RA/DEC (2000)
17:13:43.052 +07:37:30.92
258.4293846 +7.6252549
Type
SN IIb
Redshift
0.01
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2024-12-29 13:44:25.002
TNS AT
Y
Public
Y
Discovery Mag
15.6271
Filter
r-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2024afyu - 2025-03-29 04:42:06 CA-2.2m / CAFOS (GOTO)z=
 ▌SN_2024afyu - 2025-01-04 05:01:00 Other / Other (None)z=
▌Show H at z=vexp= km/s
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▌Show [Ca II] at z=vexp= km/s
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌LAST_LAST-Cam_Clear
 ▌GOTO-N_GOTO-2_L
 ▌GOTO-N_GOTO-1_L
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌P48_ZTF-Cam_r
 ▌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
20673 2025-03-29 04:42:06 CA-2.2m / CAFOS Cristina Jiménez Palau, Miika Pursiainen, Ben Godson GOTO tns_2024afyu_2025-03-29_04-42-05.760_CA-2.2m_CAFOS_GOTO.dat Object
20024 2025-01-04 05:01:00 Other / Other 3600 Claudio Balcon Claudio Balcon None tns_2024afyu_2025-01-04_05-01-00_Other_Other_None.dat tns_2024afyu_2025-01-04_05-01-00_Other_Other_None.fit Object We obtained the low-resolution spectrum R~100 using the FOSC-E5535 spectrograph attached to a 0.41m telescope, in the course of Italian Supernovae Search Project.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2024-07-01 22:09:30 - 2025-04-18 21:46:45 2460493.42326 - 2460784.40747 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
482594 2025-04-18 21:46:45 2460784.40747 15.7 ABMag Clear- LAST_LAST-Cam 400
482593 2024-07-01 22:09:30 2460493.42326 20.95 ABMag Clear- LAST_LAST-Cam 2000 [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-01-25 06:55:32 - 2025-01-25 06:55:32 2460700.788563 - 2460700.788563 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
464431 2025-01-25 06:55:32 2460700.788563 15.1 0.03 ABMag L-GOTO GOTO-N_GOTO-2 180
L-GOTO GOTO-N_GOTO-1 2024-10-24 19:58:29 - 2024-10-24 19:58:29 2460608.332284 - 2460608.332284 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
464430 2024-10-24 19:58:29 2460608.332284 19.6 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-04-29 06:59:37 - 2025-04-29 06:59:37 2460794.7914005 - 2460794.7914005 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
487367 2025-04-29 06:59:37 2460794.7914005 20.87 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-05-06 07:43:34 - 2025-05-06 07:43:34 2460801.8219213 - 2460801.8219213 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
487368 2025-05-06 07:43:34 2460801.8219213 16.21 0.02 20.94 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
r-ZTF P48_ZTF-Cam 2024-12-29 13:44:25 - 2024-12-30 13:43:03 2460674.0725116 - 2460675.0715625 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
457095 2024-12-30 13:43:03 2460675.0715625 15.5817 0.0248497 ABMag r-ZTF P48_ZTF-Cam
457094 2024-12-29 13:44:25 2460674.0725116 15.6271 0.0261758 ABMag r-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2024-10-21 05:46:19 - 2025-01-25 15:32:03 2460604.7405 - 2460701.14726 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
464616 2025-01-25 15:32:03 2460701.14726 14.668 0.009 19.29 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
464615 2024-10-21 05:46:19 2460604.7405 18.74 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
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
254545 2025-05-08 07:45:02 BlackGEM_Bot1 P. Groot,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 17:13:43.053 +07:37:30.90 2025-05-06 07:43:34.000 16.21 BG-q-BlackGem PSN BGEM J171343.05+073730.9 BlackGEM N
251866 2025-04-18 22:56:24 LAST_Bot1 R. Konno (WIS),E. A. Zimmerman (WIS),A. Horowicz (WIS) et al. LAST LAST 17:13:43.094 +07:37:30.98 2025-04-18 21:46:45.408 15.7 Clear- PSN LAST N
242432 2025-01-25 21:15:11 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 17:13:43.049 +07:37:30.92 2025-01-25 15:32:03.264 14.668 orange-ATLAS PSN ATLAS25axv ATLAS N
242336 2025-01-25 10:04:16 GOTO_bot B. Godson,D. O'Neill,K. Ackley et al. GOTO GOTO 17:13:43.081 +07:37:30.77 2025-01-25 06:55:31.584 15.1 L-GOTO Other GOTO25na GOTO N
238230 2024-12-30 13:58:34 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 17:13:43.052 +07:37:30.92 2024-12-29 13:44:25.002 15.6271 r-ZTF PSN ZTF24abzxalv ZTF 2024TNSTR5161....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
20673 2025-03-29 10:19:42 Joe Lyman Cristina Jiménez Palau, Miika Pursiainen, Ben Godson, Mark Magee, Joe Lyman, Lluís Galbany, Tom Killestein GOTO SN IIb 0.01 1 Add GOTO Best matches to SNe IIb. Object is now ~100 days since first detection and show a remarkably slow light-curve evolution. 2025TNSCR1202....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
20673 2025-03-29 04:42:06 CA-2.2m / CAFOS Cristina Jiménez Palau, Miika Pursiainen, Ben Godson GOTO tns_2024afyu_2025-03-29_04-42-05.760_CA-2.2m_CAFOS_GOTO.dat Object
20024 2025-01-04 06:01:49 Claudio Balcon Claudio Balcon (Belluno A.O. ISSP) None SN II 0.012 1 GELATO (Harutyunyan et al., 2008, A&A, 488, 383) suggests that this low S/N spectrum resembles that of a type II supernova. The redshift has been deduced from the SN spectral fitting. 2025TNSCR..53....1B
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
20024 2025-01-04 05:01:00 Other / Other 3600 Claudio Balcon Claudio Balcon None tns_2024afyu_2025-01-04_05-01-00_Other_Other_None.dat tns_2024afyu_2025-01-04_05-01-00_Other_Other_None.fit Object We obtained the low-resolution spectrum R~100 using the FOSC-E5535 spectrograph attached to a 0.41m telescope, in the course of Italian Supernovae Search Project.

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