TITLE: GCN CIRCULAR NUMBER: 24346 SUBJECT: LIGO/Virgo S190426c: YAHPT Optical Observation DATE: 19/04/29 17:45:58 GMT FROM: Tianrui Sun at Purple Mountain Obs,CAS Tianrui Sun,Jian Chen,Lei Hu,Fan Li, Ye Yuan, Yanning Fu, Yue Chen.,Xuefeng Wu,Kelai Meng(PMO), Wen-xiong Li, Xinghan Zhang,Xiao-feng Wang(THU), Lifan Wang(PMO and TAMU) We report the observations of the updated localization with GLADE(Dalya et al., 2018, MNRAS, 479, 2374) catalogue of the gravitational event S190426c (The LIGO Scientific Collaboration and the Virgo Collaboration, GCN 24277,24237) with the Yaoan High Precision Telescope at Yaoan Observation Station(in Yunnan Province, China(101.1811�� E,25.528��N)), Purple Mountain Observatory. We obtained images of 48 galaxies in Rc band with exposure time 120s and calibrated to the PPMX catalogue (Roeser, 2008) .No obvious transient has been identified. The list of the observed/inspected targets and its 5-sigma magnitude limit is given below. Object |RA DEC |ObserveTime |MagLimit(err) 2MASS_J00055155+8537092 | 00:05:51.000 +85:37:09.00 | 2019-04-27T17:31:10 | 18.40(0.070) 2MASS_J00060903+8426372 | 00:06:09.000 +84:26:37.00 | 2019-04-27T18:20:39 | 18.09(0.098) 2MASS_J00084951+8555097 | 00:08:49.000 +85:55:09.00 | 2019-04-27T18:25:25 | 18.05(0.075) 2MASS_J00092210+8506409 | 00:09:22.000 +85:06:40.00 | 2019-04-27T18:42:10 | 17.94(0.079) 2MASS_J00142097+8440183 | 00:14:20.000 +84:40:18.00 | 2019-04-27T16:57:51 | 18.26(0.060) 2MASS_J00143375+8524234 | 00:14:33.000 +85:24:23.00 | 2019-04-27T14:08:57 | 19.23(0.051) 2MASS_J00152318+8610254 | 00:15:23.000 +86:10:25.00 | 2019-04-27T15:49:52 | 18.71(0.080) 2MASS_J00171922+8412432 | 00:17:19.000 +84:12:43.00 | 2019-04-27T18:39:45 | 15.29(0.175) 2MASS_J00222807+8549554 | 00:22:28.000 +85:49:55.00 | 2019-04-27T17:20:49 | 18.35(0.092) 2MASS_J00224102+8601575 | 00:22:41.000 +86:01:57.00 | 2019-04-27T17:16:57 | 18.75(0.060) 2MASS_J00240580+8413520 | 00:24:05.000 +84:13:52.00 | 2019-04-27T17:35:09 | 18.10(0.096) 2MASS_J00264523+8444573 | 00:26:45.000 +84:44:57.00 | 2019-04-27T18:51:44 | 17.91(0.079) 2MASS_J00282377+8606093 | 00:28:23.000 +86:06:09.00 | 2019-04-27T18:58:44 | 18.16(0.070) 2MASS_J00310187+8420369 | 00:31:01.000 +84:20:36.00 | 2019-04-27T19:08:19 | 17.94(0.067) 2MASS_J00373257+8410452 | 00:37:32.000 +84:10:45.00 | 2019-04-27T19:20:07 | 17.76(0.096) 2MASS_J00415229+8422560 | 00:41:52.000 +84:22:56.00 | 2019-04-27T15:01:47 | 19.03(0.073) 2MASS_J00430464+8800328 | 00:43:04.000 +88:00:32.00 | 2019-04-27T16:41:03 | 18.64(0.114) 2MASS_J00431317+8418363 | 00:43:13.000 +84:18:36.00 | 2019-04-27T15:17:08 | 14.75(0.039) 2MASS_J00432208+8527102 | 00:43:22.000 +85:27:10.00 | 2019-04-27T17:46:45 | 18.43(0.079) 2MASS_J00434058+8446222 | 00:43:40.000 +84:46:22.00 | 2019-04-27T16:47:22 | 18.44(0.043) 2MASS_J00460455+8539449 | 00:46:04.000 +85:39:44.00 | 2019-04-27T19:01:09 | 17.74(0.100) 2MASS_J00520371+8523325 | 00:52:03.000 +85:23:32.00 | 2019-04-27T15:45:58 | 18.94(0.048) 2MASS_J00553194+8500374 | 00:55:31.000 +85:00:37.00 | 2019-04-27T18:32:40 | 18.16(0.073) 2MASS_J00592185+8521346 | 00:59:21.000 +85:21:34.00 | 2019-04-27T16:37:05 | 18.75(0.069) 2MASS_J00592917+8732280 | 00:59:29.000 +87:32:28.00 | 2019-04-27T14:59:21 | 19.35(0.082) 2MASS_J01135181+8724333 | 01:13:51.000 +87:24:33.00 | 2019-04-27T17:13:04 | 18.68(0.077) 2MASS_J01150199+8620395 | 01:15:01.000 +86:20:39.00 | 2019-04-27T17:42:01 | 18.03(0.096) 2MASS_J01160660+8459035 | 01:16:06.000 +84:59:03.00 | 2019-04-27T15:13:48 | 15.42(0.039) 2MASS_J01215684+8458118 | 01:21:56.000 +84:58:11.00 | 2019-04-27T18:01:34 | 17.86(0.142) 2MASS_J01230987+8524108 | 01:23:09.000 +85:24:10.00 | 2019-04-27T15:56:04 | 18.81(0.060) 2MASS_J01264881+8506094 | 01:26:48.000 +85:06:09.00 | 2019-04-27T17:01:44 | 18.32(0.074) 2MASS_J01333891+8532521 | 01:33:38.000 +85:32:52.00 | 2019-04-27T16:16:55 | 18.42(0.079) 2MASS_J19321273+8812473 | 19:32:12.000 +88:12:47.00 | 2019-04-27T18:15:51 | 18.58(0.084) 2MASS_J20412914+8626330 | 20:41:29.000 +86:26:33.00 | 2019-04-27T17:27:13 | 19.07(0.039) 2MASS_J20441724+8654219 | 20:44:17.000 +86:54:21.00 | 2019-04-27T16:23:13 | 18.77(0.076) 2MASS_J20522972+8611119 | 20:52:29.000 +86:11:11.00 | 2019-04-27T16:44:59 | 19.11(0.078) 2MASS_J21213146+8713544 | 21:21:31.000 +87:13:54.00 | 2019-04-27T18:22:59 | 18.31(0.054) 2MASS_J22120284+8552027 | 22:12:02.000 +85:52:02.00 | 2019-04-27T15:06:35 | 17.53(0.136) 2MASS_J22470787+8450298 | 22:47:07.000 +84:50:29.00 | 2019-04-27T19:22:26 | 17.98(0.061) 2MASS_J22544273+8544285 | 22:54:42.000 +85:44:28.00 | 2019-04-27T18:35:00 | 20.51(0.039) 2MASS_J22582128+8648054 | 22:58:21.000 +86:48:05.00 | 2019-04-27T18:05:31 | 18.38(0.076) 2MASS_J23091312+8512017 | 23:09:13.000 +85:12:01.00 | 2019-04-27T18:49:24 | 17.94(0.104) 2MASS_J23151704+8433526 | 23:15:17.000 +84:33:52.00 | 2019-04-27T19:05:59 | 18.13(0.096) 2MASS_J23193319+8758310 | 23:19:33.000 +87:58:31.00 | 2019-04-27T15:34:19 | 18.47(0.077) 2MASS_J23252375+8752450 | 23:25:23.000 +87:52:45.00 | 2019-04-27T16:53:54 | 18.55(0.064) 2MASS_J23345217+8527335 | 23:34:52.000 +85:27:33.00 | 2019-04-27T18:56:24 | 17.92(0.075) 2MASS_J23505702+8511090 | 23:50:57.000 +85:11:09.00 | 2019-04-27T18:44:35 | 17.95(0.085) 2MASS_J23574733+8500029 | 23:57:47.000 +85:00:02.00 | 2019-04-27T14:11:17 | 18.85(0.039) [GCN OPS NOTE(07may19): Per author's request, the typo in the SUBJECT-line was changed from "25c" to "26c".]