Page content updated: 2026:199:08:19:00 ( 4:19 AM Sat 18-Jul )

Key Snapshot and SOH Values (Δt = - 4:57)
Obsid30345
Format2_NORM
RadMonENAB
CPE StatusNORM
RA49.858
Dec41.490
Roll91.962
Pitch59.15
Sim Z92903
Sim Focus-535
HETG angle77.59
LETG angle75.71
SCS 107INAC
SCS 128ACT
SCS 129ACT
SCS 130ACT
RadMonENAB
SCS 131ACT
SCS 132ACT
SCS 133ACT
Snapshot from 2026:199:03:21:26 (Δt = - 4:57)

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)
2026:198:20:45:41Maneuver to 308.05412 -21.25953 93.005 [2026:198:21:22:11]-11:33 4:45 PM Fri 17-Jul
2026:198:21:26:41Obsid: 31662 SI: ACIS-S (12 ksec) Target: PSO J308.0416-2 -10:52 5:26 PM Fri 17-Jul
2026:199:00:46:41Maneuver to 49.86202 41.49104 91.959 [2026:199:01:23:10]- 7:32 8:46 PM Fri 17-Jul
2026:199:01:27:40Obsid: 30345 SI: ACIS-I (15 ksec) Target: Perseus cluster - 6:51 9:27 PM Fri 17-Jul
2026:199:02:25:00Comm pass on DSS-65 (duration 1:00)- 5:5410:25 PM Fri 17-Jul
2026:199:05:46:00Maneuver to 308.05440 -21.26111 92.005 [2026:199:06:22:31]- 2:33 1:46 AM Sat 18-Jul
2026:199:06:27:01Obsid: 32443 SI: ACIS-S (12 ksec) Target: PSO J308.0416-2 - 1:51 2:27 AM Sat 18-Jul
2026:199:08:19:00--------------- NOW --------------- 0:00 4:19 AM Sat 18-Jul
2026:199:09:47:01Maneuver to 49.86297 41.48982 92.133 [2026:199:10:23:33] 1:28 5:47 AM Sat 18-Jul
2026:199:10:10:00Comm pass on DSS-26 (duration 1:00) 1:51 6:10 AM Sat 18-Jul
2026:199:10:28:03Obsid: 32436 SI: ACIS-I (15 ksec) Target: Perseus cluster 2:09 6:28 AM Sat 18-Jul
2026:199:14:38:03Maneuver to 308.05501 -21.26222 92.005 [2026:199:15:14:34] 6:1910:38 AM Sat 18-Jul
2026:199:15:19:04Obsid: 32444 SI: ACIS-S (12 ksec) Target: PSO J308.0416-2 7:0011:19 AM Sat 18-Jul
2026:199:17:45:00Comm pass on DSS-65 (duration 1:00) 9:26 1:45 PM Sat 18-Jul
2026:199:18:39:04Maneuver to 50.07992 41.48878 92.174 [2026:199:19:15:38] 10:20 2:39 PM Sat 18-Jul
2026:199:19:20:08Obsid: 30368 SI: ACIS-I (16 ksec) Target: Perseus cluster 11:01 3:20 PM Sat 18-Jul
2026:199:23:43:48Load JUL1326A:CL199:2301 [2026:200:20:34:39] 15:24 7:43 PM Sat 18-Jul
2026:199:23:43:48Load JUL1326A:CL199:2301 [2026:200:20:34:39] 15:24 7:43 PM Sat 18-Jul
2026:199:23:46:48Maneuver to 308.05602 -21.26284 93.005 [2026:200:00:23:20] 15:27 7:46 PM Sat 18-Jul
2026:200:00:00:00Comm pass on DSS-65 (duration 1:00) 15:41 8:00 PM Sat 18-Jul
2026:200:00:27:50Obsid: 32445 SI: ACIS-S (12 ksec) Target: PSO J308.0416-2 16:08 8:27 PM Sat 18-Jul
2026:200:03:47:50Maneuver to 50.08050 41.48813 92.366 [2026:200:04:24:22] 19:2811:47 PM Sat 18-Jul
2026:200:04:28:52Obsid: 32437 SI: ACIS-I (10 ksec) Target: Perseus cluster 20:0912:28 AM Sun 19-Jul
