Could this be a voorwerp?

https://www.legacysurvey.org//viewer/?ra=344.2180&dec=1.0659&layer=hsc-dr2&zoom=16

The galaxy has an AGN, and this fuzzy, dim green streak is nearby.

1 Like

DR3 gives a better view:
image

No voorwerp for me. Likely a background galaxy.

What is DR3?

The 3rd data release of HSC. The image you posted is from their 2nd data release.

I don’t see DR3 in the viewer

It’s not in the viewer yet.