Page content updated: 2026:140:19:26:01 ( 3:26 PM Wed 20-May )

Key Snapshot and SOH Values (Δt = - 6:46)
Obsid30086
Format2_NORM
RadMonENAB
CPE StatusNORM
RA312.435
Dec59.898
Roll112.845
Pitch81.50
Sim Z73175
Sim Focus-467
HETG angle5.59
LETG angle76.09
SCS 107INAC
SCS 128ACT
SCS 129INAC
SCS 130ACT
RadMonENAB
SCS 131ACT
SCS 132INAC
SCS 133ACT
Snapshot from 2026:140:12:39:55 (Δt = - 6:46)

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)
2026:140:07:54:55Maneuver to 232.69300 -20.10300 271.981 [2026:140:08:25:30]-11:31 3:54 AM Wed 20-May
2026:140:08:30:00ER Obsid: 41473 (3 ksec) Purpose: Perigee Attitude -10:56 4:30 AM Wed 20-May
2026:140:09:20:00Maneuver to 239.00000 -15.90000 153.041 [2026:140:09:57:53]-10:06 5:20 AM Wed 20-May
2026:140:10:02:23ER Obsid: 41472 (0 ksec) Purpose: Perigee Attitude - 9:23 6:02 AM Wed 20-May
2026:140:11:45:00Comm pass on DSS-26 (duration 1:00)- 7:41 7:45 AM Wed 20-May
2026:140:12:09:57Load MAY1826A:CL140:1201 [2026:141:21:20:02]- 7:16 8:09 AM Wed 20-May
2026:140:12:09:57Load MAY1826A:CL140:1201 [2026:141:21:20:02]- 7:16 8:09 AM Wed 20-May
2026:140:12:12:57Maneuver to 4.82629 59.11176 66.646 [2026:140:12:50:59]- 7:13 8:12 AM Wed 20-May
2026:140:12:30:28RADMON Enable- 6:55 8:30 AM Wed 20-May
2026:140:12:55:29Obsid: 30086 SI: ACIS-S (21 ksec) Target: TV Cassiopeia - 6:30 8:55 AM Wed 20-May
2026:140:18:45:29Maneuver to 278.40515 -10.58575 105.003 [2026:140:19:18:13]- 0:40 2:45 PM Wed 20-May
2026:140:18:49:03Grating: NONE- 0:36 2:49 PM Wed 20-May
2026:140:19:26:01--------------- NOW --------------- 0:00 3:26 PM Wed 20-May
2026:140:19:27:54Obsid: 31395 SI: HRC-I (10 ksec) Target: SNR G21.5-0.9 0:01 3:27 PM Wed 20-May
2026:140:22:14:34Maneuver to 16.08815 -72.01828 151.074 [2026:140:22:45:16] 2:48 6:14 PM Wed 20-May
2026:140:22:49:46Obsid: 31372 SI: ACIS-I (25 ksec) Target: E0102-72.3 3:23 6:49 PM Wed 20-May
2026:141:03:45:00Comm pass on DSS-56 (duration 0:50) 8:1811:45 PM Wed 20-May
2026:141:05:46:26Maneuver to 220.59011 -17.22864 268.997 [2026:141:06:24:22] 10:20 1:46 AM Thu 21-May
2026:141:06:28:52Obsid: 32354 SI: ACIS-S (14 ksec) Target: NGC5728 11:02 2:28 AM Thu 21-May
2026:141:10:00:00Comm pass on DSS-26 (duration 1:00) 14:33 6:00 AM Thu 21-May
2026:141:10:32:12Maneuver to 16.13175 -72.04182 151.116 [2026:141:11:10:07] 15:06 6:32 AM Thu 21-May
2026:141:11:14:37Obsid: 31373 SI: ACIS-S (15 ksec) Target: E0102-72.3 15:48 7:14 AM Thu 21-May
2026:141:15:24:37Maneuver to 15.81800 -71.95329 140.550 [2026:141:15:35:14] 19:5811:24 AM Thu 21-May
2026:141:15:39:52Obsid: 31377 SI: ACIS-I (35 ksec) Target: E0102-72.3 20:1311:39 AM Thu 21-May
2026:141:19:50:00Comm pass on DSS-65 (duration 1:00) 1d 00:23 3:50 PM Thu 21-May
2026:142:01:20:12Load MAY1826A:CL142:0101 [2026:143:12:15:02] 1d 05:54 9:20 PM Thu 21-May
2026:142:01:20:12Load MAY1826A:CL142:0101 [2026:143:12:15:02] 1d 05:54 9:20 PM Thu 21-May
2026:142:01:23:12Maneuver to 222.33910 -32.72271 306.849 [2026:142:01:53:01] 1d 05:57 9:23 PM Thu 21-May
2026:142:01:30:00Comm pass on DSS-65 (duration 1:00) 1d 06:03 9:30 PM Thu 21-May
2026:142:01:57:31Obsid: 32349 SI: ACIS-S (16 ksec) Target: MASTER J1449-32 1d 06:31 9:57 PM Thu 21-May
2026:142:06:32:31Maneuver to 207.06506 23.99736 217.511 [2026:142:07:06:15] 1d 11:06 2:32 AM Fri 22-May
2026:142:07:10:45Obsid: 30511 SI: ACIS-I (31 ksec) Target: BOSS1348 1d 11:44 3:10 AM Fri 22-May
