RA/DEC (2000)
00:12:27.030 +42:28:15.42
3.1126244 +42.4709495
Type
SN Ia
Redshift
0.036
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-12-20 06:57:27.360
TNS AT
Y
Public
Y
Discovery Mag
19.656
Filter
cyan-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland (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, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (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_2025ahsk - 2025-12-22 04:12:43 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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-N_GOTO-2_L
 ▌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
22666 2025-12-22 04:12:43 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025ahsk_2025-12-22_04-12-42.509567_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-12-18 20:38:09 - 2025-12-18 20:38:09 2461028.35983 - 2461028.35983 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
541101 2025-12-18 20:38:09 2461028.35983 20.01 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-12-08 21:06:12 - 2025-12-29 19:32:28 2461018.379302 - 2461039.314206 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
545000 2025-12-29 19:32:28 2461039.314206 17.97 0.06 ABMag L-GOTO GOTO-N_GOTO-2 180
544999 2025-12-08 21:06:12 2461018.379302 20.2 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-12-05 04:43:54 - 2025-12-05 04:43:54 2461014.6971528 - 2461014.6971528 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
541450 2025-12-05 04:43:54 2461014.6971528 18.3822 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-12-19 02:55:47 - 2025-12-21 02:28:53 2461028.6220718 - 2461030.6033912 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
541452 2025-12-21 02:28:53 2461030.6033912 19.313 0.0944134 ABMag g-ZTF P48_ZTF-Cam
541451 2025-12-19 02:55:47 2461028.6220718 20.1569 0.0378356 ABMag g-ZTF P48_ZTF-Cam
cyan-ATLAS ATLAS-MLO_ATLAS-01 2025-12-20 06:57:27 - 2025-12-20 06:57:27 2461029.7899 - 2461029.7899 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
541102 2025-12-20 06:57:27 2461029.7899 19.656 0.182 19.69 ABMag cyan-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
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
283859 2025-12-29 23:01:34 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 00:12:27.050 +42:28:15.46 2025-12-29 19:32:27.744 17.97 L-GOTO Other GOTO25mwg GOTO N
281765 2025-12-21 06:54:33 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 00:12:27.030 +42:28:15.42 2025-12-19 02:55:47.003 20.1569 g-ZTF PSN ZTF25acixxbi ZTF N
281624 2025-12-20 17:36:37 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 00:12:27.065 +42:28:15.46 2025-12-20 06:57:27.360 19.656 cyan-ATLAS PSN ATLAS25pzv ATLAS 2025TNSTR5081....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
22665 2025-12-22 05:06:07 ZTF_Bot1 C. Fremling, D. Neill, Y. Sharma on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore ZTF SN Ia 0.036 1 ZTF 2025TNSCR5135....1F
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
22666 2025-12-22 04:12:43 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2025ahsk_2025-12-22_04-12-42.509567_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Sun, 12/21/2025 - 06:54

Object coordinates updated

Object coordinates updated according to AT-report 281765 of Group ZTF
Previous RA, DEC: 00:12:27.065, +42:28:15.46 (3.11277, +42.47096)
Updated RA, DEC: 00:12:27.030, +42:28:15.42 (3.1126244, +42.4709495)