RA/DEC (2000)
17:03:29.495 +03:44:15.59
255.872896463 +3.7376635067
Type
SN Ia
Redshift
0.072
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-06-16 11:28:46.848
TNS AT
Y
Public
Y
Discovery Mag
19.11
Filter
L-GOTO
Reporter/s
D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025nsg - 2025-07-23 22:01:09 LT / SPRAT (ZTF)z=
 ▌SN_2025nsg - 2025-07-19 04:37:49 P60 / SEDM (ZTF)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
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌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
21643 2025-07-23 22:01:09 LT / SPRAT Daniel Perley, Jacob Wise, K-Ryan Hinds, Aleksandra Bochenek, Zoe McGrath Jacob Wise ZTF tns_2025nsg_2025-07-23_22-01-09.458_LT_SPRAT_ZTF.spec Object
21568 2025-07-19 04:37:49 P60 / SEDM 2700 SEDmRobot Yujing ZTF tns_2025nsg_2025-07-19_04-37-49.308235_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2024-07-01 21:14:08 - 2025-06-19 20:09:01 2460493.38482 - 2460846.3396 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
496546 2025-06-19 20:09:01 2460846.3396 18.78 ABMag Clear- LAST_LAST-Cam 400
496545 2024-07-01 21:14:08 2460493.38482 20.69 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2025-06-15 15:42:51 - 2025-06-16 11:28:47 2460842.154758 - 2460842.978316 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
495664 2025-06-16 11:28:47 2460842.978316 19.11 0.16 ABMag L-GOTO GOTO-S_GOTO-3 180
495663 2025-06-15 15:42:51 2460842.154758 19.2 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-06-14 07:06:17 - 2025-06-18 08:27:49 2460840.7960301 - 2460844.8526505 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
496137 2025-06-18 08:27:49 2460844.8526505 18.8413 0.0948841 ABMag r-ZTF P48_ZTF-Cam
496136 2025-06-14 07:06:17 2460840.7960301 19.7899 0.211887 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-06-14 05:35:22 - 2025-06-14 05:35:22 2460840.7328935 - 2460840.7328935 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
496135 2025-06-14 05:35:22 2460840.7328935 20.222 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-06-17 14:00:02 - 2025-06-18 10:09:50 2460844.08336 - 2460844.9235 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
496362 2025-06-18 10:09:50 2460844.9235 18.756 0.113 19.47 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
496361 2025-06-17 14:00:02 2460844.08336 18.86 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
w-P1 PS1_GPC1 2025-06-17 09:00:29 - 2025-06-17 09:00:29 2460843.87534 - 2460843.87534 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
502072 2025-06-17 09:00:29 2460843.87534 18.99 0.04 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
262241 2025-07-12 00:38:35 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 17:03:29.495 +03:44:15.59 2025-06-17 09:00:29.376 18.99 w-P1 PSN PS25eyz Pan-STARRS N
259222 2025-06-19 21:15:23 LAST_Bot1 E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al. LAST LAST 17:03:29.525 +03:44:15.30 2025-06-19 20:09:01.440 18.78 Clear- PSN LAST N
259135 2025-06-19 14:21:55 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 17:03:29.505 +03:44:15.50 2025-06-18 10:09:50.400 18.756 orange-ATLAS PSN ATLAS25gfr ATLAS N
259038 2025-06-18 09:58:10 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 17:03:29.418 +03:44:15.99 2025-06-14 07:06:17.000 19.7899 r-ZTF PSN ZTF21aawfybf ZTF N
258807 2025-06-17 08:13:19 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 17:03:29.498 +03:44:15.19 2025-06-16 11:28:46.848 19.11 L-GOTO Other GOTO25dol GOTO 2025TNSTR2257....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
21643 2025-07-25 11:51:11 Jacob Wise Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (LJMU), Aleksandra Bochenek (LJMU), Zoe McGrath (LJMU) ZTF SN Ia 0.072 1 ZTF Although the spectrum is low S/N with a high amount of host contamination, it displays Fe features characteristic of a SN Ia, supporting the previous classification. Redshift updated to z = 0.072 using host galaxy emission lines. 2025TNSCR2906....1W
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
21643 2025-07-23 22:01:09 LT / SPRAT Daniel Perley, Jacob Wise, K-Ryan Hinds, Aleksandra Bochenek, Zoe McGrath Jacob Wise ZTF tns_2025nsg_2025-07-23_22-01-09.458_LT_SPRAT_ZTF.spec Object
21568 2025-07-19 17:29:48 ZTF_Bot1 C. Fremling, D. Neill, Y. Sharma on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore ZTF SN Ia 0.075 1 ZTF 2025TNSCR2779....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
21568 2025-07-19 04:37:49 P60 / SEDM 2700 SEDmRobot Yujing ZTF tns_2025nsg_2025-07-19_04-37-49.308235_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Sat, 07/12/2025 - 00:38

Object coordinates updated

Object coordinates updated according to AT-report 262241 of Group Pan-STARRS
Previous RA, DEC: 17:03:29.418, +03:44:15.99 (255.8725767, +3.7377739)
Updated RA, DEC: 17:03:29.495, +03:44:15.59 (255.872896463, +3.7376635067)

TNS
System

Wed, 06/18/2025 - 09:58

Object coordinates updated

Object coordinates updated according to AT-report 259038 of Group ZTF
Previous RA, DEC: 17:03:29.498, +03:44:15.19 (255.872907, +3.737553)
Updated RA, DEC: 17:03:29.418, +03:44:15.99 (255.8725767, +3.7377739)