ToO Information

Request ID: 40473
Request Type: NEW
ToO Urgency: NEXT DAY
Proposal ID: 4152

Target Info

Target Name: GX 339-4
Target No.: 6673
Category: BLACK HOLES
Coordinates[J2000]: (255.70575, -48.78977)
Exp (ks): 40
Extended: N

Extent Size:

Background Restriction: N

Remarks:

Constraint Details

Monitor: Y

Criteria: We request the source to be observed once every 5 days with NICER, with an exposure of 8 ks per visit by NICER. The observations need to begin as immediately as possible (ideally, October 6th). The 1st, 3rd and 5th visits need to be contemporaneous with NuSTAR observations, with an exposure of 20 ks by NuSTAR.

Phase Dependent: N

Epoch:
Period:
Min:
Max:
Remarks:

Specific Time: N

Start:
End:
Remarks:

ToO: Y
Coordinate Observation: Y

Observatory: NUSTAR, HAWK-I
Description: The 1st, 3rd and 5th visits need to be contemporaneous with NuSTAR observations, with an exposure of 20 ks by NuSTAR. We have planned observations with the HAWK-I infrared observatory on October 12th and 13th from 00:00 - 01:00 UT and then on October 20th from 00:00-01:00 UT (Observer: Federico Vincentelli). We would appreciate if 2 of our 5 visits can be coordinated with the HAWK-I observations.

Uninterrupted: N

Justification:

Estimated Count Rate (cts s-1): 200.000

Requester Information

Name: MR. NAVIN SRIDHAR

Status

Request Date (UTC): 2021-10-06 21:14:03
Disposition: GO-preapproved

Date: 2021-10-08 17:37:03.878732
Reason:
Person:

Status: Complete

Date: 2021-10-28 15:34:52.326016
Person:

Misc

Note:

Target Details

Nearest Target No: 6281
Nearest Taget Name: GX_339-4
Separation (arcmin): 0.0006
Nearby Target (<3.0'): 2080[GX_339-4],6281[GX_339-4],6282[GX_339-4],6365[GX_339-4],6586[GX_339-4],6650[GX_339-4],6653[GX_339-4]
Referenced Target Catalogue: NICER2_Xray_Target_List_V29f.csv
Sun Angle: 50.8 deg at 2021:300:18:06:32 (UTC), 39.8 deg after 2 weeks

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