RA/DEC (2000)
19:12:09.702 -32:07:25.41
288.040423 -32.123726
Type
SN Ia
Redshift
0.0189
Related AstroNotes: 2026-58
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-03-06 15:19:27.264
TNS AT
Y
Public
Y
Discovery Mag
16.706
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill, P. J. Broda, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)

Spectra

 SN_2026eyt - 2026-03-09 02:16:26 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

 GOTO-S_GOTO-4_L
 ATLAS-CHL_ATLAS-04_cyan
 ATLAS-MLO_ATLAS-01_orange
   
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
23165 2026-03-09 02:16:26 Lesedi / Mookodi 600 N. Erasmus, S. Potter, C. van Gend, H. Worters, S. Chandra, D. Cunnama, M. Hlakola, P. Rabe, R. Julie (all SAAO) Simon de Wet BlackGEM tns_2026eyt_2026-03-09_02-16-26_Lesedi_Mookodi_BlackGEM.csv Object The spectrum was taken with the SAAO's 1-m Lesedi robotic telescope with the Mookodi low-resolution spectrograph and imager [1] as part of the “IO” rapid follow-up program [2]. The spectrum was taken with the widest (4") slit width which resulted in a spectral resolution of R ~ 200 at 6000 Angstrom. [1] https://doi.org/10.1117/1.JATIS.10.2.025005 [2] https://doi.org/10.1117/12.3015250
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-11-04 09:30:04 - 2026-03-10 18:46:59 2460983.895882 - 2461110.282634 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
569007 2026-03-10 18:46:59 2461110.282634 17.15 0.04 ABMag L-GOTO GOTO-S_GOTO-4 135
569006 2025-11-04 09:30:04 2460983.895882 18.7 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
cyan-ATLAS ATLAS-CHL_ATLAS-04 2025-11-17 01:36:50 - 2025-11-17 01:36:50 2460996.56725 - 2460996.56725 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
563056 2025-11-17 01:36:50 2460996.56725 18.53 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2026-03-06 15:19:27 - 2026-03-06 15:19:27 2461106.13851 - 2461106.13851 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
563057 2026-03-06 15:19:27 2461106.13851 16.706 0.044 18.49 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
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
296863 2026-03-21 12:00:22 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 19:12:09.728 -32:07:25.54 2026-03-10 18:46:59.232 17.15 L-GOTO Other GOTO26cep GOTO N
293734 2026-03-06 23:55:22 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 19:12:09.702 -32:07:25.41 2026-03-06 15:19:27.264 16.706 orange-ATLAS PSN ATLAS26cqd ATLAS 2026TNSTR.929....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23164 2026-03-09 07:05:38 Simon de Wet Simon de Wet BlackGEM SN Ia 0.0189 1 BlackGEM SNID SAGE (Stoppa, in prep, 2025) shows good matches to Type Ia-norm spectra at a phase of ~35 days. The average redshift of 0.0189 from SNID SAGE agrees with the NED redshift of 0.019. 2026TNSCR.992....1d
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
23165 2026-03-09 02:16:26 Lesedi / Mookodi 600 N. Erasmus, S. Potter, C. van Gend, H. Worters, S. Chandra, D. Cunnama, M. Hlakola, P. Rabe, R. Julie (all SAAO) Simon de Wet BlackGEM tns_2026eyt_2026-03-09_02-16-26_Lesedi_Mookodi_BlackGEM.csv Object The spectrum was taken with the SAAO's 1-m Lesedi robotic telescope with the Mookodi low-resolution spectrograph and imager [1] as part of the “IO” rapid follow-up program [2]. The spectrum was taken with the widest (4") slit width which resulted in a spectral resolution of R ~ 200 at 6000 Angstrom. [1] https://doi.org/10.1117/1.JATIS.10.2.025005 [2] https://doi.org/10.1117/12.3015250

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