XM solution around Gaia 16abo. Top: isolated group of detections (input of the clustering solution). Bottom: XM resolution. These plots use the same symbols as in Fig. 9. The detections with the green dot are the bright detections matched to one source, whereas the detections with the orange dot are the fainter detections matched to the other source as resolved for Gaia DR2. The isolated group of detections in the top panel includes 18 detections in the Gaia onboard magnitude range 17.78 <G < 20.70 and two source candidates with a magnitude G = 17.86 and G = 20.79. The XM solution creates a unique source with a magnitude G = 19.44 corresponding to the mean of the Gaia onboard magnitude detection.