A new overdensity of A-colored stars in distant parts of the Milky Way ’ s stellar halo , at a dereddened SDSS magnitude of g _ { 0 } = 20.3 , is presented .
Identification of associated variable RR Lyrae candidates supports the claim that these are blue horizontal branch stars .
The inferred distance of these stars from the Galactic center is 90 kpc , assuming the absolute magnitude of these stars is M _ { g _ { 0 } } = 0.7 and that the Sun is 8.5 kpc from the Galactic center .
The new tidal debris is within 10 kpc of same plane as other confirmed tidal debris from the disruption of the Sagittarius dwarf galaxy , and could be associated with the trailing tidal arm .
Distances to the Sagittarius stream estimated from M stars are about 13 \% 
smaller than our inferred distances .
The tidal debris has a width of at least 10 ^ { \circ } , and is traced for more than 20 ^ { \circ } across the sky .
The globular cluster NGC 2419 is located within the detected tidal debris , and may also have once been associated with the Sagittarius dwarf galaxy .