RA/DEC (2000)
14:35:00.212 +00:59:10.43
218.7508816 +0.9862294
Type
SN Ia
Redshift
0.015
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-12-20 12:06:08.003
TNS AT
Y
Public
Y
Discovery Mag
14.9301
Filter
g-ZTF
Reporter/s
Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025ahsa - 2025-12-21 12:12:13 P60 / SEDM (ZTF)z=
 ▌SN_2025ahsa - 2025-12-21 04:53:00 BL41 / FOSC-E5535 (None)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
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▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
▌Show [O II] at z=vexp= km/s
▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
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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

 ▌WFST_WFST-WFC_g
 ▌ATLAS-STH_ATLAS-03_orange
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_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
22659 2025-12-21 12:12:13 P60 / SEDM 2400 SEDmRobot auto ZTF tns_2025ahsa_2025-12-21_12-12-13.021389_P60_SEDM_ZTF.ascii Object
22655 2025-12-21 04:53:00 BL41 / FOSC-E5535 2700 Claudio Balcon Claudio Balcon None tns_2025ahsa_2025-12-21_04-53-00_BL41_FOSC-E5535_None.dat tns_2025ahsa_2025-12-21_04-53-00_BL41_FOSC-E5535_None.fit Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-WFST WFST_WFST-WFC 2026-01-02 22:03:22 - 2026-01-02 22:03:22 2461043.419 - 2461043.419 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
547252 2026-01-02 22:03:22 2461043.419 14.91 0 ABMag g-WFST WFST_WFST-WFC 60
orange-ATLAS ATLAS-STH_ATLAS-03 2025-09-09 17:50:15 - 2025-09-09 17:50:15 2460928.24323 - 2460928.24323 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
543466 2025-09-09 17:50:15 2460928.24323 18.88 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-08-19 21:00:45 - 2026-01-09 06:40:16 2460907.375517 - 2461049.777958 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
547984 2026-01-09 06:40:16 2461049.777958 15.36 0.01 ABMag L-GOTO GOTO-N_GOTO-1 180
547983 2025-08-19 21:00:45 2460907.375517 19.2 ABMag L-GOTO GOTO-N_GOTO-1 360 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-12-08 13:35:38 - 2025-12-20 13:08:23 2461018.066412 - 2461030.0474884 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
541069 2025-12-20 13:08:23 2461030.0474884 15.056 0.0357968 ABMag r-ZTF P48_ZTF-Cam
541067 2025-12-08 13:35:38 2461018.066412 18.9826 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-12-20 12:06:08 - 2025-12-20 12:06:08 2461030.0042593 - 2461030.0042593 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
541068 2025-12-20 12:06:08 2461030.0042593 14.9301 0.0325299 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-12-27 15:25:11 - 2025-12-27 15:25:11 2461037.14249 - 2461037.14249 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
543467 2025-12-27 15:25:11 2461037.14249 15.063 0.017 19.25 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 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
286208 2026-01-09 17:46:48 GOTO_bot G. Ramsay,D. O'Neill,K. Ackley et al. GOTO GOTO 14:35:00.220 +00:59:10.41 2026-01-09 06:40:15.744 15.36 L-GOTO Other GOTO26br GOTO N
285862 2026-01-07 13:06:29 WFST_SN Zelin Xu,Dezheng Meng,Ji-an Jiang et al. WFST WFST 14:35:00.210 +00:59:10.35 2026-01-02 22:03:21.600 14.91 g-WFST PSN WFST260102rwhg WFST N
282580 2025-12-27 18:21:48 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 14:35:00.216 +00:59:10.35 2025-12-27 15:25:11.136 15.063 orange-ATLAS PSN ATLAS25qjm ATLAS N
281610 2025-12-20 14:05:35 BTSbot_bot Nabeel Rehemtulla (CIERA,NU),Wynn Jacobson-Galán (Caltech) et al. ZTF ZTF 14:35:00.212 +00:59:10.43 2025-12-20 12:06:08.003 14.9301 g-ZTF PSN ZTF25acjpvvr ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). 2025TNSTR5093....1R N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22658 2025-12-21 13:01:36 ZTF_Bot1 C. Fremling, D. Neill, Y. Sharma on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore ZTF SN Ia 0.015 1 ZTF 2025TNSCR5112....1F
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
22659 2025-12-21 12:12:13 P60 / SEDM 2400 SEDmRobot auto ZTF tns_2025ahsa_2025-12-21_12-12-13.021389_P60_SEDM_ZTF.ascii Object
22654 2025-12-21 05:25:30 Claudio Balcon Claudio Balcon (Belluno A.O. ISSP) None SN Ia 0.015 1 GELATO Harutyunyan et al., 2008, A&A, 488, 383 (gelato@tng.iac.es) suggests that this spectrum resembles that of a type Ia supernova. The redshift has been deduced from the SN spectral fitting. 2025TNSCR5109....1B
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
22655 2025-12-21 04:53:00 BL41 / FOSC-E5535 2700 Claudio Balcon Claudio Balcon None tns_2025ahsa_2025-12-21_04-53-00_BL41_FOSC-E5535_None.dat tns_2025ahsa_2025-12-21_04-53-00_BL41_FOSC-E5535_None.fit Object

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