CX137 = CXO GBSJ175553.2-281633 = OGLE BLG-ELL-12042 outburst
Yamamoto-san detected an outburst, which can be identified with the above source (identified by Yamamoto-san; crowded fielded and still waiting for accurate astrometry).
This object has a CV spectrum with ELL variation. Likely an outburst from a long-Porb, low mass-transfer CV.
YYYYMMDD(UT) mag observer 20221018.0161 16.052g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221018.0174 16.155g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221018.0186 16.760c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221018.0186 15.968g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221018.0218 16.741c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221018.0272 16.734c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221018.0372 16.765c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221020.0186 16.040g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221020.0199 15.903g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221020.0212 15.908g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221021.0128 15.862g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221021.0141 15.938g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221021.0153 <16.106g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221021.0377 16.792c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221021.0409 16.820c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221021.0468 16.768c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221021.0573 16.778c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221022.0122 15.867g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221022.0134 16.057g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221022.0146 15.908g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221023.0191 16.105g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221023.0203 16.137g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221023.0216 15.889g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221023.7673 16.035o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221023.7877 15.912o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221025.7776 <15.434g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221025.7788 <15.575g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221025.7800 <15.748g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221026.0056 16.517c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221026.0088 16.494c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221026.0142 16.608c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221026.0255 16.516c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221026.0367 15.821g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221026.0380 15.883g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221026.0393 <16.159g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221026.7961 16.371o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221026.7993 16.387o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221026.8072 16.468o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221026.8173 16.499o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221027.7476 <15.552g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221027.7488 <15.604g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221027.7501 <15.734g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221031.7564 16.280o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221031.7601 16.176o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221031.7657 16.213o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221031.7758 15.736o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221106.0088 16.644o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221106.0179 16.836o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221106.0283 16.626o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221108.7632 15.572o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221111.0100 15.853o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221111.0150 16.018o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221111.0245 15.974o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230204.3841 <15.478g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230204.3854 <15.678g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230205.3822 <15.174g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230205.3835 <15.340g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230206.3789 <15.374g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230206.3802 <15.469g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230206.3816 15.569g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230207.3745 15.477g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230207.3758 <15.692g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230207.3771 <15.589g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230209.3731 <15.670g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230209.3744 <15.633g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230209.3757 <15.738g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230210.3835 15.388g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230210.3847 <15.552g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230210.3860 <15.538g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230212.3423 14.911o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230212.3455 14.821o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230212.3586 14.807o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230212.3666 14.705g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230212.3679 14.665g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230212.3691 14.862g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230216.837 130c (Minoru Yamamoto)