RA/DEC (2000)
08:17:20.337 +27:07:35.37
124.3347363 +27.1264915
Type
SN Ia
Redshift
0.0981
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-09-20 11:36:10.002
TNS AT
Y
Public
Y
Discovery Mag
20.1606
Filter
g-ZTF
Reporter/s
Robert Stein (UMD) on behalf of the ZTF AGN/TDE working group
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025yir - 2025-10-19 00:00:00 Lick-3m / KAST (TRex)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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-N_GOTO-2_L
 ▌P48_ZTF-Cam_g
   
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
22415 2025-10-19 00:00:00 Lick-3m / KAST 3660 Natalie LeBaron, Nayana AJ Natalie LeBaron TRex tns_2025yir_2025-10-19_Lick-3m_KAST_TRex.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-09-26 05:44:45 - 2025-09-27 04:31:39 2460944.73941 - 2460945.68865 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520432 2025-09-27 04:31:39 2460945.68865 18.66 0.121 19.6 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
520431 2025-09-26 05:44:45 2460944.73941 19.55 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-09-14 05:24:01 - 2025-09-28 05:21:01 2460932.725007 - 2460946.722931 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521079 2025-09-28 05:21:01 2460946.722931 18.96 0.08 ABMag L-GOTO GOTO-N_GOTO-2 180
521078 2025-09-14 05:24:01 2460932.725007 19 ABMag L-GOTO GOTO-N_GOTO-2 135 [Last non detection]
g-ZTF P48_ZTF-Cam 2025-09-15 12:08:28 - 2025-09-23 12:16:31 2460934.0058796 - 2460942.0114699 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519363 2025-09-23 12:16:31 2460942.0114699 19.3198 0.156898 ABMag g-ZTF P48_ZTF-Cam
519362 2025-09-20 11:36:10 2460938.9834491 20.1606 0.176068 ABMag g-ZTF P48_ZTF-Cam
519361 2025-09-15 12:08:28 2460934.0058796 20.2672 ABMag g-ZTF P48_ZTF-Cam [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
271863 2025-09-30 12:49:41 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 08:17:20.318 +27:07:35.33 2025-09-28 05:21:01.152 18.96 L-GOTO Other GOTO25hwz GOTO N
271528 2025-09-27 13:33:38 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 08:17:20.332 +27:07:35.69 2025-09-27 04:31:39.360 18.66 wide-ATLAS PSN ATLAS25mbc ATLAS N
271043 2025-09-23 19:17:06 tdescore_bot Robert Stein (UMD) on behalf of the ZTF AGN/TDE working group et al. ZTF ZTF 08:17:20.337 +27:07:35.37 2025-09-20 11:36:10.002 20.1606 g-ZTF PSN ZTF25abtaiij ZTF 2025TNSTR3831....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22414 2025-11-15 00:43:02 Natalie LeBaron Natalie LeBaron, Nayana AJ, Ryan Chornock TRex SN Ia 0.0981 1 TRex We observed SN2025yir on 10-19-2025 UT with the Kast spectrograph on the Shane telescope. We classify this transient as a SN Ia at +2 weeks from peak using SNID (Blondin & Tonry, 2007, ApJ, 666, 1024). We measure the redshift from the host galaxy narrow Halpha line. 2025TNSCR4595....1L
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
22415 2025-10-19 00:00:00 Lick-3m / KAST 3660 Natalie LeBaron, Nayana AJ Natalie LeBaron TRex tns_2025yir_2025-10-19_Lick-3m_KAST_TRex.dat Object

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