RA/DEC (2000)
12:40:00.450 -17:44:25.00
190.001875 -17.740278
Type
---
Redshift
Discovery Report
Reporting Group
MASTER
Discovering Data Source
MASTER
Discovery Date
2026-04-21 04:28:21.504
TNS AT
Y
Public
Y
Discovery Mag
17.9
Filter
Other-
Reporter/s
K.Zhirkov, V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, G.Antipov, A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A.Sosnovskij (CrAO), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity), D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Light curves

 ▌Other_Other_Other
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
No Data
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Other- Other_Other 2025-07-06 22:47:36 - 2026-04-21 04:34:56 2460863.44972 - 2461151.69093 6
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
576819 2026-04-21 04:34:56 2461151.69093 18.9 20.8 VegaMag Other- Other_Other 180 Robot MASTER-OAFA
576818 2026-04-21 04:34:55 2461151.69092 18.9 20.8 VegaMag Other- Other_Other 180 Robot MASTER-OAFA
576721 2026-04-21 04:29:27 2461151.68712 18.1 20.1 VegaMag Other- Other_Other 60 Robot MASTER-OAFA
576720 2026-04-21 04:28:20 2461151.68634 17.9 20 VegaMag Other- Other_Other 60 Robot MASTER-OAFA
576719 2025-07-06 22:47:36 2460863.44972 20 VegaMag Other- Other_Other 180 Robot [Last non detection] MASTER-OAFA
576817 2025-07-06 22:47:36 2460863.44972 20 VegaMag Other- Other_Other 180 Robot [Last non detection] MASTER-OAFA
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
300908 2026-04-21 21:15:35 MASTER A.Telnova, V.Lipunov, E.Gorbovskoy et al. MASTER MASTER 12:40:00.450 -17:44:25.00 2026-04-21 04:28:21.504 18.9 Other- Other MASTER OT J124000.45-174425.0 MASTER N
300857 2026-04-21 10:45:11 MASTER K.Zhirkov, V.Lipunov, E.Gorbovskoy et al. MASTER MASTER 12:40:00.470 -17:44:25.60 2026-04-21 04:28:21.504 17.9 Other- PSN MASTER OT J124000.47-174425.6 MASTER Fermi/SVOM GRB 260421B optical counterpart, detected by MASTER 2026TNSTR1752....1Z N
No Data

Comments

TNS
System

Tue, 04/21/2026 - 21:15

Object coordinates updated

Object coordinates updated according to AT-report 300908 of Group MASTER
Previous RA, DEC: 12:40:00.470, -17:44:25.60 (190.001958, -17.740444)
Updated RA, DEC: 12:40:00.450, -17:44:25.00 (190.001875, -17.740278)