蟒蛇中恒星的视星等

Question

使用 Python，如何获得特定日期的特定恒星（例如 Algol）的视星等？

import datetime
from astroquery.simbad import Simbad
from astropy import coordinates
import astropy.units as u

now = datetime.datetime.now()

algol_coords = coordinates.SkyCoord.from_name('Algol')
# but this is not for a specific date...
result_table = Simbad.query_region(algol_coords, radius='0d0m10s')