ToO Information

Request ID: 38964
Request Type: NEW
ToO Urgency: WITHIN A WEEK
Proposal ID: 3058

Target Info

Target Name: GX 339-4
Target No.: 6365
Category: X-RAY BINARIES
Coordinates[J2000]: (255.70575, -48.78976)
Exp (ks): 4
Extended: N

Extent Size:

Background Restriction: N

Remarks:

Constraint Details

Monitor: N

Criteria:

Phase Dependent: N

Epoch:
Period:
Min:
Max:
Remarks:

Specific Time: Y

Start: 2021-03-08 00:00 UTC
End: 2021-03-08 03:07 UTC
Remarks: NICER already has this target in planned schedule until 2021-03-09 on a daily cadence. On March 8 (DOY67, MJD 59281) NICER + NuSTAR + ULTRACAM coordinated observations will take place from 5:30-9:30 UT. With the SALT team joining the program, it would be best that on that date, NICER could also cover 00:00-03:00 UT (MJD 59281 to 59281.13), due to the visibility constraint of SALT.

ToO: Y
Coordinate Observation: Y

Observatory: NuSTAR + SALT ULTRACAM
Description: Members of our team requested and were approved NuSTAR DDT, so NuSTAR is likely to be carrying out several observations of GX 339-4 in the same timeframe as our campaign. We request, when possible, that NICER tries to achieve some overlapping coverage given the complementary nature of the instruments which is beneficial for both spectral and timing analysis.

Uninterrupted: N

Justification:

Estimated Count Rate (cts s-1): 1000.000

Requester Information

Name: MS. JINGYI WANG

Status

Request Date (UTC): 2021-03-01 23:01:49
Disposition: GO-preapproved

Date: 2022-01-13 22:18:01.243514
Reason:
Person:

Status: Complete

Date: 2022-01-13 22:18:01.243514
Person:

Misc

Note: 4ks obs on DOY 67 5:30-9:30 UT and DOY 67 00:00-03:00 UT.

Target Details

Nearest Target No:
Nearest Taget Name:
Separation (arcmin):
Nearby Target (<3.0'):
Referenced Target Catalogue:
Sun Angle: No Data

Planned Observations

AGS6 Reference:
Planned Snapshots:

Observation Start	Observation End	Span	Mode	Observation ID
(YYYY-DDDTHH:MM:SS)	(YYYY-DDDTHH:MM:SS)	(seconds)	Man/Opt

Visibility

AGS3 Reference:
Visibility Report:

Target Name	Target ID	Visibility Start	Visibility End	Span	Initial	Final	Relative
		(YYYY-DDDTHH:MM:SS)	(YYYY-DDDTHH:MM:SS)	(seconds)	Interference	Interference	Orbits