Page content updated: 2026:146:17:00:00 ( 1:00 PM Tue 26-May )

Key Snapshot and SOH Values (Δt = - 6:03)
Obsid31375
Format2_NORM
RadMonENAB
CPE StatusNORM
RA15.935
Dec-71.999
Roll136.440
Pitch98.16
Sim Z79431
Sim Focus-467
HETG angle77.59
LETG angle76.09
SCS 107INAC
SCS 128ACT
SCS 129ACT
SCS 130INAC
RadMonENAB
SCS 131ACT
SCS 132ACT
SCS 133INAC
Snapshot from 2026:146:10:56:07 (Δt = - 6:03)

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)
2026:146:05:28:01Maneuver to 267.19310 -27.19218 79.884 [2026:146:05:56:41]-11:31 1:28 AM Tue 26-May
2026:146:06:01:11Obsid: 32360 SI: ACIS-S (13 ksec) Target: SNR G1.9+0.3 -10:58 2:01 AM Tue 26-May
2026:146:09:34:51Load MAY2526A:CL146:0903 [2026:147:20:30:14]- 7:25 5:34 AM Tue 26-May
2026:146:09:34:51Load MAY2526A:CL146:0903 [2026:147:20:30:14]- 7:25 5:34 AM Tue 26-May
2026:146:09:37:51Maneuver to 15.94045 -71.99875 136.446 [2026:146:10:06:34]- 7:22 5:37 AM Tue 26-May
2026:146:10:00:00Comm pass on DSS-24 (duration 1:00)- 7:00 6:00 AM Tue 26-May
2026:146:10:11:04Obsid: 31375 SI: ACIS-S (19 ksec) Target: E0102-72.3 - 6:48 6:11 AM Tue 26-May
2026:146:15:40:43Maneuver to 202.11125 -31.57660 275.781 [2026:146:16:11:19]- 1:1911:40 AM Tue 26-May
2026:146:16:15:49Obsid: 30417 SI: ACIS-I (10 ksec) Target: Abell 3558 SE - 0:4412:15 PM Tue 26-May
2026:146:17:00:00--------------- NOW --------------- 0:00 1:00 PM Tue 26-May
2026:146:19:02:29Maneuver to 199.09681 29.11693 225.439 [2026:146:19:30:40] 2:02 3:02 PM Tue 26-May
2026:146:19:06:04Grating: LETG 2:06 3:06 PM Tue 26-May
2026:146:19:35:00Comm pass on DSS-56 (duration 2:30) 2:35 3:35 PM Tue 26-May
2026:146:19:46:53Obsid: 32347 SI: HRC-S (7 ksec) Target: HZ 43 2:46 3:46 PM Tue 26-May
2026:146:21:59:45Maneuver to 202.11181 -31.57727 275.543 [2026:146:22:27:54] 4:59 5:59 PM Tue 26-May
2026:146:22:00:35Grating: NONE 5:00 6:00 PM Tue 26-May
2026:146:22:32:24Obsid: 32364 SI: ACIS-I (10 ksec) Target: Abell 3558 SE 5:32 6:32 PM Tue 26-May
2026:147:01:00:00Comm pass on DSS-54 (duration 1:00) 8:00 9:00 PM Tue 26-May
2026:147:01:19:04Maneuver to 134.98738 -43.90248 242.208 [2026:147:01:42:05] 8:19 9:19 PM Tue 26-May
2026:147:01:46:35Obsid: 30097 SI: ACIS-I (29 ksec) Target: [MWE2019] 1-435 8:46 9:46 PM Tue 26-May
2026:147:09:49:55Maneuver to 258.24124 64.05989 166.641 [2026:147:10:32:45] 16:49 5:49 AM Wed 27-May
2026:147:10:37:15Obsid: 30430 SI: ACIS-I (10 ksec) Target: Abell 2255 17:37 6:37 AM Wed 27-May
2026:147:11:00:00Comm pass on DSS-26 (duration 0:45) 18:00 7:00 AM Wed 27-May
2026:147:13:23:55Maneuver to 238.95194 11.19244 188.805 [2026:147:13:47:12] 20:23 9:23 AM Wed 27-May
2026:147:13:51:42Obsid: 30437 SI: ACIS-I (30 ksec) Target: PG 1553+113 20:51 9:51 AM Wed 27-May
2026:147:17:45:00Comm pass on DSS-36 (duration 1:00) 1d 00:45 1:45 PM Wed 27-May
2026:147:22:24:31Load MAY2526A:CL147:2203 [2026:149:08:16:37] 1d 05:24 6:24 PM Wed 27-May
2026:147:22:24:31Load MAY2526A:CL147:2203 [2026:149:08:16:37] 1d 05:24 6:24 PM Wed 27-May
2026:147:22:27:31Maneuver to 240.20000 11.85000 187.161 [2026:147:22:35:59] 1d 05:27 6:27 PM Wed 27-May
2026:147:22:31:05Grating: HETG 1d 05:31 6:31 PM Wed 27-May
2026:147:22:33:31RADMON Disable 1d 05:33 6:33 PM Wed 27-May
2026:147:22:40:29ER Obsid: 41460 (3 ksec) Purpose: Perigee Attitude 1d 05:40 6:40 PM Wed 27-May
2026:148:00:20:29Maneuver to 13.00000 47.00000 76.483 [2026:148:00:55:30] 1d 07:20 8:20 PM Wed 27-May
2026:148:01:00:00ER Obsid: 41459 (3 ksec) Purpose: Perigee Attitude 1d 08:00 9:00 PM Wed 27-May
2026:148:01:30:00Comm pass on DSS-54 (duration 1:00) 1d 08:30 9:30 PM Wed 27-May
2026:148:02:16:22Maneuver to 249.10000 -18.50000 125.088 [2026:148:02:55:30] 1d 09:1610:16 PM Wed 27-May
2026:148:03:00:00ER Obsid: 41458 (2 ksec) Purpose: Perigee Attitude 1d 10:0011:00 PM Wed 27-May
2026:148:03:54:32Maneuver to 242.00000 -23.00000 302.343 [2026:148:04:45:30] 1d 10:5411:54 PM Wed 27-May
2026:148:04:50:00ER Obsid: 41457 (1 ksec) Purpose: Perigee Attitude 1d 11:5012:50 AM Thu 28-May
2026:148:05:21:41Maneuver to 135.40000 -8.60000 245.150 [2026:148:05:55:30] 1d 12:21 1:21 AM Thu 28-May
2026:148:06:00:00ER Obsid: 41456 (3 ksec) Purpose: Perigee Attitude 1d 13:00 2:00 AM Thu 28-May
2026:148:07:37:50Maneuver to 105.00000 -6.00000 233.960 [2026:148:07:55:30] 1d 14:37 3:37 AM Thu 28-May
2026:148:08:00:00ER Obsid: 41455 (3 ksec) Purpose: Perigee Attitude 1d 15:00 4:00 AM Thu 28-May
2026:148:10:00:00Comm pass on DSS-24 (duration 1:00) 1d 17:00 6:00 AM Thu 28-May
2026:148:10:29:09Maneuver to 220.59630 -17.22749 255.735 [2026:148:11:05:14] 1d 17:29 6:29 AM Thu 28-May
2026:148:10:29:43Grating: NONE 1d 17:29 6:29 AM Thu 28-May
2026:148:10:51:52RADMON Enable 1d 17:51 6:51 AM Thu 28-May
2026:148:11:09:44Obsid: 30202 SI: ACIS-S (10 ksec) Target: NGC5728 1d 18:09 7:09 AM Thu 28-May
2026:148:13:56:24Maneuver to 135.15482 20.92101 246.000 [2026:148:14:28:00] 1d 20:56 9:56 AM Thu 28-May
2026:148:14:32:30Obsid: 30398 SI: ACIS-S (15 ksec) Target: ZwCl 0857.9+210 1d 21:3210:32 AM Thu 28-May
2026:148:17:15:00Comm pass on DSS-54 (duration 1:00) 2d 00:15 1:15 PM Thu 28-May
2026:148:18:42:30Maneuver to 220.59611 -17.22652 255.727 [2026:148:19:14:07] 2d 01:42 2:42 PM Thu 28-May
2026:148:19:18:37Obsid: 32361 SI: ACIS-S (10 ksec) Target: NGC5728 2d 02:18 3:18 PM Thu 28-May
2026:148:22:05:17Maneuver to 135.15480 20.92160 246.000 [2026:148:22:36:53] 2d 05:05 6:05 PM Thu 28-May
2026:148:22:41:23Obsid: 32363 SI: ACIS-S (15 ksec) Target: ZwCl 0857.9+210 2d 05:41 6:41 PM Thu 28-May
2026:149:00:55:00Comm pass on DSS-65 (duration 1:00) 2d 07:55 8:55 PM Thu 28-May
2026:149:02:51:23Maneuver to 220.59605 -17.22612 255.695 [2026:149:03:23:00] 2d 09:5110:51 PM Thu 28-May
2026:149:03:27:30Obsid: 32362 SI: ACIS-S (10 ksec) Target: NGC5728 2d 10:2711:27 PM Thu 28-May
2026:149:06:14:10Maneuver to 149.86337 30.77355 242.998 [2026:149:06:44:13] 2d 13:14 2:14 AM Fri 29-May
2026:149:06:48:43Obsid: 29860 SI: ACIS-S (20 ksec) Target: Leo A 2d 13:48 2:48 AM Fri 29-May
2026:149:12:19:03Load MAY2526A:CL149:1203 [2026:150:23:16:47] 2d 19:19 8:19 AM Fri 29-May
2026:149:12:19:03Load MAY2526A:CL149:1203 [2026:150:23:16:47] 2d 19:19 8:19 AM Fri 29-May
2026:149:12:22:03Maneuver to 202.11101 -31.57459 273.335 [2026:149:12:51:45] 2d 19:22 8:22 AM Fri 29-May
2026:149:12:56:15Obsid: 32365 SI: ACIS-I (13 ksec) Target: Abell 3558 SE 2d 19:56 8:56 AM Fri 29-May
2026:149:13:50:00Comm pass on DSS-36 (duration 1:00) 2d 20:50 9:50 AM Fri 29-May
2026:149:16:32:55Maneuver to 188.70382 15.55655 229.002 [2026:149:16:58:05] 2d 23:3212:32 PM Fri 29-May

CXO and GOES rates
CXOGOESLimit
HRC shield024250
HRC MCP535430
P4GM---0.44300
P41GM---0.058.47
CXO: from snapshot at 2026:146:10:56:07 (- 6:03)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:20   P4GM: - 0:20   P41GM: - 0:20
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux81.75000012000> 30
2hr avg flux73.45000012000> 30
Orbital fluence2.4x106---2.0x109---
ACE data from 2026:146:16:45:00 (- 0:15)
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 24/2100Z to 25/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 438 km/s at 25/1820Z. Total IMF reached 9 nT at 25/1637Z. The maximum southward component of Bz reached -7 nT at 25/0709Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 748 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (26 May) and quiet to active levels on days two and three (27 May, 28 May).
Solar ActivityAnalysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 10 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 (26 May, 27 May, 28 May).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor