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.

MAR0821A

Seq # ObsID Constr. Target Start Time SI Grat RA Dec Roll Pitch Slew ---------------------------------------------------------------------------------------------------------------------------- ---- 46513 CAL-ER (PER01) 2021:067:13:02:52.102 3.0 -- -- 329.3000 -49.4000 153.14 47.58 78.16 ---- 46512 CAL-ER (PER04) 2021:067:16:00:00.000 3.0 -- -- 174.0000 -4.0000 29.93 169.93 122.64 ---- 46511 CAL-ER (PER02) 2021:067:18:00:00.000 3.0 -- -- 159.0000 4.0000 274.39 169.94 116.33 ---- 46510 CAL-ER (CTI04) 2021:067:20:27:07.859 2.0 -- -- 37.7000 1.1000 277.18 48.83 121.22 704262 P1 24721 0 J090203.91+061849.6 2021:067:22:08:20.854 3.6 ACIS-S NONE 135.5054 6.3377 268.86 146.39 97.63 dss pspc rass 201369 23382 2 TW Hya 2021:067:23:43:45.859 28.0 HRC-S LETG 165.4400 -34.7139 353.94 140.50 89.63 dss pspc rass 503251 24274 0 SNR 0519-69.0 2021:068:07:58:33.011 25.0 ACIS-S NONE 79.8644 -69.0114 271.84 85.88 56.79 dss pspc rass 201370 23383 2 TW Hya 2021:068:15:23:18.702 28.0 HRC-S LETG 165.4434 -34.7125 352.96 140.67 56.68 dss pspc rass 201401 P1 23414 0 2MASS J20320890-4742 2021:068:23:45:46.010 10.0 ACIS-S NONE 308.0662 -47.7121 126.58 56.48 91.30 dss pspc rass 201448 24985 0 CD-29 8887 2021:069:03:09:03.978 5.0 ACIS-S NONE 167.2832 -30.0354 354.56 145.63 95.10 dss pspc rass 590601 24581 2 E0102-72.3 2021:069:05:04:56.216 32.5 ACIS-I NONE 15.6854 -72.0395 197.69 69.67 76.67 dss pspc rass 201371 23384 2 TW Hya 2021:069:14:38:02.079 28.6 HRC-S LETG 165.4463 -34.7113 351.53 140.95 71.69 dss pspc rass 704257 P1 24716 0 J110632.29+292314.4 2021:069:23:25:42.978 6.0 ACIS-S NONE 166.6518 29.4008 195.99 154.11 159.37 dss pspc rass ---- 46509 CAL-ER (CTI01) 2021:070:01:24:36.842 2.0 -- -- 170.0000 10.0000 190.80 173.72 20.06 ---- 46508 CAL-ER (PER05) 2021:070:03:00:00.000 2.0 -- -- 175.3200 -2.4500 42.70 172.54 147.98 ---- 46507 CAL-ER (CAL01) 2021:070:04:30:00.000 3.0 -- -- 314.0000 -39.0000 126.58 48.83 123.86 ---- 46506 CAL-ER (CAL01) 2021:070:07:30:00.000 2.0 -- -- 174.3000 -2.6000 24.60 173.07 124.58 ---- 46505 CAL-ER (PER06) 2021:070:09:00:00.000 2.0 -- -- 180.0000 4.0000 91.90 171.50 67.86 ---- 46504 CAL-ER (PER07) 2021:070:11:00:00.000 2.0 -- -- 302.0000 7.0000 79.41 50.61 121.20 ---- 46503 CAL-ER (PER03) 2021:070:11:50:00.794 1.0 -- -- 302.0000 7.0000 79.44 50.64 0.02 704215 23803 0 SDSS J1138+0314 2021:070:13:01:56.794 15.0 ACIS-S NONE 174.5294 3.2305 100.50 177.10 126.58 dss pspc rass 601449 24826 0 H1821+643 2021:070:17:51:47.909 36.0 HRC-S LETG 275.5148 64.3249 92.48 87.34 109.58 dss pspc rass 704215 24983 0 SDSS J1138+0314 2021:071:04:31:14.093 15.0 ACIS-S NONE 174.5305 3.2317 104.50 177.73 107.71 dss pspc rass 601449 22469 0 H1821+643 2021:071:09:20:40.277 31.0 HRC-S LETG 275.5138 64.3257 92.48 87.38 107.71 dss pspc rass 201432 P1 24687 0 2RXS J041939.0-12121 2021:071:18:41:51.289 3.0 ACIS-I NONE 64.9026 -12.1869 269.35 71.85 130.58 dss pspc rass 704170 23758 0 SDSS J110202.68-0007 2021:071:20:09:43.619 26.9 ACIS-S NONE 165.4937 -0.1167 293.95 171.96 100.67 dss pspc rass 201429 P1 24684 0 HR858 2021:072:04:19:42.250 2.0 ACIS-S NONE 42.9819 -30.7909 249.54 54.53 117.65 dss pspc rass 601449 24984 0 H1821+643 2021:072:05:42:45.810 41.1 HRC-S LETG 275.5059 64.3240 81.98 87.40 154.02 dss pspc rass ---- 46502 CAL-ER (CTI02) 2021:072:17:42:40.740 3.0 -- -- 176.0000 11.0000 163.95 171.44 84.24 ---- 46501 CAL-ER (CTI03) 2021:072:20:00:00.000 2.0 -- -- 175.0000 -3.0000 12.61 174.14 151.63 ---- 46500 CAL-ER (PER08) 2021:072:23:00:00.000 3.0 -- -- 329.3000 -49.4000 147.83 51.21 123.17 ---- 46499 CAL-ER (PER09) 2021:073:02:00:00.000 3.0 -- -- 174.3000 -2.6000 3.54 174.78 124.16 ---- 46498 CAL-ER (CTI07) 2021:073:03:35:06.843 2.0 -- -- 179.0000 -2.0000 47.22 173.25 43.74 704226 P1 23814 1 ESO234-G050 2021:073:05:04:05.702 20.0 ACIS-S NONE 309.0240 -50.2037 125.97 60.93 113.12 dss pspc rass 201372 23385 2 TW Hya 2021:073:11:12:53.437 28.0 HRC-S LETG 165.4414 -34.7102 345.49 141.88 89.83 dss pspc rass 601470 22493 0 J132751.6+480805.3 2021:073:19:53:13.083 16.0 ACIS-S NONE 201.9993 48.1322 147.97 128.53 171.72 dss pspc rass 503212 24434 0 PSR B2224+65 2021:074:00:49:03.731 30.0 ACIS-I NONE 336.4548 65.5930 11.98 69.16 61.55 dss pspc rass

MAR0121A

Seq # ObsID Constr. Target Start Time SI Grat RA Dec Roll Pitch Slew ---------------------------------------------------------------------------------------------------------------------------- 704291 24973 0 SDSSJ110700.50+02584 2021:060:05:01:40.207 20.0 ACIS-S NONE 166.7385 2.9613 27.00 173.41 112.77 dss pspc rass ---- 46538 CAL-ER (IAT01) 2021:060:10:58:06.416 0.9 -- -- 186.0000 -25.5000 38.03 139.71 34.75 402254 23476 1 M51 2021:060:11:54:20.858 35.0 ACIS-S NONE 202.4540 47.2251 126.20 127.67 112.76 dss pspc rass 704023 23035 0 Mrk 279 2021:060:21:58:27.880 20.0 HRC-S LETG 208.3178 69.3030 134.95 111.44 26.17 dss pspc rass 601446 21649 1 NGC 4472 ULXs 2021:061:04:05:08.250 20.0 ACIS-S NONE 187.4271 7.8914 97.50 155.75 80.28 dss pspc rass 704023 23036 0 Mrk 279 2021:061:10:11:48.625 20.0 HRC-S LETG 208.3151 69.3034 134.95 111.38 80.28 dss pspc rass 704167 P1 23755 0 SDSS J102541.78+2454 2021:061:16:14:16.225 10.0 ACIS-S NONE 156.4411 24.9202 194.99 160.96 56.40 dss pspc rass 704023 24976 0 Mrk 279 2021:061:19:28:58.263 26.0 HRC-S LETG 208.3136 69.3035 134.95 111.33 56.40 dss pspc rass ---- 46537 CAL-ER (CTI01) 2021:062:03:20:34.040 1.0 -- -- 203.8000 -8.6000 69.96 137.26 99.71 ---- 46536 CAL-ER (CTI02) 2021:062:04:00:44.223 3.0 -- -- 170.3000 3.2400 60.12 172.62 36.35 ---- 46535 CAL-ER (PER01) 2021:062:05:30:00.000 1.0 -- -- 167.7850 10.8000 135.58 174.51 75.51 ---- 46534 CAL-ER (PER03) 2021:062:07:15:00.000 1.0 -- -- 228.3000 38.8000 101.20 114.19 60.66 ---- 46533 CAL-ER (PER02) 2021:062:08:35:00.000 3.0 -- -- 167.7850 10.8000 137.03 174.55 60.81 ---- 46532 CAL-ER (PER04) 2021:062:10:08:53.012 1.0 -- -- 322.0000 36.0000 30.45 47.54 127.73 ---- 46531 CAL-ER (PER05) 2021:062:12:20:00.000 1.0 -- -- 339.0000 -55.0000 173.08 48.45 151.61 ---- 46530 CAL-ER (CTI03) 2021:062:13:29:34.551 1.0 -- -- 339.0000 -55.0000 173.01 48.47 0.06 590600 24580 2 E0102-72.3 2021:062:14:44:35.751 28.0 ACIS-I NONE 15.8370 -72.0302 202.84 68.15 23.25 dss pspc rass 201447 24974 0 2RXS J105203.7+00324 2021:062:23:10:17.918 20.0 ACIS-S NONE 162.9927 0.5386 349.00 173.73 105.91 dss pspc rass 801925 24471 0 SPT-CLJ2355-5514 2021:063:05:26:39.417 28.0 ACIS-I NONE 358.8562 -55.2236 193.99 50.00 123.86 dss pspc rass ---- 46529 CAL-ER (IAT03) 2021:063:13:56:19.738 0.9 -- -- 164.5800 0.1000 354.17 173.71 123.77 601500 24440 0 M96 2021:063:14:55:28.044 18.0 ACIS-I NONE 161.6945 11.8407 229.00 173.48 125.80 dss pspc rass ---- 46528 CAL-ER (IAT04) 2021:063:20:37:27.227 0.9 -- -- 20.7000 37.4000 315.32 54.63 119.19 503169 22446 0 3C434.1 2021:063:21:20:05.724 25.0 ACIS-I NONE 321.3957 51.9265 28.02 61.71 51.56 dss pspc rass ---- 46527 CAL-ER (IAT05) 2021:064:04:43:41.685 0.9 -- -- 20.7000 37.4000 315.54 54.35 51.45 601500 24441 0 M96 2021:064:05:41:21.647 17.0 ACIS-I NONE 161.6948 11.8417 229.00 172.97 119.17 dss pspc rass ---- 46526 CAL-ER (IAT06) 2021:064:11:06:40.448 0.9 -- -- 20.7000 37.4000 315.71 54.13 119.16 503169 24975 0 3C434.1 2021:064:11:49:16.242 24.7 ACIS-I NONE 321.3952 51.9262 28.02 61.64 51.36 dss pspc rass ---- 46525 CAL-ER (CTI04) 2021:064:18:58:38.350 3.0 -- -- 322.0000 36.0000 33.62 47.68 17.03 ---- 46524 CAL-ER (PER06) 2021:064:20:31:57.867 2.0 -- -- 170.2864 11.8853 146.97 172.83 125.21 ---- 46523 CAL-ER (PER09) 2021:064:21:35:38.496 1.0 -- -- 162.5000 11.4100 214.95 173.21 66.80 ---- 46522 CAL-ER (PER07) 2021:064:22:30:00.000 3.0 -- -- 100.0000 58.0000 252.72 107.25 66.02 ---- 46521 CAL-ER (PER08) 2021:065:04:10:00.000 1.0 -- -- 160.0000 13.0000 222.74 170.17 64.02 ---- 46520 CAL-ER (CTI05) 2021:065:05:13:28.133 1.0 -- -- 20.7000 37.4000 316.21 53.47 116.84 601500 24442 0 M96 2021:065:06:23:32.134 19.0 ACIS-I NONE 161.6946 11.8409 229.00 172.05 119.12 dss pspc rass ---- 46519 CAL-ER (IAT02) 2021:065:12:22:10.253 0.9 -- -- 20.7000 37.4000 316.44 53.22 119.11 704074 23662 0 SDSS J022429.10-0918 2021:065:13:07:40.280 25.5 ACIS-S NONE 36.1104 -9.2908 269.00 48.75 64.43 dss pspc rass ---- 46518 CAL-ER (IAT07) 2021:065:20:56:14.296 0.9 -- -- 162.0000 3.0000 294.98 174.12 126.30 601500 24979 0 M96 2021:065:21:42:12.520 20.0 ACIS-I NONE 161.6951 11.8426 229.00 171.49 66.54 dss pspc rass ---- 46517 CAL-ER (IAT08) 2021:066:03:45:24.493 0.9 -- -- 162.0000 3.0000 293.06 173.92 64.65 704074 24978 0 SDSS J022429.10-0918 2021:066:04:44:38.086 24.5 ACIS-S NONE 36.1095 -9.2890 269.00 48.19 126.19 dss pspc rass ---- 46516 CAL-ER (IAT09) 2021:066:12:16:29.270 0.9 -- -- 162.0000 3.0000 290.83 173.67 126.09 601500 24980 0 M96 2021:066:13:01:32.721 16.0 ACIS-I NONE 161.6956 11.8443 229.00 170.93 62.43 dss pspc rass ---- 46515 CAL-ER (IAT10) 2021:066:17:55:10.258 0.9 -- -- 168.8300 15.7000 176.30 169.42 51.57 704023 24977 0 Mrk 279 2021:066:18:39:39.619 28.0 HRC-S LETG 208.3347 69.3008 134.93 110.65 59.88 dss pspc rass 901432 P1 23642 0 NuSTAR J191044+0743. 2021:067:02:59:27.200 10.0 ACIS-S NONE 287.6936 7.7037 80.13 61.96 79.32 dss pspc rass 601446 24981 1 NGC 4472 ULXs 2021:067:06:23:37.313 11.6 ACIS-S NONE 187.4298 7.8872 97.50 161.07 99.01 dss pspc rass ---- 46514 CAL-ER (CTI06) 2021:067:10:15:05.335 3.0 -- -- 292.6301 1.3714 83.25 56.41 104.87

Last modified: 03/06/21

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA. Email: cxchelp@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2019. All rights reserved.