Lightcurve of RMC 143. Historic photometry is displayed in grey, recent photometry by ASAS from 2000–2009 and ASAS-SN from 2014–2018 are displayed in black. The ASAS MAG_4 (6 pixel aperture) is used since smaller aperture contain many outliers due to background subtraction issues. We add 0.8 mag to correct the magnitude, following Walborn et al. (2017). We indicate the reported spectral types in blue. When no reference is given, the value has been obtained from Walborn et al. (2017).