Short-term Schedule

Every week an observing request (OR) list is generated from the long term schedule (LTS) target list for that week, plus some unconstrained (pool) targets. This OR list is over-subscribed to allow an efficient schedule to be generated. The short-term schedule consists of those targets from the OR which will actually be observed; those targets not scheduled are then returned to the pool to be selected for future weeks.

The short-term schedule is the plan for a week's observing time. If there are no interruptions, all observations will be carried out close to the times listed. However, schedules can be interrupted by TOO observations, by solar-flare particle events, and by operational difficulties. This schedule is not a guarantee that the observation will occur when indicated.

NB: RA and DEC listings are for the star tracker, not the target position!

The RA and DEC on the short term pages are derived from the spacecraft quaternion. So the coordinates are that of the aspect camera, not the HRMA. The offset between the two coordinate systems is roughly 1.5 arcminutes in both y and z.

There is a link to previous weeks' short-term schedules at the bottom of this page.

MAR2625A

Seq # NB ObsID Constr. Target Start Time SI Grat RA Dec Roll Pitch Slew Overlays ------ --- ----- ------- -------------------- --------------------- ----- ------ ---- -------- -------- ------ ------ ------ ------------- 901885 P1 29911 0 IGR J16580-3247 2025:085:07:18:00.164 5.0 ACIS-I NONE 254.5307 -32.8175 80.38 108.39 54.17 dss pspc rass 503517 30460 2 SNR 1987A 2025:085:09:25:21.164 14.5 HRC-S LETG 83.8510 -69.2498 258.63 88.07 78.63 dss pspc rass 503503 30867 1 GW170817 2025:085:14:00:37.173 20.0 ACIS-S NONE 197.4339 -23.4008 30.71 155.85 81.45 dss pspc rass 402587 30530 0 4U 1626-67 2025:085:20:01:28.799 30.0 ACIS-S HETG 248.0655 -67.4860 65.12 102.42 54.12 dss pspc rass ---- 42540 CAL-ER (IAT01) 2025:086:04:46:48.425 0.0 -- -- 172.5465 -29.2074 332.05 150.43 64.47 705360 CCT 30863 0 SDSSJ115741.94-03210 2025:086:05:16:33.865 15.0 ACIS-S NONE 179.4138 -3.3310 276.88 173.42 62.58 dss pspc rass 201647 30648 1 HD 284785 2025:086:10:10:34.865 8.0 HRC-I NONE 71.7757 20.8984 276.55 66.34 109.54 dss pspc rass 601638 30782 0 NGC2090 2025:086:12:52:31.645 13.0 ACIS-S NONE 86.7469 -34.2513 262.43 83.67 59.01 dss pspc rass 503497 30106 1 PSR J1101-6101 2025:086:16:57:07.251 15.0 ACIS-I NONE 165.4111 -61.0342 335.72 119.55 55.92 dss pspc rass 402600 DDT 30871 1 EP J120944.2+585060 2025:086:21:59:31.825 11.0 HRC-I NONE 182.4654 58.8579 184.67 118.24 166.09 dss pspc rass 802219 P1 30037 0 ACT-CL J1311.4+1842 2025:087:01:29:02.745 10.8 ACIS-S NONE 197.8511 18.7124 150.00 155.79 48.01 dss pspc rass ---- 42539 CAL-ER (CAL01) 2025:087:04:53:46.381 0.9 -- -- 185.4855 5.8238 188.75 171.14 40.05 ---- 42538 CAL-ER (CAL01) 2025:087:05:45:15.248 7.0 -- -- 178.8558 -4.3310 279.54 171.89 91.34 ---- 42537 CAL-ER (CAL01) 2025:087:08:17:40.584 3.0 -- -- 87.7800 -40.4390 261.75 85.00 91.15 ---- 42536 CAL-ER (CAL01) 2025:087:12:30:00.000 0.9 -- -- 178.8558 -4.3314 278.53 171.68 91.39 ---- 42535 CAL-ER (PER06) 2025:087:13:30:19.909 0.9 -- -- 190.2616 -5.6591 50.44 175.94 131.17 402508 28836 0 4U 1626-67 2025:087:15:28:01.183 29.0 ACIS-S HETG 248.0645 -67.4855 63.83 103.66 77.56 dss pspc rass 901856 28729 0 [JDW2009] G359.55+0. 2025:088:00:02:06.347 28.5 ACIS-I NONE 265.9946 -29.2455 87.15 101.66 40.70 dss pspc rass ---- 42534 CAL-ER (CAL01) 2025:088:08:22:50.223 0.0 -- -- 223.6302 13.1105 112.43 140.88 66.29 601587 28760 0 NGC4261 2025:088:09:02:36.223 13.2 HRC-I NONE 184.8583 5.8368 198.40 170.31 86.91 dss pspc rass 201839 CCT 30866 0 Gaia DR2 16877479864 2025:088:13:24:16.984 14.6 ACIS-S NONE 59.1205 31.9739 289.94 55.66 117.81 dss pspc rass 802154 28854 0 A1550 2025:088:18:03:09.087 27.3 ACIS-I NONE 187.2505 47.6407 178.99 128.84 87.91 dss pspc rass 201838 CCT 30865 0 2MASS J18352154-3123 2025:089:02:21:23.706 5.0 ACIS-S NONE 278.8508 -31.4164 93.26 91.67 124.85 dss pspc rass 503497 30109 1 PSR J1101-6101 2025:089:04:16:47.247 25.0 ACIS-I NONE 165.4168 -61.0349 339.98 120.02 74.52 dss pspc rass 601715 CCT 30864 0 UGC 06850 2025:089:11:52:24.077 11.0 ACIS-I NONE 178.1483 -2.4559 256.00 169.15 105.51 dss pspc rass 705361 CCT 30872 0 B2.3 0408+34A 2025:089:15:36:17.985 16.8 ACIS-S NONE 62.8981 34.7787 289.19 58.52 112.79 dss pspc rass ---- 42533 CAL-ER (PER07) 2025:089:20:57:17.091 0.9 -- -- 185.4855 5.8238 201.12 169.50 113.83

