RA/DEC (2000)
22:18:57.952 +13:24:07.08
334.741467825 +13.401966625
Type
SN IIn
Redshift
0.129
Discovery ReportClassification Report
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2025-07-22 08:48:39.004
TNS AT
Y
Public
Y
Host Name
SDSS J221857.92+132407.0
Discovery Mag
20.1165
Filter
g-ZTF
Reporter/s
A. Munoz-Arancibia, F.E. Bauer, G. Pignata, F. Forster, A. Mourao, S. Jurado, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, F. Andrades, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025rwm - 2025-08-18 11:16:40 Lick-3m / KAST (ZTF)z=
 ▌SN_2025rwm - 2025-08-15 05:56:06 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

 ▌LAST_LAST-Cam_Clear
 ▌GOTO-N_GOTO-1_L
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌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
21884 2025-08-18 11:16:40 Lick-3m / KAST Zoë McGrath (LJMU), Aleksandra Bochenek (LJMU) Zoë McGrath (LJMU), Jacob Wise (LJMU), Aleksandra Bochenek (LJMU) ZTF tns_2025rwm_2025-08-18_11-16-40_Lick-3m_KAST_ZTF.txt Object
21822 2025-08-15 05:56:06 P60 / SEDM 2700 SEDmRobot ZTF tns_2025rwm_2025-08-15_05-56-06.047220_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2025-09-02 19:37:32 - 2025-09-16 21:25:53 2460921.31773 - 2460935.39298 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
517895 2025-09-16 21:25:53 2460935.39298 18.98 ABMag Clear- LAST_LAST-Cam 400
517894 2025-09-02 19:37:32 2460921.31773 20.35 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-07-22 05:18:09 - 2025-07-26 02:58:56 2460878.720938 - 2460882.624262 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505812 2025-07-26 02:58:56 2460882.624262 19.49 0.19 ABMag L-GOTO GOTO-N_GOTO-1 180
505811 2025-07-22 05:18:09 2460878.720938 19.3 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-08-06 03:43:09 - 2025-08-06 03:43:09 2460893.6549653 - 2460893.6549653 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507752 2025-08-06 03:43:09 2460893.6549653 18.67 0.1 19.9 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-07-26 05:28:16 - 2025-07-26 05:28:16 2460882.727963 - 2460882.727963 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507751 2025-07-26 05:28:16 2460882.727963 20.17 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-07-20 09:13:11 - 2025-07-22 09:53:14 2460876.8841551 - 2460878.9119676 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504248 2025-07-22 09:53:14 2460878.9119676 20.251 0.153124 20.7753 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
504246 2025-07-20 09:13:11 2460876.8841551 20.674 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
g-ZTF P48_ZTF-Cam 2025-07-20 07:54:13 - 2025-07-22 08:48:39 2460876.8293171 - 2460878.8671181 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504247 2025-07-22 08:48:39 2460878.8671181 20.1165 0.185321 20.7692 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
505758 2025-07-22 08:48:39 2460878.8671181 20.1165 0.185321 20.7692 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
505757 2025-07-20 07:54:13 2460876.8293171 20.641 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-07-25 10:29:19 - 2025-07-25 10:29:19 2460881.93703 - 2460881.93703 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505438 2025-07-25 10:29:19 2460881.93703 19.64 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-07-26 10:04:31 - 2025-07-26 10:04:31 2460882.9198 - 2460882.9198 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505439 2025-07-26 10:04:31 2460882.9198 19.441 0.194 19.56 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
270384 2025-09-17 02:51:54 LAST_Bot1 R. Konno (WIS),E. A. Zimmerman (WIS),A. Horowicz (WIS) et al. LAST LAST 22:18:57.982 +13:24:06.64 2025-09-16 21:25:53.472 18.98 Clear- PSN LAST N
265208 2025-08-07 09:30:03 BlackGEM_Bot1 J. A. Paice,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 22:18:57.932 +13:24:06.99 2025-08-06 03:43:09.000 18.67 BG-q-BlackGem 1 PSN BGEM J221857.93+132406.9 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2025rwm_atrep_265208_BlackGEM.pdf Finding Chart 2025-08-07 09:30:05 BlackGEM_Bot1
264186 2025-07-29 07:16:24 GOTO_bot A. Kumar,G. Ramsay,K. Ackley et al. GOTO GOTO 22:18:57.993 +13:24:07.10 2025-07-26 02:58:56.064 19.49 L-GOTO Other GOTO25fmu GOTO N
264166 2025-07-28 18:18:24 Fink Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al. Fink ZTF 22:18:57.952 +13:24:07.08 2025-07-22 08:48:39.004 20.1165 g-ZTF PSN ZTF25abcznka ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abcznka N
263980 2025-07-27 10:36:31 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 22:18:57.949 +13:24:06.89 2025-07-26 10:04:30.720 19.441 orange-ATLAS PSN ATLAS25ihq ATLAS N
263435 2025-07-22 16:26:11 ALeRCE A. Munoz-Arancibia,F.E. Bauer,G. Pignata et al. ALeRCE ZTF 22:18:57.957 +13:24:07.12 2025-07-22 08:48:39.004 20.1165 g-ZTF PSN SDSS J221857.92+132407.0 ZTF25abcznka ZTF Early SN candidate (g-rise > 0.26+-0.09 mag/day, r-rise > 0.21+-0.08 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25abcznka 2025TNSTR2820....1M N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21884 2025-08-27 12:01:48 Aleksandra Bochenek Zoë McGrath (LJMU), Jacob Wise (LJMU), Aleksandra Bochenek (LJMU), Daniel Perley (LJMU), R. Michael Rich (UCLA) ZTF SN IIn 0.129 1 ZTF IIn at z = 0.129. Broad hydrogen emission refines it to a IIn rather than generic SLSN-II. 2025TNSCR3408....1M
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
21884 2025-08-18 11:16:40 Lick-3m / KAST Zoë McGrath (LJMU), Aleksandra Bochenek (LJMU) Zoë McGrath (LJMU), Jacob Wise (LJMU), Aleksandra Bochenek (LJMU) ZTF tns_2025rwm_2025-08-18_11-16-40_Lick-3m_KAST_ZTF.txt Object
21822 2025-08-18 20:13:30 ZTF_Bot1 J. Sollerman, A. Mehla, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SLSN-II 0.129 1 ZTF 2025TNSCR3268....1S
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
21822 2025-08-15 05:56:06 P60 / SEDM 2700 SEDmRobot ZTF tns_2025rwm_2025-08-15_05-56-06.047220_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Mon, 07/28/2025 - 18:18

Object coordinates updated

Object coordinates updated according to AT-report 264166 of Group ZTF
Previous RA, DEC: 22:18:57.957, +13:24:07.12 (334.74148929236, +13.401978898908)
Updated RA, DEC: 22:18:57.952, +13:24:07.08 (334.741467825, +13.401966625)