[vsnet-alert 21552] V523 Ori brightening

[Hiroyuki Maehara]

Kojima-san has reported the brightening of the WTTS V523 Ori (=IRAS05419-0123).

object         YYYYMMDD(UT)    mag      code
ORIV523        20170329.484   140c      TKo
ORIV523        20170902.765   128c      TKo
ORIV523        20170930.787   125c      TKo
ORIV523        20171017.758   125c      TKo
ORIV523        20171025.791   123c      TKo

Observer: Tadashi Kojima (Gunma, Japan)
Instruments: f.l.=200mm lens (F3.2) + Canon EOS 6D

Recent KWS data indicate that the object has brightened by ~1 mag in Ic-band.
http://kws.cetus-net.org/~maehara/VSdata.py?object=V523+Ori&resolver=&plot=1&obs_ys=&obs_ms=&obs_ds=&obs_ye=&obs_me=&obs_de=&submit=
Send+query
Follow-up observations are encouraged.

object   date(UT)       mag.     code  err.
ORIV523  20131104.75094 12.555Ic KW2   0.503
ORIV523  20131202.66093 11.930Ic KW2   0.277
ORIV523  20140104.58468 12.515Ic KW2   0.463
ORIV523  20140104.58502 12.235Ic KW2   0.357
ORIV523  20140127.54521 12.241Ic KW2   0.355
ORIV523  20141127.71503 14.344V  KW2   0.912
ORIV523  20141220.64324 12.120Ic KW2   0.265
ORIV523  20141220.64326 14.080V  KW2   0.787
ORIV523  20141225.61644 12.066Ic KW2   0.237
ORIV523  20141225.61682 12.243Ic KW2   0.278
ORIV523  20141227.62578 11.839Ic KW2   0.219
ORIV523  20150113.56534 12.015Ic KW2   0.221
ORIV523  20150115.56534 13.277V  KW2   0.398
ORIV523  20150115.56571 11.999Ic KW2   0.237
ORIV523  20150224.45730 14.060V  KW2   1.344
ORIV523  20150311.43442 11.388Ic KW2   0.216
ORIV523  20151013.82350 11.569Ic KW2   0.231
ORIV523  20151027.75425 11.417Ic KW2   0.451
ORIV523  20151115.74186 11.489Ic KW2   0.218
ORIV523  20151208.66998 11.226Ic KW2   0.167
ORIV523  20151211.66722 11.501Ic KW2   0.231
ORIV523  20151217.64052 11.117Ic KW2   0.169
ORIV523  20160110.60380 11.236Ic KW2   0.305
ORIV523  20160113.58826 11.389Ic KW2   0.199
ORIV523  20160131.53381 11.821Ic KW2   0.538
ORIV523  20160206.51309 11.239Ic KW2   0.185
ORIV523  20160207.49223 11.617Ic KW2   0.259
ORIV523  20160208.47495 11.403Ic KW2   0.208
ORIV523  20160209.50300 11.173Ic KW2   0.165
ORIV523  20160209.50340 11.715Ic KW2   0.266
ORIV523  20160210.49594 11.599Ic KW2   0.262
ORIV523  20160215.44252 11.606Ic KW2   0.373
ORIV523  20170117.56588 11.201Ic KW2   0.217
ORIV523  20170131.52488 14.502V  KW2   1.211
ORIV523  20170131.52528 11.426Ic KW2   0.215
ORIV523  20170308.43045 11.418Ic KW2   0.349
ORIV523  20170930.84020 12.521V  KW2   0.284
ORIV523  20170930.84053 12.488V  KW2   0.284
ORIV523  20171008.82113 12.731V  KW2   0.544
ORIV523  20171024.80260 11.912V  KW2   0.115
ORIV523  20171024.80265 10.305Ic KW2   0.086
ORIV523  20171024.80295 11.978V  KW2   0.122
ORIV523  20171024.80299 10.200Ic KW2   0.079
ORIV523  20171026.80471 11.897V  KW2   0.106
ORIV523  20171026.80476 10.438Ic KW2   0.100
ORIV523  20171026.80506 11.965V  KW2   0.112
ORIV523  20171026.80510 10.450Ic KW2   0.101