XMM-Newton Target of Opportunity (ToO)

ToO Policies & Procedures

Targets of Opportunity (ToOs) are subject to the policies and procedures explained in the XMM-Newton Policies & Procedures Document which is available here.
Please, pay particular attention to Section 5.2.2 and especially Subsection 5.2.2.2, which makes reference to unanticipated ToO alerts explaining also the policy for the determination of proprietary periods of such observations.

"Discretionary Time” may be granted for programmes where a timely observation (outside of the normal announcement of opportunity cycle) is likely to result in a significant scientific impact.

ToO Alert

Investigators may notify the XMM-Newton SOC of a Target of Opportunity online. Simply complete the details on the ToO Notification Page.

Pending Anticipated ToOs

A list of anticipated ToO observations already accepted by the XMM-Newton Observing Time Allocation Committee (OTAC), which are currently not yet fulfilled, is available at this link.

Unanticipated ToO Details

The following list comprises approved and performed unanticipated ToOs.

The status of the data is denoted using the following acronyms:

The links from entries in this table are as follows:

This table is weekly updated, but there might be periods for which updates take slightly longer. Should you need to know details about a ToO/DPS observation, that are not given below (yet), please do not hesitate to contact the HelpDesk.

Rev Observation
Id
Target RA Dec Exp. Time
(ksec)
Data Status ODF Data
when available
PPS Data
when available
Proposer/
Comments
TBD. TBD OGLE16aaa 01:07:20.90 -64:16:20.6 96.0 ToO (TBD) ODF Data PPS Data (Dr. M. Guolo)
TBD. TBD NGC 3783 11:39:01.70 -37:44:19.0 110.0 DPS (TBD) ODF Data PPS Data (XRISM PV / Dr. J. Kaastra)
4601 0954191001 AT 2018cqh 02:33:46.90 -01:01:28.5 39.0 ToO (TBD) ODF Data PPS Data (Dr. J. Wang)
4599 0954190901 EP241021a 01:55:23.60 +05:56:22.1 57.0 ToO (TBD) ODF Data PPS Data (Dr. R. Eyles-Ferris)
4599 0953010801 1ES 1927+654 19:27:19.50 +65:33:54.4 28.8 ToO (TBD) ODF Data PPS Data (Dr. M. Masterson)
4590 0954190801 OGLE16aaa 01:07:20.90 -64:16:20.6 18.5 ToO (TBD) ODF Data PPS Data (Dr. M. Guolo)
4586 0954190201 AT2024mvz 23:40:27.80 -07:00:51.8 42.1 ToO (30-Jun-2025) ODF Data PPS Data (Dr. S. Huang)
4583 0954190401 eRASSt_J032543-45124 03:25:43.20 -45:12:44.6 135.2 ToO (23-Jun-2025) ODF Data PPS Data (Dr. R. Arcodia)
4582 0954190601 AT2022upj 00:23:56.90 -14:25:23.1 51.7 ToO (20-Jun-2025) ODF Data PPS Data (Dr. Z. Lin)
4578 0954190501 EP240222a 11:32:06.20 +27:00:17.6 75.2 ToO (13-Jun-2025) ODF Data PPS Data (Dr. W. Zhang)
4577 0954190301 GRB20241105A 04:24:59.00 -49:45:09.4 45.9 ToO (13-Jun-2025) ODF Data PPS Data (Dr. E. Troja)
4577 0954190101 AT2023lli 22:57:39.50 +40:32:39.8 30.1 ToO (13-Jun-2025) ODF Data PPS Data (Dr. S. Huang)
4576 0953791201 PG1211+143 12:14:17.70 +14:03:13.3 31.19 ToO (13-Jun-2025) ODF Data PPS Data (Dr. J. Reeves)
4575 0953791101 PG1211+143 12:14:17.70 +14:03:13.3 17.0 ToO (13-Jun-2025) ODF Data PPS Data (Dr. J. Reeves)
4575 0953790101 PG1211+143 12:14:17.70 +14:03:13.3 84.2 ToO (13-Jun-2025) ODF Data PPS Data (Dr. J. Reeves)
4574 0953012101 AT 2024puz 17:31:20.60 +53:24:15.1 46.4 ToO (04-Jun-2025) ODF Data PPS Data (Dr. J. Somalwar)
4569 0953790501 Vela X-1 09:02:06.90 -40:33:16.9 43.5 ToO (25-May-2025) ODF Data PPS Data (Dr. C. Diez)
4568 0942561301 AT2023cvb 19:14:25.60 +41:40:09.2 40.0 ToO (TBD) ODF Data PPS Data (Dr. D. Lin / PI: Dr Guolo)
4566 0953791001 mrk 509 20:44:09.74 -10:43:24.6 56.4 ToO (20-May-2025) ODF Data PPS Data (Dr. V. Braito)
4566 0953790901 mrk 509 20:44:09.74 -10:43:24.6 15.0 ToO (20-May-2025) ODF Data PPS Data (Dr. V. Braito)
4565 0953790801 mrk 509 20:44:09.74 -10:43:24.6 35.6 ToO (20-May-2025) ODF Data PPS Data (Dr. V. Braito)
4562 0953012301 NGC 7213 22:09:16.20 -47:10:00.5 56.4 ToO (11-May-2025) ODF Data PPS Data (Dr. E. Kammoun)
4562 0953012201 NGC 7213 22:09:16.20 -47:10:00.5 47.4 ToO (18-May-2025) ODF Data PPS Data (Dr. E. Kammoun)
4560 0953790401 NGC 3516 11:06:47.50 +72:34:07.3 45.1 ToO (06-May-2025) ODF Data PPS Data (Dr. E. Behar)
4559 0953790301 NGC 3516 11:06:47.50 +72:34:07.3 46.8 ToO (06-May-2025) ODF Data PPS Data (Dr. E. Behar)
4558 0953790201 NGC 3516 11:06:47.50 +72:34:07.3 62.4 ToO (06-May-2025) ODF Data PPS Data (Dr. E. Behar)
4558 0953012001 HAT-P-11 19:50:50.30 +48:04:51.2 41.0 ToO (06-May-2025) ODF Data PPS Data (Dr. J. Pye)
4554 0953010601 1ES 1927+654 19:27:19.50 +65:33:54.4 27.7 ToO (28-Apr-2025) ODF Data PPS Data (Dr. M. Masterson)
4550 0953010901 1ES 1927+654 19:27:19.50 +65:33:54.4 30.3 ToO (24-Apr-2025) ODF Data PPS Data (Dr. M. Masterson)
4541 0953011901 V4641 Sgr 18:19:21.60 -25:24:25.9 52.2 ToO (30-Mar-2025) ODF Data PPS Data (Dr. Z. Zhang)
4540 0953011701 mrk279 13:53:03.40 +69:18:29.5 52.7 ToO (27-Mar-2025) ODF Data PPS Data (Dr. E. Costantini)
4539 0953011601 mrk279 13:53:03.40 +69:18:29.5 52.7 ToO (26-Mar-2025) ODF Data PPS Data (Dr. E. Costantini)
4535 0953011501 Her X-1 16:57:49.80 +35:20:32.7 20.0 ToO (18-Mar-2025) ODF Data PPS Data (Dr. P. Kosec)
4534 0953011401 Her X-1 16:57:49.80 +35:20:32.7 59.9 ToO (16-Mar-2025) ODF Data PPS Data (Dr. P. Kosec)
4531 0953011301 AT2024puz 17:31:20.60 +53:24:15.1 52.8 ToO (10-Mar-2025) ODF Data PPS Data (Dr. J. Somalwar)
4520 0953011201 AT2024puz 17:31:20.60 +53:24:15.1 27.12 ToO (23-Feb-2025) ODF Data PPS Data (Dr. J. Somalwar)
4515 0953010301 ZTF20abwtifz 03:13:35.70 -02:09:06.5 28.9 ToO (08-Feb-2025) ODF Data PPS Data (Dr. Y. Wang)
4513 0953011101 VAST J1448-6856 14:48:34.00 -68:56:44.1 34.19 ToO (06-Feb-2025) ODF Data PPS Data (Dr. N. Rea)
4513 0953011001 NGC 5907 ULX1 15:15:58.59 +56:18:10.7 64.0 ToO (06-Feb-2025) ODF Data PPS Data (Dr. D. Walton)
4513 0953010101 ZTF20abwtifz 03:13:35.70 -02:09:06.5 23.2 ToO (06-Feb-2025) ODF Data PPS Data (Dr. Y. Wang)
4511 0953010501 1ES 1927+654 19:27:19.52 +65:33:54.4 28.1 ToO (31-Jan-2025) ODF Data PPS Data (Dr. M. Masterson)
4511 0953010201 ZTF20abwtifz 03:13:35.70 -02:09:06.5 31.3 ToO (31-Jan-2025) ODF Data PPS Data (Dr. Y. Wang)
4507 0953010401 1ES 1927+654 19:27:19.52 +65:33:54.4 28.7 ToO (26-Jan-2025) ODF Data PPS Data (Dr. M. Masterson)
4507 0952390701 GSN 069 01:19:08.70 -34:11:30.5 30.8 ToO (26-Jan-2025) ODF Data PPS Data (Dr. G. Miniutti)
4506 0952390501 GSN 069 01:19:08.70 -34:11:30.5 30.5 ToO (24-Jan-2025) ODF Data PPS Data (Dr. G. Miniutti)
4505 0952390601 GSN 069 01:19:08.70 -34:11:30.5 23.5 ToO (22-Jan-2025) ODF Data PPS Data (Dr. G. Miniutti)
4504 0952390401 GSN 069 01:19:08.70 -34:11:30.5 43.4 ToO (17-Jan-2025) ODF Data PPS Data (Dr. G. Miniutti)
4503 0952390301 GSN 069 01:19:08.70 -34:11:30.5 32.1 ToO (16-Jan-2025) ODF Data PPS Data (Dr. G. Miniutti)
4502 0952390201 GSN 069 01:19:08.70 -34:11:30.5 18.1 ToO (16-Jan-2025) ODF Data PPS Data (Dr. G. Miniutti)
4499 0935191201 AT2023mhs 13:43:15.70 +19:15:00.9 121.4 ToO (11-Jan-2025) ODF Data PPS Data (Dr. E. Behar)
4498 0935191701 EXO 0748-676 07:48:33.70 -67:45:07.5 79.9 DPS (Public) ODF Data PPS Data (Dr. A. Miraval Zanon, Dr. A. Knight, Dr. S. Bhattacharya)
4498 0935191601 ZTF19acnskyy 13:35:19.90 +07:28:07.5 35.2 ToO (08-Jan-2025) ODF Data PPS Data (Dr. L. Hernandez)
4497 0935191501 ZTF19acnskyy 13:35:19.92 +07:28:07.5 28.48 ToO (04-Jan-2025) ODF Data PPS Data (Dr. L. Hernandez)
4496 0952390101 GSN 069 01:19:08.70 -34:11:30.5 41.8 ToO (02-Jan-2025) ODF Data PPS Data (Dr. G. Miniutti)
4496 0935191401 ZTF19acnskyy 13:35:19.90 +07:28:07.5 29.5 ToO (02-Jan-2025) ODF Data PPS Data (Dr. L. Hernandez)
4494 0934990601 NGC 4151 12:10:32.60 +39:24:20.6 63.2 DPS (01-Jul-2025) ODF Data PPS Data (XRISM PV / Dr. J. Miller)
4492 0935191101 AT2022upj 00:23:56.83 -14d 25' 23 58.2 ToO (01-Jan-2025) ODF Data PPS Data (Dr. Z. Lin)
4490 0934990501 NGC 4151 12:10:32.60 +39:24:20.6 54.2 DPS (20-Jun-2025) ODF Data PPS Data (XRISM PV / Dr. J. Miller)
4484 0932391801 NGC 4395 12:25:48.90 +33:32:48.7 35.9 DPS (Public) ODF Data PPS Data (Dr. I. McHardy)
4483 0932391701 NGC 4395 12:25:48.90 +33:32:48.7 43.0 DPS (25-Dec-2024) ODF Data PPS Data (Dr. I. McHardy)
4480 0935191001 FRB20240114A 21:27:39.80 +04:19:45.6 28.7 ToO (Public) ODF Data PPS Data (Dr. F. Eppel)
