Page content updated: 2026:239:15:20:01 ( 11:20 AM Thu 27-Aug )

Key Snapshot and SOH Values (Δt = -11:24)
Obsid30409
Format2_NORM
RadMonENAB
CPE StatusNORM
RA40.661
Dec-21.562
Roll90.976
Pitch116.18
Sim Z75623
Sim Focus-467
HETG angle77.59
LETG angle75.71
SCS 107INAC
SCS 128ACT
SCS 129INAC
SCS 130ACT
RadMonENAB
SCS 131ACT
SCS 132INAC
SCS 133ACT
Snapshot from 2026:239:03:55:57 (Δt = -11:24)

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)
2026:239:12:10:00Comm pass on DSS-54 (duration 1:00)- 3:10 8:10 AM Thu 27-Aug
2026:239:15:20:01--------------- NOW --------------- 0:0011:20 AM Thu 27-Aug
2026:239:17:11:59Maneuver to 342.53543 -9.90006 91.210 [2026:239:17:36:09] 1:51 1:11 PM Thu 27-Aug
2026:239:17:40:39ER Obsid: 41196 (0 ksec) Purpose: Intermediate Attitud 2:20 1:40 PM Thu 27-Aug
2026:239:17:56:20Maneuver to 35.61849 -8.96936 96.265 [2026:239:18:19:00] 2:36 1:56 PM Thu 27-Aug
2026:239:18:23:30Obsid: 31998 SI: ACIS-S (12 ksec) Target: SDSS J022226.11 3:03 2:23 PM Thu 27-Aug
2026:239:21:46:50Maneuver to 65.06417 19.22083 99.708 [2026:239:22:06:56] 6:26 5:46 PM Thu 27-Aug
2026:239:22:31:14Obsid: 31061 SI: HRC-I (5 ksec) Target: HD 27406 7:11 6:31 PM Thu 27-Aug
2026:239:23:54:34Maneuver to 341.54588 -5.45835 113.001 [2026:240:00:24:37] 8:34 7:54 PM Thu 27-Aug
2026:240:00:29:07Obsid: 32516 SI: ACIS-S (15 ksec) Target: WISE J2246-0526 9:09 8:29 PM Thu 27-Aug
2026:240:01:40:00Comm pass on DSS-23 (duration 2:00) 10:19 9:40 PM Thu 27-Aug
2026:240:04:39:07Maneuver to 26.71456 48.43542 127.590 [2026:240:05:06:34] 13:1912:39 AM Fri 28-Aug
2026:240:05:11:04Obsid: 32510 SI: ACIS-S (22 ksec) Target: MASTER J0146+48 13:51 1:11 AM Fri 28-Aug
2026:240:10:00:00Comm pass on DSS-36 (duration 1:00) 18:39 6:00 AM Fri 28-Aug
2026:240:11:30:43Load AUG2426A:CL240:1101 [2026:241:22:33:39] 20:10 7:30 AM Fri 28-Aug
2026:240:11:30:43Load AUG2426A:CL240:1101 [2026:241:22:33:39] 20:10 7:30 AM Fri 28-Aug
2026:240:11:33:43Maneuver to 341.10950 -6.62394 125.532 [2026:240:12:00:28] 20:13 7:33 AM Fri 28-Aug
2026:240:11:37:18Grating: HETG 20:17 7:37 AM Fri 28-Aug
2026:240:11:39:21RADMON Disable 20:19 7:39 AM Fri 28-Aug
2026:240:12:04:58ER Obsid: 41195 (0 ksec) Purpose: Perigee Attitude 20:44 8:04 AM Fri 28-Aug
2026:240:12:20:39Maneuver to 114.07829 42.61688 61.210 [2026:240:12:59:32] 21:00 8:20 AM Fri 28-Aug
2026:240:13:04:02ER Obsid: 41194 (3 ksec) Purpose: Perigee Attitude 21:44 9:04 AM Fri 28-Aug
2026:240:13:54:02Maneuver to 339.24736 -3.55599 158.300 [2026:240:14:32:43] 22:34 9:54 AM Fri 28-Aug
2026:240:14:37:13ER Obsid: 41193 (0 ksec) Purpose: Perigee Attitude 23:1710:37 AM Fri 28-Aug
