RA/DEC (2000)
16:58:37.724 +50:29:26.33
254.657183767 +50.4906480957
Type
SN II
Redshift
0.01
Discovery ReportClassification Report
Reporting Group
ASAS-SN
Discovering Data Source
ASAS-SN
Discovery Date
2017-02-01 15:36:00.000
TNS AT
Y
Public
Y
Host Name
SBS 1657+505
Host Redshift
0.0102
Discovery Mag
17
Filter
V-Johnson
Reporter/s
K. Z. Stanek, for the ASAS-SN team
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2017zu - 2017-04-16 08:54:57 MDM-2.4 / OSMOS (ASAS-SN)z=
 ▌SN_2017zu - 2017-02-24 11:23:30 MDM-2.4 / OSMOS (ASAS-SN)z=
 ▌SN_2017zu - 2017-02-04 21:21:36 Lijiang-2.4m / YFOSC (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
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▌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

 ▌PS1_GPC1_i
 ▌ASASSN-1_Brutus_V
   
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
911 2017-04-16 08:54:57 MDM-2.4 / OSMOS J. Klusmeyer ASAS-SN tns_2017dbf_2457859.871502_MDM-2.4_OSMOS_ASAS-SN.txt Object
831 2017-02-24 11:23:30 MDM-2.4 / OSMOS J. Klusmeyer ASAS-SN tns_2017zu_2457808.9746602_MDM-2.4_OSMOS_ASAS-SN.txt tns_2017zu_2457808.9746602_MDM-2.4_OSMOS_ASAS-SN.fits Object
777 2017-02-04 21:21:36 Lijiang-2.4m / YFOSC 900 Kaixin Lu Jujia Zhang None tns_2017zu_2017-02-04.89_LJT_YFOSC.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
i-P1 PS1_GPC1 2017-04-12 14:05:16 - 2017-04-12 14:05:16 2457856.0869907 - 2457856.0869907 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
16012 2017-04-12 14:05:16 2457856.0869907 17.11 0.02 20.7 ABMag i-P1 PS1_GPC1 45 Robot
V-Johnson ASASSN-1_Brutus 2017-01-20 16:04:48 - 2017-02-01 15:36:00 2457774.17 - 2457786.15 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
12551 2017-02-01 15:36:00 2457786.15 17 0.1 17.8 VegaMag V-Johnson ASASSN-1_Brutus
12552 2017-01-25 15:36:00 2457779.15 17.6 0.2 18 VegaMag V-Johnson ASASSN-1_Brutus
12550 2017-01-20 16:04:48 2457774.17 17.5 VegaMag V-Johnson ASASSN-1_Brutus [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
10767 2017-04-15 23:23:19 PS1_Bot1 K. C. Chambers,M. E. Huber,H. Flewelling et al. Pan-STARRS Pan-STARRS 16:58:37.724 +50:29:26.33 2017-04-12 14:05:16.000 17.11 i-P1 PSN PS17chx Pan-STARRS N
8443 2017-02-01 18:11:32 Krzysztof Stanek K. Z. Stanek,for the ASAS-SN team et al. ASAS-SN ASAS-SN 16:58:37.366 +50:29:25.55 2017-02-01 15:36:00.000 17 V-Johnson PSN SBS 1657+505 ASASSN-17bw ASAS-SN In two epochs, on the rise 2017TNSTR.138....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
901 2017-04-16 17:11:12 Jose Prieto J. L. Prieto, J. Klusmeyer, S. Dong ASAS-SN SN II 1 ASAS-SN We obtained a spectrum of AT2017dbf/PS17chx on UT 2017 Apr. 16.2 with OSMOS mounted on the MDM 2.4m telescope at KPNO. The spectrum of the transient is characteristic of a Type II SN in the plateau phase. After correcting for the redshift of the host, we measure an Halpha expansion velocity of 4700 km/s. 2017TNSCR1523....1P
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
911 2017-04-16 08:54:57 MDM-2.4 / OSMOS J. Klusmeyer ASAS-SN tns_2017dbf_2457859.871502_MDM-2.4_OSMOS_ASAS-SN.txt Object
821 2017-02-27 18:49:57 Jose Prieto J. L. Prieto ASAS-SN SN II 1 ASAS-SN We obtained an optical spectrum of ASASSN-17bw on UT 2017 Feb. 24.47 with OSMOS (range 4000-6850 Angstroms, R ~ 2000) mounted on the MDM 2.4m telescope at KPNO. The spectrum shows strong Balmer and Fe II lines with P-Cygni profiles characteristic of a Type II SN, with strong host galaxy contamination (including nebular emission lines). After correcting the spectrum for the redshift of the host galaxy, we measure an expansion velocity from the H-alpha line of 5800 km/s from the minimum of the P-Cygni trough 2017TNSCR1519....1P
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
831 2017-02-24 11:23:30 MDM-2.4 / OSMOS J. Klusmeyer ASAS-SN tns_2017zu_2457808.9746602_MDM-2.4_OSMOS_ASAS-SN.txt tns_2017zu_2457808.9746602_MDM-2.4_OSMOS_ASAS-SN.fits Object
767 2017-02-05 02:45:49 Xiaofeng Wang Jujia Zhang, Kaixin Lu (YNAO), Xiaofeng Wang (Tsinghua University) None AGN 0.01 1 PTSS A spectrum taken on Feb. 04.89 indicates that this transient is consistent with that of a AGN. 2017TNSCR.157....1Z
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
777 2017-02-04 21:21:36 Lijiang-2.4m / YFOSC 900 Kaixin Lu Jujia Zhang None tns_2017zu_2017-02-04.89_LJT_YFOSC.dat Object

Comments

TNS
System

Sun, 06/23/2019 - 10:43

Object coordinates updated

Object coordinates updated according to AT-report 10767 of Group Pan-STARRS1
Previous RA, DEC: 16:58:37.690, +50:29:26.48 (254.65704, +50.49069)
Updated RA, DEC: 16:58:37.724, +50:29:26.33 (254.657183767, 50.4906480957)

Ofer
Yaron

Thu, 04/20/2017 - 08:45

PS1 report for 2017dbf associated with this object - 2017zu

The coordinates of this object - 2017zu - were updated according to the revised values from ASAS-SN, and object 2017dbf was removed.