Page content updated: 2026:150:13:44:00 ( 9:44 AM Sat 30-May )

Key Snapshot and SOH Values (Δt = - 2:48)
Obsid30952
Format2_NORM
RadMonENAB
CPE StatusNORM
RA280.573
Dec-4.296
Roll109.857
Pitch141.86
Sim Z75624
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 2026:150:10:55:15 (Δt = - 2:48)

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)
2026:150:01:44:11Obsid: 31523 SI: ACIS-S (32 ksec) Target: V444 Cyg -11:59 9:44 PM Fri 29-May
2026:150:02:45:00Comm pass on DSS-65 (duration 0:50)-10:5910:45 PM Fri 29-May
2026:150:10:00:00Comm pass on DSS-24 (duration 1:00)- 3:44 6:00 AM Sat 30-May
2026:150:10:37:31Maneuver to 262.67956 -21.46997 93.925 [2026:150:11:06:35]- 3:06 6:37 AM Sat 30-May
2026:150:10:41:05Grating: NONE- 3:02 6:41 AM Sat 30-May
2026:150:11:11:05Obsid: 30952 SI: ACIS-S (9 ksec) Target: Kepler's SNR - 2:32 7:11 AM Sat 30-May
2026:150:13:44:00--------------- NOW --------------- 0:00 9:44 AM Sat 30-May
2026:150:13:57:16Maneuver to 16.50000 13.80000 107.002 [2026:150:14:34:15] 0:13 9:57 AM Sat 30-May
2026:150:14:00:50Grating: HETG 0:1610:00 AM Sat 30-May
2026:150:14:02:53RADMON Disable 0:1810:02 AM Sat 30-May
2026:150:14:38:45ER Obsid: 41454 (3 ksec) Purpose: Perigee Attitude 0:5410:38 AM Sat 30-May
2026:150:15:56:24Maneuver to 252.50000 -21.07000 99.193 [2026:150:16:35:30] 2:1211:56 AM Sat 30-May
2026:150:16:15:00Comm pass on DSS-36 (duration 1:00) 2:3112:15 PM Sat 30-May
2026:150:16:40:00ER Obsid: 41453 (2 ksec) Purpose: Perigee Attitude 2:5612:40 PM Sat 30-May
2026:150:17:41:35Maneuver to 325.90000 14.00000 113.966 [2026:150:18:10:30] 3:57 1:41 PM Sat 30-May
2026:150:18:15:00ER Obsid: 41452 (2 ksec) Purpose: Perigee Attitude 4:31 2:15 PM Sat 30-May
2026:150:19:09:09Maneuver to 145.00000 9.00000 249.678 [2026:150:19:55:30] 5:25 3:09 PM Sat 30-May
2026:150:20:00:00ER Obsid: 41451 (3 ksec) Purpose: Perigee Attitude 6:16 4:00 PM Sat 30-May
2026:150:22:37:29Maneuver to 241.00000 -20.00000 252.162 [2026:150:23:10:30] 8:53 6:37 PM Sat 30-May
2026:150:23:15:00ER Obsid: 41450 (3 ksec) Purpose: Perigee Attitude 9:31 7:15 PM Sat 30-May
2026:151:01:00:00Comm pass on DSS-24 (duration 1:00) 11:16 9:00 PM Sat 30-May
2026:151:01:00:00Load MAY2526A:CL151:0103 [2026:151:22:30:10] 11:16 9:00 PM Sat 30-May
2026:151:01:00:00Load MAY2526A:CL151:0103 [2026:151:22:30:10] 11:16 9:00 PM Sat 30-May
2026:151:01:22:47Maneuver to 149.86327 30.77116 242.998 [2026:151:01:56:36] 11:38 9:22 PM Sat 30-May
2026:151:01:23:22Grating: NONE 11:39 9:23 PM Sat 30-May
2026:151:01:43:14RADMON Enable 11:59 9:43 PM Sat 30-May
2026:151:02:01:06Obsid: 32359 SI: ACIS-S (19 ksec) Target: Leo A 12:1710:01 PM Sat 30-May
2026:151:07:17:46Maneuver to 258.24587 64.06149 170.331 [2026:151:07:44:55] 17:33 3:17 AM Sun 31-May
2026:151:07:49:25Obsid: 32366 SI: ACIS-I (20 ksec) Target: Abell 2255 18:05 3:49 AM Sun 31-May
2026:151:10:00:00Comm pass on DSS-26 (duration 1:00) 20:16 6:00 AM Sun 31-May
2026:151:13:22:45Maneuver to 304.91011 38.71980 128.075 [2026:151:13:42:01] 23:38 9:22 AM Sun 31-May
2026:151:13:26:19Grating: HETG 23:42 9:26 AM Sun 31-May
2026:151:13:53:30Obsid: 31522 SI: ACIS-S (31 ksec) Target: V444 Cyg 1d 00:09 9:53 AM Sun 31-May
2026:151:17:45:00Comm pass on DSS-56 (duration 1:00) 1d 04:01 1:45 PM Sun 31-May
2026:151:22:27:10Load JUN0126A:CL151:2201 [2026:153:07:08:30] 1d 08:43 6:27 PM Sun 31-May
2026:151:22:27:10Load JUN0126A:CL151:2201 [2026:153:07:08:30] 1d 08:43 6:27 PM Sun 31-May
2026:151:22:30:10Maneuver to 267.19104 -27.18807 78.002 [2026:151:23:01:13] 1d 08:46 6:30 PM Sun 31-May
2026:151:22:33:45Grating: NONE 1d 08:49 6:33 PM Sun 31-May
2026:151:23:05:43Obsid: 30126 SI: ACIS-S (10 ksec) Target: SNR G1.9+0.3 1d 09:21 7:05 PM Sun 31-May
2026:152:01:57:23Maneuver to 132.99447 -65.96333 227.019 [2026:152:02:33:40] 1d 12:13 9:57 PM Sun 31-May
2026:152:02:00:00Comm pass on DSS-24 (duration 1:00) 1d 12:1610:00 PM Sun 31-May
2026:152:02:38:10Obsid: 32368 SI: ACIS-S (20 ksec) Target: EP260302a 1d 12:5410:38 PM Sun 31-May
2026:152:08:11:30Maneuver to 267.18469 -27.18844 62.999 [2026:152:08:45:44] 1d 18:27 4:11 AM Mon 01-Jun
2026:152:08:50:14Obsid: 32242 SI: ACIS-S (11 ksec) Target: SNR G1.9+0.3 1d 19:06 4:50 AM Mon 01-Jun
2026:152:11:53:34Maneuver to 132.98494 -65.96164 237.755 [2026:152:12:26:30] 1d 22:09 7:53 AM Mon 01-Jun
2026:152:12:31:00Obsid: 32377 SI: ACIS-S (23 ksec) Target: EP260302a 1d 22:47 8:31 AM Mon 01-Jun
2026:152:13:10:00Comm pass on DSS-36 (duration 1:00) 1d 23:26 9:10 AM Mon 01-Jun
2026:152:19:02:40Maneuver to 65.35635 -31.63055 170.013 [2026:152:19:25:35] 2d 05:18 3:02 PM Mon 01-Jun
2026:152:19:30:05Obsid: 31449 SI: ACIS-S (5 ksec) Target: 6dFJ0421194-313 2d 05:46 3:30 PM Mon 01-Jun
2026:152:20:00:00Comm pass on DSS-65 (duration 1:00) 2d 06:16 4:00 PM Mon 01-Jun
2026:152:21:01:45Maneuver to 247.96554 -47.37541 356.705 [2026:152:21:35:12] 2d 07:17 5:01 PM Mon 01-Jun
2026:152:21:39:42Obsid: 30535 SI: ACIS-S (28 ksec) Target: PWN J1631-4721 2d 07:55 5:39 PM Mon 01-Jun
2026:153:03:00:00Comm pass on DSS-56 (duration 1:00) 2d 13:1611:00 PM Mon 01-Jun
2026:153:05:29:06Maneuver to 251.63727 -24.63965 33.744 [2026:153:05:49:20] 2d 15:45 1:29 AM Tue 02-Jun
2026:153:05:32:40Grating: HETG 2d 15:48 1:32 AM Tue 02-Jun
2026:153:05:34:43RADMON Disable 2d 15:50 1:34 AM Tue 02-Jun
2026:153:05:53:50ER Obsid: 41449 (3 ksec) Purpose: Perigee Attitude 2d 16:09 1:53 AM Tue 02-Jun
2026:153:06:43:50Maneuver to 253.84994 -21.87093 94.948 [2026:153:07:08:15] 2d 16:59 2:43 AM Tue 02-Jun
2026:153:07:12:45ER Obsid: 41448 (3 ksec) Purpose: Perigee Attitude 2d 17:28 3:12 AM Tue 02-Jun
2026:153:10:30:29Load JUN0126A:CL153:1001 [2026:154:21:20:02] 2d 20:46 6:30 AM Tue 02-Jun
2026:153:10:30:29Load JUN0126A:CL153:1001 [2026:154:21:20:02] 2d 20:46 6:30 AM Tue 02-Jun
2026:153:10:33:29Maneuver to 302.68904 -6.94762 112.616 [2026:153:10:55:30] 2d 20:49 6:33 AM Tue 02-Jun
2026:153:11:00:00ER Obsid: 41447 (3 ksec) Purpose: Perigee Attitude 2d 21:16 7:00 AM Tue 02-Jun
2026:153:12:28:16Maneuver to 277.18564 24.21124 148.300 [2026:153:12:50:30] 2d 22:44 8:28 AM Tue 02-Jun
2026:153:12:55:00ER Obsid: 41446 (3 ksec) Purpose: Perigee Attitude 2d 23:11 8:55 AM Tue 02-Jun

CXO and GOES rates
CXOGOESLimit
HRC shield016250
HRC MCP637430
P4GM---0.03300
P41GM---0.018.47
CXO: from snapshot at 2026:150:10:55:15 (- 2:48)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:19   P4GM: - 0:19   P41GM: - 0:19
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux26.75000012000> 30
2hr avg flux25.95000012000> 30
Orbital fluence2.2x106---2.0x109---
ACE data from 2026:150:13:30:00 (- 0:14)
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 28/2100Z to 29/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 482 km/s at 28/2140Z. Total IMF reached 8 nT at 29/1712Z. The maximum southward component of Bz reached -8 nT at 29/1604Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 565 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on days one and two (30 May, 31 May) and quiet to unsettled levels on day three (01 Jun).
Solar ActivityAnalysis of Solar Active Regions and Activity from 28/2100Z to 29/2100Z: Solar activity has been at moderate 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 (30 May, 31 May, 01 Jun).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor