TGCat VOTable service. For more information visit TGCat at http://tgcat.mit.edu or send inquiry to mki-tgcat@mit.edu. Table generated from tgcat query ID 157885_9743fe96e90cca61 . To view the HTML version of your query please see: http://tgcat.mit.edu/tgData.php?q=157885_9743fe96e90cca61 For questions/comments please see http://tgcat.mit.edu or write to mki-tgcat@mit.edu Chandra Observation ID ( see cxc.harvard.edu ) TGCat Preferred Object Designation Chandra Instrument ( ACIS/HRC ) Chandra Grating ( HETG/LETG ) Right Ascension Declination Observation Date YYYY-MM-DD HH:MM:SS Exposure Time

14457	4U 0513-40 (in NGC 1851)	HRC	LETG	78.52729	-40.04391	2013-07-13 22:51:55	108437
14456	4U 0513-40 (in NGC 1851)	HRC	LETG	78.52722	-40.04393	2013-07-09 02:25:15	90582
16430	Mrk 421	HRC	LETG	166.11375	38.20913	2014-06-26 12:07:38	10097.7
16429	Mrk 421	ACIS	LETG	166.11369	38.20895	2014-06-26 09:01:16	9520.58
16431	Mrk 421	ACIS	HETG	166.11377	38.20898	2014-06-26 15:06:23	14800.6