Page content updated: 2026:141:16:48:01 ( 12:48 PM Thu 21-May )

Key Snapshot and SOH Values (Δt = - 5:52)
Obsid31373
Format2_NORM
RadMonENAB
CPE StatusNORM
RA172.640
Dec-75.391
Roll282.494
Pitch116.66
Sim Z75241
Sim Focus-467
HETG angle77.59
LETG angle76.09
SCS 107INAC
SCS 128ACT
SCS 129ACT
SCS 130ACT
RadMonENAB
SCS 131ACT
SCS 132ACT
SCS 133ACT
Snapshot from 2026:141:10:55:58 (Δt = - 5:52)

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)
2026:141:05:46:26Maneuver to 220.59011 -17.22864 268.997 [2026:141:06:24:22]-11:01 1:46 AM Thu 21-May
2026:141:06:28:52Obsid: 32354 SI: ACIS-S (14 ksec) Target: NGC5728 -10:19 2:28 AM Thu 21-May
2026:141:10:00:00Comm pass on DSS-26 (duration 1:00)- 6:48 6:00 AM Thu 21-May
2026:141:10:32:12Maneuver to 16.13175 -72.04182 151.116 [2026:141:11:10:07]- 6:15 6:32 AM Thu 21-May
2026:141:11:14:37Obsid: 31373 SI: ACIS-S (15 ksec) Target: E0102-72.3 - 5:33 7:14 AM Thu 21-May
2026:141:15:24:37Maneuver to 15.81800 -71.95329 140.550 [2026:141:15:35:14]- 1:2311:24 AM Thu 21-May
2026:141:15:39:52Obsid: 31377 SI: ACIS-I (35 ksec) Target: E0102-72.3 - 1:0811:39 AM Thu 21-May
2026:141:16:48:01--------------- NOW --------------- 0:0012:48 PM Thu 21-May
2026:141:19:50:00Comm pass on DSS-65 (duration 1:00) 3:01 3:50 PM Thu 21-May
2026:142:01:20:12Load MAY1826A:CL142:0101 [2026:143:12:15:02] 8:32 9:20 PM Thu 21-May
2026:142:01:20:12Load MAY1826A:CL142:0101 [2026:143:12:15:02] 8:32 9:20 PM Thu 21-May
2026:142:01:23:12Maneuver to 222.33910 -32.72271 306.849 [2026:142:01:53:01] 8:35 9:23 PM Thu 21-May
2026:142:01:30:00Comm pass on DSS-65 (duration 1:00) 8:41 9:30 PM Thu 21-May
2026:142:01:57:31Obsid: 32349 SI: ACIS-S (16 ksec) Target: MASTER J1449-32 9:09 9:57 PM Thu 21-May
2026:142:06:32:31Maneuver to 207.06506 23.99736 217.511 [2026:142:07:06:15] 13:44 2:32 AM Fri 22-May
2026:142:07:10:45Obsid: 30511 SI: ACIS-I (31 ksec) Target: BOSS1348 14:22 3:10 AM Fri 22-May
2026:142:10:00:00Comm pass on DSS-24 (duration 1:00) 17:11 6:00 AM Fri 22-May
2026:142:15:58:18Maneuver to 235.97500 -16.17000 214.765 [2026:142:16:20:13] 23:1011:58 AM Fri 22-May
2026:142:16:01:52Grating: HETG 23:1312:01 PM Fri 22-May
2026:142:16:04:18RADMON Disable 23:1612:04 PM Fri 22-May
2026:142:16:24:43ER Obsid: 41471 (3 ksec) Purpose: Perigee Attitude 23:3612:24 PM Fri 22-May
2026:142:17:14:43Maneuver to 236.45000 -26.15000 335.830 [2026:142:17:52:38] 1d 00:26 1:14 PM Fri 22-May
2026:142:17:15:00Comm pass on DSS-34 (duration 1:00) 1d 00:26 1:15 PM Fri 22-May
2026:142:17:57:08ER Obsid: 41470 (3 ksec) Purpose: Perigee Attitude 1d 01:09 1:57 PM Fri 22-May
2026:142:18:47:08Maneuver to 81.56000 -36.83800 204.006 [2026:142:19:23:11] 1d 01:59 2:47 PM Fri 22-May
2026:142:19:27:41ER Obsid: 41469 (3 ksec) Purpose: Perigee Attitude 1d 02:39 3:27 PM Fri 22-May
2026:142:22:59:13Maneuver to 236.38100 -25.22800 329.210 [2026:142:23:35:30] 1d 06:11 6:59 PM Fri 22-May
2026:142:23:40:00ER Obsid: 41468 (3 ksec) Purpose: Perigee Attitude 1d 06:51 7:40 PM Fri 22-May
2026:143:00:30:00Comm pass on DSS-65 (duration 1:00) 1d 07:41 8:30 PM Fri 22-May
2026:143:00:30:00Maneuver to 239.00000 -15.90000 185.374 [2026:143:01:13:11] 1d 07:41 8:30 PM Fri 22-May
2026:143:01:17:41ER Obsid: 41467 (0 ksec) Purpose: Perigee Attitude 1d 08:29 9:17 PM Fri 22-May
2026:143:02:30:08Maneuver to 4.82567 59.11212 66.002 [2026:143:03:08:48] 1d 09:4210:30 PM Fri 22-May
2026:143:02:48:17RADMON Enable 1d 10:0010:48 PM Fri 22-May
2026:143:03:13:18Obsid: 32351 SI: ACIS-S (10 ksec) Target: TV Cassiopeia 1d 10:2511:13 PM Fri 22-May
2026:143:05:59:58Maneuver to 324.38396 -4.36503 110.158 [2026:143:06:27:23] 1d 13:11 1:59 AM Sat 23-May
2026:143:06:03:33Grating: NONE 1d 13:15 2:03 AM Sat 23-May
2026:143:06:31:53Obsid: 31222 SI: ACIS-S (50 ksec) Target: TDE2023mfm 1d 13:43 2:31 AM Sat 23-May
2026:143:10:45:00Comm pass on DSS-26 (duration 1:00) 1d 17:56 6:45 AM Sat 23-May
2026:143:18:30:00Comm pass on DSS-54 (duration 1:00) 2d 01:41 2:30 PM Sat 23-May
2026:143:18:30:00Load MAY1826A:CL143:1801 [2026:144:21:52:00] 2d 01:41 2:30 PM Sat 23-May
2026:143:18:30:00Load MAY1826A:CL143:1801 [2026:144:21:52:00] 2d 01:41 2:30 PM Sat 23-May
2026:143:20:25:13Maneuver to 46.83800 -70.08000 167.407 [2026:143:20:54:48] 2d 03:37 4:25 PM Sat 23-May
2026:143:20:59:18ER Obsid: 41466 (0 ksec) Purpose: Intermediate Attitud 2d 04:11 4:59 PM Sat 23-May
2026:143:21:14:59Maneuver to 237.95037 -26.36227 324.988 [2026:143:21:45:51] 2d 04:26 5:14 PM Sat 23-May
2026:143:21:50:21Obsid: 32350 SI: ACIS-S (20 ksec) Target: 2RXS J155154.5- 2d 05:02 5:50 PM Sat 23-May
2026:144:00:45:00Comm pass on DSS-56 (duration 1:00) 2d 07:56 8:45 PM Sat 23-May
2026:144:03:23:41Maneuver to 145.81348 10.42275 239.999 [2026:144:03:59:46] 2d 10:3511:23 PM Sat 23-May
2026:144:04:04:16Obsid: 31282 SI: ACIS-S (20 ksec) Target: SDSS J094314.26 2d 11:1612:04 AM Sun 24-May
2026:144:09:37:36Maneuver to 185.29496 18.38632 240.003 [2026:144:09:57:33] 2d 16:49 5:37 AM Sun 24-May
2026:144:10:02:53Obsid: 30166 SI: ACIS-S (30 ksec) Target: NGC4293 2d 17:14 6:02 AM Sun 24-May
2026:144:10:45:00Comm pass on DSS-24 (duration 1:00) 2d 17:56 6:45 AM Sun 24-May

CXO and GOES rates
CXOGOESLimit
HRC shield016250
HRC MCP611930
P4GM---0.04300
P41GM---0.008.47
CXO: from snapshot at 2026:141:10:55:58 (- 5:52)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:18   P4GM: - 0:18   P41GM: - 0:15
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux12.65000012000> 30
2hr avg flux10.25000012000> 30
Orbital fluence8.6x105---2.0x109---
ACE data from 2026:141:16:35:00 (- 0:13)
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 19/2100Z to 20/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 542 km/s at 20/0222Z. Total IMF reached 6 nT at 20/0158Z. The maximum southward component of Bz reached -5 nT at 19/2359Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1716 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (21 May), quiet to active levels on day two (22 May) and quiet levels on day three (23 May).
Solar ActivityAnalysis of Solar Active Regions and Activity from 19/2100Z to 20/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 4 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a slight chance for an M-class flare on day one (21 May) and expected to be low with a chance for M-class flares on days two and three (22 May, 23 May).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor