Here I report the appearance of a new nebula in the constellation Puppis. The nebula was discovered in archived DECam images from 2017 January. Additionally the central source shows an outburst between 2015 February and 2015 April in archived unWISE images. The outburst reached the current brightness in 2016 November (W1∼3.6 mag, W2∼1.5 mag). The pre-outburst images from the VST (2012 March) and PanSTARRS (2015 February) do not show any nebulosity around this source. The appearance of reflection nebulae overlapping with the outburst of the central source is known for pre-main sequence stars, such as FU Orionis variables. Follow-up spectroscopy is desired for the central source.

在这里，我报告了一个新的星云出现在星座小行星中。该星云是在2017年1月的DECam存档图像中发现的。此外，中央源还显示了在2015年2月至2015年4月之间在已存档的unWISE图像中爆发的情况。在2016年11月，爆发达到了目前的亮度（W 1〜3.6磁，W 2〜1.5磁）。VST（2012年3月）和PanSTARRS（2015年2月）的爆发前图像未显示该源周围的任何星云。对于主序前恒星，例如FU Orionis变星，反射星云的出现与中心源的爆发重叠是众所周知的。中央源需要后续的光谱学。