RA/DEC (2000)
14:47:02.625 +56:18:53.61
221.76093806154 +56.314891461538
Type
SN Ia
Redshift
0.0375
Discovery ReportClassification Report
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2021-01-03 11:15:45.999
TNS AT
Y
Public
Y
Host Name
WISEA J144702.66+561851.4
Host Redshift
0.037513
Discovery Mag
19.1517
Filter
r-ZTF
Reporter/s
F. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, L. Hernandez-Garcia, L. Galbany, G. Pignata, E. Camacho, J. Silva-Farfan, A. Mourao, J. Arredondo, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, E. Reyes, I. Reyes, P. Sanchez-Saez, C. Valenzuela, E. Castillo, D. Ruz-Mieres, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2021ct - 2021-01-14 14:13:12 FTN / FLOYDS-N (None)z=
 ▌SN_2021ct - 2021-01-14 10:22:06 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

 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌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
8583 2021-01-14 14:13:12 FTN / FLOYDS-N 3600 Las Cumbres Observatory None tns_2021ct_2021-01-14_14-13-12_FTN_FLOYDS-N.ascii Object
8611 2021-01-14 10:22:06 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2021ct_2021-01-14_10-22-06.337348_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2021-01-01 11:22:28 - 2021-01-03 11:15:46 2459215.9739352 - 2459217.9692824 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
183487 2021-01-03 11:15:46 2459217.9692824 19.1517 0.15209 19.9774 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
186973 2021-01-03 11:15:46 2459217.9692824 19.1517 0.15209 19.9774 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
186972 2021-01-01 11:22:28 2459215.9739352 19.0072 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
g-ZTF P48_ZTF-Cam 2021-01-01 11:50:55 - 2021-01-03 13:17:31 2459215.9936921 - 2459218.053831 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
183488 2021-01-03 13:17:31 2459218.053831 19.1165 0.180192 19.2174 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
183486 2021-01-01 11:50:55 2459215.9936921 19.1204 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
orange-ATLAS ATLAS-MLO_ATLAS-01 2021-01-08 14:45:36 - 2021-01-08 14:45:36 2459223.115 - 2459223.115 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
185229 2021-01-08 14:45:36 2459223.115 18.414 0.096 19.54 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
orange-ATLAS ATLAS-HKO_ATLAS-02 2021-01-02 14:31:12 - 2021-01-02 14:31:12 2459217.105 - 2459217.105 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
185228 2021-01-02 14:31:12 2459217.105 18.57 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
96897 2021-01-15 20:16:03 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 14:47:02.625 +56:18:53.61 2021-01-03 11:15:45.999 19.1517 r-ZTF PSN ZTF21aaaosmn ZTF Early SN candidate classified by Fink using the public ZTF stream. Object data at http://134.158.75.151:24000/ZTF21aaaosmn N
96155 2021-01-08 21:45:17 ATLAS_Bot1 J. Tonry, L. Denneau, A. Heinze et al. ATLAS ATLAS 14:47:02.623 +56:18:53.70 2021-01-08 14:45:36.000 18.414 orange-ATLAS PSN ATLAS21axd ATLAS N
95404 2021-01-03 20:12:24 ALeRCE F. Forster, F.E. Bauer, G. Pignata et al. ALeRCE ZTF 14:47:02.637 +56:18:53.77 2021-01-03 11:15:45.999 19.1517 r-ZTF PSN WISEA J144702.66+561851.4 ZTF21aaaosmn ZTF Early SN candidate (g-rise > 0.09+-0.01 mag/day, r-rise > 0.10+-0.01 mag/day) classified using ALeRCE's stamp classifier - see http://arxiv.org/abs/2008.03309 - and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF21aaaosmn 2021TNSTR..18....1F N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
8599 2021-01-18 17:32:32 ZTF_Bot1 A. Dahiwale, C. Fremling(Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN Ia 0.0375 1 ZTF 2021TNSCR.193....1D
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
8611 2021-01-14 10:22:06 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2021ct_2021-01-14_10-22-06.337348_P60_SEDM_ZTF.ascii Object
8571 2021-01-15 16:40:42 Craig Pellegrino Craig Pellegrino (LCO/UCSB), Yael Dgany (TAU), Iair Arcavi (TAU), Jamison Burke (LCO/UCSB), Daichi Hiramatsu (LCO/UCSB), D. Andrew Howell (LCO/UCSB), Curtis McCully (LCO/UCSB), Estefania Padilla Gonzalez (LCO/UCSB) None SN Ia-91bg-like 0.037 1 1 Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to 91bg-like SNe Ia ~7 days after maximum light, including SN 2006H. This phase is consistent with the ZTF lightcurve. The supernova is closest to WISEA J144702.66+561851.4, and we measure a redshift of approximately 0.037 based on narrow host galaxy lines present in the spectrum. Adopting this redshift we measure a Si II 6355 velocity of approximately 9000 km/s. 2021TNSCR.158....1P
Related files
File Comments Last Modified (UT) Modified By
tns_2021ct_classrep_8571.ps 2021-01-15 16:40:42 Craig Pellegrino
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
8583 2021-01-14 14:13:12 FTN / FLOYDS-N 3600 Las Cumbres Observatory None tns_2021ct_2021-01-14_14-13-12_FTN_FLOYDS-N.ascii Object

Comments

TNS
System

Fri, 01/15/2021 - 19:30

Object coordinates updated

Object coordinates updated according to AT-report 96897 of Group ZTF
Previous RA, DEC: 14:47:02.637, +56:18:53.77 (221.7609855, +56.3149367)
Updated RA, DEC: 14:47:02.625, +56:18:53.61 (221.76093806154, 56.314891461538)