Page content updated: 2026:118:11:03:00 ( 7:03 AM Tue 28-Apr )

Key Snapshot and SOH Values (Δt = - 0:27)
Obsid32319
Format2_NORM
RadMonENAB
CPE StatusNORM
RA335.874
Dec-50.288
Roll117.031
Pitch82.41
Sim Z75624
Sim Focus-467
HETG angle77.59
LETG angle75.71
SCS 107INAC
SCS 128ACT
SCS 129ACT
SCS 130ACT
RadMonENAB
SCS 131ACT
SCS 132INAC
SCS 133ACT
Snapshot from 2026:118:10:35:30 (Δt = - 0:27)

acePred
NOW
Cursor date
Cursor delta
Next comm
Delta
Station
Activity
ACE fluence
ACE P3 flux
HRC proxy
--- Latest values ---
ACE P3 flux
ACE 2hr avg
HRC proxy
SIM-Z
Pitch
RA
Dec
Roll
PCAD
Obsid
SI
Grating
SI mode
Power cmd
CCD, FEP
Vid, Clock

Chandra Events (Load link unavailable)
Time (UT)EventDelta timeTime (Eastern)
2026:118:02:30:00Comm pass on DSS-56 (duration 1:00)- 8:3310:30 PM Mon 27-Apr
2026:118:02:56:16Maneuver to 220.59427 -17.28150 58.362 [2026:118:03:28:04]- 8:0610:56 PM Mon 27-Apr
2026:118:03:32:34Obsid: 32320 SI: ACIS-S (15 ksec) Target: NGC5728 - 7:3011:32 PM Mon 27-Apr
2026:118:07:50:54Maneuver to 335.86812 -50.28549 117.027 [2026:118:08:22:56]- 3:12 3:50 AM Tue 28-Apr
2026:118:08:27:26Obsid: 32319 SI: ACIS-S (22 ksec) Target: SPT-CLJ2223-501 - 2:35 4:27 AM Tue 28-Apr
2026:118:10:00:00Comm pass on DSS-26 (duration 1:00)- 1:03 6:00 AM Tue 28-Apr
2026:118:11:03:00--------------- NOW --------------- 0:00 7:03 AM Tue 28-Apr
2026:118:14:05:00Comm pass on DSS-24 (duration 0:45) 3:0210:05 AM Tue 28-Apr
2026:118:14:05:00Load APR2726A:CL118:1401 [2026:119:21:00:02] 3:0210:05 AM Tue 28-Apr
2026:118:14:05:00Load APR2726A:CL118:1401 [2026:119:21:00:02] 3:0210:05 AM Tue 28-Apr
2026:118:14:42:26Maneuver to 230.85116 12.69882 134.998 [2026:118:15:20:54] 3:3910:42 AM Tue 28-Apr
2026:118:15:25:24Obsid: 29883 SI: ACIS-S (10 ksec) Target: SDSS J152322.13 4:2211:25 AM Tue 28-Apr
2026:118:18:26:59Maneuver to 215.70000 -11.90000 182.138 [2026:118:18:50:09] 7:23 2:26 PM Tue 28-Apr
2026:118:18:30:33Grating: HETG 7:27 2:30 PM Tue 28-Apr
2026:118:18:32:36RADMON Disable 7:29 2:32 PM Tue 28-Apr
2026:118:18:54:39ER Obsid: 41528 (3 ksec) Purpose: Perigee Attitude 7:51 2:54 PM Tue 28-Apr
2026:118:20:15:34Maneuver to 8.00000 58.00000 37.225 [2026:118:20:55:30] 9:12 4:15 PM Tue 28-Apr
2026:118:21:00:00ER Obsid: 41527 (3 ksec) Purpose: Perigee Attitude 9:57 5:00 PM Tue 28-Apr
2026:118:23:04:42Maneuver to 51.70000 -30.95000 200.801 [2026:118:23:55:30] 12:01 7:04 PM Tue 28-Apr
2026:119:00:00:00ER Obsid: 41526 (3 ksec) Purpose: Perigee Attitude 12:57 8:00 PM Tue 28-Apr
2026:119:01:15:00Comm pass on DSS-34 (duration 1:00) 14:12 9:15 PM Tue 28-Apr
2026:119:01:20:23Maneuver to 205.00000 -36.00000 332.658 [2026:119:01:55:30] 14:17 9:20 PM Tue 28-Apr
2026:119:02:00:00ER Obsid: 41525 (3 ksec) Purpose: Perigee Attitude 14:5710:00 PM Tue 28-Apr
2026:119:03:20:23Maneuver to 51.70000 -30.95000 200.615 [2026:119:03:55:30] 16:1711:20 PM Tue 28-Apr
2026:119:04:00:00ER Obsid: 41524 (3 ksec) Purpose: Perigee Attitude 16:5712:00 AM Wed 29-Apr
2026:119:05:16:08Maneuver to 215.90000 -19.25000 340.000 [2026:119:05:55:30] 18:13 1:16 AM Wed 29-Apr
2026:119:06:00:00ER Obsid: 41523 (1 ksec) Purpose: Perigee Attitude 18:57 2:00 AM Wed 29-Apr
2026:119:06:49:34Maneuver to 50.68412 -37.09209 197.000 [2026:119:07:27:41] 19:46 2:49 AM Wed 29-Apr
2026:119:06:50:08Grating: NONE 19:47 2:50 AM Wed 29-Apr
2026:119:07:09:53RADMON Enable 20:06 3:09 AM Wed 29-Apr
2026:119:07:32:11Obsid: 31877 SI: ACIS-S (13 ksec) Target: NGC1317 20:29 3:32 AM Wed 29-Apr
2026:119:10:50:00Comm pass on DSS-26 (duration 1:00) 23:47 6:50 AM Wed 29-Apr
2026:119:11:17:11Maneuver to 149.92588 0.44645 254.175 [2026:119:11:50:04] 1d 00:14 7:17 AM Wed 29-Apr
2026:119:11:54:34Obsid: 31106 SI: ACIS-S (60 ksec) Target: EP260321a 1d 00:51 7:54 AM Wed 29-Apr
2026:119:19:30:00Comm pass on DSS-65 (duration 1:00) 1d 08:27 3:30 PM Wed 29-Apr
2026:120:03:00:00Comm pass on DSS-65 (duration 1:00) 1d 15:5711:00 PM Wed 29-Apr
2026:120:03:00:00Load APR2726A:CL120:0301 [2026:121:13:55:44] 1d 15:5711:00 PM Wed 29-Apr
2026:120:03:00:00Load APR2726A:CL120:0301 [2026:121:13:55:44] 1d 15:5711:00 PM Wed 29-Apr
2026:120:04:34:34Maneuver to 166.14913 38.24538 221.978 [2026:120:04:56:17] 1d 17:3112:34 AM Thu 30-Apr
2026:120:04:38:08Grating: LETG 1d 17:3512:38 AM Thu 30-Apr
2026:120:05:00:47Obsid: 31735 SI: ACIS-S (29 ksec) Target: MKN421 1d 17:57 1:00 AM Thu 30-Apr
2026:120:10:25:00Comm pass on DSS-24 (duration 1:00) 1d 23:22 6:25 AM Thu 30-Apr
2026:120:13:14:07Maneuver to 213.82089 -14.37843 263.895 [2026:120:13:44:04] 2d 02:11 9:14 AM Thu 30-Apr
2026:120:13:17:42Grating: NONE 2d 02:14 9:17 AM Thu 30-Apr
2026:120:13:48:34Obsid: 32317 SI: ACIS-I (13 ksec) Target: MOOJ1415-1422 2d 02:45 9:48 AM Thu 30-Apr
2026:120:17:25:14Maneuver to 149.81857 2.07389 253.324 [2026:120:17:50:47] 2d 06:22 1:25 PM Thu 30-Apr
2026:120:17:45:00Comm pass on DSS-36 (duration 1:00) 2d 06:42 1:45 PM Thu 30-Apr
2026:120:17:55:17Obsid: 30070 SI: ACIS-I (40 ksec) Target: Center of COSMO 2d 06:52 1:55 PM Thu 30-Apr
2026:121:03:00:00Comm pass on DSS-54 (duration 1:00) 2d 15:5711:00 PM Thu 30-Apr
2026:121:05:01:57Maneuver to 230.84170 12.70141 155.136 [2026:121:05:37:51] 2d 17:58 1:01 AM Fri 01-May
2026:121:05:42:21Obsid: 32318 SI: ACIS-S (19 ksec) Target: SDSS J152322.13 2d 18:39 1:42 AM Fri 01-May
2026:121:10:30:00Comm pass on DSS-26 (duration 1:00) 2d 23:27 6:30 AM Fri 01-May
2026:121:11:00:06Maneuver to 219.91000 -13.56000 148.000 [2026:121:11:17:16] 2d 23:57 7:00 AM Fri 01-May

CXO and GOES rates
CXOGOESLimit
HRC shield016250
HRC MCP484430
P4GM---0.03300
P41GM---0.008.47
CXO: from snapshot at 2026:118:10:35:30 (- 0:27)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:48   P4GM: - 0:48   P41GM: - 0:48
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux1605000012000> 30
2hr avg flux1595000012000> 30
Orbital fluence6.4x107---2.0x109---
ACE data from 2026:118:10:20:00 (- 0:43)
Orbital fluence: integrated attenuated ACE flux
Grating attenuation not factored into current or 2hr flux numbers
RADMON and SOT alert limits information

ACE particle rates ( MTA SWPC )

GOES particle rates

GOES proxy for HRC shield rates

3-day Solar-Geophysical Forecast
Geophysical ActivityGeophysical Activity Summary 26/2100Z to 27/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 490 km/s at 26/2217Z. Total IMF reached 6 nT at 27/0449Z. The maximum southward component of Bz reached -3 nT at 26/2103Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 373 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (28 Apr) and quiet to active levels on days two and three (29 Apr, 30 Apr). Protons have a slight chance of crossing threshold on days one, two, and three (28 Apr, 29 Apr, 30 Apr).
Solar ActivityAnalysis of Solar Active Regions and Activity from 26/2100Z to 27/2100Z: Solar activity has been at high levels for the past 24 hours. There are currently 6 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be moderate with a chance for X-class flares on days one, two, and three (28 Apr, 29 Apr, 30 Apr).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor