RA/DEC (2000)
15:45:35.398 +05:12:57.21
236.39749029 +5.21589105473
Type
SN Ia
Redshift
0.067
Discovery ReportClassification Report
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2023-06-15 05:40:59.002
TNS AT
Y
Public
Y
Host Name
SDSS J154535.39+051257.0
Host Redshift
0.06730417
Discovery Mag
19.1896
Filter
r-ZTF
Reporter/s
A. Munoz-Arancibia, F. Forster, F.E. Bauer, G. Pignata, A. Mourao, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, E. Camacho, J. Arredondo, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, A. Moya E. Reyes, 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_2023ktu - 2023-06-21 13:37:21 Bok / BC-Bok (FLEET)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-CHL_ATLAS-04_cyan
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌ML1_MeerLICHT-Cam_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌PS1_GPC1_w
   
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
15177 2023-06-21 13:37:21 Bok / BC-Bok Griffin Hosseinzadeh Sebastian Gomez FLEET tns_2023ktu_2023-06-21_13-37-21_Bok_BC-Bok_FLEET.txt Object Flux redwards of ~6600 Angstroms is affected by a problem with the standard star and its absolute value in this region is therefore not reliable.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
cyan-ATLAS ATLAS-CHL_ATLAS-04 2023-06-13 03:48:27 - 2023-06-16 02:58:05 2460108.65865 - 2460111.62367 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
348010 2023-06-16 02:58:05 2460111.62367 18.716 0.113 19.49 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
348009 2023-06-13 03:48:27 2460108.65865 19.53 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2023-06-30 01:58:01 - 2023-06-30 01:58:01 2460125.581956 - 2460125.581956 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
587622 2023-06-30 01:58:01 2460125.581956 18.14 0.05 19.65 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic
BG-q-BlackGem ML1_MeerLICHT-Cam 2021-04-13 00:17:13 - 2021-04-13 00:17:13 2459317.511956 - 2459317.511956 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
587621 2021-04-13 00:17:13 2459317.511956 20.84 ABMag BG-q-BlackGem ML1_MeerLICHT-Cam 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2023-06-10 06:26:39 - 2023-06-15 05:40:59 2460105.7685069 - 2460110.736794 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
347889 2023-06-15 05:40:59 2460110.736794 19.1896 0.0973261 20.698 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
349265 2023-06-15 05:40:59 2460110.736794 19.1896 0.097326 20.698 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
349264 2023-06-10 06:26:39 2460105.7685069 20.3949 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
g-ZTF P48_ZTF-Cam 2023-06-10 07:35:31 - 2023-06-15 06:48:21 2460105.816331 - 2460110.7835764 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
347890 2023-06-15 06:48:21 2460110.7835764 19.0752 0.124422 20.6164 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
347888 2023-06-10 07:35:31 2460105.816331 19.6999 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
w-P1 PS1_GPC1 2023-07-15 07:19:34 - 2023-07-15 07:19:34 2460140.80525 - 2460140.80525 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
352825 2023-07-15 07:19:34 2460140.80525 19.13 0.07 22 ABMag w-P1 PS1_GPC1 45 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
306375 2026-05-27 18:30:40 BlackGEM_Bot1 H. Tranin, F. Stoppa, D. Pieterse et al. BlackGEM BlackGEM 15:45:35.384 +05:12:56.89 2023-06-30 01:58:01.000 18.14 BG-q-BlackGem PSN BGEM J154535.38+051256.9 BlackGEM N
182515 2023-07-15 18:19:27 PS1_Bot1 K. C. Chambers, T. de Boer, J. Bulger et al. Pan-STARRS Pan-STARRS 15:45:35.398 +05:12:57.21 2023-07-15 07:19:33.600 19.13 w-P1 PSN PS23flg Pan-STARRS N
180750 2023-06-22 20:17:39 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 15:45:35.394 +05:12:57.00 2023-06-15 05:40:59.002 19.1896 r-ZTF PSN ZTF23aanxepa Fink Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF23aanxepa N
180129 2023-06-16 10:37:46 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 15:45:35.414 +05:12:56.80 2023-06-16 02:58:05.088 18.716 cyan-ATLAS PSN ATLAS23mnk ATLAS N
180066 2023-06-15 18:35:00 ALeRCE A. Munoz-Arancibia, F. Forster, F.E. Bauer et al. ALeRCE ZTF 15:45:35.390 +05:12:57.03 2023-06-15 05:40:59.002 19.1896 r-ZTF PSN SDSS J154535.39+051257.0 ZTF23aanxepa ALeRCE Early SN candidate (g-rise > 0.13+-0.03 mag/day, r-rise > 0.24+-0.02 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/ZTF23aanxepa 2023TNSTR1384....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
15102 2023-06-23 20:55:28 Sebastian Gomez Sebastian Gomez (STScI), Griffin Hosseinzadeh (Arizona) FLEET SN Ia 0.067 1 FLEET The nuclear transient 2023ktu was selected as a possible TDE by our FLEET program with a P(TDE) = 0.40 (Gomez et al., 2023, ApJ, 949, 113). The redshift of z = 0.067 was determined from host emission lines. We find a best match to the Type Ia SN 1999dq using SNID (Blondin & Tonry, 2007, ApJ, 666, 1024). 2023TNSCR1473....1G
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
15177 2023-06-21 13:37:21 Bok / BC-Bok Griffin Hosseinzadeh Sebastian Gomez FLEET tns_2023ktu_2023-06-21_13-37-21_Bok_BC-Bok_FLEET.txt Object Flux redwards of ~6600 Angstroms is affected by a problem with the standard star and its absolute value in this region is therefore not reliable.

Comments

TNS
System

Sat, 07/15/2023 - 17:30

Object coordinates updated

Object coordinates updated according to AT-report 182515 of Group Pan-STARRS
Previous RA, DEC: 15:45:35.394, +05:12:57.00 (236.39747455, +5.215833225)
Updated RA, DEC: 15:45:35.398, +05:12:57.21 (236.39749029, 5.21589105473)

TNS
System

Thu, 06/22/2023 - 19:30

Object coordinates updated

Object coordinates updated according to AT-report 180750 of Group ZTF
Previous RA, DEC: 15:45:35.390, +05:12:57.03 (236.39745725, +5.21584145)
Updated RA, DEC: 15:45:35.394, +05:12:57.00 (236.39747455, 5.215833225)