Page content updated: 2026:111:19:34:00 ( 3:34 PM Tue 21-Apr )

Key Snapshot and SOH Values (Δt = - 8:19)
Obsid31864
Format2_NORM
RadMonENAB
CPE StatusNORM
RA88.043
Dec-7.433
Roll252.411
Pitch61.77
Sim Z75624
Sim Focus-467
HETG angle5.59
LETG angle75.71
SCS 107INAC
SCS 128ACT
SCS 129ACT
SCS 130ACT
RadMonENAB
SCS 131ACT
SCS 132ACT
SCS 133ACT
Snapshot from 2026:111:11:14:46 (Δt = - 8:19)

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)
2026:111:07:51:48Maneuver to 88.04566 -7.42950 252.412 [2026:111:08:27:30]-11:42 3:51 AM Tue 21-Apr
2026:111:08:18:28RADMON Enable-11:15 4:18 AM Tue 21-Apr
2026:111:08:32:00Obsid: 31864 SI: ACIS-S (14 ksec) Target: NGC 2110 -11:02 4:32 AM Tue 21-Apr
2026:111:09:50:00Comm pass on DSS-26 (duration 1:30)- 9:44 5:50 AM Tue 21-Apr
2026:111:12:25:20Maneuver to 196.04494 -5.54922 258.999 [2026:111:13:00:12]- 7:08 8:25 AM Tue 21-Apr
2026:111:12:28:54Grating: NONE- 7:05 8:28 AM Tue 21-Apr
2026:111:13:04:42Obsid: 30180 SI: ACIS-S (12 ksec) Target: NGC4941 - 6:29 9:04 AM Tue 21-Apr
2026:111:16:21:42Load APR2026A:CL111:1601 [2026:113:03:00:01]- 3:1212:21 PM Tue 21-Apr
2026:111:16:21:42Load APR2026A:CL111:1601 [2026:113:03:00:01]- 3:1212:21 PM Tue 21-Apr
2026:111:16:24:42Maneuver to 90.96268 -35.95111 240.987 [2026:111:16:58:33]- 3:0912:24 PM Tue 21-Apr
2026:111:17:03:03Obsid: 30026 SI: ACIS-I (20 ksec) Target: DESI J090.9854- - 2:30 1:03 PM Tue 21-Apr
2026:111:19:34:00--------------- NOW --------------- 0:00 3:34 PM Tue 21-Apr
2026:111:22:36:23Maneuver to 262.30948 -62.48889 54.988 [2026:111:23:05:29] 3:02 6:36 PM Tue 21-Apr
2026:111:23:09:59Obsid: 29863 SI: ACIS-S (46 ksec) Target: AM1724-622 3:35 7:09 PM Tue 21-Apr
2026:112:03:50:00Comm pass on DSS-54 (duration 1:00) 8:1611:50 PM Tue 21-Apr
2026:112:10:00:00Comm pass on DSS-65 (duration 1:00) 14:26 6:00 AM Wed 22-Apr
2026:112:12:06:39Maneuver to 139.88063 48.27073 247.040 [2026:112:12:54:10] 16:32 8:06 AM Wed 22-Apr
2026:112:12:58:40Obsid: 32311 SI: ACIS-S (23 ksec) Target: SDSS J091934.51 17:24 8:58 AM Wed 22-Apr
2026:112:19:22:00Maneuver to 213.85255 4.94247 168.036 [2026:112:19:51:37] 23:48 3:22 PM Wed 22-Apr
2026:112:19:56:07Obsid: 32309 SI: ACIS-S (15 ksec) Target: SDSS J141525.26 1d 00:22 3:56 PM Wed 22-Apr
2026:112:21:50:00Comm pass on DSS-54 (duration 1:00) 1d 02:16 5:50 PM Wed 22-Apr
2026:113:00:06:07Maneuver to 326.17963 38.30464 83.756 [2026:113:00:40:42] 1d 04:32 8:06 PM Wed 22-Apr
2026:113:00:09:42Grating: HETG 1d 04:35 8:09 PM Wed 22-Apr
2026:113:00:48:32Obsid: 31516 SI: HRC-I (13 ksec) Target: Cyg X-2 1d 05:14 8:48 PM Wed 22-Apr
2026:113:03:00:00Comm pass on DSS-65 (duration 1:00) 1d 07:2611:00 PM Wed 22-Apr
2026:113:04:30:01Load APR2026A:CL113:0401 [2026:114:15:24:40] 1d 08:5612:30 AM Thu 23-Apr
2026:113:04:30:01Load APR2026A:CL113:0401 [2026:114:15:24:40] 1d 08:5612:30 AM Thu 23-Apr
2026:113:04:38:32Maneuver to 213.85396 4.94281 169.281 [2026:113:05:13:10] 1d 09:0412:38 AM Thu 23-Apr
2026:113:04:39:21Grating: NONE 1d 09:0512:39 AM Thu 23-Apr
2026:113:05:17:40Obsid: 32310 SI: ACIS-S (10 ksec) Target: SDSS J141525.26 1d 09:43 1:17 AM Thu 23-Apr
2026:113:08:04:20Maneuver to 166.14366 38.24920 228.767 [2026:113:08:30:11] 1d 12:30 4:04 AM Thu 23-Apr
2026:113:08:07:55Grating: LETG 1d 12:33 4:07 AM Thu 23-Apr
2026:113:08:34:41Obsid: 31399 SI: ACIS-S (10 ksec) Target: MKN421 1d 13:00 4:34 AM Thu 23-Apr
2026:113:10:00:00Comm pass on DSS-26 (duration 1:00) 1d 14:26 6:00 AM Thu 23-Apr
2026:113:11:26:56Maneuver to 206.11780 -12.72100 272.303 [2026:113:11:55:58] 1d 15:52 7:26 AM Thu 23-Apr
2026:113:11:30:31Grating: NONE 1d 15:56 7:30 AM Thu 23-Apr
2026:113:11:32:29RADMON Disable 1d 15:58 7:32 AM Thu 23-Apr
2026:113:11:34:51Grating: HETG 1d 16:00 7:34 AM Thu 23-Apr
2026:113:12:00:28ER Obsid: 41536 (3 ksec) Purpose: Perigee Attitude 1d 16:26 8:00 AM Thu 23-Apr
2026:113:12:50:28Maneuver to 205.50000 -13.40000 279.067 [2026:113:12:59:24] 1d 17:16 8:50 AM Thu 23-Apr
2026:113:13:03:54ER Obsid: 41535 (3 ksec) Purpose: Perigee Attitude 1d 17:29 9:03 AM Thu 23-Apr
2026:113:17:23:10Maneuver to 102.00000 -33.00000 248.901 [2026:113:17:55:30] 1d 21:49 1:23 PM Thu 23-Apr
2026:113:17:40:00Comm pass on DSS-36 (duration 1:00) 1d 22:06 1:40 PM Thu 23-Apr
2026:113:18:00:00ER Obsid: 41534 (3 ksec) Purpose: Perigee Attitude 1d 22:26 2:00 PM Thu 23-Apr
2026:113:21:22:35Maneuver to 207.00000 -15.00000 299.902 [2026:113:21:54:30] 2d 01:48 5:22 PM Thu 23-Apr
2026:113:21:59:00ER Obsid: 41533 (0 ksec) Purpose: Perigee Attitude 2d 02:25 5:59 PM Thu 23-Apr
2026:113:23:02:08Maneuver to 90.96301 -35.95118 239.987 [2026:113:23:35:39] 2d 03:28 7:02 PM Thu 23-Apr
2026:113:23:02:42Grating: NONE 2d 03:28 7:02 PM Thu 23-Apr
2026:113:23:15:51RADMON Enable 2d 03:41 7:15 PM Thu 23-Apr
2026:113:23:40:09Obsid: 32312 SI: ACIS-I (19 ksec) Target: DESI J090.9854- 2d 04:06 7:40 PM Thu 23-Apr
2026:114:03:00:00Comm pass on DSS-65 (duration 1:00) 2d 07:2611:00 PM Thu 23-Apr
2026:114:04:56:49Maneuver to 202.10174 -31.59376 333.407 [2026:114:05:27:19] 2d 09:2212:56 AM Fri 24-Apr
2026:114:05:31:49Obsid: 30024 SI: ACIS-I (13 ksec) Target: Abell 3558 SE 2d 09:57 1:31 AM Fri 24-Apr
2026:114:09:08:29Maneuver to 90.96374 -35.95071 237.987 [2026:114:09:39:02] 2d 13:34 5:08 AM Fri 24-Apr
2026:114:09:43:32Obsid: 32313 SI: ACIS-I (18 ksec) Target: DESI J090.9854- 2d 14:09 5:43 AM Fri 24-Apr
2026:114:10:50:00Comm pass on DSS-26 (duration 1:00) 2d 15:16 6:50 AM Fri 24-Apr
2026:114:14:43:32Maneuver to 166.14345 38.25084 229.508 [2026:114:15:17:08] 2d 19:0910:43 AM Fri 24-Apr
2026:114:14:47:06Grating: LETG 2d 19:1310:47 AM Fri 24-Apr
2026:114:15:21:38Obsid: 31734 SI: ACIS-S (39 ksec) Target: MKN421 2d 19:4711:21 AM Fri 24-Apr

CXO and GOES rates
CXOGOESLimit
HRC shield017250
HRC MCP637430
P4GM---0.03300
P41GM---0.018.47
CXO: from snapshot at 2026:111:11:14:46 (- 8:19)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:19   P4GM: - 0:21   P41GM: - 0:19
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux9.995000012000> 30
2hr avg flux11.25000012000> 30
Orbital fluence3.6x105---2.0x109---
ACE data from 2026:111:19:20:00 (- 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 19/2100Z to 20/2100Z: The geomagnetic field has been at quiet to minor storm levels for the past 24 hours. Solar wind speed reached a peak of 582 km/s at 20/1427Z. Total IMF reached 11 nT at 20/1354Z. The maximum southward component of Bz reached -8 nT at 20/1639Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1296 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (21 Apr), quiet to unsettled levels on day two (22 Apr) and quiet levels on day three (23 Apr).
Solar ActivityAnalysis of Solar Active Regions and Activity from 19/2100Z to 20/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 2 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low with a chance for a C-class flares on days one, two, and three (21 Apr, 22 Apr, 23 Apr).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor