RA/DEC (2000)
15:35:25.783 +12:03:27.80
233.857430764 +12.0577222937
Type
SN Ia
Redshift
0.0061
Discovery ReportClassification Report
Reporting Group
None
Discovering Data Source
None
Discovery Date
2025-03-26 19:09:59.000
TNS AT
Y
Public
Y
Host Name
NGC5957
Discovery Mag
17.4
Filter
Clear-
Reporter/s
Koichi Itagaki
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025fvw - 2025-04-07 05:41:38 P60 / SEDM (ZTF)z=
 ▌SN_2025fvw - 2025-04-01 23:02:21 Other / Other (None)z=
 ▌SN_2025fvw - 2023-03-27 00:00:00 SOAR / Goodman (DLT40)z=
▌Show H 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

 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌GOTO-N_GOTO-1_L
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌XLT_OMR_Clear
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌PS1_GPC1_r
 ▌Other_Other_Other
   
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
20723 2025-04-07 05:41:38 P60 / SEDM 2160 SEDmRobot auto ZTF tns_2025fvw_2025-04-07_05-41-37.969331_P60_SEDM_ZTF.ascii Object
20686 2025-04-01 23:02:21 Other / Other 6012 R Leadbeater R Leadbeater None tns_2025fvw_2025-04-01_23-02-21_Other_Other_None.dat tns_2025fvw_2025-04-01_23-02-21_Other_Other_None.fit Object R~130 spectrum obtained using modified ALPY spectrograph at Three Hills Observatory as described here http://www.threehillsobservatory.co.uk/astro/spectroscopy_20.htm
20648 2023-03-27 00:00:00 SOAR / Goodman Ravi Ravi DLT40 tns_2025fvw_2023-03-27_SOAR_Goodman_DLT40.ascii tns_2025fvw_2023-03-27_SOAR_Goodman_DLT40.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-03-19 01:37:28 - 2025-03-19 01:37:28 2460753.567692 - 2460753.567692 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
479143 2025-03-19 01:37:28 2460753.567692 17.7 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-03-25 07:23:02 - 2025-03-25 07:23:02 2460759.80766 - 2460759.80766 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
479097 2025-03-25 07:23:02 2460759.80766 18.94 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-03-27 02:11:28 - 2025-03-27 02:11:28 2460761.591297 - 2460761.591297 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
479144 2025-03-27 02:11:28 2460761.591297 16.98 0.05 ABMag L-GOTO GOTO-N_GOTO-1 180
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-05-02 04:01:16 - 2025-05-02 04:01:16 2460797.6675463 - 2460797.6675463 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
487377 2025-05-02 04:01:16 2460797.6675463 20.59 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-05-04 06:55:26 - 2025-05-04 06:55:26 2460799.7884954 - 2460799.7884954 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
487378 2025-05-04 06:55:26 2460799.7884954 15.21 0.02 20.74 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
r-ZTF P48_ZTF-Cam 2025-03-24 11:58:02 - 2025-03-30 11:24:27 2460758.9986343 - 2460764.9753125 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
479780 2025-03-30 11:24:27 2460764.9753125 17.6654 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
479175 2025-03-25 08:13:05 2460759.842419 18.9175 0.0909718 ABMag r-ZTF P48_ZTF-Cam
479174 2025-03-24 11:58:02 2460758.9986343 20.3117 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-03-27 12:00:20 - 2025-03-30 11:45:17 2460762.0002315 - 2460764.9897801 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
479781 2025-03-30 11:45:17 2460764.9897801 15.334 0.0231074 20.4629 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
479176 2025-03-27 12:00:20 2460762.0002315 16.9141 0.0708192 ABMag g-ZTF P48_ZTF-Cam
Clear- XLT_OMR 2025-03-26 19:09:59 - 2025-03-26 19:09:59 2460761.2985995 - 2460761.2985995 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
479056 2025-03-26 19:09:59 2460761.2985995 17.4 VegaMag Clear- XLT_OMR
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-03-26 12:27:46 - 2025-03-26 12:27:46 2460761.01928 - 2460761.01928 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
479098 2025-03-26 12:27:46 2460761.01928 17.496 0.059 19.51 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
r-P1 PS1_GPC1 2025-03-26 12:39:34 - 2025-03-26 12:39:34 2460761.02748 - 2460761.02748 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
479123 2025-03-26 12:39:34 2460761.02748 17.24 0.03 20.6 ABMag r-P1 PS1_GPC1 27 Robot
Other- Other_Other 2025-03-03 09:00:33 - 2025-06-04 04:31:48 2460737.87538 - 2460830.68875 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
493616 2025-06-04 04:31:48 2460830.68875 15.7 19.4 VegaMag Other- Other_Other 60 Robot MASTER-OAFA
