Page content updated: 2026:116:00:49:00 ( 8:49 PM Sat 25-Apr )

Key Snapshot and SOH Values (Δt = - 0:53)
Obsid29867
Format2_NORM
RadMonENAB
CPE StatusNORM
RA152.269
Dec-38.376
Roll277.786
Pitch120.86
Sim Z75623
Sim Focus-467
HETG angle77.59
LETG angle75.71
SCS 107INAC
SCS 128ACT
SCS 129ACT
SCS 130ACT
RadMonENAB
SCS 131ACT
SCS 132ACT
SCS 133ACT
Snapshot from 2026:115:23:55:25 (Δt = - 0:53)

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)
2026:115:14:14:18Maneuver to 196.04583 -5.55119 244.048 [2026:115:14:42:47]-10:3410:14 AM Sat 25-Apr
2026:115:14:47:17Obsid: 32315 SI: ACIS-S (10 ksec) Target: NGC4941 -10:0110:47 AM Sat 25-Apr
2026:115:17:33:57Maneuver to 199.10519 29.11053 195.993 [2026:115:17:57:53]- 7:15 1:33 PM Sat 25-Apr
2026:115:17:37:31Grating: LETG- 7:11 1:37 PM Sat 25-Apr
2026:115:18:16:22Obsid: 29530 SI: HRC-I (2 ksec) Target: HZ43 - 6:32 2:16 PM Sat 25-Apr
2026:115:18:49:42Maneuver to 152.26488 -38.38054 277.783 [2026:115:19:25:42]- 5:59 2:49 PM Sat 25-Apr
2026:115:18:50:30Grating: NONE- 5:58 2:50 PM Sat 25-Apr
2026:115:19:30:12Obsid: 29867 SI: ACIS-S (26 ksec) Target: AM1006-380 - 5:18 3:30 PM Sat 25-Apr
2026:115:23:00:00Comm pass on DSS-56 (duration 1:00)- 1:49 7:00 PM Sat 25-Apr
2026:116:00:49:00--------------- NOW --------------- 0:00 8:49 PM Sat 25-Apr
2026:116:02:00:00Comm pass on DSS-54 (duration 1:00) 1:1110:00 PM Sat 25-Apr
2026:116:02:44:33Maneuver to 205.50000 -13.40000 269.397 [2026:116:03:09:23] 1:5510:44 PM Sat 25-Apr
2026:116:02:48:07Grating: HETG 1:5910:48 PM Sat 25-Apr
2026:116:02:50:11RADMON Disable 2:0110:50 PM Sat 25-Apr
2026:116:03:13:53ER Obsid: 41532 (5 ksec) Purpose: Perigee Attitude 2:2411:13 PM Sat 25-Apr
2026:116:06:19:04Maneuver to 85.54700 -18.28200 242.034 [2026:116:06:55:30] 5:30 2:19 AM Sun 26-Apr
2026:116:07:00:00ER Obsid: 41531 (5 ksec) Purpose: Perigee Attitude 6:11 3:00 AM Sun 26-Apr
2026:116:09:10:45Load APR2026A:CL116:0901 [2026:117:01:19:40] 8:21 5:10 AM Sun 26-Apr
2026:116:09:10:45Load APR2026A:CL116:0901 [2026:117:01:19:40] 8:21 5:10 AM Sun 26-Apr
2026:116:09:59:09Maneuver to 154.80000 -4.10000 256.712 [2026:116:10:25:30] 9:10 5:59 AM Sun 26-Apr
2026:116:10:30:00ER Obsid: 41530 (3 ksec) Purpose: Perigee Attitude 9:41 6:30 AM Sun 26-Apr
2026:116:12:32:34Maneuver to 104.08700 -26.81587 247.000 [2026:116:12:55:30] 11:43 8:32 AM Sun 26-Apr
2026:116:13:00:00ER Obsid: 41529 (3 ksec) Purpose: Perigee Attitude 12:11 9:00 AM Sun 26-Apr
2026:116:14:10:00Comm pass on DSS-56 (duration 1:00) 13:2110:10 AM Sun 26-Apr
2026:116:15:33:03Maneuver to 152.26500 -38.38010 277.006 [2026:116:15:53:21] 14:4411:33 AM Sun 26-Apr
2026:116:15:33:38Grating: NONE 14:4411:33 AM Sun 26-Apr
2026:116:15:35:33RADMON Enable 14:4611:35 AM Sun 26-Apr
2026:116:16:00:48Obsid: 32308 SI: ACIS-S (22 ksec) Target: AM1006-380 15:1112:00 PM Sun 26-Apr
2026:116:22:07:28Maneuver to 202.10650 -31.59174 326.065 [2026:116:22:28:30] 21:18 6:07 PM Sun 26-Apr
2026:116:22:33:00Obsid: 32316 SI: ACIS-I (10 ksec) Target: Abell 3558 SE 21:44 6:33 PM Sun 26-Apr
2026:117:00:15:00Comm pass on DSS-56 (duration 1:00) 23:26 8:15 PM Sun 26-Apr
2026:117:01:16:40Load APR2726A:CL117:0101 [2026:118:11:59:24] 1d 00:27 9:16 PM Sun 26-Apr
2026:117:01:16:40Load APR2726A:CL117:0101 [2026:118:11:59:24] 1d 00:27 9:16 PM Sun 26-Apr
2026:117:01:19:40Maneuver to 17.89498 -38.08300 160.326 [2026:117:01:55:28] 1d 00:30 9:19 PM Sun 26-Apr
2026:117:01:59:58Obsid: 30228 SI: ACIS-S (12 ksec) Target: NGC 424 1d 01:10 9:59 PM Sun 26-Apr
2026:117:05:19:58Maneuver to 220.59292 -17.27660 53.998 [2026:117:05:58:12] 1d 04:30 1:19 AM Mon 27-Apr
2026:117:06:02:42Obsid: 30189 SI: ACIS-S (11 ksec) Target: NGC5728 1d 05:13 2:02 AM Mon 27-Apr
2026:117:09:14:22Maneuver to 17.89833 -38.08426 157.020 [2026:117:09:52:43] 1d 08:25 5:14 AM Mon 27-Apr
2026:117:09:57:13Obsid: 32321 SI: ACIS-S (18 ksec) Target: NGC 424 1d 09:08 5:57 AM Mon 27-Apr
2026:117:11:00:00Comm pass on DSS-26 (duration 1:00) 1d 10:11 7:00 AM Mon 27-Apr
2026:117:14:57:13Maneuver to 220.59277 -17.27989 54.998 [2026:117:15:35:35] 1d 14:0810:57 AM Mon 27-Apr
2026:117:15:40:05Obsid: 30199 SI: ACIS-S (15 ksec) Target: NGC5728 1d 14:5111:40 AM Mon 27-Apr
2026:117:17:45:00Comm pass on DSS-34 (duration 1:00) 1d 16:56 1:45 PM Mon 27-Apr
2026:117:20:05:05Maneuver to 335.87032 -50.28284 122.844 [2026:117:20:36:46] 1d 19:16 4:05 PM Mon 27-Apr
2026:117:20:41:16Obsid: 30046 SI: ACIS-S (22 ksec) Target: SPT-CLJ2223-501 1d 19:52 4:41 PM Mon 27-Apr
2026:118:02:30:00Comm pass on DSS-56 (duration 1:00) 2d 01:4110:30 PM Mon 27-Apr
2026:118:02:56:16Maneuver to 220.59427 -17.28150 58.362 [2026:118:03:28:04] 2d 02:0710:56 PM Mon 27-Apr
2026:118:03:32:34Obsid: 32320 SI: ACIS-S (15 ksec) Target: NGC5728 2d 02:4311:32 PM Mon 27-Apr
2026:118:07:50:54Maneuver to 335.86812 -50.28549 117.027 [2026:118:08:22:56] 2d 07:01 3:50 AM Tue 28-Apr
2026:118:08:27:26Obsid: 32319 SI: ACIS-S (22 ksec) Target: SPT-CLJ2223-501 2d 07:38 4:27 AM Tue 28-Apr
2026:118:10:00:00Comm pass on DSS-26 (duration 1:00) 2d 09:11 6:00 AM Tue 28-Apr
2026:118:14:05:00Comm pass on DSS-24 (duration 0:45) 2d 13:1610:05 AM Tue 28-Apr
2026:118:14:05:00Load APR2726A:CL118:1401 [2026:119:21:00:02] 2d 13:1610:05 AM Tue 28-Apr
2026:118:14:05:00Load APR2726A:CL118:1401 [2026:119:21:00:02] 2d 13:1610:05 AM Tue 28-Apr
2026:118:14:42:26Maneuver to 230.85116 12.69882 134.998 [2026:118:15:20:54] 2d 13:5310:42 AM Tue 28-Apr
2026:118:15:25:24Obsid: 29883 SI: ACIS-S (10 ksec) Target: SDSS J152322.13 2d 14:3611:25 AM Tue 28-Apr
2026:118:18:26:59Maneuver to 215.70000 -11.90000 182.138 [2026:118:18:50:09] 2d 17:37 2:26 PM Tue 28-Apr
2026:118:18:30:33Grating: HETG 2d 17:41 2:30 PM Tue 28-Apr
2026:118:18:32:36RADMON Disable 2d 17:43 2:32 PM Tue 28-Apr
2026:118:18:54:39ER Obsid: 41528 (3 ksec) Purpose: Perigee Attitude 2d 18:05 2:54 PM Tue 28-Apr
2026:118:20:15:34Maneuver to 8.00000 58.00000 37.225 [2026:118:20:55:30] 2d 19:26 4:15 PM Tue 28-Apr
2026:118:21:00:00ER Obsid: 41527 (3 ksec) Purpose: Perigee Attitude 2d 20:11 5:00 PM Tue 28-Apr
2026:118:23:04:42Maneuver to 51.70000 -30.95000 200.801 [2026:118:23:55:30] 2d 22:15 7:04 PM Tue 28-Apr
2026:119:00:00:00ER Obsid: 41526 (3 ksec) Purpose: Perigee Attitude 2d 23:11 8:00 PM Tue 28-Apr

CXO and GOES rates
CXOGOESLimit
HRC shield017250
HRC MCP356930
P4GM---0.16300
P41GM---0.018.47
CXO: from snapshot at 2026:115:23:55:25 (- 0:53)
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 flux4515000012000> 30
2hr avg flux4095000012000> 30
Orbital fluence2.2x107---2.0x109---
ACE data from 2026:116:00:35:00 (- 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 23/2100Z to 24/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 455 km/s at 23/2132Z. Total IMF reached 7 nT at 24/1812Z. The maximum southward component of Bz reached -6 nT at 24/1812Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 5743 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to minor storm levels on days one and two (25 Apr, 26 Apr) and quiet to unsettled levels on day three (27 Apr). Protons have a chance of crossing threshold on day one (25 Apr), are expected to cross threshold on day two (26 Apr) and have a slight chance of crossing threshold on day three (27 Apr).
Solar ActivityAnalysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity has been at high levels for the past 24 hours. There are currently 7 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be moderate with a chance for X-class flares on days one and two (25 Apr, 26 Apr) and likely to be moderate with a slight chance for an X-class flare on day three (27 Apr).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor