Page content updated: 2026:138:16:06:00 ( 12:06 PM Mon 18-May )

Key Snapshot and SOH Values (Δt = - 4:55)
Obsid32352
Format2_NORM
RadMonENAB
CPE StatusNORM
RA220.596
Dec-17.220
Roll258.376
Pitch166.08
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 2026:138:11:10:58 (Δt = - 4:55)

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)
2026:138:04:40:03Maneuver to 135.15002 20.92361 254.658 [2026:138:05:11:33]-11:2512:40 AM Mon 18-May
2026:138:05:16:03Obsid: 32355 SI: ACIS-S (15 ksec) Target: ZwCl 0857.9+210 -10:49 1:16 AM Mon 18-May
2026:138:09:26:03Maneuver to 220.59425 -17.22440 258.375 [2026:138:09:57:32]- 6:39 5:26 AM Mon 18-May
2026:138:10:02:02Obsid: 32352 SI: ACIS-S (12 ksec) Target: NGC5728 - 6:03 6:02 AM Mon 18-May
2026:138:10:15:00Comm pass on DSS-24 (duration 1:00)- 5:51 6:15 AM Mon 18-May
2026:138:13:22:02Maneuver to 135.14995 20.92388 254.693 [2026:138:13:53:32]- 2:43 9:22 AM Mon 18-May
2026:138:13:58:02Obsid: 31883 SI: ACIS-S (10 ksec) Target: ZwCl 0857.9+210 - 2:07 9:58 AM Mon 18-May
2026:138:16:06:00--------------- NOW --------------- 0:0012:06 PM Mon 18-May
2026:138:16:44:42Maneuver to 220.59420 -17.22396 258.257 [2026:138:17:16:11] 0:3812:44 PM Mon 18-May
2026:138:17:20:41Obsid: 32353 SI: ACIS-S (12 ksec) Target: NGC5728 1:14 1:20 PM Mon 18-May
2026:138:20:40:41Maneuver to 150.28602 2.19426 250.208 [2026:138:21:07:41] 4:34 4:40 PM Mon 18-May
2026:138:21:12:11Obsid: 30247 SI: ACIS-I (29 ksec) Target: Center of COSMO 5:06 5:12 PM Mon 18-May
2026:138:21:15:00Comm pass on DSS-54 (duration 1:00) 5:09 5:15 PM Mon 18-May
2026:138:23:03:42Load MAY1826A:CL138:2301 [2026:140:11:45:01] 6:57 7:03 PM Mon 18-May
2026:138:23:03:42Load MAY1826A:CL138:2301 [2026:140:11:45:01] 6:57 7:03 PM Mon 18-May
2026:139:01:20:00Comm pass on DSS-65 (duration 1:00) 9:14 9:20 PM Mon 18-May
2026:139:05:25:15Maneuver to 220.59473 -17.22559 258.031 [2026:139:05:52:15] 13:19 1:25 AM Tue 19-May
2026:139:05:56:45Obsid: 30206 SI: ACIS-S (14 ksec) Target: NGC5728 13:50 1:56 AM Tue 19-May
2026:139:09:50:05Maneuver to 239.15298 41.89056 176.492 [2026:139:10:22:17] 17:44 5:50 AM Tue 19-May
2026:139:09:55:00Comm pass on DSS-26 (duration 1:00) 17:49 5:55 AM Tue 19-May
2026:139:10:26:47Obsid: 29879 SI: ACIS-S (48 ksec) Target: SDSS J155636.40 18:20 6:26 AM Tue 19-May
2026:139:18:00:00Comm pass on DSS-34 (duration 1:00) 1d 01:54 2:00 PM Tue 19-May
2026:139:23:47:14Maneuver to 239.00000 -15.90000 148.758 [2026:140:00:12:22] 1d 07:41 7:47 PM Tue 19-May
2026:139:23:50:48Grating: HETG 1d 07:44 7:50 PM Tue 19-May
2026:139:23:52:51RADMON Disable 1d 07:46 7:52 PM Tue 19-May
2026:140:00:16:52ER Obsid: 41476 (3 ksec) Purpose: Perigee Attitude 1d 08:10 8:16 PM Tue 19-May
2026:140:00:50:00Comm pass on DSS-54 (duration 1:00) 1d 08:44 8:50 PM Tue 19-May
2026:140:01:06:52Maneuver to 232.69300 -20.10300 273.118 [2026:140:01:45:57] 1d 09:00 9:06 PM Tue 19-May
2026:140:01:50:27ER Obsid: 41475 (3 ksec) Purpose: Perigee Attitude 1d 09:44 9:50 PM Tue 19-May
2026:140:02:40:27Maneuver to 148.10000 7.60000 250.091 [2026:140:03:11:03] 1d 10:3410:40 PM Tue 19-May
2026:140:03:15:33ER Obsid: 41474 (3 ksec) Purpose: Perigee Attitude 1d 11:0911:15 PM Tue 19-May
