ToO Information
Request ID: 40476
Request Type: NEW
ToO Urgency: NEXT BUSINESS DAY
Proposal ID: 4180
Target Info
Target Name: 4U 1820-30
Target No.: 6615
Category: X-RAY BINARIES
Coordinates[J2000]: (275.91904, -30.36128)
Exp (ks): 200
Extended: N
Extent Size:
Background Restriction: N
Remarks:
Constraint Details
Monitor: N
Criteria:
Phase Dependent: N
Epoch:
Period:
Min:
Max:
Remarks:
Specific Time: N
Start:
End:
Remarks:
ToO: Y
Coordinate Observation: N
Observatory:
Description:
Uninterrupted: Y
Justification: We request as much as possible continuous exposure so as to get a good estimate of the burst recurrence time.
Estimated Count Rate (cts s-1): 20000.000
Requester Information
Name: DR. JEROME CHENEVEZ
Status
Request Date (UTC): 2021-10-10 17:04:05
Disposition: GO-preapproved
Date: 2021-10-11 15:53:27.933060
Reason:
Person:
Status: Complete
Date: 2021-11-15 18:37:05.744949
Person:
Misc
Note:
Target Details
Nearest Target No: 2405
Nearest Taget Name: 4U_1820-30
Separation (arcmin): 0.0002
Nearby Target (<3.0'): 2405[4U_1820-30],6309[4U_1820-30],6612[4U_1820-30],6613[4U_1820-30],6614[4U_1820-30],6615[4U_1820-30]
Referenced Target Catalogue: NICER2_Xray_Target_List_V29h.csv
Sun Angle: 44.9 deg at 2021:317:04:20:59 (UTC), 31.0 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 |