2026:240:14:52:54Maneuver to 332.38405 -10.98482 286.197 [2026:240:15:32:34] 23:3210:52 AM Fri 28-Aug
2026:240:15:37:04ER Obsid: 41192 (3 ksec) Purpose: Perigee Attitude 1d 00:1711:37 AM Fri 28-Aug
2026:240:16:42:39Maneuver to 225.60000 -36.40000 249.280 [2026:240:17:15:30] 1d 01:2212:42 PM Fri 28-Aug
2026:240:17:20:00ER Obsid: 41191 (3 ksec) Purpose: Perigee Attitude 1d 01:59 1:20 PM Fri 28-Aug
2026:240:18:25:00Comm pass on DSS-36 (duration 1:00) 1d 03:04 2:25 PM Fri 28-Aug
2026:240:21:47:39Maneuver to 332.38405 -10.98482 286.586 [2026:240:22:20:30] 1d 06:27 5:47 PM Fri 28-Aug
2026:240:22:25:00ER Obsid: 41190 (0 ksec) Purpose: Perigee Attitude 1d 07:04 6:25 PM Fri 28-Aug
2026:240:23:43:24Maneuver to 220.59956 -17.22891 249.000 [2026:241:00:18:10] 1d 08:23 7:43 PM Fri 28-Aug
2026:240:23:43:58Grating: NONE 1d 08:23 7:43 PM Fri 28-Aug
2026:241:00:04:48RADMON Enable 1d 08:44 8:04 PM Fri 28-Aug
2026:241:00:22:40Obsid: 30203 SI: ACIS-S (16 ksec) Target: NGC5728 1d 09:02 8:22 PM Fri 28-Aug
2026:241:01:00:00Comm pass on DSS-23 (duration 1:00) 1d 09:39 9:00 PM Fri 28-Aug
2026:241:04:49:20Maneuver to 324.99372 -8.10572 262.780 [2026:241:05:23:04] 1d 13:2912:49 AM Sat 29-Aug
2026:241:05:27:34Obsid: 32508 SI: ACIS-I (10 ksec) Target: RMJ214001.0-080 1d 14:07 1:27 AM Sat 29-Aug
2026:241:07:55:00Comm pass on DSS-24 (duration 0:45) 1d 16:34 3:55 AM Sat 29-Aug
2026:241:08:14:14Maneuver to 220.59948 -17.22785 249.000 [2026:241:08:47:57] 1d 16:54 4:14 AM Sat 29-Aug
2026:241:08:52:27Obsid: 32515 SI: ACIS-S (16 ksec) Target: NGC5728 1d 17:32 4:52 AM Sat 29-Aug
2026:241:13:22:27Maneuver to 327.46768 -18.97885 313.053 [2026:241:13:55:52] 1d 22:02 9:22 AM Sat 29-Aug
2026:241:14:00:22Obsid: 32507 SI: ACIS-S (10 ksec) Target: LEDA2831062 1d 22:4010:00 AM Sat 29-Aug
2026:241:16:47:02Maneuver to 317.98578 -58.86319 334.872 [2026:241:17:08:55] 2d 01:2712:47 PM Sat 29-Aug
2026:241:17:08:55ER Obsid: 41189 (0 ksec) Purpose: Intermediate Attitud 2d 01:48 1:08 PM Sat 29-Aug
2026:241:17:09:16Maneuver to 135.56262 -40.55959 148.022 [2026:241:17:38:11] 2d 01:49 1:09 PM Sat 29-Aug
2026:241:17:09:50Grating: HETG 2d 01:49 1:09 PM Sat 29-Aug
2026:241:17:20:00Comm pass on DSS-54 (duration 0:30) 2d 01:59 1:20 PM Sat 29-Aug
2026:241:17:42:41Obsid: 30505 SI: ACIS-S (15 ksec) Target: Vela X-1 2d 02:22 1:42 PM Sat 29-Aug
2026:241:21:52:41Maneuver to 267.17459 -27.14338 274.994 [2026:241:22:26:07] 2d 06:32 5:52 PM Sat 29-Aug
2026:241:21:56:15Grating: NONE 2d 06:36 5:56 PM Sat 29-Aug
2026:241:22:30:37Obsid: 30135 SI: ACIS-S (30 ksec) Target: SNR G1.9+0.3 2d 07:10 6:30 PM Sat 29-Aug
2026:242:01:40:00Comm pass on DSS-24 (duration 1:00) 2d 10:19 9:40 PM Sat 29-Aug
2026:242:01:40:00Load AUG2426A:CL242:0101 [2026:242:22:06:33] 2d 10:19 9:40 PM Sat 29-Aug
2026:242:01:40:00Load AUG2426A:CL242:0101 [2026:242:22:06:33] 2d 10:19 9:40 PM Sat 29-Aug
2026:242:06:50:37Maneuver to 271.35953 2.51141 259.136 [2026:242:07:09:05] 2d 15:30 2:50 AM Sun 30-Aug
2026:242:07:33:02Obsid: 26973 SI: HRC-I (5 ksec) Target: 70 OPH 2d 16:13 3:33 AM Sun 30-Aug
2026:242:08:56:22Maneuver to 325.21386 -8.36216 266.059 [2026:242:09:19:34] 2d 17:36 4:56 AM Sun 30-Aug
2026:242:09:24:04Obsid: 32509 SI: ACIS-I (9 ksec) Target: RMJ214053.7-082 2d 18:04 5:24 AM Sun 30-Aug
2026:242:12:00:14Maneuver to 234.90000 -40.90000 254.293 [2026:242:12:31:22] 2d 20:40 8:00 AM Sun 30-Aug
2026:242:12:31:22ER Obsid: 41188 (0 ksec) Purpose: Intermediate Attitud 2d 21:11 8:31 AM Sun 30-Aug
2026:242:12:31:43Maneuver to 134.87897 -43.54084 145.017 [2026:242:12:59:27] 2d 21:11 8:31 AM Sun 30-Aug
2026:242:13:03:57Obsid: 32512 SI: ACIS-I (14 ksec) Target: [CTC2021] Vela 2d 21:43 9:03 AM Sun 30-Aug
2026:242:14:30:00Comm pass on DSS-54 (duration 1:00) 2d 23:0910:30 AM Sun 30-Aug

CXO and GOES rates
CXOGOESLimit
HRC shield017250
HRC MCP484430
P4GM---0.14300
P41GM---0.018.47
CXO: from snapshot at 2026:239:03:55:57 (-11:24)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:15   P4GM: - 0:15   P41GM: - 0:15
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux23.85000012000> 30
2hr avg flux21.45000012000> 30
Orbital fluence1.2x109---2.0x109---
ACE data from 2026:239:15:05:00 (- 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 25/2100Z to 26/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 330 km/s at 26/0040Z. Total IMF reached 4 nT at 26/0040z. The maximum southward component of Bz reached -2 nT at 26/1228z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1654 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at unsettled to minor storm levels on day one (27 Aug), active to major storm levels on day two (28 Aug) and unsettled to major storm levels on day three (29 Aug). Protons have a slight chance of crossing threshold on days one, two, and three (27 Aug, 28 Aug, 29 Aug).
Solar ActivityAnalysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity has been at moderate levels for the past 24 hours. There are currently 6 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be moderate with a slight chance for an X-class flare on days one, two, and three (27 Aug, 28 Aug, 29 Aug).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor