Page content updated: 2026:148:16:34:01 ( 12:34 PM Thu 28-May )

Key Snapshot and SOH Values (Δt = - 5:37)
Obsid30202
Format2_NORM
RadMonENAB
CPE StatusNORM
RA203.933
Dec-18.725
Roll251.858
Pitch139.97
Sim Z55562
Sim Focus-535
HETG angle77.59
LETG angle76.09
SCS 107INAC
SCS 128ACT
SCS 129ACT
SCS 130ACT
RadMonENAB
SCS 131ACT
SCS 132ACT
SCS 133ACT
Snapshot from 2026:148:10:56:30 (Δt = - 5:37)

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)
2026:148:04:50:00ER Obsid: 41457 (1 ksec) Purpose: Perigee Attitude -11:4412:50 AM Thu 28-May
2026:148:05:21:41Maneuver to 135.40000 -8.60000 245.150 [2026:148:05:55:30]-11:12 1:21 AM Thu 28-May
2026:148:06:00:00ER Obsid: 41456 (3 ksec) Purpose: Perigee Attitude -10:34 2:00 AM Thu 28-May
2026:148:07:37:50Maneuver to 105.00000 -6.00000 233.960 [2026:148:07:55:30]- 8:56 3:37 AM Thu 28-May
2026:148:08:00:00ER Obsid: 41455 (3 ksec) Purpose: Perigee Attitude - 8:34 4:00 AM Thu 28-May
2026:148:10:00:00Comm pass on DSS-24 (duration 1:00)- 6:34 6:00 AM Thu 28-May
2026:148:10:29:09Maneuver to 220.59630 -17.22749 255.735 [2026:148:11:05:14]- 6:04 6:29 AM Thu 28-May
2026:148:10:29:43Grating: NONE- 6:04 6:29 AM Thu 28-May
2026:148:10:51:52RADMON Enable- 5:42 6:51 AM Thu 28-May
2026:148:11:09:44Obsid: 30202 SI: ACIS-S (10 ksec) Target: NGC5728 - 5:24 7:09 AM Thu 28-May
2026:148:13:56:24Maneuver to 135.15482 20.92101 246.000 [2026:148:14:28:00]- 2:37 9:56 AM Thu 28-May
2026:148:14:32:30Obsid: 30398 SI: ACIS-S (15 ksec) Target: ZwCl 0857.9+210 - 2:0110:32 AM Thu 28-May
2026:148:16:34:01--------------- NOW --------------- 0:0012:34 PM Thu 28-May
2026:148:17:15:00Comm pass on DSS-54 (duration 1:00) 0:40 1:15 PM Thu 28-May
2026:148:18:42:30Maneuver to 220.59611 -17.22652 255.727 [2026:148:19:14:07] 2:08 2:42 PM Thu 28-May
2026:148:19:18:37Obsid: 32361 SI: ACIS-S (10 ksec) Target: NGC5728 2:44 3:18 PM Thu 28-May
2026:148:22:05:17Maneuver to 135.15480 20.92160 246.000 [2026:148:22:36:53] 5:31 6:05 PM Thu 28-May
2026:148:22:41:23Obsid: 32363 SI: ACIS-S (15 ksec) Target: ZwCl 0857.9+210 6:07 6:41 PM Thu 28-May
2026:149:00:55:00Comm pass on DSS-65 (duration 1:00) 8:20 8:55 PM Thu 28-May
2026:149:02:51:23Maneuver to 220.59605 -17.22612 255.695 [2026:149:03:23:00] 10:1710:51 PM Thu 28-May
2026:149:03:27:30Obsid: 32362 SI: ACIS-S (10 ksec) Target: NGC5728 10:5311:27 PM Thu 28-May
2026:149:06:14:10Maneuver to 149.86337 30.77355 242.998 [2026:149:06:44:13] 13:40 2:14 AM Fri 29-May
2026:149:06:48:43Obsid: 29860 SI: ACIS-S (20 ksec) Target: Leo A 14:14 2:48 AM Fri 29-May
2026:149:12:19:03Load MAY2526A:CL149:1203 [2026:150:23:16:47] 19:45 8:19 AM Fri 29-May
2026:149:12:19:03Load MAY2526A:CL149:1203 [2026:150:23:16:47] 19:45 8:19 AM Fri 29-May
2026:149:12:22:03Maneuver to 202.11101 -31.57459 273.335 [2026:149:12:51:45] 19:48 8:22 AM Fri 29-May
2026:149:12:56:15Obsid: 32365 SI: ACIS-I (13 ksec) Target: Abell 3558 SE 20:22 8:56 AM Fri 29-May
2026:149:13:50:00Comm pass on DSS-36 (duration 1:00) 21:15 9:50 AM Fri 29-May
2026:149:16:32:55Maneuver to 188.70382 15.55655 229.002 [2026:149:16:58:05] 23:5812:32 PM Fri 29-May
2026:149:17:02:35Obsid: 30170 SI: ACIS-S (29 ksec) Target: NGC4540 1d 00:28 1:02 PM Fri 29-May
2026:149:18:55:00Comm pass on DSS-54 (duration 1:00) 1d 02:20 2:55 PM Fri 29-May
2026:150:01:05:55Maneuver to 304.91013 38.71925 126.875 [2026:150:01:39:41] 1d 08:31 9:05 PM Fri 29-May
2026:150:01:09:30Grating: HETG 1d 08:35 9:09 PM Fri 29-May
2026:150:01:44:11Obsid: 31523 SI: ACIS-S (32 ksec) Target: V444 Cyg 1d 09:10 9:44 PM Fri 29-May
2026:150:02:45:00Comm pass on DSS-65 (duration 0:50) 1d 10:1010:45 PM Fri 29-May
2026:150:10:00:00Comm pass on DSS-24 (duration 1:00) 1d 17:25 6:00 AM Sat 30-May
2026:150:10:37:31Maneuver to 262.67956 -21.46997 93.925 [2026:150:11:06:35] 1d 18:03 6:37 AM Sat 30-May
2026:150:10:41:05Grating: NONE 1d 18:07 6:41 AM Sat 30-May
2026:150:11:11:05Obsid: 30952 SI: ACIS-S (9 ksec) Target: Kepler's SNR 1d 18:37 7:11 AM Sat 30-May
2026:150:13:57:16Maneuver to 16.50000 13.80000 107.002 [2026:150:14:34:15] 1d 21:23 9:57 AM Sat 30-May
2026:150:14:00:50Grating: HETG 1d 21:2610:00 AM Sat 30-May
2026:150:14:02:53RADMON Disable 1d 21:2810:02 AM Sat 30-May
2026:150:14:38:45ER Obsid: 41454 (3 ksec) Purpose: Perigee Attitude 1d 22:0410:38 AM Sat 30-May
2026:150:15:56:24Maneuver to 252.50000 -21.07000 99.193 [2026:150:16:35:30] 1d 23:2211:56 AM Sat 30-May
2026:150:16:15:00Comm pass on DSS-36 (duration 1:00) 1d 23:4012:15 PM Sat 30-May
2026:150:16:40:00ER Obsid: 41453 (2 ksec) Purpose: Perigee Attitude 2d 00:0512:40 PM Sat 30-May
2026:150:17:41:35Maneuver to 325.90000 14.00000 113.966 [2026:150:18:10:30] 2d 01:07 1:41 PM Sat 30-May
2026:150:18:15:00ER Obsid: 41452 (2 ksec) Purpose: Perigee Attitude 2d 01:40 2:15 PM Sat 30-May
2026:150:19:09:09Maneuver to 145.00000 9.00000 249.678 [2026:150:19:55:30] 2d 02:35 3:09 PM Sat 30-May
2026:150:20:00:00ER Obsid: 41451 (3 ksec) Purpose: Perigee Attitude 2d 03:25 4:00 PM Sat 30-May
2026:150:22:37:29Maneuver to 241.00000 -20.00000 252.162 [2026:150:23:10:30] 2d 06:03 6:37 PM Sat 30-May
2026:150:23:15:00ER Obsid: 41450 (3 ksec) Purpose: Perigee Attitude 2d 06:40 7:15 PM Sat 30-May
2026:151:01:00:00Comm pass on DSS-24 (duration 1:00) 2d 08:25 9:00 PM Sat 30-May
2026:151:01:00:00Load MAY2526A:CL151:0103 [2026:151:22:30:10] 2d 08:25 9:00 PM Sat 30-May
2026:151:01:00:00Load MAY2526A:CL151:0103 [2026:151:22:30:10] 2d 08:25 9:00 PM Sat 30-May
2026:151:01:22:47Maneuver to 149.86327 30.77116 242.998 [2026:151:01:56:36] 2d 08:48 9:22 PM Sat 30-May
2026:151:01:23:22Grating: NONE 2d 08:49 9:23 PM Sat 30-May
2026:151:01:43:14RADMON Enable 2d 09:09 9:43 PM Sat 30-May
2026:151:02:01:06Obsid: 32359 SI: ACIS-S (19 ksec) Target: Leo A 2d 09:2710:01 PM Sat 30-May
2026:151:07:17:46Maneuver to 258.24587 64.06149 170.331 [2026:151:07:44:55] 2d 14:43 3:17 AM Sun 31-May
2026:151:07:49:25Obsid: 32366 SI: ACIS-I (20 ksec) Target: Abell 2255 2d 15:15 3:49 AM Sun 31-May
2026:151:10:00:00Comm pass on DSS-26 (duration 1:00) 2d 17:25 6:00 AM Sun 31-May
2026:151:13:22:45Maneuver to 304.91011 38.71980 128.075 [2026:151:13:42:01] 2d 20:48 9:22 AM Sun 31-May
2026:151:13:26:19Grating: HETG 2d 20:52 9:26 AM Sun 31-May
2026:151:13:53:30Obsid: 31522 SI: ACIS-S (31 ksec) Target: V444 Cyg 2d 21:19 9:53 AM Sun 31-May

CXO and GOES rates
CXOGOESLimit
HRC shield016250
HRC MCP637430
P4GM---0.03300
P41GM---0.008.47
CXO: from snapshot at 2026:148:10:56:30 (- 5:37)
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 flux9.655000012000> 30
2hr avg flux10.95000012000> 30
Orbital fluence2.3x105---2.0x109---
ACE data from 2026:148:16:20:00 (- 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 26/2100Z to 27/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 445 km/s at 26/2100Z. Total IMF reached 7 nT at 26/2122Z. The maximum southward component of Bz reached -7 nT at 26/2124Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 403 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (28 May), quiet to unsettled levels on day two (29 May) and quiet levels on day three (30 May).
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 11 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 May, 29 May, 30 May).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor