Page content updated: 2026:086:22:29:00 ( 6:29 PM Fri 27-Mar )

Key Snapshot and SOH Values (Δt = - 4:01)
Obsid31150
Format2_NORM
RadMonENAB
CPE StatusNORM
RA135.324
Dec18.629
Roll252.454
Pitch125.48
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 2026:086:18:27:32 (Δt = - 4:01)

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)
2026:086:10:45:00Comm pass on DSS-26 (duration 1:00)-11:44 6:45 AM Fri 27-Mar
2026:086:10:47:19Maneuver to 65.13142 70.56324 298.606 [2026:086:11:09:28]-11:41 6:47 AM Fri 27-Mar
2026:086:11:09:28ER Obsid: 41598 (0 ksec) Purpose: Intermediate Attitud -11:19 7:09 AM Fri 27-Mar
2026:086:11:14:28Maneuver to 258.24343 64.04190 107.099 [2026:086:11:35:32]-11:14 7:14 AM Fri 27-Mar
2026:086:11:40:02Obsid: 30025 SI: ACIS-I (21 ksec) Target: Abell 2255 -10:48 7:40 AM Fri 27-Mar
2026:086:17:30:00Comm pass on DSS-34 (duration 1:00)- 4:59 1:30 PM Fri 27-Mar
2026:086:17:30:02Maneuver to 135.32100 18.62536 252.455 [2026:086:18:01:49]- 4:58 1:30 PM Fri 27-Mar
2026:086:18:06:19Obsid: 31150 SI: ACIS-S (29 ksec) Target: AT2026dbl - 4:22 2:06 PM Fri 27-Mar
2026:086:22:29:00--------------- NOW --------------- 0:00 6:29 PM Fri 27-Mar
2026:087:02:26:12Maneuver to 39.00000 46.00000 316.853 [2026:087:02:55:11] 3:5710:26 PM Fri 27-Mar
2026:087:02:29:46Grating: HETG 4:0010:29 PM Fri 27-Mar
2026:087:02:30:00Comm pass on DSS-65 (duration 1:00) 4:0110:30 PM Fri 27-Mar
2026:087:02:31:49RADMON Disable 4:0210:31 PM Fri 27-Mar
2026:087:02:59:41ER Obsid: 41597 (3 ksec) Purpose: Perigee Attitude 4:3010:59 PM Fri 27-Mar
2026:087:03:49:41Maneuver to 181.25500 2.76900 223.571 [2026:087:04:27:38] 5:2011:49 PM Fri 27-Mar
2026:087:04:32:08ER Obsid: 41596 (0 ksec) Purpose: Perigee Attitude 6:0312:32 AM Sat 28-Mar
2026:087:04:47:49Maneuver to 189.92400 -5.60000 50.344 [2026:087:05:37:22] 6:1812:47 AM Sat 28-Mar
2026:087:05:41:52ER Obsid: 41595 (3 ksec) Purpose: Perigee Attitude 7:12 1:41 AM Sat 28-Mar
2026:087:06:31:52Maneuver to 326.28140 -32.54101 124.907 [2026:087:07:10:22] 8:02 2:31 AM Sat 28-Mar
2026:087:07:14:52ER Obsid: 41594 (3 ksec) Purpose: Perigee Attitude 8:45 3:14 AM Sat 28-Mar
2026:087:10:10:00Comm pass on DSS-36 (duration 1:00) 11:41 6:10 AM Sat 28-Mar
2026:087:10:21:00Maneuver to 326.28140 -32.54101 124.853 [2026:087:10:25:00] 11:52 6:21 AM Sat 28-Mar
2026:087:10:25:00ER Obsid: 41593 (0 ksec) Purpose: Perigee Attitude 11:56 6:25 AM Sat 28-Mar
2026:087:10:25:21Maneuver to 189.92400 -5.60000 49.578 [2026:087:11:03:50] 11:56 6:25 AM Sat 28-Mar
2026:087:11:08:20ER Obsid: 41592 (0 ksec) Purpose: Perigee Attitude 12:39 7:08 AM Sat 28-Mar
2026:087:11:24:01Maneuver to 181.25500 2.76900 224.396 [2026:087:12:13:55] 12:55 7:24 AM Sat 28-Mar
2026:087:12:18:25ER Obsid: 41591 (0 ksec) Purpose: Perigee Attitude 13:49 8:18 AM Sat 28-Mar
2026:087:12:52:26Maneuver to 49.92803 41.59834 296.215 [2026:087:13:29:36] 14:23 8:52 AM Sat 28-Mar
2026:087:12:53:00Grating: NONE 14:24 8:53 AM Sat 28-Mar
2026:087:13:11:48RADMON Enable 14:42 9:11 AM Sat 28-Mar
2026:087:13:34:06Obsid: 32249 SI: ACIS-I (15 ksec) Target: Perseus cluster 15:05 9:34 AM Sat 28-Mar
2026:087:17:59:06Maneuver to 180.14700 -1.75800 259.449 [2026:087:18:37:41] 19:30 1:59 PM Sat 28-Mar
2026:087:18:42:11ER Obsid: 41590 (0 ksec) Purpose: Intermediate Attitud 20:13 2:42 PM Sat 28-Mar
2026:087:18:57:52Maneuver to 189.90577 -5.36948 49.974 [2026:087:19:42:13] 20:28 2:57 PM Sat 28-Mar
2026:087:18:58:26Grating: HETG 20:29 2:58 PM Sat 28-Mar
2026:087:19:05:00Comm pass on DSS-56 (duration 1:00) 20:36 3:05 PM Sat 28-Mar
2026:087:19:46:43Obsid: 32244 SI: ACIS-S (9 ksec) Target: NGC 4593 21:17 3:46 PM Sat 28-Mar
2026:087:20:35:01Load MAR2426A:CL087:2002 [2026:088:21:40:04] 22:06 4:35 PM Sat 28-Mar
2026:087:20:35:01Load MAR2426A:CL087:2002 [2026:088:21:40:04] 22:06 4:35 PM Sat 28-Mar
2026:087:22:28:23Maneuver to 310.00000 -24.00000 107.752 [2026:087:23:04:55] 23:59 6:28 PM Sat 28-Mar
2026:087:23:09:25ER Obsid: 41589 (0 ksec) Purpose: Intermediate Attitud 1d 00:40 7:09 PM Sat 28-Mar
2026:087:23:25:06Maneuver to 49.92443 41.60010 297.018 [2026:088:00:12:00] 1d 00:56 7:25 PM Sat 28-Mar
2026:087:23:25:41Grating: NONE 1d 00:56 7:25 PM Sat 28-Mar
2026:087:23:35:00Comm pass on DSS-65 (duration 1:00) 1d 01:06 7:35 PM Sat 28-Mar
2026:088:00:16:30Obsid: 30328 SI: ACIS-I (16 ksec) Target: Perseus cluster 1d 01:47 8:16 PM Sat 28-Mar
2026:088:04:53:10Maneuver to 135.32025 18.63050 252.528 [2026:088:05:20:45] 1d 06:2412:53 AM Sun 29-Mar
2026:088:05:25:15Obsid: 31151 SI: ACIS-S (30 ksec) Target: AT2026dbl 1d 06:56 1:25 AM Sun 29-Mar
2026:088:10:10:00Comm pass on DSS-24 (duration 1:00) 1d 11:41 6:10 AM Sun 29-Mar
2026:088:13:45:15Maneuver to 274.90901 -25.70559 91.732 [2026:088:14:36:09] 1d 15:16 9:45 AM Sun 29-Mar
2026:088:14:40:39Obsid: 31343 SI: ACIS-I (10 ksec) Target: V4641 Sgr S2 1d 16:1110:40 AM Sun 29-Mar
2026:088:17:27:19Maneuver to 189.90332 -5.36783 43.819 [2026:088:17:57:14] 1d 18:58 1:27 PM Sun 29-Mar
2026:088:17:30:54Grating: HETG 1d 19:01 1:30 PM Sun 29-Mar
2026:088:18:01:44Obsid: 32245 SI: ACIS-S (13 ksec) Target: NGC 4593 1d 19:32 2:01 PM Sun 29-Mar
2026:088:20:45:00Comm pass on DSS-34 (duration 1:00) 1d 22:16 4:45 PM Sun 29-Mar
2026:088:21:37:04Load MAR3026A:CL088:2101 [2026:090:09:38:23] 1d 23:08 5:37 PM Sun 29-Mar
2026:088:21:37:04Load MAR3026A:CL088:2101 [2026:090:09:38:23] 1d 23:08 5:37 PM Sun 29-Mar
2026:088:21:40:04Maneuver to 282.69960 -31.82077 95.340 [2026:088:22:11:09] 1d 23:11 5:40 PM Sun 29-Mar
2026:088:21:43:38Grating: NONE 1d 23:14 5:43 PM Sun 29-Mar
2026:088:22:15:39Obsid: 32261 SI: ACIS-S (5 ksec) Target: CD-31 16041 1d 23:46 6:15 PM Sun 29-Mar
2026:088:23:38:59Maneuver to 177.69973 55.36381 180.964 [2026:089:00:18:34] 2d 01:09 7:38 PM Sun 29-Mar
2026:089:00:23:04Obsid: 31127 SI: ACIS-S (10 ksec) Target: SN 2026dix 2d 01:54 8:23 PM Sun 29-Mar
2026:089:01:00:00Comm pass on DSS-56 (duration 1:00) 2d 02:31 9:00 PM Sun 29-Mar
2026:089:03:09:44Maneuver to 205.66986 19.21963 141.485 [2026:089:03:31:09] 2d 04:4011:09 PM Sun 29-Mar
2026:089:03:35:39Obsid: 29933 SI: ACIS-S (6 ksec) Target: SDSS J134234.31 2d 05:0611:35 PM Sun 29-Mar
2026:089:05:15:46Maneuver to 252.09784 41.91205 110.982 [2026:089:05:36:55] 2d 06:46 1:15 AM Mon 30-Mar
2026:089:05:41:25Obsid: 29913 SI: ACIS-S (44 ksec) Target: SDSS J164818.07 2d 07:12 1:41 AM Mon 30-Mar
2026:089:11:10:00Comm pass on DSS-24 (duration 1:00) 2d 12:41 7:10 AM Mon 30-Mar
2026:089:18:00:36Maneuver to 191.50000 -1.40000 133.636 [2026:089:18:27:04] 2d 19:31 2:00 PM Mon 30-Mar
2026:089:18:04:11Grating: HETG 2d 19:35 2:04 PM Mon 30-Mar
2026:089:18:06:14RADMON Disable 2d 19:37 2:06 PM Mon 30-Mar
2026:089:18:31:34ER Obsid: 41588 (2 ksec) Purpose: Perigee Attitude 2d 20:02 2:31 PM Mon 30-Mar
2026:089:19:30:58Maneuver to 324.00000 26.00000 70.584 [2026:089:20:10:30] 2d 21:01 3:30 PM Mon 30-Mar
2026:089:19:45:00Comm pass on DSS-34 (duration 1:00) 2d 21:16 3:45 PM Mon 30-Mar
2026:089:20:15:00ER Obsid: 41587 (1 ksec) Purpose: Perigee Attitude 2d 21:46 4:15 PM Mon 30-Mar
2026:089:20:51:46Maneuver to 349.50000 -41.30000 153.579 [2026:089:21:25:30] 2d 22:22 4:51 PM Mon 30-Mar
2026:089:21:30:00ER Obsid: 41586 (1 ksec) Purpose: Perigee Attitude 2d 23:01 5:30 PM Mon 30-Mar
2026:089:22:15:50Maneuver to 190.50000 -6.20000 31.726 [2026:089:22:55:30] 2d 23:46 6:15 PM Mon 30-Mar

CXO and GOES rates
CXOGOESLimit
HRC shield016250
HRC MCP535430
P4GM---0.07300
P41GM---0.008.47
CXO: from snapshot at 2026:086:18:27:32 (- 4:01)
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 flux6415000012000> 30
2hr avg flux6275000012000> 30
Orbital fluence3.2x108---2.0x109---
ACE data from 2026:086:22:15:00 (- 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 26/2100Z to 27/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 522 km/s at 27/1504Z. Total IMF reached 5 nT at 27/0200Z. The maximum southward component of Bz reached -4 nT at 27/2058Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 12784 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (28 Mar), quiet to unsettled levels on day two (29 Mar) and quiet to active levels on day three (30 Mar).
Solar ActivityAnalysis of Solar Active Regions and Activity from 26/2100Z to 27/2100Z: 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 (28 Mar, 29 Mar, 30 Mar).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor