RA/DEC (2000)
21:10:48.254 +43:40:45.96
317.7010573 +43.679432
Type
SN IIP
Redshift
0.012523
Discovery ReportClassification Report
Reporting Group
None
Discovering Data Source
None
Discovery Date
2025-11-24 12:59:59.424
TNS AT
Y
Public
Y
Discovery Mag
18.05
Filter
Clear-
Reporter/s
Ziyang Mai, Bozhang Shi
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025aewb - 2025-12-09 18:49:14 CA-2.2m / CAFOS (CET-3PO)z=
▌Show H at z=vexp= km/s
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌Other_Other_Clear
   
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
22668 2025-12-09 18:49:14 CA-2.2m / CAFOS Samuel Góngora & Martin Blazek CET-3PO tns_2025aewb_2025-12-09_18-49-14_CA-2.2m_CAFOS_CET-3PO.txt Object The spectra of ZTF25aceicse/2025aewb were obtained on 2025-12-09T18:49:14 UT with the low-resolution CAFOS instrument mounted on the 2.2 m telescope at Calar Alto Observatory. Two 1350s observations were made with the G-200 grism. The data reduction was done using a custom developed CAFOS pipeline. We performed flux calibration using the standard star BD+28_4211.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2025-11-13 06:46:08 - 2026-01-13 03:08:39 2460992.782037 - 2461053.6310069 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
550765 2026-01-13 03:08:39 2461053.6310069 18.2787 0.171324 ABMag r-ZTF P48_ZTF-Cam
550763 2025-11-13 06:46:08 2460992.782037 19.9546 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-11-24 02:29:01 - 2025-11-24 02:29:01 2461003.6034838 - 2461003.6034838 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
550764 2025-11-24 02:29:01 2461003.6034838 18.7882 0.0958 ABMag g-ZTF P48_ZTF-Cam
Clear- Other_Other 2025-11-24 12:59:59 - 2025-12-09 11:49:46 2461004.04166 - 2461018.992889 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537094 2025-12-09 11:49:46 2461018.992889 18.1 VegaMag Clear- Other_Other 120 Sumdo Obs. C11 HD + unfiltered CMOS camera.
533906 2025-11-24 12:59:59 2461004.04166 18.05 0.1 VegaMag Clear- Other_Other 120 Sumdo Obs. 0.25-m f/4 reflector + unfiltered CMOS camera.
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
287520 2026-01-16 19:12:10 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 21:10:48.254 +43:40:45.96 2025-11-24 02:29:01.000 18.7882 g-ZTF PSN ZTF25aceicse ZTF N
279821 2025-12-09 13:08:56 Ziyang Mai Ziyang Mai,Bozhang Shi et al. 21:10:48.245 +43:40:46.00 2025-12-09 11:49:45.606 18.1 Clear- PSN 2MASX J21104814+4341173 The object still exists after 15 days with little change in brightness, so it is more likely to be a supernova (Type II). Photometric and spectroscopic follow-up of the object is encouraged. N
278307 2025-11-26 06:50:14 Ziyang Mai Ziyang Mai,Bozhang Shi et al. 21:10:48.240 +43:40:46.00 2025-11-24 12:59:59.424 18.05 Clear- PSN Possible CV in Cyg or SN in 2MASX J21104814+4341173 (29" to the N) . 2025TNSTR4722....1M N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22667 2025-12-22 10:50:13 Grace Katusiime Grace Katusiime, Nadejda Blagorodnova Mujortova CET-3PO SN IIP 0.012523 1 CET-3PO The spectrum shows very broad H-alpha emission. Spectral classification with SNID favors a Type II-P supernova at redshift z = 0.012523, with the best-matching template being SN 2017pn (epoch 24.0 days). We therefore classify 2025aewb as a Type II-P supernova. 2025TNSCR5130....1K
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
22668 2025-12-09 18:49:14 CA-2.2m / CAFOS Samuel Góngora & Martin Blazek CET-3PO tns_2025aewb_2025-12-09_18-49-14_CA-2.2m_CAFOS_CET-3PO.txt Object The spectra of ZTF25aceicse/2025aewb were obtained on 2025-12-09T18:49:14 UT with the low-resolution CAFOS instrument mounted on the 2.2 m telescope at Calar Alto Observatory. Two 1350s observations were made with the G-200 grism. The data reduction was done using a custom developed CAFOS pipeline. We performed flux calibration using the standard star BD+28_4211.

Comments

TNS
System

Fri, 01/16/2026 - 19:12

Object coordinates updated

Object coordinates updated according to AT-report 287520 of Group ZTF
Previous RA, DEC: 21:10:48.245, +43:40:46.00 (317.701021, +43.679444)
Updated RA, DEC: 21:10:48.254, +43:40:45.96 (317.7010573, +43.679432)

TNS
System

Tue, 12/09/2025 - 13:08

Object coordinates updated

Object coordinates updated according to AT-report 279821 of Group None
Previous RA, DEC: 21:10:48.240, +43:40:46.00 (317.701, +43.679444)
Updated RA, DEC: 21:10:48.245, +43:40:46.00 (317.701021, +43.679444)