2026:140:07:54:55Maneuver to 232.69300 -20.10300 271.981 [2026:140:08:25:30] 1d 15:48 3:54 AM Wed 20-May
2026:140:08:30:00ER Obsid: 41473 (3 ksec) Purpose: Perigee Attitude 1d 16:24 4:30 AM Wed 20-May
2026:140:09:20:00Maneuver to 239.00000 -15.90000 153.041 [2026:140:09:57:53] 1d 17:14 5:20 AM Wed 20-May
2026:140:10:02:23ER Obsid: 41472 (0 ksec) Purpose: Perigee Attitude 1d 17:56 6:02 AM Wed 20-May
2026:140:11:45:00Comm pass on DSS-26 (duration 1:00) 1d 19:39 7:45 AM Wed 20-May
2026:140:12:09:57Load MAY1826A:CL140:1201 [2026:141:21:20:02] 1d 20:03 8:09 AM Wed 20-May
2026:140:12:09:57Load MAY1826A:CL140:1201 [2026:141:21:20:02] 1d 20:03 8:09 AM Wed 20-May
2026:140:12:12:57Maneuver to 4.82629 59.11176 66.646 [2026:140:12:50:59] 1d 20:06 8:12 AM Wed 20-May
2026:140:12:30:28RADMON Enable 1d 20:24 8:30 AM Wed 20-May
2026:140:12:55:29Obsid: 30086 SI: ACIS-S (21 ksec) Target: TV Cassiopeia 1d 20:49 8:55 AM Wed 20-May
2026:140:18:45:29Maneuver to 278.40515 -10.58575 105.003 [2026:140:19:18:13] 2d 02:39 2:45 PM Wed 20-May
2026:140:18:49:03Grating: NONE 2d 02:43 2:49 PM Wed 20-May
2026:140:19:27:54Obsid: 31395 SI: HRC-I (10 ksec) Target: SNR G21.5-0.9 2d 03:21 3:27 PM Wed 20-May
2026:140:22:14:34Maneuver to 16.08815 -72.01828 151.074 [2026:140:22:45:16] 2d 06:08 6:14 PM Wed 20-May
2026:140:22:49:46Obsid: 31372 SI: ACIS-I (25 ksec) Target: E0102-72.3 2d 06:43 6:49 PM Wed 20-May
2026:141:03:45:00Comm pass on DSS-56 (duration 0:50) 2d 11:3911:45 PM Wed 20-May
2026:141:05:46:26Maneuver to 220.59011 -17.22864 268.997 [2026:141:06:24:22] 2d 13:40 1:46 AM Thu 21-May
2026:141:06:28:52Obsid: 32354 SI: ACIS-S (14 ksec) Target: NGC5728 2d 14:22 2:28 AM Thu 21-May
2026:141:10:00:00Comm pass on DSS-26 (duration 1:00) 2d 17:54 6:00 AM Thu 21-May
2026:141:10:32:12Maneuver to 16.13175 -72.04182 151.116 [2026:141:11:10:07] 2d 18:26 6:32 AM Thu 21-May
2026:141:11:14:37Obsid: 31373 SI: ACIS-S (15 ksec) Target: E0102-72.3 2d 19:08 7:14 AM Thu 21-May
2026:141:15:24:37Maneuver to 15.81800 -71.95329 140.550 [2026:141:15:35:14] 2d 23:1811:24 AM Thu 21-May
2026:141:15:39:52Obsid: 31377 SI: ACIS-I (35 ksec) Target: E0102-72.3 2d 23:3311:39 AM Thu 21-May

CXO and GOES rates
CXOGOESLimit
HRC shield016250
HRC MCP535430
P4GM---0.03300
P41GM---0.008.47
CXO: from snapshot at 2026:138:11:10:58 (- 4:55)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:16   P4GM: - 0:16   P41GM: - 0:18
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux21.55000012000> 30
2hr avg flux23.95000012000> 30
Orbital fluence5.5x106---2.0x109---
ACE data from 2026:138:15:55:00 (- 0:11)
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 16/2100Z to 17/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 734 km/s at 16/2108Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 6117 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to minor storm levels on days one and two (18 May, 19 May) and quiet levels on day three (20 May).
Solar ActivityAnalysis of Solar Active Regions and Activity from 16/2100Z to 17/2100Z: Solar activity has been at moderate levels for the past 24 hours. There are currently 7 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 (18 May, 19 May, 20 May).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor