Page content updated: 2026:143:19:28:00 ( 3:28 PM Sat 23-May )

Key Snapshot and SOH Values (Δt = - 0:02)
Obsid31222
Format2_NORM
RadMonENAB
CPE StatusNORM
RA324.380
Dec-4.366
Roll110.157
Pitch96.26
Sim Z75623
Sim Focus-467
HETG angle77.59
LETG angle76.09
SCS 107INAC
SCS 128INAC
SCS 129ACT
SCS 130ACT
RadMonENAB
SCS 131INAC
SCS 132ACT
SCS 133ACT
Snapshot from 2026:143:19:25:18 (Δt = - 0:02)

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)
2026:143:10:45:00Comm pass on DSS-26 (duration 1:00)- 8:43 6:45 AM Sat 23-May
2026:143:18:30:00Comm pass on DSS-54 (duration 1:00)- 0:58 2:30 PM Sat 23-May
2026:143:18:30:00Load MAY1826A:CL143:1801 [2026:144:21:52:00]- 0:58 2:30 PM Sat 23-May
2026:143:18:30:00Load MAY1826A:CL143:1801 [2026:144:21:52:00]- 0:58 2:30 PM Sat 23-May
2026:143:19:28:00--------------- NOW --------------- 0:00 3:28 PM Sat 23-May
2026:143:20:25:13Maneuver to 46.83800 -70.08000 167.407 [2026:143:20:54:48] 0:57 4:25 PM Sat 23-May
2026:143:20:59:18ER Obsid: 41466 (0 ksec) Purpose: Intermediate Attitud 1:31 4:59 PM Sat 23-May
2026:143:21:14:59Maneuver to 237.95037 -26.36227 324.988 [2026:143:21:45:51] 1:46 5:14 PM Sat 23-May
2026:143:21:50:21Obsid: 32350 SI: ACIS-S (20 ksec) Target: 2RXS J155154.5- 2:22 5:50 PM Sat 23-May
2026:144:00:45:00Comm pass on DSS-56 (duration 1:00) 5:17 8:45 PM Sat 23-May
2026:144:03:23:41Maneuver to 145.81348 10.42275 239.999 [2026:144:03:59:46] 7:5511:23 PM Sat 23-May
2026:144:04:04:16Obsid: 31282 SI: ACIS-S (20 ksec) Target: SDSS J094314.26 8:3612:04 AM Sun 24-May
2026:144:09:37:36Maneuver to 185.29496 18.38632 240.003 [2026:144:09:57:33] 14:09 5:37 AM Sun 24-May
2026:144:10:02:53Obsid: 30166 SI: ACIS-S (30 ksec) Target: NGC4293 14:34 6:02 AM Sun 24-May
2026:144:10:45:00Comm pass on DSS-24 (duration 1:00) 15:17 6:45 AM Sun 24-May
2026:144:18:22:53Maneuver to 243.23675 -5.34909 173.026 [2026:144:18:52:30] 22:54 2:22 PM Sun 24-May
2026:144:18:30:00Comm pass on DSS-36 (duration 1:00) 23:02 2:30 PM Sun 24-May
2026:144:18:57:00Obsid: 32348 SI: ACIS-S (10 ksec) Target: 2MASX J16125120 23:29 2:57 PM Sun 24-May
2026:144:21:49:00Load MAY2526A:CL144:2103 [2026:146:06:08:56] 1d 02:21 5:49 PM Sun 24-May
2026:144:21:49:00Load MAY2526A:CL144:2103 [2026:146:06:08:56] 1d 02:21 5:49 PM Sun 24-May
2026:144:21:52:00Maneuver to 172.46428 35.80836 240.943 [2026:144:22:22:37] 1d 02:24 5:52 PM Sun 24-May
2026:144:22:27:07Obsid: 29759 SI: ACIS-S (2 ksec) Target: 1eRASS J112950. 1d 02:59 6:27 PM Sun 24-May
2026:144:23:03:47Maneuver to 149.81969 2.07495 249.245 [2026:144:23:23:36] 1d 03:35 7:03 PM Sun 24-May
2026:144:23:29:04Obsid: 30269 SI: ACIS-I (27 ksec) Target: Center of COSMO 1d 04:01 7:29 PM Sun 24-May
2026:145:01:00:00Comm pass on DSS-65 (duration 1:00) 1d 05:32 9:00 PM Sun 24-May
2026:145:07:09:52Maneuver to 239.00000 -21.00000 271.870 [2026:145:07:40:52] 1d 11:41 3:09 AM Mon 25-May
2026:145:07:13:26Grating: HETG 1d 11:45 3:13 AM Mon 25-May
2026:145:07:15:52RADMON Disable 1d 11:47 3:15 AM Mon 25-May
2026:145:07:45:22ER Obsid: 41465 (3 ksec) Purpose: Perigee Attitude 1d 12:17 3:45 AM Mon 25-May
2026:145:10:15:33Maneuver to 104.00000 -4.00000 237.126 [2026:145:10:55:30] 1d 14:47 6:15 AM Mon 25-May
2026:145:10:50:00Comm pass on DSS-26 (duration 1:00) 1d 15:22 6:50 AM Mon 25-May
2026:145:11:00:00ER Obsid: 41464 (3 ksec) Purpose: Perigee Attitude 1d 15:32 7:00 AM Mon 25-May
2026:145:13:23:01Maneuver to 205.00000 -35.00000 283.482 [2026:145:13:55:30] 1d 17:55 9:23 AM Mon 25-May
2026:145:14:00:00ER Obsid: 41463 (3 ksec) Purpose: Perigee Attitude 1d 18:3210:00 AM Mon 25-May
2026:145:15:03:01Maneuver to 104.00000 -4.00000 236.998 [2026:145:15:35:30] 1d 19:3511:03 AM Mon 25-May
2026:145:15:40:00ER Obsid: 41462 (1 ksec) Purpose: Perigee Attitude 1d 20:1211:40 AM Mon 25-May
2026:145:16:25:00Comm pass on DSS-56 (duration 1:00) 1d 20:5712:25 PM Mon 25-May
2026:145:16:42:38Maneuver to 13.90000 6.30000 112.409 [2026:145:17:25:30] 1d 21:1412:42 PM Mon 25-May
2026:145:17:30:00ER Obsid: 41461 (1 ksec) Purpose: Perigee Attitude 1d 22:02 1:30 PM Mon 25-May
2026:145:17:58:42Maneuver to 267.19329 -27.19237 80.141 [2026:145:18:33:38] 1d 22:30 1:58 PM Mon 25-May
2026:145:17:59:16Grating: NONE 1d 22:31 1:59 PM Mon 25-May
2026:145:18:19:51RADMON Enable 1d 22:51 2:19 PM Mon 25-May
2026:145:18:38:08Obsid: 30131 SI: ACIS-S (15 ksec) Target: SNR G1.9+0.3 1d 23:10 2:38 PM Mon 25-May
2026:145:22:48:08Maneuver to 15.94551 -72.00008 136.865 [2026:145:23:16:51] 2d 03:20 6:48 PM Mon 25-May
2026:145:23:21:21Obsid: 31374 SI: ACIS-S (22 ksec) Target: E0102-72.3 2d 03:53 7:21 PM Mon 25-May
2026:146:00:00:00Comm pass on DSS-54 (duration 1:00) 2d 04:32 8:00 PM Mon 25-May
2026:146:05:28:01Maneuver to 267.19310 -27.19218 79.884 [2026:146:05:56:41] 2d 10:00 1:28 AM Tue 26-May
2026:146:06:01:11Obsid: 32360 SI: ACIS-S (13 ksec) Target: SNR G1.9+0.3 2d 10:33 2:01 AM Tue 26-May
2026:146:09:34:51Load MAY2526A:CL146:0903 [2026:147:20:30:14] 2d 14:06 5:34 AM Tue 26-May
2026:146:09:34:51Load MAY2526A:CL146:0903 [2026:147:20:30:14] 2d 14:06 5:34 AM Tue 26-May
2026:146:09:37:51Maneuver to 15.94045 -71.99875 136.446 [2026:146:10:06:34] 2d 14:09 5:37 AM Tue 26-May
2026:146:10:00:00Comm pass on DSS-24 (duration 1:00) 2d 14:32 6:00 AM Tue 26-May
2026:146:10:11:04Obsid: 31375 SI: ACIS-S (19 ksec) Target: E0102-72.3 2d 14:43 6:11 AM Tue 26-May
2026:146:15:40:43Maneuver to 202.11125 -31.57660 275.781 [2026:146:16:11:19] 2d 20:1211:40 AM Tue 26-May
2026:146:16:15:49Obsid: 30417 SI: ACIS-I (10 ksec) Target: Abell 3558 SE 2d 20:4712:15 PM Tue 26-May
2026:146:19:02:29Maneuver to 199.09681 29.11693 225.439 [2026:146:19:30:40] 2d 23:34 3:02 PM Tue 26-May
2026:146:19:06:04Grating: LETG 2d 23:38 3:06 PM Tue 26-May

CXO and GOES rates
CXOGOESLimit
HRC shield017250
HRC MCP484430
P4GM---0.06300
P41GM---0.018.47
CXO: from snapshot at 2026:143:19:25:18 (- 0:02)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:18   P4GM: - 0:18   P41GM: - 0:18
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux11.15000012000> 30
2hr avg flux11.15000012000> 30
Orbital fluence6.6x105---2.0x109---
ACE data from 2026:143:19:15:00 (- 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 21/2100Z to 22/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 433 km/s at 22/0022Z. Total IMF reached 7 nT at 22/0249Z. The maximum southward component of Bz reached -4 nT at 21/2234Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 3762 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (23 May) and quiet levels on days two and three (24 May, 25 May).
Solar ActivityAnalysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: Solar activity has been at moderate 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 chance for M-class flares on days one, two, and three (23 May, 24 May, 25 May).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor