{
  "bibcode": "2017GCN.20493....1T",
  "body": "N.Tyurina, V.M.  Lipunov, O.Gress, E. Gorbovskoy, V.G. \nKornilov, P.Balanutsa,  A.Kuznetsov, V.Shumkov, M.I.Panchenko, A.V.Krylov, \nI.Gorbunov\nLomonosov  Moscow State University, Sternberg Astronomical Institute\n\nD.Buckley, S. Potter, M. Kotze South African Astronomical Observatory\n\nR. Rebolo, M. Serra-Ricart, G. Israelian, N.Lodiu\nThe Instituto de Astrofisica de Canarias\n\nA. Tlatov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nN.M. Budnev, O. Gress, K. Ivanov\nIrkutsk State University\n\nV.Yurkov, Yu.Sergienko, A.Gabovich\nBlagoveschensk Educational State University, Blagoveschensk\n\n\n1) MASTER OT J072347.17+041144.0 discovery\n\nMASTER-SAAO auto-detection system ( Lipunov et al., \"MASTER Global Robotic \nNet\", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) \n= 07h 23m 47.17s +04d 11m 44.0s on 2017-01-09.07133 UT.\nThe OT unfiltered magnitude is 17.5m (mlim=19.3).\nThe OT is seen in 2 images. There is no minor planet at this place.\nWe have reference image on 2015-05-17.70236 UT with unfiltered mlim= \n19.0m.\nSpectral observations are required.\n\nThe discovery and reference images are available at: \nhttp://master.sai.msu.ru/static/OT/072347.17041144.0.png\n\n2) MASTER OT J073310.71-012307.3 discovery - dwarf nova outburst\n\nMASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 07h \n33m 10.71s -01d 23m 07.3s on 2017-01-15.07407 UT.\nThe OT unfiltered magnitude is 18.0m (mlim=18.7). The OT is seen in 2 \nimages. The second image on 2017-01-15.07656 has m_OT=18.3 (possible UGSU \ntype?). There are 2 images on 2017-01-18 18:44:23UT (MASTER-Kislovodsk) \nwith m_OT=18.8 (mlim=19.8).\nWe have reference images on 2016-10-13.09314 UT with unfiltered mlim= \n19.0m (MASTER-SAAO), on 2013-02-11 18:07:22UT with \nmlim=19.7(MASTER-Kislovodsk).\nThere were previous outbursts in MASTER databases:\non 2013-12-27 20:41:41.17 with m_OT=18.5 (2 images in MASTER-Kislovodsk)\non 2015-12-17 17:22:22.72 with m_OT=17.5 (2 images in MASTER-Tunka)\n\nSpectral observations are required.\nThe discovery and reference images are available at: \nhttp://master.sai.msu.ru/static/OT/073310.71-012307.3.png\n\n3) MASTER OT J080700.56+162008.7 detection\n\nMASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 08h \n07m 00.56s +16d 20m 08.7s on 2017-01-19.13492 UT.\nThe OT unfiltered magnitude is 19.3m (limit 19.8m).\nThe OT is seen in 2 images (2017-01-19 03:14:17.943, 03:10:37.397). We \nhave reference image without OT on 2016-11-09.20727 UT with unfiltered \nmagnitude limit 20.0m.\nThere is Sloan star with gmag=22.9, r=21.2, i=19.6\nhttp://vizier.u-strasbg.fr/viz-bin/VizieR?-source=&-out.add=_r&-out.add=_RAJ%2C_DEJ&-sort=_r&-to=&-out.max=20&-meta.ucd=2&-meta.foot=1&-c=121.75233333333+16.335738888889&-c.rs=5\n\nSpectral observations are required.\nThe discovery and reference images are available at: \nhttp://master.sai.msu.ru/static/OT/080700.56162008.7.png\n\n4)  MASTER OT J075227.62+113311.6 discovery - QSO flare\n\nMASTER-SAAO auto-detection system\ndiscovered OT source at (RA, Dec) = 07h 52m 27.62s +11d 33m 11.6s on \n2017-01-08.99171 UT.\n\nThe OT unfiltered magnitude is 18.5m (mlim=19.5).\nThe OT is seen in 8 images. There is no minor planet at this place.\nWe have reference image on 2015-05-25.70605 UT with unfiltered mlim= \n19.4m.\nSpectral observations are required.