RA/DEC (2000)
02:59:52.664 +23:24:32.72
44.9694313 +23.4090876
Type
SN Ia-91bg-like
Redshift
0.041
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-10-01 11:39:09.792
TNS AT
Y
Public
Y
Discovery Mag
19.301
Filter
cyan-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland, R. Siverd (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 (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (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_2025ziy - 2025-10-10 00:00:00 LT / SPRAT (TCD)z=
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Show Tellurics 
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 LAST_LAST-Cam_Clear
 P48_ZTF-Cam_r
 P48_ZTF-Cam_g
 ATLAS-HKO_ATLAS-02_cyan
   
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
22198 2025-10-10 00:00:00 LT / SPRAT 1200 Cillian O'Donnell, Kate Maguire, Umut Burgaz, Christine Collins, Ravi Seth, CG Touchard-Paxton, Jacobus Terwel, Thomas Muller Br Cillian O'Donnell TCD tns_2025ziy_2025-10-10_LT_SPRAT_TCD.text Object ~peak
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2025-09-30 01:31:07 - 2025-10-11 21:34:14 2460948.56328 - 2460960.39877 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
523059 2025-10-11 21:34:14 2460960.39877 18.69 ABMag Clear- LAST_LAST-Cam 400
523058 2025-09-30 01:31:07 2460948.56328 20.34 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-10-01 07:55:03 - 2025-10-01 07:55:03 2460949.8298958 - 2460949.8298958 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521730 2025-10-01 07:55:03 2460949.8298958 20.3529 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
g-ZTF P48_ZTF-Cam 2025-10-01 09:38:54 - 2025-10-01 09:38:54 2460949.9020139 - 2460949.9020139 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521731 2025-10-01 09:38:54 2460949.9020139 19.5723 0.103783 20.6641 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
cyan-ATLAS ATLAS-HKO_ATLAS-02 2025-09-30 12:12:20 - 2025-10-01 11:39:10 2460949.00856 - 2460949.98553 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521676 2025-10-01 11:39:10 2460949.98553 19.301 0.191 19.35 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
521675 2025-09-30 12:12:20 2460949.00856 19.5 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
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
272956 2025-10-12 01:08:12 LAST_Bot1 E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS) et al. LAST LAST 02:59:52.721 +23:24:33.16 2025-10-11 21:34:13.728 18.69 Clear- PSN LAST N
272255 2025-10-01 20:06:09 ALeRCE A. Munoz-Arancibia, F.E. Bauer, G. Pignata et al. ALeRCE ZTF 02:59:52.664 +23:24:32.72 2025-10-01 09:38:54.001 19.5723 g-ZTF PSN WISEA J025952.61+232431.0 ZTF25abuvora ZTF Early SN candidate (g-rise > 0.06+-0.01 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25abuvora N
272228 2025-10-01 15:30:10 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 02:59:52.660 +23:24:32.80 2025-10-01 11:39:09.792 19.301 cyan-ATLAS PSN ATLAS25mgz ATLAS 2025TNSTR3942....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
22198 2025-10-12 20:48:27 Cillian O'Donnell Cillian O'Donnell, Kate Maguire, Umut Burgaz, Christine Collins, Ravi Seth, CG Touchard-Paxton, Jacobus Terwel, Thomas Muller Bravo TCD SN Ia-91bg-like 0.041 1 TCD snid classification and redshift 2025TNSCR4091....1O
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
22198 2025-10-10 00:00:00 LT / SPRAT 1200 Cillian O'Donnell, Kate Maguire, Umut Burgaz, Christine Collins, Ravi Seth, CG Touchard-Paxton, Jacobus Terwel, Thomas Muller Br Cillian O'Donnell TCD tns_2025ziy_2025-10-10_LT_SPRAT_TCD.text Object ~peak

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 272255 of Group ZTF
Previous RA, DEC: 02:59:52.664, +23:24:32.72 (44.9694313, +23.4090876)
Updated RA, DEC: 02:59:52.664, +23:24:32.72 (44.9694313, +23.4090876)

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 272255 of Group ZTF
Previous RA, DEC: 02:59:52.660, +23:24:32.80 (44.969416, +23.409112)
Updated RA, DEC: 02:59:52.664, +23:24:32.72 (44.9694313, +23.4090876)