The target - Mrk 279 - is being observed by ACIS-S and the High Energy Transmission Grating (HETG) for 6 hours and 23 minutes. The observation started 3 hours ago and ends in 3 hours, and is part of the proposal A dramatic change in an agn. The target is located in the constellation Draco and is a Seyfert 1 Galaxy. More information on the target can be found at SIMBAD. See related observations: 24662, 24666, 24667.
This is an observation from a TOO (target of opportunity) proposal.