RA/DEC (2000)
16:06:00.889 +18:47:08.04
241.5037034 +18.7855656
Type
SN Ia
Redshift
0.045
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-09-25 05:18:36.000
TNS AT
Y
Public
Y
Discovery Mag
18.831
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), 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, P. J. Broda (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_2025you - 2025-10-05 02:37:30 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

 ▌GOTO-N_GOTO-2_L
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_cyan
   
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
22164 2025-10-05 02:37:30 P60 / SEDM 2160 SEDmRobot ZTF tns_2025you_2025-10-05_02-37-30.460188_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-09-07 21:05:25 - 2025-10-08 19:46:36 2460926.378756 - 2460957.32403 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
522592 2025-10-08 19:46:36 2460957.32403 17.03 0.03 ABMag L-GOTO GOTO-N_GOTO-2 360
522591 2025-09-07 21:05:25 2460926.378756 19.2 ABMag L-GOTO GOTO-N_GOTO-2 360 [Last non detection]
g-ZTF P48_ZTF-Cam 2025-09-23 03:15:22 - 2025-09-30 03:29:05 2460941.6356713 - 2460948.6451968 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520822 2025-09-30 03:29:05 2460948.6451968 17.7223 0.070503 ABMag g-ZTF P48_ZTF-Cam
520821 2025-09-24 03:14:33 2460942.6351042 19.423 0.140372 ABMag g-ZTF P48_ZTF-Cam
520820 2025-09-23 03:15:22 2460941.6356713 19.2686 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
cyan-ATLAS ATLAS-HKO_ATLAS-02 2025-09-24 05:48:21 - 2025-09-25 05:18:36 2460942.74191 - 2460943.72125 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520039 2025-09-25 05:18:36 2460943.72125 18.831 0.152 19.09 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
520038 2025-09-24 05:48:21 2460942.74191 19.17 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 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
272648 2025-10-08 20:12:37 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 16:06:00.905 +18:47:08.31 2025-10-08 19:46:36.192 17.03 L-GOTO Other GOTO25iib GOTO N
271740 2025-09-30 03:45:47 BTSbot_bot Nabeel Rehemtulla (CIERA,NU),Wynn Jacobson-Galán (Caltech) et al. ZTF ZTF 16:06:00.889 +18:47:08.04 2025-09-24 03:14:33.002 19.423 g-ZTF PSN ZTF25abtaxth ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
271343 2025-09-25 21:01:11 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 16:06:00.851 +18:47:07.89 2025-09-25 05:18:36.000 18.831 cyan-ATLAS PSN ATLAS25lxb ATLAS 2025TNSTR3855....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
22164 2025-10-06 19:55:05 ZTF_Bot1 J. Sollerman, A. Mehla, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN Ia 0.045 1 ZTF 2025TNSCR4026....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
22164 2025-10-05 02:37:30 P60 / SEDM 2160 SEDmRobot ZTF tns_2025you_2025-10-05_02-37-30.460188_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Tue, 09/30/2025 - 03:45

Object coordinates updated

Object coordinates updated according to AT-report 271740 of Group ZTF
Previous RA, DEC: 16:06:00.851, +18:47:07.89 (241.503544, +18.785526)
Updated RA, DEC: 16:06:00.889, +18:47:08.04 (241.5037034, +18.7855656)