ToO Information
Request ID: 54162
Request Type: NEW
ToO Urgency: NEXT DAY
Proposal ID:
Target Info
Target Name: 4U 1755-338
Target No.: 5106
Category: X-RAY BINARIES
Coordinates[J2000]: (269.66667, -33.80750)
Exp (ks): 40
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: 2025-04-04 05:28 UTC
End: 2025-04-07 00:00 UTC
Remarks: We propose this ToO as simultaneous observation with AstroSat. As AstroSat will be observing 4U 1755-338 from 2025-03-31 (06:23:13.0): MJD=60765.0000 to 2025-04-07 23:55:00.0 (MJD=60772.0000).
ToO: Y
Coordinate Observation: Y
Observatory: ASTROSAT
Description: We propose this ToO as simultaneous observation with AstroSat. As AstroSat will be observing 4U 1755-338 from 2025-03-31 (06:23:13.0): MJD=60765.0000 to 2025-04-07 23:55:00.0 (MJD=60772.0000). A joint NICER and AstroSat observation can strengthen the results, as both the detectors have excellent timing resolution and provide a broad-band spectral study, which can help to understand accretion dyna
Uninterrupted: N
Justification:
Estimated Count Rate (cts s-1): 700.000
Requester Information
Name: MR. ARBIND PRADHAN
Status
Request Date (UTC): 2025-04-04 06:31:36
Disposition: Accepted
Date: 2025-04-04T21:30:08
Reason:
Person: Auto
Status: Complete
Date: 2025-04-11 14:22:18.251722
Person:
Misc
Note:
Target Details
Nearest Target No: 6602
Nearest Taget Name: H_1755-338
Separation (arcmin): 0.0362
Nearby Target (<3.0'): 5106[H_1755-338],6602[H_1755-338]
Referenced Target Catalogue: /Home/eud/nicerweb/too/ags/NICER2_Xray_Target_List_V42y.csv.gz
Sun Angle: 110.7 deg at 2025:100:18:24:24 (UTC), 124.1 deg after 2 weeks
Planned Observations
AGS6 Reference: AGS6_STSCH_schedule_20250941800_20251080000_V01.txt.gz,AGS6_STSCH_schedule_20250971400_20251121200_V03.txt.gz,AGS6_STSCH_schedule_20250981700_20251121200_V01.txt.gz,AGS6_STSCH_schedule_20250991900_20251141200_V02.txt.gz,AGS6_STSCH_schedule_20251001700_20251141200_V01.txt.gz
Planned Snapshots:
| Observation Start |
Observation End |
Span |
Mode |
Observation ID |
| (YYYY-DDDTHH:MM:SS) |
(YYYY-DDDTHH:MM:SS) |
(seconds) |
Man/Opt |
|
| 2025-095T01:31:21 |
2025-095T01:43:00 |
699 |
Mandatory |
99999999 |
| 2025-095T10:51:39 |
2025-095T10:59:00 |
441 |
Mandatory |
99999999 |
| 2025-095T15:26:42 |
2025-095T15:37:00 |
618 |
Mandatory |
99999999 |
| 2025-095T21:36:40 |
2025-095T21:47:40 |
660 |
Mandatory |
99999999 |
| 2025-096T00:43:25 |
2025-096T00:53:00 |
575 |
Mandatory |
99999999 |
| 2025-096T14:17:52 |
2025-096T14:33:40 |
948 |
Mandatory |
99999999 |
| 2025-096T18:57:32 |
2025-096T19:11:00 |
808 |
Mandatory |
99999999 |
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 |