed to be too large and it was decided to attempt
the redetermination of the proper motion.
  The first-epoch position is based on the published
material of the Bordeaux Astrographic Catalogue where CR
Gem was identified with object 556 on plate 614 (zone +17deg
and epoch 1902.0). The plate was rereduced using AGK3
stars as the reference system; the least-squares adjustment
gave a standard error of +- 0.32" in both, RA and DEC.
  The second-epoch position was obtained from a new plate
(epoch 1985.9) taken with the Double Astrograph of the El
Leoncito station. The reduction, performed using AGK3
stars, gave a standard error of +- 0.38" in RA and +- 0.24" in
DEC.

  The resulting annual proper motion is:


  RA = 0.000" +- 0.006"(se)  ; DEC = -0.048" +- 0.005"(se)



   Even though this result is based on one first-epoch
position and one second-epoch position, it seems to be in
agreement with Stephenson's (1978) hypothesis referring to
the possible occurrence of systematic errors in the proper
motions of the reddest stars of the AGK3.





                      CARLOS E. LOPEZ
                      Observatorio "FELIX AGUILAR"
                      Benavidez 8175 (oeste)
                      5407 Marquesado - San Juan
                      Argentina.





References:
Stephenson, C.B. (1973). Publ.Warner & Swasey Obs. 1,1 (No.4) [BIBCODE 1973gcss.book.....S ]
Stephenson, C.B. (1978). Astron.J. 83, 816 [BIBCODE 1978AJ.....83..816S ]