Simple Gaia query trouble

[dan-adi]

Hi, I am learning to use Gaia-astroquery. I've tried a simple query but it doesn't work. My attempt:

from astroquery.gaia import Gaia

query = Gaia.launch_job_async("SELECT ra,dec \
FROM gaiadr3.gaia_source \
WHERE source_id = 'M101'")

table = query.get_results()
print(table)

The error I'm getting:

HTTPError: Error 500:
null

How do I query for a single object?

[eerovaher]

The way you wrote your query does work, but only if you know what is the source id of the object you are interested in. You can often look up source ids (and more) from e.g. Simbad. But M101 is a galaxy and the Gaia catalog contains only point sources, so the closest to what you might have in mind would be something like

>>> from astropy.coordinates import SkyCoord
>>> from astroquery.gaia import Gaia
>>> query_results = Gaia.cone_search_async(SkyCoord.from_name("M101"), radius="0.1 deg", columns=["ra", "dec"])

[dan-adi]

table = query.get_results()

I understand, thank you very much.