SDSS Data Release 9 (catalogs.sdssdr9)

Description

Data Release 9 of the SDSS project. More information about the catalog is available here.

This table is cross-matched with Gaia DR2 gaia_source table through gdr2.sdssdr9_best_neighbour reference table.

Columns

Name Type UCD Unit Description
sdssdr9_oid int meta.id Incremental integer identifier added for the purpose of cross referencing
obj_id char meta.id SDSS unique object identifier
thing_id long meta.id SDSS unique source identifier
ra double pos.eq.ra Angle[deg] Right Ascension of the object (ICRS)
dec double pos.eq.dec Angle[deg] Declination of the object (ICRS)
ra_error double stat.error
pos.eq.ra
Angle[arcsec] Mean error on right ascension
dec_error double stat.error
pos.eq.dec
Angle[arcsec] Mean error on declination
mjd double time.epoch Time[day] Modified Julian Date of observation
u_mag float phot.mag Magnitude[mag] Model magnitude in u filter
u_mag_error float stat.error
phot.mag
Magnitude[mag] Mean error on u_mag
g_mag float phot.mag Magnitude[mag] Model magnitude in g filter
g_mag_error float stat.error
phot.mag
Magnitude[mag] Mean error on g_mag
r_mag float phot.mag Magnitude[mag] Model magnitude in r filter
r_mag_error float stat.error
phot.mag
Magnitude[mag] Mean error on r_mag
i_mag float phot.mag Magnitude[mag] Model magnitude in i filter
i_mag_error float stat.error
phot.mag
Magnitude[mag] Mean error on i_mag
z_mag float phot.mag Magnitude[mag] Model magnitude in z filter
z_mag_error float stat.error
phot.mag
Magnitude[mag] Mean error on z_mag
objc_type int meta.code.class Type of object (galaxy=3, star=6)
clean_flag int meta.code.qual Clean photometry flag (clean,=1 unclean=0)