2026:142:10:00:00Comm pass on DSS-24 (duration 1:00) 1d 14:33 6:00 AM Fri 22-May
2026:142:15:58:18Maneuver to 235.97500 -16.17000 214.765 [2026:142:16:20:13] 1d 20:3211:58 AM Fri 22-May
2026:142:16:01:52Grating: HETG 1d 20:3512:01 PM Fri 22-May
2026:142:16:04:18RADMON Disable 1d 20:3812:04 PM Fri 22-May
2026:142:16:24:43ER Obsid: 41471 (3 ksec) Purpose: Perigee Attitude 1d 20:5812:24 PM Fri 22-May
2026:142:17:14:43Maneuver to 236.45000 -26.15000 335.830 [2026:142:17:52:38] 1d 21:48 1:14 PM Fri 22-May
2026:142:17:15:00Comm pass on DSS-34 (duration 1:00) 1d 21:48 1:15 PM Fri 22-May
2026:142:17:57:08ER Obsid: 41470 (3 ksec) Purpose: Perigee Attitude 1d 22:31 1:57 PM Fri 22-May
2026:142:18:47:08Maneuver to 81.56000 -36.83800 204.006 [2026:142:19:23:11] 1d 23:21 2:47 PM Fri 22-May
2026:142:19:27:41ER Obsid: 41469 (3 ksec) Purpose: Perigee Attitude 2d 00:01 3:27 PM Fri 22-May
2026:142:22:59:13Maneuver to 236.38100 -25.22800 329.210 [2026:142:23:35:30] 2d 03:33 6:59 PM Fri 22-May
2026:142:23:40:00ER Obsid: 41468 (3 ksec) Purpose: Perigee Attitude 2d 04:13 7:40 PM Fri 22-May
2026:143:00:30:00Comm pass on DSS-65 (duration 1:00) 2d 05:03 8:30 PM Fri 22-May
2026:143:00:30:00Maneuver to 239.00000 -15.90000 185.374 [2026:143:01:13:11] 2d 05:03 8:30 PM Fri 22-May
2026:143:01:17:41ER Obsid: 41467 (0 ksec) Purpose: Perigee Attitude 2d 05:51 9:17 PM Fri 22-May
2026:143:02:30:08Maneuver to 4.82567 59.11212 66.002 [2026:143:03:08:48] 2d 07:0410:30 PM Fri 22-May
2026:143:02:48:17RADMON Enable 2d 07:2210:48 PM Fri 22-May
2026:143:03:13:18Obsid: 32351 SI: ACIS-S (10 ksec) Target: TV Cassiopeia 2d 07:4711:13 PM Fri 22-May
2026:143:05:59:58Maneuver to 324.38396 -4.36503 110.158 [2026:143:06:27:23] 2d 10:33 1:59 AM Sat 23-May
2026:143:06:03:33Grating: NONE 2d 10:37 2:03 AM Sat 23-May
2026:143:06:31:53Obsid: 31222 SI: ACIS-S (50 ksec) Target: TDE2023mfm 2d 11:05 2:31 AM Sat 23-May
2026:143:10:45:00Comm pass on DSS-26 (duration 1:00) 2d 15:18 6:45 AM Sat 23-May
2026:143:18:30:00Comm pass on DSS-54 (duration 1:00) 2d 23:03 2:30 PM Sat 23-May
2026:143:18:30:00Load MAY1826A:CL143:1801 [2026:144:21:52:00] 2d 23:03 2:30 PM Sat 23-May
2026:143:18:30:00Load MAY1826A:CL143:1801 [2026:144:21:52:00] 2d 23:03 2:30 PM Sat 23-May

CXO and GOES rates
CXOGOESLimit
HRC shield017250
HRC MCP637430
P4GM---0.05300
P41GM---0.018.47
CXO: from snapshot at 2026:140:12:39:55 (- 6:46)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:16   P4GM: - 0:18   P41GM: - 0:16
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux10.95000012000> 30
2hr avg flux10.55000012000> 30
Orbital fluence50000---2.0x109---
ACE data from 2026:140:19:15:00 (- 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 18/2100Z to 19/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 655 km/s at 19/0854Z. Total IMF reached 7 nT at 19/1038Z. The maximum southward component of Bz reached -7 nT at 19/0733Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 3917 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one and three (20 May, 22 May) and quiet to unsettled levels on day two (21 May).
Solar ActivityAnalysis of Solar Active Regions and Activity from 18/2100Z to 19/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low with a slight chance for an M-class flare on days one and two (20 May, 21 May) and expected to be low with a chance for M-class flares on day three (22 May).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor