RA/DEC (2000)
09:29:15.269 -20:22:34.66
142.3136208 -20.3762934
Type
SN Ia
Redshift
0.016
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-10-26 17:42:44.064
TNS AT
Y
Public
Y
Discovery Mag
19.76
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_2025absa - 2025-10-30 05:15:17 NOT / ALFOSC (NUTS2)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
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▌Show N II at z=vexp= km/s
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▌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
 ▌ATLAS-STH_ATLAS-03_cyan
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_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
22327 2025-10-30 05:15:17 NOT / ALFOSC 3600 Arthur Matthew Kadela N. Pyykkinen NUTS2 tns_2025absa_2025-10-30_05-15-17.197_NOT_ALFOSC_NUTS2.dat tns_2025absa_2025-10-30_05-15-17.197_NOT_ALFOSC_NUTS2.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-10-23 17:59:44 - 2025-10-26 17:42:44 2460972.24981 - 2460975.238005 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
527160 2025-10-26 17:42:44 2460975.238005 19.76 0.14 ABMag L-GOTO GOTO-S_GOTO-3 360
527159 2025-10-23 17:59:44 2460972.24981 19.8 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
cyan-ATLAS ATLAS-STH_ATLAS-03 2025-10-29 01:56:18 - 2025-10-29 01:56:18 2460977.58076 - 2460977.58076 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
527566 2025-10-29 01:56:18 2460977.58076 17.95 0.065 19.33 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot
r-ZTF P48_ZTF-Cam 2025-12-06 12:35:28 - 2025-12-06 12:35:28 2461016.0246296 - 2461016.0246296 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536390 2025-12-06 12:35:28 2461016.0246296 16.397 0.0327926 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-12-06 10:03:59 - 2025-12-06 10:03:59 2461015.9194329 - 2461015.9194329 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536389 2025-12-06 10:03:59 2461015.9194329 17.48 0.065234 ABMag g-ZTF P48_ZTF-Cam
cyan-ATLAS ATLAS-MLO_ATLAS-01 2025-10-25 14:20:32 - 2025-10-25 14:20:32 2460974.09759 - 2460974.09759 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
527565 2025-10-25 14:20:32 2460974.09759 19.26 ABMag cyan-ATLAS ATLAS-MLO_ATLAS-01 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
279495 2025-12-06 13:45:11 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 09:29:15.269 -20:22:34.66 2025-12-06 10:03:59.002 17.48 g-ZTF PSN ZTF25acgbahf ZTF N
275117 2025-10-29 09:24:22 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 09:29:15.260 -20:22:34.58 2025-10-29 01:56:17.664 17.95 cyan-ATLAS PSN ATLAS25nku ATLAS N
274921 2025-10-26 18:02:37 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 09:29:15.213 -20:22:34.73 2025-10-26 17:42:44.064 19.76 L-GOTO Other GOTO25jgj GOTO 2025TNSTR4300....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
22327 2025-10-30 12:21:34 Maximilian Stritzinger N. Pyykkinen (Turku), M. Stritzinger (Aarhus), S. Bose (Aarhus), P. Charalampopoulos (Turku), H. Xiao (FSU), N. Morrell (LCO), C. Burns (Carnegie), E. Hsiao (FSU) NUTS2 SN Ia 0.016 1 NUTS2 The spectrum and light-curve evolution indicate a rapidly rising, pre-maximum Type~Ia supernova. 2025TNSCR4373....1P
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
22327 2025-10-30 05:15:17 NOT / ALFOSC 3600 Arthur Matthew Kadela N. Pyykkinen NUTS2 tns_2025absa_2025-10-30_05-15-17.197_NOT_ALFOSC_NUTS2.dat tns_2025absa_2025-10-30_05-15-17.197_NOT_ALFOSC_NUTS2.fits Object

Comments

TNS
System

Sat, 12/06/2025 - 13:45

Object coordinates updated

Object coordinates updated according to AT-report 279495 of Group ZTF
Previous RA, DEC: 09:29:15.260, -20:22:34.58 (142.313584545, -20.3762727273)
Updated RA, DEC: 09:29:15.269, -20:22:34.66 (142.3136208, -20.3762934)

TNS
System

Wed, 10/29/2025 - 09:24

Object coordinates updated

Object coordinates updated according to AT-report 275117 of Group ATLAS
Previous RA, DEC: 09:29:15.213, -20:22:34.73 (142.313389, -20.376313)
Updated RA, DEC: 09:29:15.260, -20:22:34.58 (142.313584545, -20.3762727273)