SIMBAD references

Additional magnitudes for 2011hg (via unfiltered CCD unless noted otherwise): 1986 Nov. 3, [20.3 (Palomar Sky Survey J plate; via Ciabattari); 1989 July 13, [20.3 (Palomar Sky Survey F plate; via Ciabattari); 1989 July 13, [21 (red Palomar Sky Survey image, via Digitized Sky Survey; reported by Vitali Nevski, Vitebsk, Belarus); 2011 Oct. 29.955, 17.2 (A. Dimai, Italian Supernovae Search Project, 51-cm reflector); 29.976, R = 18.2 (Federica Luppi, Varese, Italy; 0.36-m f/7.9 reflector + Bessell R filter; position end figures 48s.80, 00".6; reference stars from CMC-14 catalogue; image posted at website URL http://www.astrogeo.va.it/pub/TOCP/PSN_U12410.jpg); 30.074, 18.1 (R. A. Koff, Bennett, CO, USA; Meade 0.25-m f/10 reflector + Apogee AP-47p CCD camera; position end figures 48s.73, 00".4; limiting mag 19.6; image scale 2"/pixel); 30.140, 18.0 (Joseph Brimacombe, Cairns, Australia; position end figures 48s.81, 00".4); 30.731, R = 18.0 (Nevski, 0.3-m reflector; position end figures 48s.80, 00".5; UCAC-3 catalogue; limiting mag 20.5). Brimacombe's image is posted at website URL http://www.flickr.com/photos/43846774@N02/6298160700/.