{
  "eventId": "LIGO/Virgo/KAGRA S230521k",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
  "createdOn": 1684887522993,
  "subject": "LIGO/Virgo/KAGRA S230521k: MASTER new OT discovery",
  "bibcode": "2023GCN.33861....1L",
  "body": "V.Lipunov, Ya.Kechin (Lomonosov MSU), D.Buckley (SAAO),\nK.Zhirkov, A.Kuznetsov, P.Balanutsa, A.Chasovnikov, O.Gress, N.Tiurina,E.Gorbovskoy, G.Antipov, D.Vlasenko,  V.Senik,\nV.Topolev, Yu.Tselik, Siyu Wu, V.Vladimirov, D.Cheryasov, D.Zimnukhov, T.Pogrosheva, V.Shumkov, K.Vetrov (Lomonosov Moscow State University, SAI,Physics Department),\nC.Francile, F. Podesta, C.Lopez, R. Podesta (Observatorio Astronomico Felix Aguilar OAFA),\nR. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias),\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,A.Corella,L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory),\nN.M.Budnev, O.Ershova (ISU,API),\nA. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),\nA. Gabovich, V.Yurkov (Blagoveschensk Educational State University),\nM.Gulyaev, E.Minkina (Lomonosov MSU)\n\n\nMASTER OT J071612.28-415537.5 discovery\n\nDuring LVC S230521k https://gcn.gsfc.nasa.gov/notices_l/S230521k.lvc\ninspection survey (Lipunov et al. GCN 33849)\nMASTER-SAAO auto-detection system ( Lipunov et al., \"MASTER Global Robotic Net\", Advances in Astronomy, 2010, 30L )\n discovered OT source at (R.A.,Dec.2000) = 07h 16m 12.28s -41d 55m 37.5s on 2023-05-23.71558 UT.\n\nThe OT unfiltered magnitude is 18.2m (mlim=19.0).\n\nThe OT is seen in 4 images. There is no minor planet at this place.\n\nWe have reference images on 2021-02-16 02:18:16UT with mlim=19.5,\non 2014-12-24.97843 UT with  unfiltered mlim=19.7m and other, there is no outbursts at automatic light curve, but analysis of archive images will be continued.\n\nSpectral observations and deep photometry are required.\nObservations and analysis will be continued.\n\n",
  "circularId": 33861
}