4479 0935190501 WISEA J095748.28-371618.3 09:57:48.30 -37:16:18.4 30.0 ToO (Public) ODF Data PPS Data (Dr. C. Panagiotou)
4478 0935190701 FRB20240114A 21:27:39.80 +04:19:45.6 25.0 ToO (Public) ODF Data PPS Data (Dr. F. Eppel)
4477 0934990401 NGC 4151 12:10:32.60 +39:24:20.6 50.0 DPS (27-May-2025) ODF Data PPS Data (XRISM PV / Dr. J. Miller)
4475 0935190601 FRB20240114A 21:27:39.80 +04:19:45.6 25.2 ToO (Public) ODF Data PPS Data (Dr. F. Eppel)
4474 0935190301 RBS 1774 21:43:03.80 +06:54:20.0 34.9 ToO (Public) ODF Data PPS Data (Dr. G. Pavlov)
4467 0935190101 AT2019teq 18:59:05.50 +47:31:05.7 55.7 ToO (Public) ODF Data PPS Data (Dr. J. Chakraborty)
4465 0935190401 EP240426a 08:07:25.60 -29:27:39.2 44.9 DPS (Public) ODF Data PPS Data (Dr. N. Schartel)
4462 0934990301 4U1916-053 19:18:47.90 -05:14:09.0 55.3 DPS (29-Apr-2025) ODF Data PPS Data (XRISM PV / Dr. M. Diaz-Trigo)
4460 0934990201 4U1916-053 19:18:47.90 -05:14:09.0 105.2 DPS (25-Apr-2025) ODF Data PPS Data (XRISM PV / Dr. M. Diaz-Trigo)
4459 0934990101 SS 433 19:11:49.60 +04:58:57.8 66.9 DPS (24-Apr-2025) ODF Data PPS Data (XRISM PV / Dr. M. Shidatsu)
4457 0935190201 AT 2024eff 05:51:41.90 -19:13:06.2 26.8 ToO (Public) ODF Data PPS Data (Dr. Y. Wang)
4454 0932392301 Sgr A* 17:45:40.00 -29:00:28.1 55.7 DPS (Public) ODF Data PPS Data (Dr. N. Schartel)
4442 0932392101 1ES 1927+654 19:27:19.50 +65:33:54.3 33.1 ToO (Public) ODF Data PPS Data (Dr. M. Masterson)
4441 0932392201 AT2020ayl 16:01:00.40 +33:16:15.9 16.0 ToO (Public) ODF Data PPS Data (Dr. S. Xinwen)
4438 0932392001 1ES 1927+654 19:27:19.50 +65:33:54.3 33.0 ToO (Public) ODF Data PPS Data (Dr. M. Masterson)
4428 0932391601 ZTF21abccdld 15:56:41.90 +68:22:42.9 36.9 ToO (Public) ODF Data PPS Data (Dr. Z. Lin)
4427 0932391901 ZTF20abwtifz 03:13:35.70 -02:09:06.2 23.1 ToO (Public) ODF Data PPS Data (Dr. S. Gezari)
4409 0932391401 eRO-QPE1 02:31:47.30 -10:20:10.3 126.1 ToO (Public) ODF Data PPS Data (Dr. R. Arcodia)
4408 0932391201 ASASSN-14ko 05:25:18.10 -46:00:20.3 50.7 ToO (Public) ODF Data PPS Data (Dr. J. Chakraborty)
4407 0932391501 AT2022upj 00:23:56.80 -24:25:23.0 37.5 ToO (Public) ODF Data PPS Data (Dr. Z. Lin)
4403 0932390701 ZTF22abajudi 02:20:08.00 -22:43:15.4 43.0 ToO (Public) ODF Data PPS Data (Dr. Y. Yao)
4399 0932391301 AT2023lli 22:57:39.50 +40:32:40.7 20.0 ToO (Public) ODF Data PPS Data (Dr. S. Huang)
4395 0931791301 2MASX J02344872-4419325 02:34:48.70 -44:19:32.5 36.0 ToO (Public) ODF Data PPS Data (Dr. R. Arcodia)
4391 0932391101 GRB231117A 22:09:33.60 +13:31:21.1 59.9 ToO (Public) ODF Data PPS Data (Dr. E. Troja)
4390 0932390201 The Cloverleaf ORC 11:37:23.50 -00:50:49.2 35.0 DPS (Public) ODF Data PPS Data (Dr. E. Bulbul)

For ToO data prior to revolution 4390, please refer to the ToO Archive Page