RA/DEC (2000)
23:20:14.531 +33:22:41.01
350.0605474 +33.3780594
Type
SN IIn
Redshift
0.105
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-06-18 02:57:59.904
TNS AT
Y
Public
Y
Discovery Mag
18.96
Filter
L-GOTO
Reporter/s
D. O'Neill, A. Kumar, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025nzv - 2025-06-20 05:03:38 NOT / ALFOSC (GOTO)z=
 ▌SN_2025nzv - 2025-06-19 13:42:33 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

 ▌GOTO-N_GOTO-2_L
 ▌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
21366 2025-06-20 05:03:38 NOT / ALFOSC N. Pyykkinen GOTO tns_2025nzv_2025-06-20_05-03-37.997_NOT_ALFOSC_GOTO.ascii Object ALFOSC quick reduction. Spectrum shows narrow H and He lines consistent with z~0.105. Classified using template matching with SNID.
21361 2025-06-19 13:42:33 UH88 / SNIFS 1800 Jennifer Shi SCAT tns_2025nzv_2025-06-19_13-42-33_UH88_SNIFS_SCAT.dat Object The spectrum shows a blue continuum with narrow H lines. Redshift from template cross-correlation with SNID.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-06-15 03:32:57 - 2025-06-18 02:58:00 2460841.647878 - 2460844.623611 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
496223 2025-06-18 02:58:00 2460844.623611 18.96 0.11 ABMag L-GOTO GOTO-N_GOTO-2 360
496222 2025-06-15 03:32:57 2460841.647878 19 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-06-24 11:37:00 - 2025-06-24 11:37:00 2460850.9840278 - 2460850.9840278 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
497899 2025-06-24 11:37:00 2460850.9840278 19.394 0.131658 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-06-18 11:07:09 - 2025-06-18 11:07:09 2460844.9632986 - 2460844.9632986 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
497898 2025-06-18 11:07:09 2460844.9632986 19.5251 0.150973 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-06-19 11:58:32 - 2025-06-19 11:58:32 2460845.99898 - 2460845.99898 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
496966 2025-06-19 11:58:32 2460845.99898 19.2 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-06-20 11:20:55 - 2025-06-20 11:20:55 2460846.97286 - 2460846.97286 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
496967 2025-06-20 11:20:55 2460846.97286 19.138 0.18 19.33 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
259910 2025-06-24 14:51:53 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 23:20:14.531 +33:22:41.01 2025-06-18 11:07:08.999 19.5251 g-ZTF PSN ZTF25aavqzhw ZTF N
259463 2025-06-20 21:29:10 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 23:20:14.580 +33:22:41.05 2025-06-20 11:20:55.104 19.138 orange-ATLAS PSN ATLAS25gjq ATLAS N
259072 2025-06-18 17:47:13 GOTO_bot D. O'Neill, A. Kumar, K. Ackley et al. GOTO GOTO 23:20:14.578 +33:22:40.41 2025-06-18 02:57:59.904 18.96 L-GOTO Other GOTO25drz GOTO 2025TNSTR2273....1O N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21366 2025-06-20 18:37:07 David O'Neill D. O'Neill, R. Kotak, K. Ackley, M. Dyer, J. Lyman, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Ulaczyk, K. Noysena, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration GOTO SN IIn 0.105 1 GOTO Narrow lines consistent with z~0.105. Classified using SNID. We thank the observers at the NOT. 2025TNSCR2326....1O
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
21366 2025-06-20 05:03:38 NOT / ALFOSC N. Pyykkinen GOTO tns_2025nzv_2025-06-20_05-03-37.997_NOT_ALFOSC_GOTO.ascii Object ALFOSC quick reduction. Spectrum shows narrow H and He lines consistent with z~0.105. Classified using template matching with SNID.
21361 2025-06-20 01:28:39 Jennifer Shi Jennifer Shi (UoM) on behalf of the SCAT team. SCAT SN IIn 0.1057 1 SCAT 2025TNSCR2327....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
21361 2025-06-19 13:42:33 UH88 / SNIFS 1800 Jennifer Shi SCAT tns_2025nzv_2025-06-19_13-42-33_UH88_SNIFS_SCAT.dat Object The spectrum shows a blue continuum with narrow H lines. Redshift from template cross-correlation with SNID.

Comments

TNS
System

Tue, 06/24/2025 - 14:51

Object coordinates updated

Object coordinates updated according to AT-report 259910 of Group ZTF
Previous RA, DEC: 23:20:14.580, +33:22:41.05 (350.06075, +33.37807)
Updated RA, DEC: 23:20:14.531, +33:22:41.01 (350.0605474, +33.3780594)

TNS
System

Fri, 06/20/2025 - 21:29

Object coordinates updated

Object coordinates updated according to AT-report 259463 of Group ATLAS
Previous RA, DEC: 23:20:14.578, +33:22:40.41 (350.060741, +33.377893)
Updated RA, DEC: 23:20:14.580, +33:22:41.05 (350.06075, +33.37807)