RA/DEC (2000)
08:05:40.091 +06:44:57.81
121.417046474 +6.74939106864
Type
SN Ia
Redshift
0.094
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-12-12 08:53:33.999
TNS AT
Y
Public
Y
Discovery Mag
20.5053
Filter
g-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025ahcd - 2025-12-24 00:00:00 SOAR / Goodman (ZTF)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
▌Show N III at z=vexp= km/s
▌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
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌LAST_LAST-Cam_Clear
 ▌GOTO-S_GOTO-3_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_g
 ▌PS1_GPC1_w
   
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
22689 2025-12-24 00:00:00 SOAR / Goodman Jonathan Carney (UNC), , Akash Anumarlapudi (UNC), Igor Andreoni (UNC), James Freeburn (Swinn) ZTF tns_2025ahcd_2025-12-24_00-00-00_SOAR_Goodman_ZTF.ascii Object no tellcorr
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-12-23 00:54:08 - 2025-12-23 00:54:08 2461032.53759 - 2461032.53759 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
542155 2025-12-23 00:54:08 2461032.53759 19.06 0.099 19.94 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
Clear- LAST_LAST-Cam 2024-03-04 19:06:28 - 2025-12-18 22:46:16 2460374.29616 - 2461028.4488 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540565 2025-12-18 22:46:16 2461028.4488 19.47 ABMag Clear- LAST_LAST-Cam 400
540564 2024-03-04 19:06:28 2460374.29616 21.65 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2025-12-12 17:05:14 - 2025-12-12 17:05:14 2461022.211974 - 2461022.211974 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540678 2025-12-12 17:05:14 2461022.211974 20.08 0.2 ABMag L-GOTO GOTO-S_GOTO-3 180
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-12-20 06:35:04 - 2025-12-20 06:35:04 2461029.77435 - 2461029.77435 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
542154 2025-12-20 06:35:04 2461029.77435 19.01 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-12-11 05:49:33 - 2025-12-11 05:49:33 2461020.742745 - 2461020.742745 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540677 2025-12-11 05:49:33 2461020.742745 19.6 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
g-ZTF P48_ZTF-Cam 2025-12-11 09:13:51 - 2025-12-16 09:15:32 2461020.8846181 - 2461025.885787 5
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
539355 2025-12-16 09:15:32 2461025.885787 19.6194 0.142252 ABMag g-ZTF P48_ZTF-Cam
541131 2025-12-13 09:10:44 2461022.8824537 20.1491 0.189609 20.5625 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
539354 2025-12-12 08:53:34 2461021.8705324 20.5053 0.203462 ABMag g-ZTF P48_ZTF-Cam
539353 2025-12-11 09:13:51 2461020.8846181 20.1746 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
541130 2025-12-11 09:13:51 2461020.8846181 20.1746 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
w-P1 PS1_GPC1 2026-02-21 07:10:48 - 2026-02-21 07:10:48 2461092.79917 - 2461092.79917 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
593488 2026-02-21 07:10:48 2461092.79917 21.41 0.49 22 ABMag w-P1 PS1_GPC1 45 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
309395 2026-06-21 15:10:10 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 08:05:40.091 +06:44:57.81 2026-02-21 07:10:48.288 21.41 w-P1 PSN PS26cgc Pan-STARRS N
282078 2025-12-23 12:58:27 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 08:05:40.065 +06:44:57.63 2025-12-23 00:54:07.776 19.06 wide-ATLAS PSN ATLAS25qdx ATLAS N
281638 2025-12-20 19:17:10 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 08:05:40.105 +06:44:57.91 2025-12-13 09:10:44.000 20.1491 g-ZTF PSN ZTF25achiukc ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25achiukc N
281433 2025-12-19 10:42:27 GOTO_bot D. O'Neill, G. Ramsay, K. Ackley et al. GOTO GOTO 08:05:40.121 +06:44:56.94 2025-12-12 17:05:14.208 20.08 L-GOTO Other GOTO25lzb GOTO N
281378 2025-12-19 09:04:48 LAST_Bot1 E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS) et al. LAST LAST 08:05:40.085 +06:44:57.75 2025-12-18 22:46:16.320 19.47 Clear- PSN LAST N
280829 2025-12-16 10:28:38 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 08:05:40.130 +06:44:57.89 2025-12-12 08:53:33.999 20.5053 g-ZTF PSN ZTF25achiukc ZTF 2025TNSTR5004....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
22688 2025-12-26 18:15:54 Jonathan Carney Jonathan Carney (UNC), Akash Anumarlapudi (UNC), James Freeburn (Swinn), Igor Andreoni (UNC), Robert Stein (UMD), Itai Sfaradi (Berkeley) ZTF SN Ia 0.094 1 ZTF Classificaiton and redshift from SNID 2025TNSCR5180....1C
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
22689 2025-12-24 00:00:00 SOAR / Goodman Jonathan Carney (UNC), , Akash Anumarlapudi (UNC), Igor Andreoni (UNC), James Freeburn (Swinn) ZTF tns_2025ahcd_2025-12-24_00-00-00_SOAR_Goodman_ZTF.ascii Object no tellcorr

Comments

TNS
System

Sun, 06/21/2026 - 15:10

Object coordinates updated

Object coordinates updated according to AT-report 309395 of Group Pan-STARRS
Previous RA, DEC: 08:05:40.105, +06:44:57.91 (121.417103475, +6.749419975)
Updated RA, DEC: 08:05:40.091, +06:44:57.81 (121.417046474, +6.74939106864)

TNS
System

Sat, 12/20/2025 - 19:17

Object coordinates updated

Object coordinates updated according to AT-report 281638 of Group ZTF
Previous RA, DEC: 08:05:40.130, +06:44:57.89 (121.4172065, +6.7494126)
Updated RA, DEC: 08:05:40.105, +06:44:57.91 (121.417103475, +6.749419975)