Using photometry from Data Release 10 of the northern footprint of the Sloan Digital Sky Survey , we detect two new stellar streams with lengths of between 25 \arcdeg and 50 \arcdeg .
The streams , which we designate Hermus and Hyllus , are at distances of between 15 and 23 kpc from the Sun and pass primarily through Hercules and Corona Borealis .
Stars in the streams appear to be metal poor , with [ Fe/H ] \sim - 2.3 , though we can not rule out metallicities as high as [ Fe/H ] = -1.2 .
While Hermus passes within 1 \arcdeg ( in projection ) of the globular cluster NGC 6229 , a roughly one magnitude difference in distance modulus , combined with no signs of connecting with NGC 6229 ’ s Roche lobe , argue against any physical association between the two .
Though the two streams almost certainly had different progenitors , similarities in preliminary orbit estimates suggest that those progenitors may themselves have been a product of a single accretion event .