  We report the serendipitous discovery of a large edge-on protoplanetary disk
associated with the infrared source IRAS 23077+6707. The disk's apparent size
in the Pan-STARRS (PS1) images is ~11", making this one of the largest known
disks on the sky. It is likely a young system, still surrounded by the envelope
which is very faint but still visible in the PS1 images in the northern part
(alternatively this structure could be filaments from the disk itself). We use
the PS1 magnitudes and other available photometric data to construct the
spectral energy distribution (SED) of the disk. An optical spectrum indicates
that the obscured star is hot, most likely late A. We adopt a distance of 300
pc for this object based on Gaia DR3 extinctions. We model the system using the
HOCHUNK3D radiative transfer software and find that the system is consistent
with a hot star of effective temperature 8000 K surrounded by a disk of size
1650 AU and mass 0.2 M_solar at inclination 82 degrees.
