RA/DEC (2000)
00:55:55.102 +10:06:59.04
13.9795920449 +10.1164002962
Type
SN Ia
Redshift
0.04
Discovery ReportClassification Report
Related AstroNotes: 2025-305
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-10-15 21:51:40.896
TNS AT
Y
Public
Y
Discovery Mag
18.577
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_2025aavu - 2025-10-22 22:40:50 NOT / ALFOSC (None)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

 ▌PS2_GPC2_w
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_cyan
 ▌GOTO-N_GOTO-1_L
   
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
22274 2025-10-22 22:40:50 NOT / ALFOSC 700 Emma Johtela, Uliana Pylypenko, Emily Sageser, Jouni Valkjärvi None tns_2025aavu_2025-10-22_22-40-50_NOT_ALFOSC_None.ascii tns_2025aavu_2025-10-22_22-40-50_NOT_ALFOSC_None.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
w-P1 PS2_GPC2 2025-11-25 05:07:00 - 2025-11-25 05:07:00 2461004.71319 - 2461004.71319 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
546848 2025-11-25 05:07:00 2461004.71319 19.52 0.05 22 ABMag w-P1 PS2_GPC2 45 Robot
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-10-15 05:38:00 - 2025-10-15 05:38:00 2460963.73472 - 2460963.73472 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
524733 2025-10-15 05:38:00 2460963.73472 16.52 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
cyan-ATLAS ATLAS-STH_ATLAS-03 2025-10-15 21:51:41 - 2025-10-15 21:51:41 2460964.41089 - 2460964.41089 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
524734 2025-10-15 21:51:41 2460964.41089 18.577 0.096 19.57 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot
L-GOTO GOTO-N_GOTO-1 2025-10-05 02:24:23 - 2025-10-18 23:40:30 2460953.600267 - 2460967.486462 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
524825 2025-10-18 23:40:30 2460967.486462 17.96 0.03 ABMag L-GOTO GOTO-N_GOTO-1 180
524824 2025-10-05 02:24:23 2460953.600267 19.1 ABMag L-GOTO GOTO-N_GOTO-1 180 [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
285523 2026-01-01 21:46:14 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 00:55:55.102 +10:06:59.04 2025-11-25 05:06:59.616 19.52 w-P1 PSN PS25mkp Pan-STARRS N
273881 2025-10-19 10:29:50 GOTO_bot G. Ramsay, D. O'Neill, K. Ackley et al. GOTO GOTO 00:55:55.104 +10:06:59.05 2025-10-18 23:40:30.144 17.96 L-GOTO Other GOTO25iqy GOTO N
273841 2025-10-18 23:57:53 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 00:55:55.104 +10:06:59.00 2025-10-15 21:51:40.896 18.577 cyan-ATLAS PSN ATLAS25mwy ATLAS 2025TNSTR4170....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
22274 2025-10-23 12:41:53 Christina Humina Emma Johtela, Uliana Pylypenko, Emily Sageser, Jouni Valkjärvi, Christina Humina, Tuomas Kangas, Erkki Kankare (University of Turku), Niko Pyykkinen (NOT) None SN Ia 0.04 1 Classification was done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) as part of a remote observing course at the University of Turku. The best match for AT 2025aavu was given by type Ia. Redshift is from spectral match. 2025TNSCR4262....1J
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
22274 2025-10-22 22:40:50 NOT / ALFOSC 700 Emma Johtela, Uliana Pylypenko, Emily Sageser, Jouni Valkjärvi None tns_2025aavu_2025-10-22_22-40-50_NOT_ALFOSC_None.ascii tns_2025aavu_2025-10-22_22-40-50_NOT_ALFOSC_None.fits Object

Comments

TNS
System

Thu, 01/01/2026 - 21:46

Object coordinates updated

Object coordinates updated according to AT-report 285523 of Group Pan-STARRS
Previous RA, DEC: 00:55:55.104, +10:06:59.00 (13.9796005263, +10.1163894737)
Updated RA, DEC: 00:55:55.102, +10:06:59.04 (13.9795920449, +10.1164002962)