MAR2325A

Seq # NB ObsID Constr. Target Start Time SI Grat RA Dec Roll Pitch Slew Overlays ------ --- ----- ------- -------------------- --------------------- ----- ------ ---- -------- -------- ------ ------ ------ ------------- ---- 42544 CAL-ER (CAL01) 2025:082:03:00:00.000 0.9 -- -- 105.9971 -40.9146 278.43 101.02 75.33 ---- 42543 CAL-ER (CAL01) 2025:082:06:30:00.000 0.9 -- -- 74.3120 -5.0135 267.34 72.16 45.80 ---- 42542 CAL-ER (PER08) 2025:082:07:36:34.870 0.9 -- -- 287.3000 -14.4000 94.80 75.80 159.29 503528 TOO 29813 2 GRB250314A 2025:082:08:38:07.151 20.0 ACIS-S NONE 201.3039 -5.3036 77.85 160.65 84.82 dss pspc rass 705267 P1 29979 0 LEDA 1173286 2025:082:14:51:40.309 13.8 ACIS-S NONE 312.5121 0.6839 89.00 50.14 111.24 dss pspc rass ---- 42541 CAL-ER (IAT03) 2025:082:19:02:58.891 0.0 -- -- 282.8611 35.7754 85.05 81.18 46.60 601605 28111 0 NGC4248 2025:082:19:34:44.740 13.3 ACIS-I NONE 184.4788 47.4199 178.98 131.37 71.61 dss pspc rass 503501 28357 2 PSR J1813-1749 2025:082:23:57:53.068 20.0 ACIS-S NONE 273.4042 -17.8551 87.00 90.01 113.80 dss pspc rass 705017 28652 0 NGC 4579 2025:083:06:09:57.809 16.0 ACIS-S HETG 189.4542 11.8125 145.00 165.46 104.61 dss pspc rass 402588 30534 0 Cygnus X-2 2025:083:11:17:49.277 15.0 ACIS-S HETG 326.1614 38.2990 49.51 50.23 115.61 dss pspc rass 705017 30868 0 NGC 4579 2025:083:16:09:05.445 15.0 ACIS-S HETG 189.4570 11.8170 156.19 165.46 115.96 dss pspc rass 402588 30869 0 Cygnus X-2 2025:083:21:00:21.632 15.0 ACIS-S HETG 326.1606 38.2966 49.51 50.33 115.96 dss pspc rass 705093 28284 0 SDSS J133610.96+1845 2025:084:01:48:27.814 16.0 ACIS-S NONE 204.0684 18.7419 120.99 151.60 101.71 dss pspc rass 201663 28740 0 LHS 475 2025:084:07:01:18.701 14.5 HRC-I NONE 290.3170 -82.5772 92.08 89.71 138.07 dss pspc rass 402551 P1 29769 0 1eRASS J143018.7-074 2025:084:11:39:35.496 6.0 ACIS-S NONE 217.5842 -7.7858 81.59 146.39 95.01 dss pspc rass ---- 42540 CAL-ER (PER02) 2025:084:13:40:42.209 3.0 -- -- 194.4310 -1.4365 92.81 169.99 27.23 ---- 42539 CAL-ER (PER04) 2025:084:16:00:00.000 0.9 -- -- 181.6000 -6.3000 326.20 174.77 126.16 ---- 42538 CAL-ER (PER03) 2025:084:16:51:02.263 3.0 -- -- 87.8720 -41.7120 264.09 86.34 89.34 ---- 42537 CAL-ER (PER05) 2025:084:22:00:00.000 0.9 -- -- 282.7571 -59.1141 97.94 87.64 78.57 503503 28359 1 GW170817 2025:085:00:31:31.147 30.0 ACIS-S NONE 197.4336 -23.4019 31.62 155.42 67.72 dss pspc rass 503517 30460 2 SNR 1987A 2025:085:09:35:32.147 14.5 HRC-S LETG 83.8507 -69.2494 258.62 88.07 81.76 dss pspc rass 503503 30867 1 GW170817 2025:085:14:10:48.130 20.0 ACIS-S NONE 197.4334 -23.4015 30.70 155.86 81.45 dss pspc rass 402587 30530 0 4U 1626-67 2025:085:20:11:39.748 30.0 ACIS-S HETG 248.0655 -67.4868 65.12 102.42 54.12 dss pspc rass ---- 42536 CAL-ER (IAT01) 2025:086:04:56:59.418 0.0 -- -- 172.5465 -29.2074 332.03 150.43 64.48 705360 CCT 30863 0 SDSSJ115741.94-03210 2025:086:05:26:45.131 15.0 ACIS-S NONE 179.4135 -3.3304 276.85 173.41 62.60 dss pspc rass 201647 30648 1 HD 284785 2025:086:10:20:46.131 8.0 HRC-I NONE 71.7753 20.8989 276.55 66.34 109.54 dss pspc rass 601638 30782 0 NGC2090 2025:086:13:02:42.932 13.0 ACIS-S NONE 86.7467 -34.2508 262.42 83.67 59.01 dss pspc rass 503497 30106 1 PSR J1101-6101 2025:086:17:07:18.541 28.8 ACIS-I NONE 165.4110 -61.0342 335.71 119.55 55.92 dss pspc rass 601715 CCT 30864 0 UGC 06850 2025:087:01:42:35.347 10.0 ACIS-I NONE 178.1444 -2.4562 270.00 171.43 91.71 dss pspc rass ---- 42535 CAL-ER (CAL01) 2025:087:05:05:20.594 3.0 -- -- 87.7800 -40.4390 261.87 85.04 93.81 ---- 42534 CAL-ER (CAL01) 2025:087:06:31:06.687 3.0 -- -- 178.8558 -4.3314 279.41 171.87 91.21 ---- 42533 CAL-ER (CAL01) 2025:087:07:56:52.454 3.0 -- -- 87.7800 -40.4390 261.76 85.00 91.18 ---- 42532 CAL-ER (CAL01) 2025:087:12:30:00.000 0.9 -- -- 178.8558 -4.3314 278.53 171.68 91.39 ---- 42531 CAL-ER (PER06) 2025:087:13:30:19.909 0.9 -- -- 190.2616 -5.6591 50.44 175.94 131.17 402549 P1 29767 0 1eRASS J140339.9+093 2025:087:15:29:53.183 5.7 ACIS-S NONE 210.9349 9.6482 117.20 153.15 71.67 dss pspc rass 503504 28776 0 NGC 4449 2025:087:17:47:18.183 11.7 HRC-I NONE 187.0706 44.1037 182.98 132.77 66.67 dss pspc rass ---- 42530 CAL-ER (IAT02) 2025:087:21:28:17.201 0.0 -- -- 223.6302 13.1105 111.90 140.57 67.43 402508 28836 0 4U 1626-67 2025:087:22:06:25.808 28.0 ACIS-S HETG 248.0642 -67.4856 63.60 103.84 100.32 dss pspc rass 901856 28729 0 [JDW2009] G359.55+0. 2025:088:06:23:50.972 28.0 ACIS-I NONE 265.9944 -29.2451 87.11 101.92 40.75 dss pspc rass ---- 42529 CAL-ER (CAL01) 2025:088:14:36:16.878 0.0 -- -- 223.6302 13.1105 112.74 141.06 66.44 601587 28760 0 NGC4261 2025:088:15:16:02.878 12.2 HRC-I NONE 184.8577 5.8367 199.55 170.13 87.65 dss pspc rass 201839 CCT 30866 0 Gaia DR2 16877479864 2025:088:19:21:38.329 14.6 ACIS-S NONE 59.1217 31.9740 288.01 55.42 117.41 dss pspc rass 802154 28854 0 A1550 2025:088:23:59:19.512 27.3 ACIS-I NONE 187.2498 47.6405 178.99 128.74 87.84 dss pspc rass 201838 CCT 30865 0 2MASS J18352154-3123 2025:089:08:17:34.258 5.0 ACIS-S NONE 278.8505 -31.4160 93.23 91.91 124.86 dss pspc rass 503497 30109 1 PSR J1101-6101 2025:089:10:14:14.442 18.3 ACIS-I NONE 165.4134 -61.0310 319.98 120.07 80.26 dss pspc rass 503525 P1 29810 0 eRASSU J130821.3+130 2025:089:16:12:06.015 14.7 ACIS-S NONE 197.1092 13.0477 138.00 161.28 165.72 dss pspc rass ---- 42528 CAL-ER (PER07) 2025:089:20:37:42.184 0.9 -- -- 191.2220 2.8850 163.93 172.87 27.67

Last modified: 03/25/25

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