The Steward Alerts for Science System (SASSy) provides access to various alerts and cross-correlation with catalogs. We provide support for queries to alerts and database(s) sourced from the Galaxy List for the Advanced Detector Era (GLADE), the Gravitational Wave Galaxy Catalog (GWGC), (ad-hoc) alerts from the Laser Interferometer Gravitational-Wave Observatory (LIGO), the Transient Name Server (TNS) and the Zwicky Transient Facility (ZTF). Further information is available in the (help) and (api) sections.

These pages are adapted from the code from LCOGT (Las Cumbres Observatory Global Telescope) which delivers the MARS (Make Alerts Really Simple) website.


Zwicky Transient Facility (ZTF)

This page provides a default interface to the ZTF. The table lists ZTF records in descending order by jd. Use the filters on the right to narrow down the results to areas of interest. When the results look good, add ?format=json to the URL. You can then access the URL to retrieve the full data and use it in your scripts. You can access an alert's previous alerts by visiting /<sid>/ where sid is the value of the sid key in the JSON view or by clicking the sid link in the table.

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158953681 record(s) found. Showing page 1 / 3179074.
Latest Alert: 2021-09-23 09:02:09 UTC

sid objectId Time Filter RA Dec magpsf magap Dist δmaglatest δmagref rbscore drbscore cla*
UTC {g,i,r} J2k(°) J2k(°) mag mag pxl δmag δmag 0–1 0–1 0–1
161950352 ZTF18aczbhty 2021-09-23 09:02:09 g 29.252 -22.102 18.695 18.756 0.20 0.015 -0.918 0.92 1.00 0.98
161950390 ZTF18acxhtqg 2021-09-23 09:02:09 g 29.452 -27.673 16.008 16.194 0.52 1.209 -2.479 0.64 0.87 1.00
161950391 ZTF19abrocap 2021-09-23 09:02:09 g 29.470 -27.666 18.270 18.074 0.20 0.056 -1.593 0.90 1.00 1.00
161950411 ZTF21acdrhsa 2021-09-23 09:02:09 g 34.634 -23.033 18.400 18.191 3.48 None None 0.84 1.00 0.98
161950432 ZTF19aaayufh 2021-09-23 09:02:09 g 28.113 -23.332 18.167 18.747 0.45 -0.022 -2.168 0.74 1.00 0.99
161950444 ZTF21acdrhsc 2021-09-23 09:02:09 g 28.449 -22.752 17.177 17.791 4.98 None None 0.21 0.00 0.98
161950456 ZTF18acxhtse 2021-09-23 09:02:09 g 33.201 -23.221 16.099 16.068 0.26 -0.554 -1.605 0.88 1.00 0.97
161950457 ZTF18acxhtsj 2021-09-23 09:02:09 g 33.366 -22.737 18.861 18.895 0.04 0.127 -1.041 0.93 1.00 0.94
161950471 ZTF18acxhtrv 2021-09-23 09:02:09 g 32.656 -26.726 17.716 17.567 0.34 0.741 -1.640 0.90 1.00 0.99
161950488 ZTF20aafmdff 2021-09-23 09:02:09 g 34.734 -27.283 18.387 19.029 1.29 None -2.429 0.38 0.20 0.99
161950511 ZTF19ackzulp 2021-09-23 09:02:09 g 30.886 -22.503 16.889 17.082 1.03 -0.005 -2.203 0.71 0.36 1.00
161950512 ZTF18acxhtuj 2021-09-23 09:02:09 g 31.219 -22.850 17.647 17.663 0.28 -0.055 -1.623 0.95 1.00 0.68
161950518 ZTF21acdrhsf 2021-09-23 09:02:09 g 27.154 -21.433 17.905 18.439 5.51 None None 0.32 0.03 1.00
161950520 ZTF21acdrhsg 2021-09-23 09:02:09 g 27.109 -21.967 18.508 18.678 4.46 None None 0.32 0.80 1.00
161950531 ZTF21acdrhsi 2021-09-23 09:02:09 g 28.536 -24.438 17.119 17.545 2.64 None None 0.17 0.00 0.99
161950532 ZTF19aaayswv 2021-09-23 09:02:09 g 27.925 -24.455 18.182 18.928 0.19 -0.004 -2.326 0.70 1.00 0.99
161950535 ZTF18acxhtqb 2021-09-23 09:02:09 g 34.432 -21.427 17.340 17.381 0.21 0.477 -1.878 0.89 1.00 0.99
161950556 ZTF19aaaywkv 2021-09-23 09:02:09 g 28.026 -21.950 17.551 17.809 0.32 -0.289 -2.313 0.83 0.97 0.99
161950558 ZTF21acdrhsn 2021-09-23 09:02:09 g 28.400 -22.061 17.321 17.995 19.45 None None 0.19 0.00 0.98
161950559 ZTF20acbenxp 2021-09-23 09:02:09 g 30.344 -25.613 18.979 19.132 0.20 -0.504 -0.901 0.88 1.00 0.98
161950568 ZTF18acxhtrl 2021-09-23 09:02:09 g 27.450 -27.051 17.381 17.167 0.03 1.070 -1.477 0.86 1.00 1.00
161950569 ZTF21acdrhsp 2021-09-23 09:02:09 g 27.538 -27.003 16.826 17.191 0.87 None 5.346 0.58 0.06 0.98
161950570 ZTF21acdrhso 2021-09-23 09:02:09 g 29.287 -25.881 16.975 17.598 17.05 None None 0.17 0.00 0.94
161950576 ZTF18aczbhrq 2021-09-23 09:02:09 g 30.918 -25.013 14.765 14.790 0.05 -2.086 -1.007 0.86 1.00 1.00
161950577 ZTF21acdrhsq 2021-09-23 09:02:09 g 30.987 -24.581 17.670 17.717 9.40 None None 0.94 1.00 0.98
161950580 ZTF19aadavqz 2021-09-23 09:02:09 g 31.642 -24.469 18.112 18.338 0.27 -1.105 0.342 0.93 1.00 0.98
161950582 ZTF21acdrhss 2021-09-23 09:02:09 g 33.198 -22.088 18.536 18.459 9.06 None None 0.85 1.00 1.00
161950584 ZTF21acdrhst 2021-09-23 09:02:09 g 33.155 -21.738 18.104 18.596 18.72 None None 0.30 0.00 0.98
161950586 ZTF19abtrvur 2021-09-23 09:02:09 g 33.279 -21.774 18.759 18.926 0.28 0.014 -0.886 0.82 1.00 1.00
161950597 ZTF19aacptfy 2021-09-23 09:02:09 g 32.493 -21.075 18.177 18.191 0.38 -0.247 -1.012 0.91 1.00 0.99
161950599 ZTF20aabrdwv 2021-09-23 09:02:09 g 31.869 -21.334 17.752 18.502 0.68 None -2.984 0.31 0.02 1.00
161950607 ZTF21acdrhsw 2021-09-23 09:02:09 g 28.167 -26.755 18.240 18.186 9.59 None None 0.93 1.00 0.98
161950610 ZTF21acdrhsx 2021-09-23 09:02:09 g 30.289 -22.885 18.178 18.634 20.32 None None 0.22 0.00 0.95
161950640 ZTF18acxhtpi 2021-09-23 09:02:09 g 27.344 -23.666 16.466 16.523 0.92 0.171 -1.937 0.53 0.79 1.00
161950642 ZTF19aaayveq 2021-09-23 09:02:09 g 27.409 -23.930 18.749 19.378 1.30 None -2.968 0.58 0.06 0.95
161950647 ZTF21acdrhtk 2021-09-23 09:02:09 g 29.893 -21.627 16.411 16.375 6.06 None None 0.87 1.00 0.99
161950667 ZTF21acdrhtm 2021-09-23 09:02:09 g 28.830 -26.473 17.017 17.460 13.58 None None 0.23 0.00 0.98
161950671 ZTF19aaepgxy 2021-09-23 09:02:09 g 31.889 -24.034 17.550 17.613 0.33 -0.293 2.349 0.95 1.00 0.99
161950673 ZTF18acwbubm 2021-09-23 09:02:09 g 31.949 -23.903 17.758 18.129 0.32 0.152 -2.965 0.71 0.84 1.00
161950679 ZTF18abvetqi 2021-09-23 09:02:09 g 27.073 -20.535 16.502 16.428 0.29 -0.199 -1.795 0.89 1.00 0.68
161950681 ZTF20acqpxob 2021-09-23 09:02:09 g 26.958 -20.811 17.521 17.448 1.21 0.628 -2.959 0.40 0.27 0.98
161950683 ZTF21acdrhtt 2021-09-23 09:02:09 g 27.589 -20.987 17.675 18.303 9.50 None None 0.24 0.00 0.98
161950705 ZTF18adbmiix 2021-09-23 09:02:09 g 30.581 -27.860 14.135 14.481 0.04 -0.090 -1.909 0.50 0.01 1.00
161950707 ZTF18acxhtzv 2021-09-23 09:02:09 g 29.931 -27.677 17.725 17.904 0.28 -0.834 0.312 0.95 1.00 0.98
161950709 ZTF18adbmiiy 2021-09-23 09:02:09 g 30.075 -27.301 18.048 17.996 0.76 None -2.502 0.74 0.93 1.00
161950719 ZTF21acdrhtu 2021-09-23 09:02:09 g 31.355 -21.849 17.265 17.774 13.42 None None 0.27 0.00 0.97
161950721 ZTF18aczbhua 2021-09-23 09:02:09 g 34.697 -24.746 15.860 15.907 0.62 -0.168 -1.990 0.71 0.60 1.00
161950730 ZTF21acdrhtv 2021-09-23 09:02:09 g 27.046 -24.935 16.687 17.162 15.81 None None 0.26 0.00 1.00
161950733 ZTF18acxhtrg 2021-09-23 09:02:09 g 29.398 -24.402 18.177 17.806 0.13 -0.014 -1.120 0.83 1.00 0.98
161950735 ZTF19abzznjk 2021-09-23 09:02:09 g 28.996 -25.062 18.294 18.010 0.20 -0.129 -1.039 0.87 1.00 0.98
158953681 record(s) found, showing page 1 / 3179074.
Latest Alert: 2021-09-23 09:02:09 UTC