| name | value | description |
| QSO_HIZ | 0x00000001 | High-redshift (griz) QSO target |
| QSO_CAP | 0x00000002 | ugri-selected quasar at high Galactic latitude |
| QSO_SKIRT | 0x00000004 | ugri-selected quasar at low Galactic latitude |
| QSO_FIRST_CAP | 0x00000008 | FIRST source with stellar colors at high Galactic latitude |
| QSO_FIRST_SKIRT | 0x00000010 | FIRST source with stellar colors at low Galactic latitude |
| GALAXY_RED | 0x00000020 | Luminous Red Galaxy target (any criteria) |
| GALAXY | 0x00000040 | Main sample galaxy |
| GALAXY_BIG | 0x00000080 | Low-surface brightness main sample galaxy (mu50>23 in r-band) |
| GALAXY_BRIGHT_CORE | 0x00000100 | Galaxy targets who fail all the surface brightness selection limits but have r-band fiber magnitudes brighter than 19 |
| ROSAT_A | 0x00000200 | ROSAT All-Sky Survey match, also a radio source |
| ROSAT_B | 0x00000400 | ROSAT All-Sky Survey match, have SDSS colors of AGNs or quasars |
| ROSAT_C | 0x00000800 | ROSAT All-Sky Survey match, fall in a broad intermediate category that includes stars that are bright, moderately blue, or both |
| ROSAT_D | 0x00001000 | ROSAT All-Sky Survey match, are otherwise bright enough for SDSS spectroscopy |
| STAR_BHB | 0x00002000 | blue horizontal-branch stars |
| STAR_CARBON | 0x00004000 | dwarf and giant carbon stars |
| STAR_BROWN_DWARF | 0x00008000 | brown dwarfs (note this sample is tiled) |
| STAR_SUB_DWARF | 0x00010000 | low-luminosity subdwarfs |
| STAR_CATY_VAR | 0x00020000 | cataclysmic variables |
| STAR_RED_DWARF | 0x00040000 | red dwarfs |
| STAR_WHITE_DWARF | 0x00080000 | hot white dwarfs |
| SERENDIP_BLUE | 0x00100000 | lying outside the stellar locus in color space |
| SERENDIP_FIRST | 0x00200000 | coincident with FIRST sources but fainter than the equivalent in quasar target selection (also includes non-PSF sources |
| SERENDIP_RED | 0x00400000 | lying outside the stellar locus in color space |
| SERENDIP_DISTANT | 0x00800000 | lying outside the stellar locus in color space |
| SERENDIP_MANUAL | 0x01000000 | manual serendipity flag |
| QSO_FAINT | 0x02000000 | Stellar outlier; too faint or too bright to be targeted |
| GALAXY_RED_II | 0x04000000 | Luminous Red Galaxy target (Cut II criteria) |
| ROSAT_E | 0x08000000 | ROSAT All-Sky Survey match, but too faint or too bright for SDSS spectroscopy |
| STAR_PN | 0x10000000 | central stars of planetary nebulae |
| QSO_REJECT | 0x20000000 | Object in explicitly excluded region of color space, therefore not targeted at QSO |
| SOUTHERN_SURVEY | 0x80000000 | Set in primtarget if this is a special program target |