RA/DEC (2000)
13:59:17.520 -37:52:42.30
209.823 -37.878417
Type
CV
Redshift
0.001256
Reporting Group
MASTER
Discovering Data Source
MASTER
Discovery Date
2026-03-11 00:46:42.816
TNS AT
Y
Public
Y
Discovery Mag
16.1
Filter
Other-
Reporter/s
V.Shumkov, M.A.Kuznetsova, 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)

Spectra

 AT_2026fhe - 2026-03-11 22:26:23 Lesedi / Mookodi (BlackGEM)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 Other_Other_Other
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
23209 2026-03-11 22:26:23 Lesedi / Mookodi 600 io_robot SAAO Moses Mlangeni BlackGEM tns_2026fhe_2026-03-11_22-26-23_Lesedi_Mookodi_BlackGEM.txt Object The spectrum is characterised by a blue continuum with a prominent emission feature consistent with Hα (6563 Å). The shorter-wavelength region of the spectrum is relatively noisy, and while weak structure is present, additional Balmer lines such as Hβ and Hγ are not unambiguously detected in the current spectrum. The combination of a blue continuum together with strong Hα emission is commonly observed in accreting cataclysmic variable systems, particularly dwarf novae during or near outburst phases. No spectral features consistent with supernovae are present.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Other- Other_Other 2015-02-26 23:49:52 - 2026-03-11 00:58:58 2457080.49296 - 2461110.54095 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
563954 2026-03-11 00:58:58 2461110.54095 16 19 VegaMag Other- Other_Other 60 Robot MASTER-SAAO
563953 2026-03-11 00:46:43 2461110.53244 16.1 19.1 VegaMag Other- Other_Other 60 Robot MASTER-SAAO
563952 2015-02-26 23:49:52 2457080.49296 21.2 VegaMag Other- Other_Other 540 Robot [Last non detection] MASTER-SAAO
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
294162 2026-03-11 09:50:29 MASTER V.Shumkov, M.A.Kuznetsova, V.Lipunov et al. MASTER MASTER 13:59:17.520 -37:52:42.30 2026-03-11 00:46:42.816 16.1 Other- PSN MASTER OT J135917.52-375242.3 MASTER dwarf nova outburst, ampl>5.6m (MASTER mlim=21.4 at 2015-07-18 18:31:28UT) 2026TNSTR1015....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23208 2026-03-13 09:20:48 Moses Mlangeni Moses Mlangeni (UCT/SAAO), Lutho Booi (UCT/SAAO), Francois Campher (UCT/SAAO), Gavin Ramsay (Armagh), Victor Moloi (UCT/SAAO), Paul Groot (Radboud/UCT/SAAO) BlackGEM CV 0.001256 1 BlackGEM We obtained an optical spectrum of AT2026fhe on 2026-03-11T22:26:23 UTC using the Lesedi 1.0-m telescope at the South African Astronomical Observatory (SAAO) equipped with the Mookodi spectrograph. The target was observed at coordinates RA = 13:59:20.756, Dec = −37:50:06.75 (J2000). The data were reduced using the Mookodi spectroscopic pipeline, and the resulting spectrum was analysed with SNID-Sage, which yielded a best-fit redshift of z = 0.001256. The spectrum is characterised by a blue continuum with a prominent emission feature consistent with Hα (6563 Å). The shorter-wavelength region of the spectrum is relatively noisy, and while weak structure is present, additional Balmer lines such as Hβ and Hγ are not unambiguously detected in the current spectrum. The combination of a blue continuum together with strong Hα emission is commonly observed in accreting cataclysmic variable systems, particularly dwarf novae during or near outburst phases. No spectral features consistent with supernovae are present. We therefore classify AT2026fhe as a cataclysmic variable (CV), likely a dwarf nova, based on its spectroscopic properties. Archival observations from the ATLAS experiment show repeated outbursts over the past years and the object has been identified as 2026TNSCR1063....1M
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
23209 2026-03-11 22:26:23 Lesedi / Mookodi 600 io_robot SAAO Moses Mlangeni BlackGEM tns_2026fhe_2026-03-11_22-26-23_Lesedi_Mookodi_BlackGEM.txt Object The spectrum is characterised by a blue continuum with a prominent emission feature consistent with Hα (6563 Å). The shorter-wavelength region of the spectrum is relatively noisy, and while weak structure is present, additional Balmer lines such as Hβ and Hγ are not unambiguously detected in the current spectrum. The combination of a blue continuum together with strong Hα emission is commonly observed in accreting cataclysmic variable systems, particularly dwarf novae during or near outburst phases. No spectral features consistent with supernovae are present.

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