RA/DEC (2000)
17:21:10.121 +68:27:32.06
260.292171 +68.4589062
Type
SN Ia
Redshift
0.04
Discovery ReportClassification Report
Related AstroNotes: 2025-141
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2025-04-24 08:55:04.996
TNS AT
Y
Public
Y
Host Name
SDSS J172110.16+682739.7
Discovery Mag
19.3222
Filter
g-ZTF
Reporter/s
A. Munoz-Arancibia, F.E. Bauer, G. Pignata, F. Forster, A. Mourao, S. Jurado, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, B. Gamboa, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025iik - 2025-05-08 01:07:24 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

 ▌GOTO-N_GOTO-2_L
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_orange
   
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
20999 2025-05-08 01:07:24 NOT / ALFOSC Obs II course SU None tns_2025iik_2460803.5468_NOT_ALFOSC_None.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-04-21 00:49:07 - 2025-04-26 00:27:14 2460786.534112 - 2460791.518913 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
486551 2025-04-26 00:27:14 2460791.518913 18.59 0.2 ABMag L-GOTO GOTO-N_GOTO-2 180
486550 2025-04-21 00:49:07 2460786.534112 18.9 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
g-ZTF P48_ZTF-Cam 2025-04-21 07:35:27 - 2025-04-24 08:55:05 2460786.8162847 - 2460789.8715856 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
484096 2025-04-24 08:55:05 2460789.8715856 19.3222 0.11157 20.7026 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
484095 2025-04-21 07:35:27 2460786.8162847 20.1145 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-04-22 12:58:58 - 2025-04-26 12:29:13 2460788.04095 - 2460792.02029 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
484588 2025-04-26 12:29:13 2460792.02029 18.705 0.135 19.27 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
484587 2025-04-22 12:58:58 2460788.04095 19.29 ABMag orange-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
253912 2025-05-04 11:05:39 GOTO_bot A. Kumar,G. Ramsay,K. Ackley et al. GOTO GOTO 17:21:10.104 +68:27:32.05 2025-04-26 00:27:13.824 18.59 L-GOTO Other GOTO25che GOTO N
252874 2025-04-28 19:21:32 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 17:21:10.106 +68:27:31.93 2025-04-26 12:29:13.056 18.705 orange-ATLAS PSN ATLAS25ekg ATLAS N
252605 2025-04-24 18:51:30 ALeRCE A. Munoz-Arancibia,F.E. Bauer,G. Pignata et al. ALeRCE ZTF 17:21:10.121 +68:27:32.06 2025-04-24 08:55:04.996 19.3222 g-ZTF PSN SDSS J172110.16+682739.7 ZTF25aaoefsh ZTF Early SN candidate (g-rise > 0.26+-0.04 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25aaoefsh 2025TNSTR1515....1M N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
20999 2025-05-08 14:46:33 Priscila Pessi Joanna Pajak, Logan Peschieras, Warsame Mohamed Ali, Pak Hei Chan, Nikolei Höglinger, Evgenia Lamprou, Rikard Lesley, Håkan Lundberg, Nikolas Valsamidis, Terese Thidemann Hansen, Anjasha Gangopadhyay, Jesper Sollerman, Konstantinos Tsalapatas, Priscila Pessi (SU,OKC) None SN Ia 0.04 1 1 Redshift from spectral matching. Reported on AstroNote 2025-141. 2025TNSCR1718....1P
Related files
File Comments Last Modified (UT) Modified By
tns_2025iik_atrep_20999.ascii 2025-05-08 14:46:33 Priscila Pessi
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
20999 2025-05-08 01:07:24 NOT / ALFOSC Obs II course SU None tns_2025iik_2460803.5468_NOT_ALFOSC_None.ascii Object

Comments