RA/DEC (2000)
23:40:30.160 +12:55:53.36
355.125667 +12.931489
Type
SN Ia
Redshift
0.028
Discovery ReportClassification Report
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2021-10-15 06:12:18.003
TNS AT
Y
Public
Y
Host Name
SDSS J234030.22+125553.3
Discovery Mag
19.3807
Filter
r-ZTF
Reporter/s
A. Munoz-Arancibia, F. Forster, F.E. Bauer, G. Pignata, L. Hernandez-Garcia, A. Mourao, L. Galbany, E. Camacho, J. Silva-Farfan, 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_2021abmy - 2021-10-24 12:31:55 FTS / FLOYDS-S (Global SN Project)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
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌Gaia_Gaia-photometric_G
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌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
11201 2021-10-24 12:31:55 FTS / FLOYDS-S 3600 Las Cumbres Observatory Megan Newsome Global SN Project tns_2021abmy_2021-10-24_12-31-55_FTS_FLOYDS-S_Global_SN_Project.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
w-P1 PS2_GPC2 2021-09-10 09:44:38 - 2021-09-10 09:44:38 2459467.906 - 2459467.906 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
259810 2021-09-10 09:44:38 2459467.906 21.88 0.23 22 ABMag w-P1 PS2_GPC2 45 Robot
r-ZTF P48_ZTF-Cam 2021-10-15 06:12:18 - 2021-10-15 06:12:18 2459502.7585417 - 2459502.7585417 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
247375 2021-10-15 06:12:18 2459502.7585417 19.3807 0.155442 19.8101 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
g-ZTF P48_ZTF-Cam 2021-10-10 08:06:43 - 2021-10-15 09:07:40 2459497.8379977 - 2459502.8803241 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
247376 2021-10-15 09:07:40 2459502.8803241 19.3613 0.162693 20.0513 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
247374 2021-10-10 08:06:43 2459497.8379977 20.2093 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
G-Gaia Gaia_Gaia-photometric 2021-08-04 13:36:29 - 2021-11-08 03:37:26 2459431.067 - 2459526.651 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
253658 2021-11-08 03:37:26 2459526.651 17.26 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
253657 2021-08-04 13:36:29 2459431.067 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2021-10-21 09:08:38 - 2021-10-21 09:08:38 2459508.881 - 2459508.881 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
248313 2021-10-21 09:08:38 2459508.881 17.322 0.074 18.53 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
orange-ATLAS ATLAS-HKO_ATLAS-02 2021-10-15 07:22:05 - 2021-10-15 07:22:05 2459502.807 - 2459502.807 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
248312 2021-10-15 07:22:05 2459502.807 17.51 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
w-P1 PS1_GPC1 2021-08-09 14:15:22 - 2021-08-09 14:15:22 2459436.094 - 2459436.094 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
250375 2021-08-09 14:15:22 2459436.094 21.87 0.18 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
132801 2021-12-31 20:37:55 PS2_Bot1 K. C. Chambers, T. de Boer, J. Bulger et al. Pan-STARRS Pan-STARRS 23:40:30.157 +12:55:53.39 2021-09-10 09:44:38.400 21.88 w-P1 PSN PS21lta Pan-STARRS N
129012 2021-11-10 13:52:48 Gaia_Bot1 S.T. Hodgkin, E. Breedt, A. Delgado et al. GaiaAlerts GaiaAlerts 23:40:30.160 +12:55:53.36 2021-11-08 03:37:26.400 17.26 G-Gaia PSN Gaia21fca GaiaAlerts confirmed SN Ia N
127613 2021-11-01 09:23:17 PS1_Bot1 K. C. Chambers, T. de Boer, J. Bulger et al. Pan-STARRS Pan-STARRS 23:40:30.155 +12:55:53.50 2021-08-09 14:15:21.600 21.87 w-P1 PSN PS21lta Pan-STARRS N
126577 2021-10-21 15:36:29 ATLAS_Bot1 J. Tonry, L. Denneau, A. Heinze et al. ATLAS ATLAS 23:40:30.163 +12:55:53.16 2021-10-21 09:08:38.400 17.322 orange-ATLAS PSN ATLAS21bkiu ATLAS N
126153 2021-10-15 18:34:05 ALeRCE A. Munoz-Arancibia, F. Forster, F.E. Bauer et al. ALeRCE ZTF 23:40:30.162 +12:55:53.41 2021-10-15 06:12:18.003 19.3807 r-ZTF PSN SDSS J234030.22+125553.3 ZTF21achqiue ALeRCE Early SN candidate (g-rise > 0.17+-0.03 mag/day, r-rise > 0.21+-0.03 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/ZTF21achqiue 2021TNSTR3524....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
11147 2021-10-25 21:31:56 Megan Newsome Megan Newsome (UCSB/Las Cumbres), 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), Craig Pellegrino (LCO/UCSB) Global SN Project SN Ia 0.028 1 1 Global SN Project Using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe Ia before maximum light, including SN 1994d 5 days before peak. The supernova is closest to WISEA J234030.19+125554.1. SNID finds a redshift of z = 0.028 this redshift we measure a Si II 6355 velocity of approximately 11,000 km/s. Adopting the distance modulus computed from this redshift (35.4), the g-band absolute magnitude of the object roughly coeval with the spectrum is -17.3 (apparent magnitude 18.06 from ZTF). This absolute magnitude and velocity is consistent with an SN Ia before maximum light. 2021TNSCR3640....1N
Related files
File Comments Last Modified (UT) Modified By
tns_2021abmy_classrep_11147_Global_SN_Project.ps SNID fit to SN 1994d. 2021-10-25 21:31:56 Megan Newsome
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
11201 2021-10-24 12:31:55 FTS / FLOYDS-S 3600 Las Cumbres Observatory Megan Newsome Global SN Project tns_2021abmy_2021-10-24_12-31-55_FTS_FLOYDS-S_Global_SN_Project.ascii Object

Comments

TNS
System

Wed, 11/10/2021 - 13:30

Object coordinates updated

Object coordinates updated according to AT-report 129012 of Group GaiaAlerts
Previous RA, DEC: 23:40:30.155, +12:55:53.50 (355.125646766, +12.9315287708)
Updated RA, DEC: 23:40:30.160, +12:55:53.36 (355.125667, 12.931489)

TNS
System

Mon, 11/01/2021 - 08:30

Object coordinates updated

Object coordinates updated according to AT-report 127613 of Group Pan-STARRS1
Previous RA, DEC: 23:40:30.162, +12:55:53.41 (355.12567494999996, +12.931502949999999)
Updated RA, DEC: 23:40:30.155, +12:55:53.50 (355.125646766, 12.9315287708)