RA/DEC (2000)
03:35:21.220 -18:31:54.26
53.8384185642 -18.5317376208
Type
SN Ia
Redshift
0.0284
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-06-27 10:03:45.792
TNS AT
Y
Public
Y
Discovery Mag
17.667
Filter
orange-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), C. Kukuckova, N. Keenan (Belfast High School), E. Boyd (Glenlola Collegiate)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025pfi - 2025-09-04 12:27:08 P200 / NGPS (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

 ▌GOTO-S_GOTO-3_L
 ▌PS2_GPC2_g
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_orange
 ▌P48_ZTF-Cam_r
   
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
21987 2025-09-04 12:27:08 P200 / NGPS Nicholas Earley Nicholas Earley ZTF tns_2025pfi_2025-09-04_12-27-08_P200_NGPS_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-01-09 10:45:05 - 2025-07-08 19:13:51 2460684.947976 - 2460865.30129 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503009 2025-07-08 19:13:51 2460865.30129 18.76 0.14 ABMag L-GOTO GOTO-S_GOTO-3 180
503008 2025-01-09 10:45:05 2460684.947976 16.8 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
g-P1 PS2_GPC2 2025-09-17 14:25:56 - 2025-09-17 14:25:56 2460936.10134 - 2460936.10134 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
518371 2025-09-17 14:25:56 2460936.10134 20 0.07 21 ABMag g-P1 PS2_GPC2 27 Robot
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-06-27 10:03:46 - 2025-06-27 10:03:46 2460853.91928 - 2460853.91928 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
499062 2025-06-27 10:03:46 2460853.91928 17.667 0.072 18.93 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2025-03-25 18:03:17 - 2025-03-25 18:03:17 2460760.25228 - 2460760.25228 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
499061 2025-03-25 18:03:17 2460760.25228 19.02 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
r-ZTF P48_ZTF-Cam 2025-08-13 11:00:01 - 2025-08-23 10:47:15 2460900.9583449 - 2460910.9494792 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
511759 2025-08-23 10:47:15 2460910.9494792 19.7052 0.149622 ABMag r-ZTF P48_ZTF-Cam
511758 2025-08-13 11:00:01 2460900.9583449 19.404 0.185408 ABMag r-ZTF P48_ZTF-Cam
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
270591 2025-09-18 18:23:43 YSE_Bot1 D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al. YSE Pan-STARRS 03:35:21.220 -18:31:54.26 2025-09-17 14:25:55.776 20 g-P1 PSN PS25hnv Pan-STARRS N
267357 2025-08-23 17:17:59 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 03:35:21.224 -18:31:53.97 2025-08-13 11:00:00.999 19.404 r-ZTF PSN ZTF25abikqpv ZTF N
262764 2025-07-16 22:24:26 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 03:35:21.221 -18:31:54.27 2025-07-08 19:13:51.456 18.76 L-GOTO Other GOTO25eyy GOTO This transient was discovered with the assistance of the GOTO Kilonova Seekers Citizen Scientists on Zooniverse. The candidate was flagged by volunteers: M.T. Mazzucato, Henryk Krawczyk, Antonio Pasqua, Mayahuel Torres Guerrero, Ayushmaan Mishra N
260418 2025-06-28 15:09:20 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 03:35:21.201 -18:31:54.09 2025-06-27 10:03:45.792 17.667 orange-ATLAS PSN ATLAS25gom ATLAS 2025TNSTR2445....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
21987 2025-09-08 16:28:00 ZTF_Bot1 J. Sollerman, K. Das, A. Mehla, C. Fremling (Caltech), M. Kasliwal (Caltech) on behalf of the ZTF CATS150 collaboration ZTF SN Ia 0.0284 1 ZTF 2025TNSCR3622....1S
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
21987 2025-09-04 12:27:08 P200 / NGPS Nicholas Earley Nicholas Earley ZTF tns_2025pfi_2025-09-04_12-27-08_P200_NGPS_ZTF.ascii Object

Comments

TNS
System

Thu, 09/18/2025 - 18:23

Object coordinates updated

Object coordinates updated according to AT-report 270591 of Group Pan-STARRS
Previous RA, DEC: 03:35:21.224, -18:31:53.97 (53.8384354, -18.531657)
Updated RA, DEC: 03:35:21.220, -18:31:54.26 (53.8384185642, -18.5317376208)

TNS
System

Sat, 08/23/2025 - 17:17

Object coordinates updated

Object coordinates updated according to AT-report 267357 of Group ZTF
Previous RA, DEC: 03:35:21.201, -18:31:54.09 (53.8383371429, -18.5316928571)
Updated RA, DEC: 03:35:21.224, -18:31:53.97 (53.8384354, -18.531657)