ARG0003a3z - you don't see this very often
The host of this somewhat asymmetric doublelobe is, perhaps, z_ph 0.217±0.1325/0.360±0.1445 SDSS J211215.39+073108.4, an odd-looking green smudge:
There's rather a lot of green stuff about, in the SDSS image, so maybe SDSS J211215.39+073108.4 is just a local enhancement? And what is the green stuff anyway?
Zoom out and it become clear:
It's a foreground - within our own galaxy - nebula! 😮 😄
Question: is it a reflection nebula (starlight reflecting off dust)? Or an HII nebula (the green is H-alpha emission)? Or ... ?