Page content updated: 2026:246:21:59:00 ( 5:59 PM Thu 03-Sep )

Key Snapshot and SOH Values (from current comm)
Obsid30427
Format2_SSR
RadMonENAB
CPE StatusNORM
RA258.187
Dec64.073
Roll256.018
Pitch85.49
Sim Z92903
Sim Focus-535
HETG angle77.59
LETG angle75.71
SCS 107INAC
SCS 128INAC
SCS 129ACT
SCS 130ACT
RadMonENAB
SCS 131INAC
SCS 132ACT
SCS 133ACT
Snapshot from 2026:246:21:57:42 (from current comm)

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)
2026:246:10:00:00Comm pass on DSS-53 (duration 1:00)-11:59 6:00 AM Thu 03-Sep
2026:246:10:38:35Maneuver to 337.40162 -8.52491 281.395 [2026:246:11:14:39]-11:20 6:38 AM Thu 03-Sep
2026:246:11:19:09Obsid: 32519 SI: ACIS-S (10 ksec) Target: PKS2227-088 -10:39 7:19 AM Thu 03-Sep
2026:246:14:05:49Maneuver to 220.59777 -17.22423 251.737 [2026:246:14:41:52]- 7:5310:05 AM Thu 03-Sep
2026:246:14:46:22Obsid: 32528 SI: ACIS-S (10 ksec) Target: NGC5728 - 7:1210:46 AM Thu 03-Sep
2026:246:17:33:02Maneuver to 258.19002 64.07389 256.017 [2026:246:18:03:50]- 4:25 1:33 PM Thu 03-Sep
2026:246:18:08:20Obsid: 30427 SI: ACIS-I (22 ksec) Target: Abell 2255 - 3:50 2:08 PM Thu 03-Sep
2026:246:21:45:00Comm pass on DSS-56 (duration 1:00)- 0:14 5:45 PM Thu 03-Sep
2026:246:21:59:00--------------- NOW --------------- 0:00 5:59 PM Thu 03-Sep
2026:247:00:15:00Maneuver to 352.22091 5.25122 160.498 [2026:247:00:45:59] 2:16 8:15 PM Thu 03-Sep
2026:247:00:57:25Obsid: 32531 SI: HRC-I (9 ksec) Target: G29-38 2:58 8:57 PM Thu 03-Sep
2026:247:03:00:00Comm pass on DSS-23 (duration 1:00) 5:0111:00 PM Thu 03-Sep
2026:247:03:35:45Maneuver to 339.53914 53.25068 183.594 [2026:247:03:58:12] 5:3611:35 PM Thu 03-Sep
2026:247:04:02:42Obsid: 32460 SI: ACIS-S (19 ksec) Target: EP J223759.5+53 6:0312:02 AM Fri 04-Sep
2026:247:09:19:22Maneuver to 48.04170 50.46894 114.046 [2026:247:09:39:53] 11:20 5:19 AM Fri 04-Sep
2026:247:09:44:23Obsid: 32518 SI: ACIS-S (10 ksec) Target: 2MASXJ03120291+ 11:45 5:44 AM Fri 04-Sep
2026:247:12:31:03Maneuver to 352.21874 5.24496 143.440 [2026:247:12:56:27] 14:32 8:31 AM Fri 04-Sep
2026:247:12:35:00Comm pass on DSS-53 (duration 1:00) 14:36 8:35 AM Fri 04-Sep
2026:247:13:13:28Obsid: 30449 SI: HRC-I (7 ksec) Target: G29-38 15:14 9:13 AM Fri 04-Sep
2026:247:15:15:28Load AUG3126A:CL247:1501 [2026:249:02:56:45] 17:1611:15 AM Fri 04-Sep
2026:247:15:15:28Load AUG3126A:CL247:1501 [2026:249:02:56:45] 17:1611:15 AM Fri 04-Sep
2026:247:15:18:28Maneuver to 69.13513 23.31888 98.119 [2026:247:15:46:59] 17:1911:18 AM Fri 04-Sep
2026:247:15:51:29Obsid: 32522 SI: ACIS-S (27 ksec) Target: V* V1116 Tau 17:5211:51 AM Fri 04-Sep
2026:247:19:00:00Comm pass on DSS-56 (duration 1:00) 21:01 3:00 PM Fri 04-Sep
2026:247:23:21:29Maneuver to 352.21711 5.24559 144.353 [2026:247:23:50:03] 1d 01:22 7:21 PM Fri 04-Sep
2026:248:00:03:54Obsid: 32532 SI: HRC-I (7 ksec) Target: G29-38 1d 02:04 8:03 PM Fri 04-Sep
2026:248:01:45:00Comm pass on DSS-23 (duration 1:00) 1d 03:46 9:45 PM Fri 04-Sep
2026:248:02:08:54Maneuver to 6.94897 -32.57878 45.421 [2026:248:02:43:56] 1d 04:0910:08 PM Fri 04-Sep
2026:248:02:48:26Obsid: 32521 SI: ACIS-S (5 ksec) Target: GJ 2006 B 1d 04:4910:48 PM Fri 04-Sep
2026:248:04:11:46Maneuver to 153.89679 -57.27237 163.990 [2026:248:04:42:09] 1d 06:1212:11 AM Sat 05-Sep
2026:248:04:46:39Obsid: 29815 SI: ACIS-I (12 ksec) Target: PSR J1015-5719 1d 06:4712:46 AM Sat 05-Sep
2026:248:08:17:20Maneuver to 346.94000 -10.92000 37.802 [2026:248:08:53:41] 1d 10:18 4:17 AM Sat 05-Sep
2026:248:08:20:54Grating: HETG 1d 10:21 4:20 AM Sat 05-Sep
2026:248:08:23:20RADMON Disable 1d 10:24 4:23 AM Sat 05-Sep
2026:248:08:58:11ER Obsid: 41172 (3 ksec) Purpose: Perigee Attitude 1d 10:59 4:58 AM Sat 05-Sep
2026:248:11:23:20Maneuver to 345.60000 -5.30000 132.726 [2026:248:11:55:30] 1d 13:24 7:23 AM Sat 05-Sep
2026:248:12:00:00ER Obsid: 41171 (3 ksec) Purpose: Perigee Attitude 1d 14:01 8:00 AM Sat 05-Sep
2026:248:12:00:00Comm pass on DSS-36 (duration 1:00) 1d 14:01 8:00 AM Sat 05-Sep
2026:248:13:32:39Maneuver to 108.00000 30.00000 78.009 [2026:248:14:10:30] 1d 15:33 9:32 AM Sat 05-Sep
2026:248:14:15:00ER Obsid: 41170 (3 ksec) Purpose: Perigee Attitude 1d 16:1610:15 AM Sat 05-Sep
2026:248:15:52:31Maneuver to 2.75000 8.30000 128.512 [2026:248:16:25:30] 1d 17:5311:52 AM Sat 05-Sep
2026:248:16:30:00ER Obsid: 41169 (2 ksec) Purpose: Perigee Attitude 1d 18:3112:30 PM Sat 05-Sep
2026:248:17:35:26Maneuver to 122.00000 35.00000 63.950 [2026:248:18:10:30] 1d 19:36 1:35 PM Sat 05-Sep
2026:248:18:15:00ER Obsid: 41168 (1 ksec) Purpose: Perigee Attitude 1d 20:16 2:15 PM Sat 05-Sep
2026:248:18:46:31Maneuver to 158.00000 -41.00000 171.680 [2026:248:19:25:30] 1d 20:47 2:46 PM Sat 05-Sep
2026:248:19:30:00ER Obsid: 41167 (1 ksec) Purpose: Perigee Attitude 1d 21:31 3:30 PM Sat 05-Sep
2026:248:20:01:05Maneuver to 344.90000 -10.76000 8.816 [2026:248:20:40:30] 1d 22:02 4:01 PM Sat 05-Sep
2026:248:20:45:00ER Obsid: 41166 (2 ksec) Purpose: Perigee Attitude 1d 22:46 4:45 PM Sat 05-Sep
2026:248:22:07:31Maneuver to 153.89769 -57.27198 168.497 [2026:248:22:43:16] 2d 00:08 6:07 PM Sat 05-Sep
2026:248:22:08:05Grating: NONE 2d 00:09 6:08 PM Sat 05-Sep
2026:248:22:24:39RADMON Enable 2d 00:25 6:24 PM Sat 05-Sep
2026:248:22:47:46Obsid: 32524 SI: ACIS-I (13 ksec) Target: PSR J1015-5719 2d 00:48 6:47 PM Sat 05-Sep
2026:249:01:25:00Comm pass on DSS-24 (duration 1:00) 2d 03:26 9:25 PM Sat 05-Sep
2026:249:02:24:26Maneuver to 357.90582 -26.10519 35.581 [2026:249:02:56:31] 2d 04:2510:24 PM Sat 05-Sep
2026:249:03:01:01Obsid: 30513 SI: ACIS-I (10 ksec) Target: Abell 2667 2d 05:0211:01 PM Sat 05-Sep
2026:249:03:17:16Load AUG3126A:CL249:0301 [2026:250:02:17:54] 2d 05:1811:17 PM Sat 05-Sep
2026:249:03:17:16Load AUG3126A:CL249:0301 [2026:250:02:17:54] 2d 05:1811:17 PM Sat 05-Sep
2026:249:05:47:41Maneuver to 153.89861 -57.27190 168.187 [2026:249:06:19:46] 2d 07:48 1:47 AM Sun 06-Sep
2026:249:06:24:16Obsid: 32525 SI: ACIS-I (10 ksec) Target: PSR J1015-5719 2d 08:25 2:24 AM Sun 06-Sep
2026:249:09:10:56Maneuver to 357.90558 -26.10506 34.913 [2026:249:09:43:01] 2d 11:11 5:10 AM Sun 06-Sep
2026:249:09:47:31Obsid: 32533 SI: ACIS-I (10 ksec) Target: Abell 2667 2d 11:48 5:47 AM Sun 06-Sep
2026:249:11:25:00Comm pass on DSS-53 (duration 1:00) 2d 13:26 7:25 AM Sun 06-Sep
2026:249:12:34:11Maneuver to 153.90802 -57.27165 162.000 [2026:249:13:06:26] 2d 14:35 8:34 AM Sun 06-Sep
2026:249:13:10:56Obsid: 32526 SI: ACIS-I (12 ksec) Target: PSR J1015-5719 2d 15:11 9:10 AM Sun 06-Sep
2026:249:16:30:56Maneuver to 357.90542 -26.10475 34.187 [2026:249:17:03:09] 2d 18:3112:30 PM Sun 06-Sep
2026:249:17:07:39Obsid: 32534 SI: ACIS-I (10 ksec) Target: Abell 2667 2d 19:08 1:07 PM Sun 06-Sep
2026:249:18:25:00Comm pass on DSS-53 (duration 1:00) 2d 20:26 2:25 PM Sun 06-Sep
2026:249:19:54:19Maneuver to 70.90794 -8.82210 92.002 [2026:249:20:22:27] 2d 21:55 3:54 PM Sun 06-Sep
2026:249:20:26:57Obsid: 32523 SI: ACIS-S (10 ksec) Target: 2RXS J044334.6- 2d 22:27 4:26 PM Sun 06-Sep

CXO and GOES rates
CXOGOESLimit
HRC shield016250
HRC MCP637430
P4GM---0.05300
P41GM---0.008.47
CXO: from snapshot at 2026:246:21:57:42 (- 0:01)
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 flux28.75000012000> 30
2hr avg flux27.35000012000> 30
Orbital fluence1.4x106---2.0x109---
ACE data from 2026:246:17:45:00 (- 4:14)
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 01/2100Z to 02/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 405 km/s at 02/1052 UTC. Total IMF reached 6 nT at 02/1839 UTC. The maximum southward component of Bz reached 4 nT at 02/0227 UTC. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 2,371 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (03 Sep, 04 Sep, 05 Sep).
Solar ActivityAnalysis of Solar Active Regions and Activity from 01/2100Z to 02/2100Z: Solar activity has been at low 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 low with a slight chance for an M-class flare on days one, two, and three (03 Sep, 04 Sep, 05 Sep).

Solar X-ray Activity

Solar Wind Data ( SOHO ACE )

Solar Flare Monitor