Page content updated: 2025:355:22:18:00 ( 5:18 PM Sun 21-Dec )

Key Snapshot and SOH Values (Δt = - 3:57)
Obsid32053
Format2_NORM
RadMonENAB
CPE StatusNORM
RA50.922
Dec44.521
Roll250.562
Pitch142.00
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 2025:355:18:20:27 (Δt = - 3:57)

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)
2025:355:11:22:07Maneuver to 353.75238 -8.73190 285.998 [2025:355:11:49:20]-10:55 6:22 AM Sun 21-Dec
2025:355:11:50:00Comm pass on DSS-26 (duration 1:00)-10:28 6:50 AM Sun 21-Dec
2025:355:11:53:50Obsid: 32050 SI: ACIS-S (10 ksec) Target: SDSSJ233504.22- -10:24 6:53 AM Sun 21-Dec
2025:355:14:40:30Maneuver to 49.94199 41.52861 253.839 [2025:355:15:07:42]- 7:37 9:40 AM Sun 21-Dec
2025:355:15:12:12Obsid: 32056 SI: ACIS-I (11 ksec) Target: Perseus cluster - 7:0510:12 AM Sun 21-Dec
2025:355:17:25:00Comm pass on DSS-56 (duration 1:00)- 4:5312:25 PM Sun 21-Dec
2025:355:18:15:32Maneuver to 149.96544 2.41653 64.000 [2025:355:19:00:31]- 4:02 1:15 PM Sun 21-Dec
2025:355:19:05:01Obsid: 32053 SI: ACIS-I (14 ksec) Target: Center of COSMO - 3:12 2:05 PM Sun 21-Dec
2025:355:22:18:00--------------- NOW --------------- 0:00 5:18 PM Sun 21-Dec
2025:355:22:55:21Load DEC2225A:CL355:2201 [2025:357:10:45:01] 0:37 5:55 PM Sun 21-Dec
2025:355:22:55:21Load DEC2225A:CL355:2201 [2025:357:10:45:01] 0:37 5:55 PM Sun 21-Dec
2025:355:22:58:21Maneuver to 35.62216 42.35433 264.993 [2025:355:23:43:40] 0:40 5:58 PM Sun 21-Dec
2025:355:23:48:10Obsid: 29826 SI: ACIS-S (15 ksec) Target: SN 1986J 1:30 6:48 PM Sun 21-Dec
2025:356:01:15:00Comm pass on DSS-26 (duration 1:00) 2:57 8:15 PM Sun 21-Dec
2025:356:03:58:10Maneuver to 97.66143 32.14856 141.001 [2025:356:04:30:15] 5:4010:58 PM Sun 21-Dec
2025:356:04:34:45ER Obsid: 41859 (0 ksec) Purpose: Intermediate Attitud 6:1611:34 PM Sun 21-Dec
2025:356:04:50:26Maneuver to 217.18534 17.37748 46.003 [2025:356:05:24:55] 6:3211:50 PM Sun 21-Dec
2025:356:05:29:25Obsid: 32062 SI: ACIS-S (10 ksec) Target: SDSS J142846.71 7:1112:29 AM Mon 22-Dec
2025:356:08:16:05Maneuver to 106.04050 38.49725 133.954 [2025:356:08:48:27] 9:58 3:16 AM Mon 22-Dec
2025:356:08:52:57Obsid: 31290 SI: ACIS-S (10 ksec) Target: 2MASX J07040344 10:34 3:52 AM Mon 22-Dec
2025:356:11:39:37Maneuver to 270.90037 25.75988 359.611 [2025:356:12:16:11] 13:21 6:39 AM Mon 22-Dec
2025:356:12:20:41ER Obsid: 41858 (0 ksec) Purpose: Intermediate Attitud 14:02 7:20 AM Mon 22-Dec
2025:356:12:36:22Maneuver to 4.80565 59.15909 279.105 [2025:356:13:02:59] 14:18 7:36 AM Mon 22-Dec
2025:356:12:36:56Grating: HETG 14:18 7:36 AM Mon 22-Dec
2025:356:13:07:29Obsid: 30087 SI: ACIS-S (11 ksec) Target: TV Cassiopeia 14:49 8:07 AM Mon 22-Dec
2025:356:14:45:00Comm pass on DSS-24 (duration 1:00) 16:27 9:45 AM Mon 22-Dec
2025:356:16:17:29Maneuver to 68.02954 -5.37137 323.267 [2025:356:16:52:47] 17:5911:17 AM Mon 22-Dec
2025:356:16:21:03Grating: NONE 18:0311:21 AM Mon 22-Dec
2025:356:16:57:17Obsid: 32075 SI: ACIS-S (15 ksec) Target: AT2025aarm 18:3911:57 AM Mon 22-Dec
2025:356:18:05:00Comm pass on DSS-56 (duration 1:00) 19:47 1:05 PM Mon 22-Dec
2025:356:21:09:47Maneuver to 90.90000 11.90000 359.529 [2025:356:21:31:14] 22:51 4:09 PM Mon 22-Dec
2025:356:21:13:22Grating: HETG 22:55 4:13 PM Mon 22-Dec
2025:356:21:15:25RADMON Disable 22:57 4:15 PM Mon 22-Dec
2025:356:21:35:44ER Obsid: 41857 (3 ksec) Purpose: Perigee Attitude 23:17 4:35 PM Mon 22-Dec
2025:356:22:25:44Maneuver to 90.90000 11.90000 359.320 [2025:356:22:29:44] 1d 00:07 5:25 PM Mon 22-Dec
2025:356:22:34:14ER Obsid: 41856 (3 ksec) Purpose: Perigee Attitude 1d 00:16 5:34 PM Mon 22-Dec
2025:356:23:24:14Maneuver to 105.60000 14.20000 53.846 [2025:356:23:48:27] 1d 01:06 6:24 PM Mon 22-Dec
2025:356:23:52:57ER Obsid: 41855 (3 ksec) Purpose: Perigee Attitude 1d 01:34 6:52 PM Mon 22-Dec
2025:357:02:34:27Maneuver to 213.49913 -37.48984 88.698 [2025:357:03:10:30] 1d 04:16 9:34 PM Mon 22-Dec
2025:357:03:15:00ER Obsid: 41854 (3 ksec) Purpose: Perigee Attitude 1d 04:5710:15 PM Mon 22-Dec
2025:357:07:39:43Maneuver to 94.26936 22.33132 65.717 [2025:357:08:18:46] 1d 09:21 2:39 AM Tue 23-Dec
2025:357:07:40:17Grating: NONE 1d 09:22 2:40 AM Tue 23-Dec
2025:357:08:05:24RADMON Enable 1d 09:47 3:05 AM Tue 23-Dec
2025:357:08:23:16Obsid: 31141 SI: ACIS-S (10 ksec) Target: IC 443 1d 10:05 3:23 AM Tue 23-Dec
2025:357:10:45:00Comm pass on DSS-26 (duration 1:00) 1d 12:27 5:45 AM Tue 23-Dec
2025:357:11:06:56Load DEC2225A:CL357:1101 [2025:358:22:21:30] 1d 12:48 6:06 AM Tue 23-Dec
2025:357:11:06:56Load DEC2225A:CL357:1101 [2025:358:22:21:30] 1d 12:48 6:06 AM Tue 23-Dec
2025:357:11:09:56Maneuver to 220.60218 -17.28077 73.690 [2025:357:11:49:52] 1d 12:51 6:09 AM Tue 23-Dec
2025:357:11:54:22Obsid: 30192 SI: ACIS-S (14 ksec) Target: NGC5728 1d 13:36 6:54 AM Tue 23-Dec
2025:357:15:51:52Maneuver to 94.26737 22.32886 61.985 [2025:357:16:31:52] 1d 17:3310:51 AM Tue 23-Dec
2025:357:16:05:00Comm pass on DSS-65 (duration 1:00) 1d 17:4711:05 AM Tue 23-Dec
2025:357:16:36:22Obsid: 32072 SI: ACIS-S (10 ksec) Target: IC 443 1d 18:1811:36 AM Tue 23-Dec
2025:357:19:23:02Maneuver to 220.60254 -17.28317 73.655 [2025:357:20:03:03] 1d 21:05 2:23 PM Tue 23-Dec
