RA/DEC (2000)
17:19:56.872 +24:55:53.85
259.986968222 +24.9316258228
Type
SN Ic-BL
Redshift
0.019
Discovery ReportClassification Report
Related AstroNotes: 2025-265, 2025-267
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-08-22 22:12:00.864
TNS AT
Y
Public
Y
Discovery Mag
16.9
Filter
wide-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), M. R. Alarcón, J. Licandro, P. Nichita (IAC), 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)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025vaw - 2025-08-25 01:57:56 ESO-NTT / EFOSC2-NTT (ePESSTO+)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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-N_GOTO-2_L
 ▌PS2_GPC2_i
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌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
21861 2025-08-25 01:57:56 ESO-NTT / EFOSC2-NTT 300 H.-Y. Miao, R. Sanfeliu, C. Gutierrez C. Gutierrez ePESSTO+ tns_2025vaw_2025-08-25_01-57-56_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025vaw_2025-08-25_01-57-56_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-08-22 22:12:01 - 2025-08-22 22:12:01 2460910.42501 - 2460910.42501 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
511482 2025-08-22 22:12:01 2460910.42501 16.9 0.034 19.21 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
L-GOTO GOTO-N_GOTO-2 2025-08-31 21:26:05 - 2025-08-31 21:26:05 2460919.393106 - 2460919.393106 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
514693 2025-08-31 21:26:05 2460919.393106 17.05 0.01 ABMag L-GOTO GOTO-N_GOTO-2 360
i-P1 PS2_GPC2 2025-09-10 07:49:03 - 2025-09-10 07:49:03 2460928.82573 - 2460928.82573 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
516951 2025-09-10 07:49:03 2460928.82573 16.82 0.01 20.7 ABMag i-P1 PS2_GPC2 45 Robot
L-GOTO GOTO-N_GOTO-1 2025-07-29 23:10:12 - 2025-07-29 23:10:12 2460886.465424 - 2460886.465424 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
514692 2025-07-29 23:10:12 2460886.465424 19.6 ABMag L-GOTO GOTO-N_GOTO-1 360 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-08-23 04:13:59 - 2025-08-23 04:13:59 2460910.6763773 - 2460910.6763773 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
511818 2025-08-23 04:13:59 2460910.6763773 17.4948 0.0589073 20.514 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
g-ZTF P48_ZTF-Cam 2025-08-17 06:18:41 - 2025-08-17 06:18:41 2460904.7629745 - 2460904.7629745 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
511817 2025-08-17 06:18:41 2460904.7629745 20.5078 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-08-20 08:05:09 - 2025-08-20 08:05:09 2460907.83691 - 2460907.83691 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
511481 2025-08-20 08:05:09 2460907.83691 20.19 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 110 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
269945 2025-09-14 13:25:10 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 17:19:56.872 +24:55:53.85 2025-09-10 07:49:03.072 16.82 i-P1 PSN PS25hlu Pan-STARRS N
268832 2025-09-01 04:59:32 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 17:19:56.878 +24:55:53.86 2025-08-31 21:26:04.704 17.05 L-GOTO Other GOTO25gqc GOTO N
267386 2025-08-23 22:12:03 ALeRCE F. Forster,F.E. Bauer,G. Pignata et al. ALeRCE ZTF 17:19:56.877 +24:55:53.84 2025-08-23 04:13:58.999 17.4948 r-ZTF PSN SDSS J171956.64+245555.7 ZTF25abkwytp ZTF Early SN candidate (r-rise > 0.52+-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/ZTF25abkwytp N
267194 2025-08-23 01:01:14 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 17:19:56.889 +24:55:53.81 2025-08-22 22:12:00.864 16.9 wide-ATLAS PSN ATLAS25kew ATLAS 2025TNSTR3331....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
21861 2025-08-26 05:49:42 ePESSTOplus_Bot1 H.-Y. Miao, R. Sanfeliu, C. Gutierrez, A. Horowicz on behalf of ePESSTO+ ePESSTO+ SN Ic-BL 0.019 1 ePESSTO+ 2025TNSCR3383....1M
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
21861 2025-08-25 01:57:56 ESO-NTT / EFOSC2-NTT 300 H.-Y. Miao, R. Sanfeliu, C. Gutierrez C. Gutierrez ePESSTO+ tns_2025vaw_2025-08-25_01-57-56_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025vaw_2025-08-25_01-57-56_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Sun, 09/14/2025 - 13:25

Object coordinates updated

Object coordinates updated according to AT-report 269945 of Group Pan-STARRS
Previous RA, DEC: 17:19:56.877, +24:55:53.84 (259.9869858, +24.9316232)
Updated RA, DEC: 17:19:56.872, +24:55:53.85 (259.986968222, +24.9316258228)

TNS
System

Mon, 09/01/2025 - 04:59

Object coordinates updated

Object coordinates updated according to AT-report 267386 of Group ZTF
Previous RA, DEC: 17:19:56.877, +24:55:53.84 (259.9869858, +24.9316232)
Updated RA, DEC: 17:19:56.877, +24:55:53.84 (259.9869858, +24.9316232)

Ken
Smith

Sun, 08/24/2025 - 23:36

First ATLAS data point has diff mag overestimate

The flux for the first ATLAS data point shows an artificially increased flux because of an issue with the diff kernel. The flux is closer to w = 17.37. 

TNS
System

Sat, 08/23/2025 - 22:12

Object coordinates updated

Object coordinates updated according to AT-report 267386 of Group ZTF
Previous RA, DEC: 17:19:56.889, +24:55:53.81 (259.98703625, +24.931615)
Updated RA, DEC: 17:19:56.877, +24:55:53.84 (259.9869858, +24.9316232)