RA/DEC (2000)
17:07:28.129 +34:34:03.04
256.867203231 +34.5675113889
Type
SN IIn
Redshift
0.027
Discovery ReportClassification Report
Reporting Group
YSE
Discovering Data Source
Pan-STARRS
Discovery Date
2025-05-26 10:07:13.152
TNS AT
Y
Public
Y
Discovery Mag
20.37
Filter
r-P1
Reporter/s
D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello, Z. Ansari, N. Arendse, C. Gall, C. Grillo, S. H. Bruun, C. Hede, J. Hjorth, L. Izzo, H. Korhonen, S. Raimundo, D. Kodi Ramanah, A. Sarangi, R. Wojtak, H. Pfister (DARK, U Copenhagen), K. Auchettl (DARK, UC Santa Cruz, U Melbourne), K. C. Chambers, M. E. Huber, E. A. Magnier, T. J. L. de Boer, J. R. Fairlamb, C. C. Lin, R. J. Wainscoat, T. Lowe, G. Paek, A. S. B. Schultz, P. Minguez (IfA, Hawaii), A. Engel, A. Gagliano, G. Narayan, M. Soraisam (Illinois), Q. Wang (JHU), A. Rest (JHU, STScI), S. J. Smartt, K. W. Smith (Oxford / QUB), C. R. Angus (QUB), K. Alexander, P. Blanchard, L. DeMarchi, A. Hajela, W. Jacobson-Galan, R. Margutti, D. Matthews, C. Stauffer, M. Stroh (Northwestern), M. Drout (U Toronto), D. A. Coulter, G. Dimitriadis, R. J. Foley, T. Hung, C. D. Kilpatrick, C. Rojas-Bravo, M. R. Siebert (UC Santa Cruz), E. Ramirez-Ruiz (UC Santa Cruz, DARK)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025mbd - 2025-06-18 08:46:42 Lick-3m / KAST (UCSC)z=
 ▌SN_2025mbd - 2025-06-11 01:18:30 LT / SPRAT (GOTO)z=
 ▌SN_2025mbd - 2025-05-28 00:00:00 Lick-3m / KAST (UCSC)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
 ▌PS2_GPC2_r
 ▌PS2_GPC2_w
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌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
21354 2025-06-18 08:46:42 Lick-3m / KAST K. Taggart K. Taggart UCSC tns_2025mbd_2025-06-18_08-46-42.24_Lick-3m_KAST_UCSC.flm Object The recent spectrum exhibits broad H-alpha emission (FWHM 4,900 km/s), consistent with a Type IIn supernova.
21279 2025-06-11 01:18:30 LT / SPRAT Robotic GOTO tns_2025mbd_2025-06-11_01-18-30.096_LT_SPRAT_GOTO.dat Object
21171 2025-05-28 00:00:00 Lick-3m / KAST 4200 Kishore C. Patra Kishore C. Patra UCSC tns_2025mbd_2025-05-28_Lick-3m_KAST_UCSC.flm Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-05-23 01:26:28 - 2025-05-30 00:52:15 2460818.560053 - 2460825.536283 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
492816 2025-05-30 00:52:15 2460825.536283 18.6 0.09 ABMag L-GOTO GOTO-N_GOTO-2 180
492815 2025-05-23 01:26:28 2460818.560053 19.7 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
r-P1 PS2_GPC2 2025-05-26 10:07:13 - 2025-06-08 09:16:38 2460821.92168 - 2460834.88655 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
494170 2025-06-08 09:16:38 2460834.88655 19.45 0.13 20.6 ABMag r-P1 PS2_GPC2 27 Robot
491681 2025-05-26 10:07:13 2460821.92168 20.37 0.11 20.6 ABMag r-P1 PS2_GPC2 27 Robot
w-P1 PS2_GPC2 2025-05-29 10:19:13 - 2025-05-29 10:19:13 2460824.93001 - 2460824.93001 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
493289 2025-05-29 10:19:13 2460824.93001 18.85 0.03 22 ABMag w-P1 PS2_GPC2 45 Robot
r-ZTF P48_ZTF-Cam 2025-05-31 08:35:04 - 2025-05-31 08:35:04 2460826.8576852 - 2460826.8576852 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
493010 2025-05-31 08:35:04 2460826.8576852 18.2709 0.061562 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-05-26 06:53:05 - 2025-05-27 09:56:50 2460821.7868634 - 2460822.9144676 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
493009 2025-05-27 09:56:50 2460822.9144676 19.6817 0.0917972 ABMag g-ZTF P48_ZTF-Cam
493008 2025-05-26 06:53:05 2460821.7868634 20.7026 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-05-29 10:33:48 - 2025-05-29 10:33:48 2460824.94014 - 2460824.94014 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
492923 2025-05-29 10:33:48 2460824.94014 19.14 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
cyan-ATLAS ATLAS-HKO_ATLAS-02 2025-05-30 09:08:55 - 2025-05-30 09:08:55 2460825.88119 - 2460825.88119 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
492924 2025-05-30 09:08:55 2460825.88119 18.472 0.118 19.61 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
258015 2025-06-08 18:42:01 YSE_Bot1 D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al. YSE Pan-STARRS 17:07:28.129 +34:34:03.04 2025-06-08 09:16:37.920 19.45 r-P1 PSN PS25cxw Pan-STARRS N
257594 2025-06-01 21:40:18 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 17:07:28.150 +34:34:04.06 2025-05-29 10:19:12.864 18.85 w-P1 PSN PS25cxw Pan-STARRS N
257426 2025-05-31 12:10:36 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 17:07:28.150 +34:34:04.09 2025-05-27 09:56:50.000 19.6817 g-ZTF PSN ZTF25aasltmi ZTF N
257388 2025-05-30 18:35:06 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 17:07:28.152 +34:34:03.82 2025-05-30 09:08:54.816 18.472 cyan-ATLAS PSN ATLAS25ftu ATLAS N
257331 2025-05-30 08:59:17 GOTO_bot A. Kumar,D. O'Neill,K. Ackley et al. GOTO GOTO 17:07:28.153 +34:34:04.26 2025-05-30 00:52:14.592 18.6 L-GOTO Other GOTO25den GOTO N
256824 2025-05-26 15:21:58 YSE_Bot1 D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al. YSE Pan-STARRS 17:07:28.159 +34:34:04.08 2025-05-26 10:07:13.152 20.37 r-P1 PSN PS25cxw Pan-STARRS 2025TNSTR1974....1J N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21354 2025-06-18 22:37:31 Kirsty Taggart K. Taggart, R. J. Foley (UCSC) UCSC SN IIn 0.027 1 Add UCSC 2025TNSCR2282....1T
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
21354 2025-06-18 08:46:42 Lick-3m / KAST K. Taggart K. Taggart UCSC tns_2025mbd_2025-06-18_08-46-42.24_Lick-3m_KAST_UCSC.flm Object The recent spectrum exhibits broad H-alpha emission (FWHM 4,900 km/s), consistent with a Type IIn supernova.
21279 2025-06-11 08:42:46 Miika Pursiainen M. Pursiainen, D. O'Neill, J. Lyman, G. Ramsay, B. Warwick, K. Ackley, M. Dyer, F. Jiménez-Ibarra, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, K. Noysena, R. Kotak, R. Breton, L. Nuttall, E. Pallé, D. Pollacco, T. Killestein, A. Kumar on behalf of GOTO collaboration GOTO SN 0.028 1 Add GOTO Still blue and featureless. Only notable line feature is narrow Ha emission, likely arising from the host galaxy. We retain the previous "SN" classification, but note that the SN has remained featureless for two weeks. 2025TNSCR2184....1P
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
21279 2025-06-11 01:18:30 LT / SPRAT Robotic GOTO tns_2025mbd_2025-06-11_01-18-30.096_LT_SPRAT_GOTO.dat Object
21171 2025-05-28 22:15:51 Kishore C. Patra Kishore C. Patra (UCSC), Ryan J. Foley (UCSC) UCSC SN 0.028 1 Add UCSC We observed a blue, featureless continuum on UT May 28 2025 with the Kast spectrograph on the Shane telescope. 2025TNSCR2009....1P
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
21171 2025-05-28 00:00:00 Lick-3m / KAST 4200 Kishore C. Patra Kishore C. Patra UCSC tns_2025mbd_2025-05-28_Lick-3m_KAST_UCSC.flm Object

Comments

TNS
System

Sun, 06/08/2025 - 18:42

Object coordinates updated

Object coordinates updated according to AT-report 258015 of Group Pan-STARRS
Previous RA, DEC: 17:07:28.150, +34:34:04.06 (256.867293429, +34.5677956601)
Updated RA, DEC: 17:07:28.129, +34:34:03.04 (256.867203231, +34.5675113889)

TNS
System

Sun, 06/01/2025 - 21:40

Object coordinates updated

Object coordinates updated according to AT-report 257594 of Group Pan-STARRS
Previous RA, DEC: 17:07:28.159, +34:34:04.08 (256.86732902, +34.5678013735)
Updated RA, DEC: 17:07:28.150, +34:34:04.06 (256.867293429, +34.5677956601)