RA/DEC (2000)
02:46:27.895 +03:36:33.93
41.6162295306 +3.6094237648
Type
SN II
Redshift
0.023
Discovery ReportClassification Report
Reporting Group
LAST
Discovering Data Source
LAST
Discovery Date
2025-09-24 22:26:00.672
TNS AT
Y
Public
Y
Discovery Mag
19.55
Filter
Clear-
Reporter/s
E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS), S. Garrappa (WIS), S. Ben-Ami (WIS), D. Polishook (WIS), O. Yaron (WIS), P. Chen (WIS), A. Krassilchtchikov (WIS), Y. M. Shani (WIS), E. Segre (WIS), A. Gal-Yam (WIS), S. Spitzer (WIS), and K. Rybicki (WIS) on behalf of the LAST Collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025ymh - 2025-09-28 16:48:00 ANU-2.3m / WiFeS (DEBASS)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-S_GOTO-3_L
 ▌PS2_GPC2_w
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_orange
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌PS1_GPC1_w
   
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
22118 2025-09-28 16:48:00 ANU-2.3m / WiFeS 1200 Robotic K. Auchettl DEBASS tns_2025ymh_2025-09-28.7_ANU-2.3m_WiFeS_DEBASS.dat tns_2025ymh_2025-09-28.7_ANU-2.3m_WiFeS_DEBASS.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2025-09-02 00:10:32 - 2025-09-24 22:26:01 2460920.50731 - 2460943.43473 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519817 2025-09-24 22:26:01 2460943.43473 19.55 ABMag Clear- LAST_LAST-Cam 400
519816 2025-09-02 00:10:32 2460920.50731 20.69 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2025-09-23 15:50:02 - 2025-09-23 15:50:02 2460942.159738 - 2460942.159738 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519917 2025-09-23 15:50:02 2460942.159738 19.87 0.21 ABMag L-GOTO GOTO-S_GOTO-3 180
w-P1 PS2_GPC2 2025-11-10 09:45:32 - 2025-11-10 09:45:32 2460989.90662 - 2460989.90662 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540272 2025-11-10 09:45:32 2460989.90662 19.05 0.03 22 ABMag w-P1 PS2_GPC2 45 Robot
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-09-27 06:16:33 - 2025-09-27 06:16:33 2460945.76149 - 2460945.76149 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520428 2025-09-27 06:16:33 2460945.76149 18.527 0.132 19.03 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2025-09-24 22:38:59 - 2025-09-24 22:38:59 2460943.44374 - 2460943.44374 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520427 2025-09-24 22:38:59 2460943.44374 15.72 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-09-18 03:51:25 - 2025-09-18 03:51:25 2460936.660712 - 2460936.660712 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519916 2025-09-18 03:51:25 2460936.660712 19.6 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-09-21 09:12:02 - 2025-10-04 08:10:53 2460939.8833565 - 2460952.8408912 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
522218 2025-10-04 08:10:53 2460952.8408912 18.3192 0.0664 ABMag r-ZTF P48_ZTF-Cam
522217 2025-09-24 08:07:55 2460942.838831 19.9568 0.134361 ABMag r-ZTF P48_ZTF-Cam
522216 2025-09-21 09:12:02 2460939.8833565 20.5817 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
w-P1 PS1_GPC1 2025-09-28 11:08:16 - 2025-09-28 11:08:16 2460946.96407 - 2460946.96407 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
522310 2025-09-28 11:08:16 2460946.96407 18.62 0.03 22 ABMag w-P1 PS1_GPC1 45 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
281238 2025-12-18 14:40:59 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 02:46:27.895 +03:36:33.93 2025-11-10 09:45:31.968 19.05 w-P1 PSN PS25hti Pan-STARRS N
272523 2025-10-05 08:34:40 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 02:46:27.895 +03:36:33.95 2025-09-28 11:08:15.648 18.62 w-P1 PSN PS25hti Pan-STARRS N
272477 2025-10-04 11:37:16 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 02:46:27.889 +03:36:33.66 2025-09-24 08:07:54.998 19.9568 r-ZTF PSN ZTF25abtfmmv ZTF N
271526 2025-09-27 13:25:52 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 02:46:27.870 +03:36:34.51 2025-09-27 06:16:32.736 18.527 orange-ATLAS PSN ATLAS25max ATLAS N
271292 2025-09-25 10:17:21 GOTO_bot S. Belkin, D. O'Neill, K. Ackley et al. GOTO GOTO 02:46:27.891 +03:36:34.15 2025-09-23 15:50:01.536 19.87 L-GOTO Other GOTO25hqd GOTO N
271252 2025-09-25 03:57:51 LAST_Bot1 E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS) et al. LAST LAST 02:46:27.853 +03:36:34.80 2025-09-24 22:26:00.672 19.55 Clear- PSN LAST 2025TNSTR3859....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
22118 2025-09-29 23:32:29 Chris Lidman C. Lidman (ANU), K. Auchettl (University of Melbourne/UCSC), D. Brout (Boston University), D. Cao (ANU), B. Martin (ANU), L. Rauf (ANU), B. P. Schmidt (ANU), and B. E. Tucker (ANU) DEBASS SN II 0.023 1 DEBASS Classified with Superfit 2025TNSCR3915....1L
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
22118 2025-09-28 16:48:00 ANU-2.3m / WiFeS 1200 Robotic K. Auchettl DEBASS tns_2025ymh_2025-09-28.7_ANU-2.3m_WiFeS_DEBASS.dat tns_2025ymh_2025-09-28.7_ANU-2.3m_WiFeS_DEBASS.fits Object

Comments

TNS
System

Thu, 12/18/2025 - 14:40

Object coordinates updated

Object coordinates updated according to AT-report 281238 of Group Pan-STARRS
Previous RA, DEC: 02:46:27.895, +03:36:33.95 (41.6162282847, +3.60943123324)
Updated RA, DEC: 02:46:27.895, +03:36:33.93 (41.6162295306, +3.6094237648)

TNS
System

Sun, 10/05/2025 - 08:34

Object coordinates updated

Object coordinates updated according to AT-report 272523 of Group Pan-STARRS
Previous RA, DEC: 02:46:27.889, +03:36:33.66 (41.6162028, +3.6093487)
Updated RA, DEC: 02:46:27.895, +03:36:33.95 (41.6162282847, +3.60943123324)

TNS
System

Sat, 10/04/2025 - 11:37

Object coordinates updated

Object coordinates updated according to AT-report 272477 of Group ZTF
Previous RA, DEC: 02:46:27.870, +03:36:34.51 (41.616125, +3.60958666667)
Updated RA, DEC: 02:46:27.889, +03:36:33.66 (41.6162028, +3.6093487)

TNS
System

Sat, 09/27/2025 - 13:25

Object coordinates updated

Object coordinates updated according to AT-report 271526 of Group ATLAS
Previous RA, DEC: 02:46:27.891, +03:36:34.15 (41.616212, +3.609486)
Updated RA, DEC: 02:46:27.870, +03:36:34.51 (41.616125, +3.60958666667)

TNS
System

Thu, 09/25/2025 - 10:17

Object coordinates updated

Object coordinates updated according to AT-report 271292 of Group GOTO
Previous RA, DEC: 02:46:27.853, +03:36:34.80 (41.61605435379, +3.6096665290558)
Updated RA, DEC: 02:46:27.891, +03:36:34.15 (41.616212, +3.609486)