RA/DEC (2000)
07:52:48.993 +69:00:14.76
118.204136127 +69.0040988267
Type
SN Ic
Redshift
0.01298
Discovery ReportClassification Report
Related AstroNotes: DRAFT-2349, 2025-332
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-10-20 09:20:43.995
TNS AT
Y
Public
Y
Discovery Mag
19.8061
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_2025abdd - 2025-11-21 00:00:00 FLWO-1.5m / FAST (VHU-TDA)z=
 ▌SN_2025abdd - 2025-11-02 01:20:21 LT / SPRAT (OxQUB)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

 ▌LAST_LAST-Cam_Clear
 ▌GOTO-N_GOTO-2_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-MLO_ATLAS-01_cyan
 ▌PS1_GPC1_i
   
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
22485 2025-11-21 00:00:00 FLWO-1.5m / FAST 1500 Gilbert Esquerdo, Perry Berlind S. Karthik Yadavalli, Harsh Kumar VHU-TDA tns_2025abdd_2025-11-21_FLWO-1.5m_FAST_VHU-TDA.ascii Object
22354 2025-11-02 01:20:21 LT / SPRAT 900 Robotic OxQUB tns_2025abdd_2025-11-02_01-20-21.363_LT_SPRAT_OxQUB.txt Object quick-look extraction from LT pipeline
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2024-03-03 19:19:46 - 2025-10-31 01:02:52 2460373.30539 - 2460979.54366 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
527962 2025-10-31 01:02:52 2460979.54366 16.76 ABMag Clear- LAST_LAST-Cam 400
527961 2024-03-03 19:19:46 2460373.30539 21.27 ABMag Clear- LAST_LAST-Cam 2360 [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-10-15 04:04:01 - 2025-10-30 06:08:48 2460963.669458 - 2460978.756111 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
527762 2025-10-30 06:08:48 2460978.756111 16.53 0.01 ABMag L-GOTO GOTO-N_GOTO-2 360
527761 2025-10-15 04:04:01 2460963.669458 19.3 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-10-19 11:30:39 - 2025-10-19 11:30:39 2460967.9796181 - 2460967.9796181 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
525483 2025-10-19 11:30:39 2460967.9796181 20.6933 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-10-18 08:13:53 - 2025-10-21 11:20:08 2460966.8429745 - 2460969.9723148 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
525485 2025-10-21 11:20:08 2460969.9723148 18.8912 0.091851 ABMag g-ZTF P48_ZTF-Cam
525484 2025-10-20 09:20:44 2460968.8893981 19.8061 0.156157 ABMag g-ZTF P48_ZTF-Cam
527656 2025-10-20 09:20:44 2460968.8893981 19.8061 0.156157 20.4418 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
527655 2025-10-18 08:13:53 2460966.8429745 19.9907 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-10-15 14:01:13 - 2025-10-15 14:01:13 2460964.08418 - 2460964.08418 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
525582 2025-10-15 14:01:13 2460964.08418 19.23 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
cyan-ATLAS ATLAS-MLO_ATLAS-01 2025-10-21 13:39:06 - 2025-10-21 13:39:06 2460970.06882 - 2460970.06882 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
525583 2025-10-21 13:39:06 2460970.06882 18.939 0.143 19.36 ABMag cyan-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
i-P1 PS1_GPC1 2026-02-02 09:36:18 - 2026-02-02 09:36:18 2461073.90021 - 2461073.90021 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
555790 2026-02-02 09:36:18 2461073.90021 18.43 0.08 20.7 ABMag i-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
289938 2026-02-04 16:50:23 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 07:52:48.993 +69:00:14.76 2026-02-02 09:36:18.144 18.43 i-P1 PSN PS26rx Pan-STARRS N
275291 2025-10-31 02:13:57 LAST_Bot1 R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS) et al. LAST LAST 07:52:48.935 +69:00:15.35 2025-10-31 01:02:52.224 16.76 Clear- PSN LAST N
275204 2025-10-30 10:14:41 GOTO_bot G. Ramsay, D. O'Neill, K. Ackley et al. GOTO GOTO 07:52:49.002 +69:00:14.87 2025-10-30 06:08:47.904 16.53 L-GOTO Other GOTO25jhq GOTO N
275154 2025-10-29 19:15:06 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 07:52:48.983 +69:00:14.78 2025-10-20 09:20:43.996 19.8061 g-ZTF PSN ZTF25abyevmr ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abyevmr N
274231 2025-10-21 15:24:18 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 07:52:48.991 +69:00:14.82 2025-10-21 13:39:06.048 18.939 cyan-ATLAS PSN ATLAS25nbj ATLAS N
274190 2025-10-21 12:37:55 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 07:52:48.986 +69:00:14.79 2025-10-20 09:20:43.995 19.8061 g-ZTF PSN ZTF25abyevmr ZTF 2025TNSTR4230....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
22484 2025-12-02 01:18:29 VHU-TDA Anya Nugent, Yize Dong, V. Ashley Villar, S. Karthik Yadavalli, Alex Gagliano, Kaylee de Soto, Danielle Frostig, Harsh Kumar, Peter Blanchard VHU-TDA SN Ic 0.01298 1 1 VHU-TDA Redshift from host lines 2025TNSCR4809....1N
Related files
File Comments Last Modified (UT) Modified By
tns_2025abdd_atrep_22484_VHU-TDA.png SN2004aw best match from SNID-SAGE. 2025-12-02 01:18:31 VHU-TDA
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
22485 2025-11-21 00:00:00 FLWO-1.5m / FAST 1500 Gilbert Esquerdo, Perry Berlind S. Karthik Yadavalli, Harsh Kumar VHU-TDA tns_2025abdd_2025-11-21_FLWO-1.5m_FAST_VHU-TDA.ascii Object
22353 2025-11-04 06:52:50 Shubham Srivastav S. Srivastav (Oxford), M. Fulton, M. Nicholl, C. R. Angus, K. W. Smith, D. R. Young, A. Aamer, D. Magill, T. Moore, X. Sheng, S. A. Sim (QUB), S. J. Smartt (Oxford/QUB), J. H. Gillanders, H. F. Stevance (Oxford), T.-W. Chen (NCU) OxQUB SN Ic 0.01 1 1 OxQUB Low S/N spectrum shows good matches with normal Ic supernovae around peak (from snid-sage). No available host redshift, we tentatively assign z = 0.01 based on spectral matches and peak luminosity of around -17 at this distance. 2025TNSCR4440....1S
Related files
File Comments Last Modified (UT) Modified By
tns_2025abdd_atrep_22353_OxQUB.png Match with SN Ic obtained from SNID-SAGE. 2025-11-04 06:52:50 Shubham Srivastav
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
22354 2025-11-02 01:20:21 LT / SPRAT 900 Robotic OxQUB tns_2025abdd_2025-11-02_01-20-21.363_LT_SPRAT_OxQUB.txt Object quick-look extraction from LT pipeline

Comments

TNS
System

Wed, 02/04/2026 - 16:50

Object coordinates updated

Object coordinates updated according to AT-report 289938 of Group Pan-STARRS
Previous RA, DEC: 07:52:48.983, +69:00:14.78 (118.2040973625, +69.0041059875)
Updated RA, DEC: 07:52:48.993, +69:00:14.76 (118.204136127, +69.0040988267)

TNS
System

Wed, 10/29/2025 - 19:15

Object coordinates updated

Object coordinates updated according to AT-report 275154 of Group ZTF
Previous RA, DEC: 07:52:48.986, +69:00:14.79 (118.2041097, +69.0041088)
Updated RA, DEC: 07:52:48.983, +69:00:14.78 (118.2040973625, +69.0041059875)