TITLE:   GCN CIRCULAR
NUMBER:  12966
SUBJECT: GRB120219A: TNT optical afterglow candidates
DATE:    12/02/19 17:28:20 GMT
FROM:    L.P. Xin at NAOC  <xlp@bao.ac.cn>

L.P. Xin, M. Zhai , J. Y.Wei, Y.L. Qiu,J. Wang, J.S. Deng, 
C. Wu, X. H. Han on behalf of EAFON report:

We began to observe GRB120219A (Swenso et al. GCN 12964 ) 
with Xinglong TNT telescope at 14:32:15 (UT), 127 sec after 
the burst. A serveral white and  R-band were obtained.

After combining 11*300s R-band images, a new marginal source was 
found within the errorbox  of X-ray counterpart  ( Swenso et al. GCN 12964). 
Its coordinates ( RA and Dec ) are  08:39:09.55 51:01:56.5  (J2000)
with an uncertainty of  about 1 arcsecond.
The brightness of the source is estimated to be about 
21.5 +/- 0.3 mag relatively to  USNO B1.0 R2 mag 
at the mean time of 37 min after the burst. 

Further observations and confirmation are encouraged.

This message may be cited.

For more information about Xinglong GRBs Follow-up
observations, please visit the website:
http://www.xinglong-naoc.org/grb/

We thank ChunLan Lu for performing these observations.