\nThe discovery and reference images are available at: \nhttp://master.sai.msu.ru/static/OT/075227.62113311.6.png\n\n5) MASTER OT J063256.50-212333.4 detection - possibly UVCet flare\n\nMASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 06h \n32m 56.50s -21d 23m 33.4s on 2017-01-18.91929 UT.\nThe OT unfiltered magnitude is 17.6m (limit 19.7m).\n\nThe OT is seen in 5 images, UVCet preliminary (J-K=0.8)\n2017-01-18 21:41:32.849 16.0\n2017-01-18 21:45:12.99 16.2\n2017-01-18 21:48:58.848 16.5\n2017-01-18 22:03:47.638 17.5\n\nWe have reference image without OT on 2015-12-18.08299 UT with unfiltered \nmagnitude limit 20.7m.\nSpectral observations are required.\nThe discovery and reference images are available at: \nhttp://master.sai.msu.ru/static/OT/063256.50-212333.4.png\n\n6)  MASTER OT J074554.47+283123.8 discovery\n\nMASTER-SAAO auto-detection system ( Lipunov et al., \"MASTER Global Robotic \nNet\", Advances in Astronomy, 2010, 30L )\ndiscovered OT source at (RA, Dec) = 07h 45m 54.47s +28d 31m 23.8s on \n2017-01-05.04067 UT.\n\nThe OT unfiltered magnitude is 18.4m (mlim19.7=).\nThe OT is seen in 2 image. We have reference image on 2017-01-05.03814 UT \nwith unfiltered mlim= 19.6m.\nThere is no known objects inside 3\" in VIZIER database, but there is very \nfaint source at Sloan image (rmag<23)\nSpectral observations are required.\n\nThe discovery and reference images are available at:\nhttp://master.sai.msu.ru/static/OT/074554.47283123.8.png\n\n\n7)  MASTER OT J081016.59+335347.5 discovery - PSN in 1.9\"W, 2.4\"S of \nPGC2040653\n\nMASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) \n= 08h 10m 16.59s +33d 53m 47.5s on 2017-01-08.15065 UT.\nThe OT unfiltered magnitude is 17.0m (limit 17.6m).\n\nThe OT is seen in 2 images. There is no minor planet at this place.\nWe have reference image without OT on 2016-11-02.89640 UT with unfiltered \nmagnitude limit 19.8m.\nSpectral observations are required.\n\nThe discovery and reference images are available at:\nhttp://master.sai.msu.ru/static/OT/081016.59335347.5.png\n\n\n8) MASTER103001.37+680122.3 discovery - dwarf nova outburst?\n\nMASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) \n= 10h 30m 01.37s +68d 01m 22.3s on 2017-01-07.12512 UT.\nThe OT unfiltered magnitude is 18.5m (limit 20.3m).\n\nThe OT is seen in 2 image. There is no minor planet at this place.\nThere is m_OT=20.1 on 2017-01-06 02:18:08UT (dwarf nova?), it means \namplitude of current outburst more then 1.5mag\nSpectral observations are required.\nThe discovery and reference images are available at:\nhttp://master.sai.msu.ru/static/OT/103001.37680122.3.png\n\n9) MASTER OT J073330.60+203432.7 discovery - dwarf nova outburst?\n\nMASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 07h \n33m 30.60s +20d 34m 32.7s on 2017-01-18.65299 UT.\nThe OT unfiltered magnitude is 18.1m (limit 19.5m).\n\nThe OT is seen in 2 images. There is no minor planet at this place.\nWe have reference image without OT on 2017-01-05 20:20:59 with mlim=19.8, \non 2011-11-28.89471 UT with unfiltered magnitude limit 20.0m.\nThere is Sloan blue star with rmag=19.80, it means current outburst \namplitude more then 1.9m\nhttp://skyserver.sdss.org/dr9/en/tools/quicklook/quickobj.asp?id=1237660564038877690\n\nSpectral observations are required.\n\n\n10) MASTER OT J084411.47+670931.6 - flare, >1.5mag Ampl\nMASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) \n= 08h 44m 11.47s +67d 09m 31.6s on 2017-01-20.72236 UT.\nThe OT unfiltered magnitude is 19.1m (limit 20.1m).\n\nThe OT is seen in 6 images. There is no minor planet at this place.\n\nWe have reference image without OT on 2012-10-20.89072 UT with unfiltered \nmagnitude limit 19.8m.\nThere is USNO B1 star with R2=20.6, APM blue mag=22.04, it means MASTEr \nW=20.9, Ampl of current outburst >1.5\n\nSpectral observations are required.\n\n\n11) MASTER OT J102428.83+641859.1 discovery - QSO flare\n\nMASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 10h \n24m 28.83s +64d 18m 59.1s on 2017-01-07.81205 UT.\nThe OT unfiltered m is 17.8m (limit 20.2m).\n\nThe OT is seen in 23 images in history. Last QSO (Sloan red=20.5) \noutbursts detected by MASTER:\n2015-03-09 17:00:10.572  19.0\n2017-01-05 14:58:23.595 17.9\n2017-01-07 19:29:21.053 17.8\n2017-01-07 19:45:55.751 17.8\n\nWe have reference image without OT on 2016-08-20 18:40:31 with mlim=18.7, \non 2015-07-10.70841 UT with unfiltered mlim=19.6m.\n\nSpectral observations are required.\n\n\n\n12) MASTER OT J075227.69+113313.2 discovery - QSO flare\n\n\nMASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 07h \n52m 27.69s +11d 33m 13.2s on 2017-01-06.70229 UT.\nThe OT magnitude in unfiltered is 18.4m (limit 19.0m).\n\nThe OT is seen in 2 images.\nWe have reference image without OT on 2015-10-19.86133 UT with unfiltered \n19.3m.\n\nThere is Sloan source in 1\" with red mag 19.819, GALEX source(accretion), \nQSO candidate (Richards+, 2015).\n\nSpectral observations are required.\n\n13) MASTER OT J081506.13+381123.3 discovery - PSN in 11\"E,2.8\"N of \nPGC2120251\n\nMASTER-Kislovodsk auto-detection system ( Lipunov et al., \"MASTER Global \nRobotic Net\", Advances in Astronomy, 2010, 30L ) discovered OT source at \n(RA, Dec) = 08h 15m 06.13s +38d 11m 23.3s on 2017-01-16.01742 UT.\nThe OT unfiltered magnitude is 16.9m (limit 18.6m).\nThe OT is seen in 2 images in MASTER-Kislovodsk and in 2 in MASTER-SAAO \n(2017-01-18 00:38:36UT).\nThere is no minor planet at this place.\nWe have reference image without OT on 2016-11-29.91344 UT with unfiltered \nmagnitude limit 20.1m.\nSpectral observations are required.\nThe discovery and reference images are available at:\nhttp://master.sai.msu.ru/static/OT/081506.13381123.3.png\n\n14) MASTER OT J074928.00+190452.3 discovery ( 2017-01-19 22:23:28.536UT, \nmOT=17.4) = current outburst of UG (dwarf nova) CSS 090331:074928+190452\n15) MASTER OT J051306.58-261951.9 detection (2017-01-11 23:36:39.213, \nm_OT=16.1) = current outburst of UGSU  ASASSN-14kf\n16) MASTER OT J224258.06-194551.5 detection  (2017-01-04 19:44:11.46, \nm_OT=13.7) = current outburst of UGSU (Dwarf nova) ASASSN-14hs\n17) MASTER OT J101511.20+812418.1 discovery () = current outburst of dwarf \nnova ASASSN-15gq / UGSU\n18) MASTER OT J101813.00+715542.7 discovery 2017-01-04 20:20:00.35UT, \nm_OT=15.1) = current outburst of dwarf nova CI UMa (UGSU)\n19) MASTER OT J075107.56+300628.0 discovery (2017-01-06 18:33:32.877, \nm_OT=15.3) = current outburst of dwarf nova  SDSS J075107.50+300628.4\n20) MASTER OT J105811.78+811432.6 discovery - BLA flare in GW170401 field \n, publishied GCN20392\n\n21) MASTER OT J090021.21+635049.7 - SN, publishied GCN20381",
  "circularId": 20493,
  "createdOn": 1484997118000,
  "email": "lipunov2007@gmail.com",
  "subject": "LIGO/Virgo G268556: Global MASTER Net 21 OTs detection",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov2007@gmail.com>",
  "eventId": "LIGO/Virgo G268556"
}