Near Earth Asteroid 2003 DZ15 will came close to Earth on July 30 at 00:47 UT at distance of 0.02 AU (around 9 Earth-Moon distances). It has an estimated diameter of 152 m. The asteroid is actually getting dimmer, currently magnitude 16.7 it reaches mag 18 at closest approach. The dimness will make this a bit of a challenge.
NEO 2003 DZ15 is only visible from the northern iTelescopes as it passes through Lyra, Draco and Ursa Major. It is moving moderately, so the tracking capability of the iTelescopes may be okay, but topocentric epheri would be best to make sure.
The asteroid is high enough to image from astronomical twilight to around midnight from Mayhill.
Close up view of 2003 DZ15 on the night of the 29th (30th UT). Each time point is 15 minutes. The Large rectangle is the field of view of iTelescope 14, small rectangle is the field of view of iTelecope 5.
While standard planetarium plotting may be sufficent, you may still like to work from topocentric coordinates. For topocentric ephemerides go to http://www.minorplanetcenter.net/iau/MPEph/MPEph.html
Nth America MPC Code - H06, Spain MPC Code - I89
The MPC one line elements are:
K03D15Z 22.3 0.15 K134I 241.21278 263.60648 141.99712 3.65212 0.4869160 0.73088738 1.2205879 4 E2013-O37 127 2 2003-2013 0.50 M-v 3Eh MPC 0000 2003 DZ15 20130720