V1830 Sgr outburst Although the object is likely a UGSS star as judged from the outburst pattern, the large outburst amplitude would make it a potentially interesting target for further photometric study. A few hours time-series photometry would be recommended. YYYYMMDD(UT) mag observer 20020522.772 <140 (Rod Stubbings) 20020523.499 <128 (Rod Stubbings) 20020524.481 <135 (Peter Nelson) 20020531.616 <130 (Rod Stubbings) 20020601.423 <130 (Rod Stubbings) 20020602.494 127 (Rod Stubbings) 20020602.503 127 (Rod Stubbings)