It seems to be a strand of dust. Dust occurs in some imagery in GE, Sky, Mars, and particularly Moon. For an explanation scroll to the bottom of THIS excellent post in the archives.
I've copied a part of the post by Markopolo below.
Remember, folks, the Google Sky data is a wonderful, amazing collection of astronomical imagery which would have seemed completely unimaginable as little as 50 years ago. But it is a human enterprise, ultimately, with human beings involved at every step of the process. Below is a picture of astrophysicist Dr. Miriam Rengel, who has given me permission to use the picture to illustrate the process of digitizing a photographic plate. You can see her using a paintbrush to clean the photographic plate prior to placing it in the digitizer machine in the background. It's obviously not a "clean room" process, and it is surely possible for lint, dust, fingerprints, scratches, or any of a variety of other extraneous material to get into the digitized image.
If a Data Error, where is the light source coming from?
No Link to SIMBAD
If you are talking about the little bright dot directly beneath your placemark, it's an uncatalogued star. There are literally billions of stars that don't appear in Simbad. In the image below, every star you can see except two are uncatalogued. The only reason the two appear in Simbad is because they're radio sources.
There is no reason to catalog every dim and distant star.
"Other job markets may lay claim to the title, but astronomy is actually the world's oldest profession." - Phil Plait