493615 2025-06-04 03:16:49 2460830.63668 15.8 19.2 VegaMag Other- Other_Other 60 Robot MASTER-OAFA
493614 2025-03-03 09:00:33 2460737.87538 19 VegaMag Other- Other_Other 120 Robot [Last non detection] MASTER-OAFA
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
257759 2025-06-04 15:06:19 MASTER Ya.Kechin,V.Lipunov,E.Gorbovskoy et al. MASTER MASTER 15:35:25.800 +12:03:27.70 2025-06-04 03:16:49.152 15.8 Other- PSN MASTER OT J153525.80+120327.7 MASTER N
254550 2025-05-08 08:08:02 BlackGEM_Bot1 P. Groot,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 15:35:25.806 +12:03:28.05 2025-05-04 06:55:26.000 15.21 BG-q-BlackGem PSN BGEM J153525.81+120328.1 BlackGEM N
250311 2025-03-30 13:41:27 ALeRCE F. Forster,F.E. Bauer,G. Pignata et al. ALeRCE ZTF 15:35:25.787 +12:03:27.75 2025-03-30 11:45:17.001 15.334 g-ZTF PSN NGC 5957 ZTF25aaktqzg ZTF Early SN candidate (g-rise > 0.85+-0.00 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/ZTF25aaktqzg N
250017 2025-03-27 12:21:15 Fritz Nabeel Rehemtulla (CIERA,NU),Christoffer Fremling (Caltech) et al. ZTF ZTF 15:35:25.789 +12:03:27.89 2025-03-25 08:13:05.001 18.9175 r-ZTF PSN ZTF25aaktqzg ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
250004 2025-03-27 11:27:37 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 15:35:25.777 +12:03:27.92 2025-03-27 02:11:28.320 16.98 L-GOTO Other GOTO25bhh GOTO N
249993 2025-03-27 09:56:54 YSE_Bot1 D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al. YSE Pan-STARRS 15:35:25.783 +12:03:27.80 2025-03-26 12:39:34.272 17.24 r-P1 PSN PS25avu Pan-STARRS N
249980 2025-03-27 08:14:18 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 15:35:25.798 +12:03:27.89 2025-03-26 12:27:45.792 17.496 orange-ATLAS PSN ATLAS25dcd ATLAS N
249958 2025-03-26 22:14:25 Koichi Itagaki Koichi Itagaki et al. 15:35:25.760 +12:03:28.30 2025-03-26 19:09:59.000 17.4 Clear- PSN NGC5957 2025TNSTR1151....1I N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
20723 2025-04-07 06:25:09 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 0.0061 1 Add ZTF 2025TNSCR1320....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
20723 2025-04-07 05:41:38 P60 / SEDM 2160 SEDmRobot auto ZTF tns_2025fvw_2025-04-07_05-41-37.969331_P60_SEDM_ZTF.ascii Object
20686 2025-04-03 16:14:06 Robin Leadbeater Robin Leadbeater None SN Ia 0.006 1 1 SNID ( Blondin, S. & Tonry, J. L. 2007. ApJ, 666, 1024) gives a good matches to type Ia supernovae near maximum.The adopted redshift is that of the probable host NGC 5957 from NED 2025TNSCR1262....1L
Related files
File Comments Last Modified (UT) Modified By
tns_2025fvw_atrep_20686.png SNID best match 2025-04-03 16:14:06 Robin Leadbeater
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
20686 2025-04-01 23:02:21 Other / Other 6012 R Leadbeater R Leadbeater None tns_2025fvw_2025-04-01_23-02-21_Other_Other_None.dat tns_2025fvw_2025-04-01_23-02-21_Other_Other_None.fit Object R~130 spectrum obtained using modified ALPY spectrograph at Three Hills Observatory as described here http://www.threehillsobservatory.co.uk/astro/spectroscopy_20.htm
20648 2025-03-27 08:54:44 Aravind Pazhayath Ravi Aravind P. Ravi (UC Davis), K. A. Bostroem, D. J. Sand, S. Valenti, J. Andrews, J. Pearson, S. Jha, M. Lundquist, E. Hoang, M. Shrestha, Y. Dong, D. Janzen, G. Hosseinzadeh, N. Meza, D. Mehta, A. Martas, B. Subrayan DLT40 SN Ia 1 Add DLT40 Matches a Type Ia via SNID (though one of the highest matches is at phase +12 days which is not consistent with the phase based on non-detection limits). A reliable classification was not obtained with GELATO. Presence of Ti trough suggests it is an underluminous SN Ia. Follow-up is encouraged. 2025TNSCR1186....1R
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
20648 2023-03-27 00:00:00 SOAR / Goodman Ravi Ravi DLT40 tns_2025fvw_2023-03-27_SOAR_Goodman_DLT40.ascii tns_2025fvw_2023-03-27_SOAR_Goodman_DLT40.fits Object

Comments

TNS
System

Thu, 03/27/2025 - 09:56

Object coordinates updated

Object coordinates updated according to AT-report 249993 of Group Pan-STARRS
Previous RA, DEC: 15:35:25.798, +12:03:27.89 (233.857492857, +12.0577464286)
Updated RA, DEC: 15:35:25.783, +12:03:27.80 (233.857430764, +12.0577222937)

TNS
System

Thu, 03/27/2025 - 08:14

Object coordinates updated

Object coordinates updated according to AT-report 249980 of Group ATLAS
Previous RA, DEC: 15:35:25.760, +12:03:28.30 (233.857333, +12.057861)
Updated RA, DEC: 15:35:25.798, +12:03:27.89 (233.857492857, +12.0577464286)