RA/DEC (2000)
08:07:34.171 +47:56:36.50
121.8923788 +47.9434724
Type
SLSN-I
Redshift
0.135
Discovery ReportClassification Report
Related AstroNotes: 2025-335
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-11-25 12:38:06.144
TNS AT
Y
Public
Y
Discovery Mag
18.63
Filter
cyan-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_2025aeuq - 2025-12-14 00:00:00 UH88 / SNIFS (SCAT)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-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_cyan
   
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
22590 2025-12-14 00:00:00 UH88 / SNIFS C. Angus SCAT tns_2025aeuq_2025-12-14_UH88_SNIFS_SCAT.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-11-24 04:06:56 - 2025-11-24 04:06:56 2461003.67148 - 2461003.67148 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
533732 2025-11-24 04:06:56 2461003.67148 18.28 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
Clear- LAST_LAST-Cam 2025-11-27 23:02:57 - 2025-11-28 00:04:59 2461007.46038 - 2461007.50346 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
534339 2025-11-28 00:04:59 2461007.50346 19.32 ABMag Clear- LAST_LAST-Cam 400
534338 2025-11-27 23:02:57 2461007.46038 20.45 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-11-06 02:32:26 - 2025-11-29 00:08:16 2460985.60586 - 2461008.505739 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
534741 2025-11-29 00:08:16 2461008.505739 18.79 0.08 ABMag L-GOTO GOTO-N_GOTO-1 360
534740 2025-11-06 02:32:26 2460985.60586 19.1 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-11-10 10:39:07 - 2025-11-10 10:39:07 2460989.943831 - 2460989.943831 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
539266 2025-11-10 10:39:07 2460989.943831 19.9776 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-11-11 10:39:01 - 2025-12-15 10:40:52 2460990.9437616 - 2461024.9450463 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
539268 2025-12-15 10:40:52 2461024.9450463 18.549 0.0662789 ABMag g-ZTF P48_ZTF-Cam
539267 2025-11-11 10:39:01 2460990.9437616 20.0926 0.159574 ABMag g-ZTF P48_ZTF-Cam
cyan-ATLAS ATLAS-HKO_ATLAS-02 2025-11-25 12:38:06 - 2025-11-25 12:38:06 2461005.02646 - 2461005.02646 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
533733 2025-11-25 12:38:06 2461005.02646 18.63 0.116 19.56 ABMag cyan-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
280792 2025-12-15 20:20:39 Fritz Jacob Wise (LJMU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 08:07:34.171 +47:56:36.50 2025-11-11 10:39:01.002 20.0926 g-ZTF PSN ZTF25aceeppc ZTF N
278685 2025-11-29 13:44:28 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 08:07:34.158 +47:56:37.00 2025-11-29 00:08:15.936 18.79 L-GOTO Other GOTO25kqx GOTO N
278516 2025-11-28 05:16:31 LAST_Bot1 E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al. LAST LAST 08:07:34.167 +47:56:36.51 2025-11-28 00:04:58.944 19.32 Clear- PSN LAST N
278237 2025-11-25 17:12:44 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 08:07:34.226 +47:56:36.40 2025-11-25 12:38:06.144 18.63 cyan-ATLAS PSN ATLAS25ovz ATLAS 2025TNSTR4703....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
22589 2025-12-14 15:21:48 Charlotte Angus C. Angus (QUB) on behalf of SCAT SCAT SLSN-I 0.135 1 SCAT Spectrum taken with UH88/SNIFS on 14/12/2025. Template matches to SLSNe-I (PTF12dam, SN2017gci), although we note the presence of a weak P-Cygni H-alpha profile. Redshift measured from narrow host galaxy H-alpha emission in the spectrum. Classification was done using SNID and superfit. 2025TNSCR4980....1A
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
22590 2025-12-14 00:00:00 UH88 / SNIFS C. Angus SCAT tns_2025aeuq_2025-12-14_UH88_SNIFS_SCAT.dat Object

Comments

TNS
System

Mon, 12/15/2025 - 20:20

Object coordinates updated

Object coordinates updated according to AT-report 280792 of Group ZTF
Previous RA, DEC: 08:07:34.226, +47:56:36.40 (121.892608333, +47.9434433333)
Updated RA, DEC: 08:07:34.171, +47:56:36.50 (121.8923788, +47.9434724)