2026:200:07:15:53Maneuver to 185.48900 16.16000 254.369 [2026:200:07:56:53] 22:56 3:15 AM Sun 19-Jul
2026:200:08:01:23ER Obsid: 41329 (0 ksec) Purpose: Intermediate Attitud 23:42 4:01 AM Sun 19-Jul
2026:200:08:17:04Maneuver to 274.86890 -25.14300 285.991 [2026:200:08:49:53] 23:58 4:17 AM Sun 19-Jul
2026:200:08:54:23Obsid: 32440 SI: ACIS-I (10 ksec) Target: V4641 Sgr N1 1d 00:35 4:54 AM Sun 19-Jul
2026:200:10:10:00Comm pass on DSS-24 (duration 1:00) 1d 01:51 6:10 AM Sun 19-Jul
2026:200:11:41:03Maneuver to 185.37706 14.61530 248.002 [2026:200:12:13:57] 1d 03:22 7:41 AM Sun 19-Jul
2026:200:12:18:27Obsid: 32432 SI: ACIS-S (10 ksec) Target: NGC4298 1d 03:59 8:18 AM Sun 19-Jul
2026:200:15:05:07Maneuver to 13.78383 -37.72521 88.008 [2026:200:15:50:46] 1d 06:4611:05 AM Sun 19-Jul
2026:200:15:55:16Obsid: 32438 SI: ACIS-S (14 ksec) Target: sn2010da 1d 07:3611:55 AM Sun 19-Jul
2026:200:18:30:00Comm pass on DSS-65 (duration 1:00) 1d 10:11 2:30 PM Sun 19-Jul
2026:200:19:50:16Maneuver to 197.99958 -29.30280 246.697 [2026:200:20:26:52] 1d 11:31 3:50 PM Sun 19-Jul
2026:200:19:53:50Grating: HETG 1d 11:34 3:53 PM Sun 19-Jul
2026:200:19:55:53RADMON Disable 1d 11:36 3:55 PM Sun 19-Jul
2026:200:20:31:22ER Obsid: 41328 (0 ksec) Purpose: Perigee Attitude 1d 12:12 4:31 PM Sun 19-Jul
2026:200:20:45:00Load JUL2026A:CL200:2001 [2026:202:07:14:41] 1d 12:26 4:45 PM Sun 19-Jul
2026:200:20:45:00Load JUL2026A:CL200:2001 [2026:202:07:14:41] 1d 12:26 4:45 PM Sun 19-Jul
2026:200:20:48:00Maneuver to 297.00000 -22.00000 304.539 [2026:200:21:18:17] 1d 12:29 4:48 PM Sun 19-Jul
2026:200:21:22:47ER Obsid: 41327 (2 ksec) Purpose: Perigee Attitude 1d 13:03 5:22 PM Sun 19-Jul
2026:200:22:17:47Maneuver to 197.90000 -28.70000 246.601 [2026:200:22:48:09] 1d 13:58 6:17 PM Sun 19-Jul
2026:200:22:20:00Comm pass on DSS-54 (duration 1:35) 1d 14:01 6:20 PM Sun 19-Jul
2026:200:22:52:39ER Obsid: 41326 (4 ksec) Purpose: Perigee Attitude 1d 14:33 6:52 PM Sun 19-Jul
2026:201:00:25:08Maneuver to 297.00000 -22.00000 302.748 [2026:201:00:55:30] 1d 16:06 8:25 PM Sun 19-Jul
2026:201:01:00:00ER Obsid: 41325 (2 ksec) Purpose: Perigee Attitude 1d 16:41 9:00 PM Sun 19-Jul
2026:201:01:55:13Maneuver to 198.00000 -29.30000 246.599 [2026:201:02:25:30] 1d 17:36 9:55 PM Sun 19-Jul
2026:201:02:30:00ER Obsid: 41324 (3 ksec) Purpose: Perigee Attitude 1d 18:1110:30 PM Sun 19-Jul
2026:201:03:46:37Maneuver to 40.00000 -21.00000 113.179 [2026:201:04:25:30] 1d 19:2711:46 PM Sun 19-Jul
2026:201:04:30:00ER Obsid: 41323 (3 ksec) Purpose: Perigee Attitude 1d 20:1112:30 AM Mon 20-Jul
2026:201:06:25:31Maneuver to 307.00000 -22.00000 81.163 [2026:201:06:55:30] 1d 22:06 2:25 AM Mon 20-Jul
2026:201:07:00:00ER Obsid: 41322 (2 ksec) Purpose: Perigee Attitude 1d 22:41 3:00 AM Mon 20-Jul
2026:201:08:12:27Maneuver to 40.67122 -21.56084 113.344 [2026:201:08:42:32] 1d 23:53 4:12 AM Mon 20-Jul
2026:201:08:13:01Grating: NONE 1d 23:54 4:13 AM Mon 20-Jul
2026:201:08:29:10RADMON Enable 2d 00:10 4:29 AM Mon 20-Jul
2026:201:08:47:02Obsid: 30022 SI: ACIS-S (18 ksec) Target: ClG J0242-2132 2d 00:28 4:47 AM Mon 20-Jul
2026:201:10:50:00Comm pass on DSS-56 (duration 0:45) 2d 02:31 6:50 AM Mon 20-Jul
2026:201:13:47:02Maneuver to 309.48707 -40.15764 26.348 [2026:201:14:16:19] 2d 05:28 9:47 AM Mon 20-Jul
2026:201:14:20:49Obsid: 29983 SI: ACIS-S (15 ksec) Target: WGD2038-4008 2d 06:0110:20 AM Mon 20-Jul
2026:201:18:30:49Maneuver to 40.67023 -21.56018 113.093 [2026:201:19:00:04] 2d 10:11 2:30 PM Mon 20-Jul
2026:201:19:04:34Obsid: 30401 SI: ACIS-S (25 ksec) Target: ClG J0242-2132 2d 10:45 3:04 PM Mon 20-Jul
2026:201:22:05:00Comm pass on DSS-53 (duration 1:00) 2d 13:46 6:05 PM Mon 20-Jul
2026:202:02:01:14Maneuver to 309.48753 -40.15622 25.029 [2026:202:02:30:36] 2d 17:4210:01 PM Mon 20-Jul
2026:202:02:35:06Obsid: 32450 SI: ACIS-S (15 ksec) Target: WGD2038-4008 2d 18:1610:35 PM Mon 20-Jul
2026:202:06:45:06Maneuver to 40.66921 -21.55951 112.806 [2026:202:07:14:26] 2d 22:26 2:45 AM Tue 21-Jul
2026:202:07:18:56Obsid: 30405 SI: ACIS-S (26 ksec) Target: ClG J0242-2132 2d 22:59 3:18 AM Tue 21-Jul

CXO and GOES rates
CXOGOESLimit
HRC shield017250
HRC MCP484430
P4GM---0.03300
P41GM---0.018.47
CXO: from snapshot at 2026:199:03:21:26 (- 4:57)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:19   P4GM: - 0:16   P41GM: - 0:19
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux12.55000012000> 30
2hr avg flux11.25000012000> 30
Orbital fluence6.5x105---2.0x109---
ACE data from 2026:199:08:05:00 (- 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 16/2100Z to 17/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 431 km/s, and the total IMF reached 5 nT. The maximum southward component of Bz reached -4 nT. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1988 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (18 Jul) and quiet levels on days two and three (19 Jul, 20 Jul).
Solar ActivityAnalysis of Solar Active Regions and Activity from 16/2100Z to 17/2100Z: 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 likely to be low with a slight chance for an M-class flare on days one, two, and three (18 Jul, 19 Jul, 20 Jul).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor