Page content updated: 2026:151:17:25:00 ( 1:25 PM Sun 31-May )

Key Snapshot and SOH Values (Δt = - 6:28)
Obsid32366
Format2_NORM
RadMonENAB
CPE StatusNORM
RA258.241
Dec64.065
Roll170.335
Pitch93.47
Sim Z92903
Sim Focus-535
HETG angle77.59
LETG angle76.09
SCS 107INAC
SCS 128ACT
SCS 129ACT
SCS 130INAC
RadMonENAB
SCS 131ACT
SCS 132ACT
SCS 133INAC
Snapshot from 2026:151:10:56:16 (Δt = - 6:28)

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)
2026:151:07:17:46Maneuver to 258.24587 64.06149 170.331 [2026:151:07:44:55]-10:07 3:17 AM Sun 31-May
2026:151:07:49:25Obsid: 32366 SI: ACIS-I (20 ksec) Target: Abell 2255 - 9:35 3:49 AM Sun 31-May
2026:151:10:00:00Comm pass on DSS-26 (duration 1:00)- 7:25 6:00 AM Sun 31-May
2026:151:13:22:45Maneuver to 304.91011 38.71980 128.075 [2026:151:13:42:01]- 4:02 9:22 AM Sun 31-May
2026:151:13:26:19Grating: HETG- 3:58 9:26 AM Sun 31-May
2026:151:13:53:30Obsid: 31522 SI: ACIS-S (31 ksec) Target: V444 Cyg - 3:31 9:53 AM Sun 31-May
2026:151:17:25:00--------------- NOW --------------- 0:00 1:25 PM Sun 31-May
2026:151:17:45:00Comm pass on DSS-56 (duration 1:00) 0:20 1:45 PM Sun 31-May
2026:151:22:27:10Load JUN0126A:CL151:2201 [2026:153:07:08:30] 5:02 6:27 PM Sun 31-May
2026:151:22:27:10Load JUN0126A:CL151:2201 [2026:153:07:08:30] 5:02 6:27 PM Sun 31-May
2026:151:22:30:10Maneuver to 267.19104 -27.18807 78.002 [2026:151:23:01:13] 5:05 6:30 PM Sun 31-May
2026:151:22:33:45Grating: NONE 5:08 6:33 PM Sun 31-May
2026:151:23:05:43Obsid: 30126 SI: ACIS-S (10 ksec) Target: SNR G1.9+0.3 5:40 7:05 PM Sun 31-May
2026:152:01:57:23Maneuver to 132.99447 -65.96333 227.019 [2026:152:02:33:40] 8:32 9:57 PM Sun 31-May
2026:152:02:00:00Comm pass on DSS-24 (duration 1:00) 8:3510:00 PM Sun 31-May
2026:152:02:38:10Obsid: 32368 SI: ACIS-S (20 ksec) Target: EP260302a 9:1310:38 PM Sun 31-May
2026:152:08:11:30Maneuver to 267.18469 -27.18844 62.999 [2026:152:08:45:44] 14:46 4:11 AM Mon 01-Jun
2026:152:08:50:14Obsid: 32242 SI: ACIS-S (11 ksec) Target: SNR G1.9+0.3 15:25 4:50 AM Mon 01-Jun
2026:152:11:53:34Maneuver to 132.98494 -65.96164 237.755 [2026:152:12:26:30] 18:28 7:53 AM Mon 01-Jun
2026:152:12:31:00Obsid: 32377 SI: ACIS-S (23 ksec) Target: EP260302a 19:06 8:31 AM Mon 01-Jun
2026:152:13:10:00Comm pass on DSS-36 (duration 1:00) 19:45 9:10 AM Mon 01-Jun
2026:152:19:02:40Maneuver to 65.35635 -31.63055 170.013 [2026:152:19:25:35] 1d 01:37 3:02 PM Mon 01-Jun
2026:152:19:30:05Obsid: 31449 SI: ACIS-S (5 ksec) Target: 6dFJ0421194-313 1d 02:05 3:30 PM Mon 01-Jun
2026:152:20:00:00Comm pass on DSS-65 (duration 1:00) 1d 02:35 4:00 PM Mon 01-Jun
2026:152:21:01:45Maneuver to 247.96554 -47.37541 356.705 [2026:152:21:35:12] 1d 03:36 5:01 PM Mon 01-Jun
2026:152:21:39:42Obsid: 30535 SI: ACIS-S (28 ksec) Target: PWN J1631-4721 1d 04:14 5:39 PM Mon 01-Jun
2026:153:03:00:00Comm pass on DSS-56 (duration 1:00) 1d 09:3511:00 PM Mon 01-Jun
2026:153:05:29:06Maneuver to 251.63727 -24.63965 33.744 [2026:153:05:49:20] 1d 12:04 1:29 AM Tue 02-Jun
2026:153:05:32:40Grating: HETG 1d 12:07 1:32 AM Tue 02-Jun
2026:153:05:34:43RADMON Disable 1d 12:09 1:34 AM Tue 02-Jun
2026:153:05:53:50ER Obsid: 41449 (3 ksec) Purpose: Perigee Attitude 1d 12:28 1:53 AM Tue 02-Jun
2026:153:06:43:50Maneuver to 253.84994 -21.87093 94.948 [2026:153:07:08:15] 1d 13:18 2:43 AM Tue 02-Jun
2026:153:07:12:45ER Obsid: 41448 (3 ksec) Purpose: Perigee Attitude 1d 13:47 3:12 AM Tue 02-Jun
2026:153:10:30:29Load JUN0126A:CL153:1001 [2026:154:21:20:02] 1d 17:05 6:30 AM Tue 02-Jun
2026:153:10:30:29Load JUN0126A:CL153:1001 [2026:154:21:20:02] 1d 17:05 6:30 AM Tue 02-Jun
2026:153:10:33:29Maneuver to 302.68904 -6.94762 112.616 [2026:153:10:55:30] 1d 17:08 6:33 AM Tue 02-Jun
2026:153:11:00:00ER Obsid: 41447 (3 ksec) Purpose: Perigee Attitude 1d 17:35 7:00 AM Tue 02-Jun
2026:153:12:28:16Maneuver to 277.18564 24.21124 148.300 [2026:153:12:50:30] 1d 19:03 8:28 AM Tue 02-Jun
2026:153:12:55:00ER Obsid: 41446 (3 ksec) Purpose: Perigee Attitude 1d 19:30 8:55 AM Tue 02-Jun
2026:153:13:45:00Maneuver to 26.76624 57.68802 60.031 [2026:153:14:13:39] 1d 20:20 9:45 AM Tue 02-Jun
2026:153:14:18:09ER Obsid: 41445 (3 ksec) Purpose: Perigee Attitude 1d 20:5310:18 AM Tue 02-Jun
2026:153:14:40:00Comm pass on DSS-56 (duration 1:00) 1d 21:1510:40 AM Tue 02-Jun
2026:153:17:25:47Maneuver to 306.75296 -2.29679 114.814 [2026:153:17:56:04] 2d 00:00 1:25 PM Tue 02-Jun
2026:153:17:26:21Grating: NONE 2d 00:01 1:26 PM Tue 02-Jun
2026:153:17:42:42RADMON Enable 2d 00:17 1:42 PM Tue 02-Jun
2026:153:18:00:34Obsid: 29982 SI: ACIS-S (27 ksec) Target: IIZW083 2d 00:35 2:00 PM Tue 02-Jun
2026:153:20:50:00Comm pass on DSS-65 (duration 1:00) 2d 03:25 4:50 PM Tue 02-Jun
2026:154:01:30:34Maneuver to 171.86034 19.85587 245.366 [2026:154:02:14:12] 2d 08:05 9:30 PM Tue 02-Jun
2026:154:02:18:42Obsid: 29885 SI: ACIS-S (40 ksec) Target: SDSS J112728.73 2d 08:5310:18 PM Tue 02-Jun
2026:154:03:00:00Comm pass on DSS-65 (duration 1:00) 2d 09:3511:00 PM Tue 02-Jun
2026:154:12:50:00Comm pass on DSS-26 (duration 1:00) 2d 19:25 8:50 AM Wed 03-Jun
2026:154:13:25:22Maneuver to 135.91172 -67.94801 238.713 [2026:154:13:56:55] 2d 20:00 9:25 AM Wed 03-Jun
2026:154:14:01:25Obsid: 31146 SI: ACIS-S (15 ksec) Target: SN2026hkg 2d 20:3610:01 AM Wed 03-Jun

CXO and GOES rates
CXOGOESLimit
HRC shield017250
HRC MCP535430
P4GM---0.03300
P41GM---0.018.47
CXO: from snapshot at 2026:151:10:56:16 (- 6:28)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:20   P4GM: - 0:22   P41GM: - 0:20
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux31.65000012000> 30
2hr avg flux30.45000012000> 30
Orbital fluence1.2x106---2.0x109---
ACE data from 2026:151:17:10:00 (- 0:15)
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 29/2100Z to 30/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 576 km/s at 30/2021Z. Total IMF reached 11 nT at 30/1338Z. The maximum southward component of Bz reached -10 nT at 30/1744Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 408 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on days one and two (31 May, 01 Jun) and quiet levels on day three (02 Jun).
Solar ActivityAnalysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 9 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 (31 May, 01 Jun, 02 Jun).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor