RA/DEC (2000)
10:43:37.069 +00:37:24.31
160.904452342 +0.623418075586
Type
SN Ia
Redshift
0.08
Discovery ReportClassification Report
Related AstroNotes: 2025-108
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-04-02 02:47:11.040
TNS AT
Y
Public
Y
Discovery Mag
18.918
Filter
cyan-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)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025gnn - 2025-04-23 04:59:01 P60 / SEDM (ZTF)z=
 ▌SN_2025gnn - 2025-04-05 05:36:42 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

 ▌GOTO-S_GOTO-3_L
 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌ATLAS-STH_ATLAS-03_orange
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌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
20896 2025-04-23 04:59:01 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025gnn_2025-04-23_04-59-00.611764_P60_SEDM_ZTF.ascii Object
20700 2025-04-05 05:36:42 ESO-NTT / EFOSC2-NTT 1800 C. Duffy, M. Ghendrih M. Smith, C. Angus ePESSTO+ tns_2025gnn_2025-04-05_05-36-42_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025gnn_2025-04-05_05-36-42_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object 2025-04-28: This spectrum should be ignored in any analysis. After a re-analysis, it has been confirmed that a neighbouring star was in the slit rather than the SN candidate.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-04-04 11:00:00 - 2025-04-04 11:00:00 2460769.958334 - 2460769.958334 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
480759 2025-04-04 11:00:00 2460769.958334 18.7 0.07 ABMag L-GOTO GOTO-S_GOTO-3 180
L-GOTO GOTO-N_GOTO-2 2025-03-28 01:07:06 - 2025-03-28 01:07:06 2460762.546604 - 2460762.546604 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
480758 2025-03-28 01:07:06 2460762.546604 20.1 ABMag L-GOTO GOTO-N_GOTO-2 360 [Last non detection]
cyan-ATLAS ATLAS-CHL_ATLAS-04 2025-04-02 02:47:11 - 2025-04-02 02:47:11 2460767.6161 - 2460767.6161 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
480303 2025-04-02 02:47:11 2460767.6161 18.918 0.127 19.32 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2025-03-30 21:36:56 - 2025-03-30 21:36:56 2460765.40065 - 2460765.40065 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
480302 2025-03-30 21:36:56 2460765.40065 19.28 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
r-ZTF P48_ZTF-Cam 2025-03-27 06:22:19 - 2025-04-05 06:04:39 2460761.7654977 - 2460770.7532292 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
480848 2025-04-05 06:04:39 2460770.7532292 18.7459 0.108394 ABMag r-ZTF P48_ZTF-Cam
480847 2025-03-27 06:22:19 2460761.7654977 20.5055 0.345326 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-03-25 06:34:22 - 2025-03-25 06:34:22 2460759.7738657 - 2460759.7738657 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
480846 2025-03-25 06:34:22 2460759.7738657 20.2358 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
w-P1 PS1_GPC1 2025-03-28 07:11:25 - 2025-03-28 07:11:25 2460762.79959 - 2460762.79959 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
487937 2025-03-28 07:11:25 2460762.79959 20.59 0.1 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
254844 2025-05-12 10:35:31 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 10:43:37.069 +00:37:24.31 2025-03-28 07:11:24.576 20.59 w-P1 PSN PS25crd Pan-STARRS N
250964 2025-04-05 07:09:29 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 10:43:37.084 +00:37:24.33 2025-03-27 06:22:19.001 20.5055 r-ZTF PSN ZTF25aalpjxp ZTF N
250914 2025-04-04 12:53:12 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 10:43:37.056 +00:37:24.87 2025-04-04 10:59:59.712 18.7 L-GOTO Other GOTO25boz GOTO N
250624 2025-04-03 07:25:31 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 10:43:37.087 +00:37:24.16 2025-04-02 02:47:11.040 18.918 cyan-ATLAS PSN ATLAS25dmo ATLAS 2025TNSTR1250....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
20896 2025-04-23 14:22:07 ZTF_Bot1 J. Johansson, S. Covarrubias, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN Ia 0.08 1 ZTF 2025TNSCR1509....1J
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
20896 2025-04-23 04:59:01 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025gnn_2025-04-23_04-59-00.611764_P60_SEDM_ZTF.ascii Object
20700 2025-04-05 17:47:10 Mathew Smith C. Duffy, M. Ghendrih, M. Smith, C. Angus, O. Yaron on behalf of ePESSTO+ ePESSTO+ CV 0 1 ePESSTO+ 2025-04-28: The of spectrum 2025gnn should be ignored in any analysis. After a re-analysis, it has been confirmed that a neighbouring star was in the slit rather than the SN candidate. 2025TNSCR1293....1D
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
20700 2025-04-05 05:36:42 ESO-NTT / EFOSC2-NTT 1800 C. Duffy, M. Ghendrih M. Smith, C. Angus ePESSTO+ tns_2025gnn_2025-04-05_05-36-42_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025gnn_2025-04-05_05-36-42_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object 2025-04-28: This spectrum should be ignored in any analysis. After a re-analysis, it has been confirmed that a neighbouring star was in the slit rather than the SN candidate.

Comments

TNS
System

Mon, 05/12/2025 - 10:35

Object coordinates updated

Object coordinates updated according to AT-report 254844 of Group Pan-STARRS
Previous RA, DEC: 10:43:37.084, +00:37:24.33 (160.9045176, +0.6234259)
Updated RA, DEC: 10:43:37.069, +00:37:24.31 (160.904452342, +0.623418075586)

TNS
System

Sat, 04/05/2025 - 07:09

Object coordinates updated

Object coordinates updated according to AT-report 250964 of Group ZTF
Previous RA, DEC: 10:43:37.087, +00:37:24.16 (160.90453, +0.623377142857)
Updated RA, DEC: 10:43:37.084, +00:37:24.33 (160.9045176, +0.6234259)