NEO 2014 DX110 as seen from New Mexico at 3:00 am 5 March (10:00 UT 5Mar). The crosses mark the position of the asteroid every 5 minutes, the large rectangle is the field of view of T14 and the small that of T5. click to embiggen.
Near Earth Asteroid 2014 DX110 will come close to Earth on 21:00 UT 5 March at distance of 0.0023 AU (around 0.9 Earth-Moon distances). It has an estimated diameter of 31m. The asteroid is currently magnitude 15.4, and will be mag 15.0 at closest approach. 60 second exposures may be reasonable but there will be substantial trailing, shorter exposures may be too dim.
NEO 2014 DX110 is visible for a brief time from from the northern iTelescopes as it passes through Cancer and Lynx. The asteroid is visible from 3:00 am to astronomical twilight in the morning of the 5 March. It is moving very fast (117.10"/min), and is outside the reach of the tracking capability of the iTelescopes. You will need to use a topocentric ephemeris and camp out on the asteroid track.
The asteroid goes from magnitude 15.4 to 15.0, but Mayhill misses out on closest approach which occurs after dawn.
There is a substantial parallax effect (> 1 degree), so unless your planetarium program is able to cope with close parallax (most can't), you will need 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.
You will need to use unguided exposures. Choose a point where the asteroid will pass and aim at that. Remember that it takes time for the iTelescopes scopes to get to tracking position. T14 can take up to 5 minutes (depending on there being reliable stars in the field for tracking, check you logs to see what the average slew time is), so offset you initial position by around 4 minutes or so (this will be a significant distance) so the asteroid will be in field. The asteroid will cross the T5 FOV in about 10 minutes.