RA/DEC (2000)
23:35:42.997 +47:15:18.31
353.92915424444 +47.255085944444
Type
SN Ia
Redshift
0.043
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-12-08 20:46:05.376
TNS AT
Y
Public
Y
Discovery Mag
19.413
Filter
wide-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland (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, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025agdh - 2025-12-19 02:24:41 P60 / SEDM (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
 ▌GOTO-N_GOTO-2_L
 ▌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
22634 2025-12-19 02:24:41 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025agdh_2025-12-19_02-24-40.713168_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-12-08 20:46:05 - 2025-12-08 20:46:05 2461018.36534 - 2461018.36534 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537012 2025-12-08 20:46:05 2461018.36534 19.413 0.147 20.13 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
L-GOTO GOTO-N_GOTO-2 2025-12-09 20:12:26 - 2025-12-09 20:12:26 2461019.341966 - 2461019.341966 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537161 2025-12-09 20:12:26 2461019.341966 19.3 0.12 ABMag L-GOTO GOTO-N_GOTO-2 180
L-GOTO GOTO-N_GOTO-1 2025-12-01 22:16:55 - 2025-12-01 22:16:55 2461011.428411 - 2461011.428411 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537160 2025-12-01 22:16:55 2461011.428411 19.5 ABMag L-GOTO GOTO-N_GOTO-1 360 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-12-05 03:52:17 - 2025-12-11 02:45:57 2461014.6613079 - 2461020.6152431 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540787 2025-12-11 02:45:57 2461020.6152431 18.7255 0.068936 20.318 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
540786 2025-12-07 03:57:15 2461016.6647569 19.31 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
537355 2025-12-05 03:52:17 2461014.6613079 19.7823 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-12-07 02:22:44 - 2025-12-11 03:52:17 2461016.5991204 - 2461020.6613079 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537357 2025-12-11 03:52:17 2461020.6613079 19.0687 0.111937 ABMag g-ZTF P48_ZTF-Cam
537356 2025-12-07 02:22:44 2461016.5991204 20.0242 0.175698 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-12-07 09:35:50 - 2025-12-07 09:35:50 2461016.89988 - 2461016.89988 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
537011 2025-12-07 09:35:50 2461016.89988 17.52 ABMag orange-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
281484 2025-12-19 19:16:38 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 23:35:42.997 +47:15:18.31 2025-12-11 02:45:57.004 18.7255 r-ZTF PSN ZTF25acgnldr ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25acgnldr N
279951 2025-12-11 04:59:07 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 23:35:43.007 +47:15:18.36 2025-12-07 02:22:44.002 20.0242 g-ZTF PSN ZTF25acgnldr ZTF N
279854 2025-12-09 22:08:44 GOTO_bot M. Kennedy, K. Ackley, M. Dyer et al. GOTO GOTO 23:35:43.050 +47:15:18.44 2025-12-09 20:12:26.208 19.3 L-GOTO Other GOTO25ljq GOTO N
279780 2025-12-09 09:24:23 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 23:35:43.026 +47:15:18.25 2025-12-08 20:46:05.376 19.413 wide-ATLAS PSN ATLAS25pjl ATLAS 2025TNSTR4890....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
22633 2025-12-19 03:18:23 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 0.043 1 ZTF 2025TNSCR5075....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
22634 2025-12-19 02:24:41 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025agdh_2025-12-19_02-24-40.713168_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Fri, 12/19/2025 - 19:16

Object coordinates updated

Object coordinates updated according to AT-report 281484 of Group ZTF
Previous RA, DEC: 23:35:43.007, +47:15:18.36 (353.929195, +47.255099)
Updated RA, DEC: 23:35:42.997, +47:15:18.31 (353.92915424444, +47.255085944444)

TNS
System

Thu, 12/11/2025 - 04:59

Object coordinates updated

Object coordinates updated according to AT-report 279951 of Group ZTF
Previous RA, DEC: 23:35:43.026, +47:15:18.25 (353.929273333, +47.25507)
Updated RA, DEC: 23:35:43.007, +47:15:18.36 (353.929195, +47.255099)