2025:357:20:07:33Obsid: 32070 SI: ACIS-S (14 ksec) Target: NGC5728 1d 21:49 3:07 PM Tue 23-Dec
2025:358:00:05:03Maneuver to 94.26470 22.32703 57.576 [2025:358:00:45:09] 2d 01:47 7:05 PM Tue 23-Dec
2025:358:00:49:39Obsid: 32073 SI: ACIS-S (10 ksec) Target: IC 443 2d 02:31 7:49 PM Tue 23-Dec
2025:358:03:36:19Maneuver to 220.60284 -17.28510 73.633 [2025:358:04:16:25] 2d 05:1810:36 PM Tue 23-Dec
2025:358:03:45:00Comm pass on DSS-54 (duration 1:00) 2d 05:2710:45 PM Tue 23-Dec
2025:358:04:20:55Obsid: 30200 SI: ACIS-S (15 ksec) Target: NGC5728 2d 06:0211:20 PM Tue 23-Dec
2025:358:08:37:35Maneuver to 98.77727 22.50181 79.100 [2025:358:09:16:27] 2d 10:19 3:37 AM Wed 24-Dec
2025:358:09:20:57Obsid: 32061 SI: ACIS-I (10 ksec) Target: CIZA J0635.0+22 2d 11:02 4:20 AM Wed 24-Dec
2025:358:12:07:37Maneuver to 188.61968 2.17676 54.000 [2025:358:12:38:24] 2d 13:49 7:07 AM Wed 24-Dec
2025:358:12:15:00Comm pass on DSS-65 (duration 1:00) 2d 13:57 7:15 AM Wed 24-Dec
2025:358:12:42:54Obsid: 29657 SI: ACIS-S (33 ksec) Target: NGC4536 2d 14:24 7:42 AM Wed 24-Dec
2025:358:21:52:54Maneuver to 166.11569 38.15910 80.565 [2025:358:22:13:58] 2d 23:34 4:52 PM Wed 24-Dec
2025:358:21:56:28Grating: LETG 2d 23:38 4:56 PM Wed 24-Dec

CXO and GOES rates
CXOGOESLimit
HRC shield016250
HRC MCP637430
P4GM---0.04300
P41GM---0.018.47
CXO: from snapshot at 2025:355:18:20:27 (- 3:57)
GOES proxies: scaled 15 min average of GOES-16
Last avgs at HRC: - 0:18   P4GM: - 0:18   P41GM: - 0:20
ACE rates
Value2hr limitOrbital limitHours to
Orbital limit
Current flux2395000012000> 30
2hr avg flux1405000012000> 30
Orbital fluence9.3x105---2.0x109---
ACE data from 2025:355:22:05:00 (- 0:13)
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 20/2100Z to 21/2100Z: The geomagnetic field has been at unsettled to minor storm levels for the past 24 hours. Solar wind speed reached a peak of 723 km/s at 21/2028Z. Total IMF reached 15 nT at 21/1128Z. The maximum southward component of Bz reached -11 nT at 21/0544Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 2257 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at unsettled to minor storm levels on day one (22 Dec), quiet to minor storm levels on day two (23 Dec) and unsettled to active levels on day three (24 Dec).
Solar ActivityAnalysis of Solar Active Regions and Activity from 20/2100Z to 21/2100Z: Solar activity has been at moderate levels for the past 24 hours. There are currently 5 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 (22 Dec, 23 Dec, 24 Dec).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor