RA/DEC (2000)
12:29:48.488 +27:14:10.24
187.45203169197 +27.236177218742
Type
SN II
Redshift
0.02466
Related AstroNotes: 2025-178
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-06-07 07:37:32.736
TNS AT
Y
Public
Y
Discovery Mag
18.362
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), 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 (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)

Spectra

 SN_2025nat - 2025-06-08 07:29:44 FTN / FLOYDS-N (Global SN Project)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
 BG3_BlackGEM-Cam3_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
21261 2025-06-08 07:29:44 FTN / FLOYDS-N 3600 LCO Joseph Farah Global SN Project tns_2025nat_2025-06-08_07-29-44_FTN_FLOYDS-N_Global_SN_Project.ascii tns_2025nat_2025-06-08_07-29-44_FTN_FLOYDS-N_Global_SN_Project.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-06-04 21:46:30 - 2025-06-13 22:38:48 2460831.40729 - 2460840.443609 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
495018 2025-06-13 22:38:48 2460840.443609 17.58 0.04 ABMag L-GOTO GOTO-N_GOTO-2 180
495017 2025-06-04 21:46:30 2460831.40729 19.1 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-05-20 00:56:05 - 2025-06-23 23:22:07 2460815.5389468 - 2460850.4736921 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
497781 2025-06-23 23:22:07 2460850.4736921 17.71 0.05 20.58 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic
497780 2025-05-20 00:56:05 2460815.5389468 20.68 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-06-11 05:40:39 - 2025-06-16 04:45:26 2460837.7365625 - 2460842.6982176 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
497106 2025-06-16 04:45:26 2460842.6982176 17.6031 0.0384876 20.4075 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
494953 2025-06-11 05:40:39 2460837.7365625 17.6737 0.025333 ABMag r-ZTF P48_ZTF-Cam
497105 2025-06-11 05:40:39 2460837.7365625 19.6289 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
g-ZTF P48_ZTF-Cam 2025-06-02 07:19:08 - 2025-06-20 06:05:00 2460828.8049537 - 2460846.7534722 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
497108 2025-06-20 06:05:00 2460846.7534722 17.6985 0.0471548 20.0622 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
497107 2025-06-16 05:27:37 2460842.7275116 17.6334 0.0465624 20.4037 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
494952 2025-06-05 05:07:17 2460831.7133912 19.7042 0.144177 ABMag g-ZTF P48_ZTF-Cam
494951 2025-06-02 07:19:08 2460828.8049537 19.4983 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-06-05 08:17:47 - 2025-06-05 08:17:47 2460831.84568 - 2460831.84568 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
494055 2025-06-05 08:17:47 2460831.84568 18.78 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-06-07 07:37:33 - 2025-06-07 07:37:33 2460833.81774 - 2460833.81774 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
494056 2025-06-07 07:37:33 2460833.81774 18.362 0.117 19 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
259855 2025-06-24 06:52:02 BlackGEM_Bot1 G. Ramsay,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 12:29:48.457 +27:14:10.07 2025-06-23 23:22:07.000 17.71 BG-q-BlackGem PSN BGEM J122948.45+271410.0 BlackGEM N
259508 2025-06-20 23:26:27 ALeRCE S. Jurado,F.E. Bauer,F. Forster et al. ALeRCE ZTF 12:29:48.488 +27:14:10.24 2025-06-16 04:45:26.001 17.6031 r-ZTF PSN ZTF25aauzryv ZTF Early SN candidate (g-rise > 0.39+-0.01 mag/day, r-rise > 0.41+-0.01 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/ZTF25aauzryv N
258455 2025-06-14 08:34:39 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 12:29:48.491 +27:14:10.49 2025-06-13 22:38:47.904 17.58 L-GOTO Other GOTO25dmg GOTO N
258429 2025-06-14 06:11:11 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 12:29:48.482 +27:14:10.26 2025-06-05 05:07:16.999 19.7042 g-ZTF PSN ZTF25aauzryv ZTF N
257966 2025-06-07 17:45:19 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 12:29:48.471 +27:14:10.25 2025-06-07 07:37:32.736 18.362 orange-ATLAS PSN ATLAS25fyr ATLAS 2025TNSTR2132....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
21261 2025-06-09 04:12:05 Joseph Farah Joseph Farah (LCO/UCSB), Moira Andrew, D. Andrew Howell, Curtis McCully, Yuan Qi Ni, Kathryn Wynn Global SN Project SN II 0.02466 1 Global SN Project Using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe II at early phases. The supernova is associated with host NGC 4475 (z = 0.024660, 1998A&AS..130..333T; value from NED). This redshift is well-matched by narrow host hydrogen and helium emission lines. Further followup is encouraged. 2025TNSCR2162....1F
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
21261 2025-06-08 07:29:44 FTN / FLOYDS-N 3600 LCO Joseph Farah Global SN Project tns_2025nat_2025-06-08_07-29-44_FTN_FLOYDS-N_Global_SN_Project.ascii tns_2025nat_2025-06-08_07-29-44_FTN_FLOYDS-N_Global_SN_Project.fits Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 259508 of Group ZTF
Previous RA, DEC: 12:29:48.488, +27:14:10.24 (187.45203169197, +27.236177218742)
Updated RA, DEC: 12:29:48.488, +27:14:10.24 (187.45203169197, +27.236177218742)

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 259508 of Group ZTF
Previous RA, DEC: 12:29:48.482, +27:14:10.26 (187.4520066, +27.2361822)
Updated RA, DEC: 12:29:48.488, +27:14:10.24 (187.45203169197, +27.236177218742)

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 258429 of Group ZTF
Previous RA, DEC: 12:29:48.471, +27:14:10.25 (187.451963333, +27.23618)
Updated RA, DEC: 12:29:48.482, +27:14:10.26 (187.4520066, +27.2361822)