Swift MOC
Home Target of Opportunity Observations BAT XRT UVOT

Swift Target of Opportunity Request Summary

Below we summarize details for a given TOO request. Note not all details of the TOO request are made public.

TOO request for GX 339-4


RequesterDel Santo
Time Submitted2024-03-08 06:05:38
UrgencyHigh Urgency (observation needed within 24 hours)
Object NameGX 339-4
Type or ClassificationX-Ray Transient
Right Ascension (J2000)255.70575 (= 17h 02m 49.0s)
Declination (J2000)-48.78977 (= -48° 47' 23.0'')
Position Error (90% confidence - arcminutes)0.5
Science Justification
Exposure Time per Visit (s)1500
Number of Visits3
Total Exposure (s)4500
Immediate Objective
UVOT Mode0x9999: Default (Filter of the day)
Primary Target ID14052

Below are tentative scheduling windows for this ToO request. Note that the 'Observed Time' is just an approximation for your convenience and may not be complete. Please check the online version of the Swift schedule for the full listing of observed times.

#Window StartWindow StopXRT
Exposure (s)Observed
Time (s)
12024-03-09 00:00:002024-03-10 00:00:00WT0x999915001400
22024-03-10 00:00:002024-03-11 00:00:00WT0x999915000
32024-03-11 00:00:002024-03-12 00:00:00WT0x99991500940

Swift Mission Operations Center

The Pennsylvania State University
301 Science Park Road,
Building 2 Suite 332,
State College, PA 16801
☎ +1 (814) 865-6834
📧 swiftods@swift.psu.edu

Swift MOC Team Leads

Mission Director: John Nousek
Science Operations: Jamie Kennea
Flight Operations: Mark Hilliard
UVOT: Michael Siegel
XRT: Jamie Kennea