RA/DEC (2000)
16:14:20.680 +03:13:55.09
243.586167 +3.231969
Type
SN Ia
Redshift
0.02
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2018-08-08 08:13:55.000
TNS AT
Y
Public
Y
Discovery Mag
18.4
Filter
cyan-ATLAS
Reporter/s
J. Tonry, B. Stalder, L. Denneau, A. Heinze, H. Weiland (IfA, University of Hawaii), A. Rest (STScI), K. W. Smith, S. J. Smartt, D. R. Young, M. Fulton, O. McBrien, D. O'Neill, P. Clark (Queen's University Belfast)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2018etm - 2018-08-11 18:58:19 UH88 / SNIFS (SCAT)z=
 ▌SN_2018etm - 2018-08-08 04:07:24 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
 ▌Gaia_Gaia-photometric_G
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_cyan
   
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
2485 2018-08-11 18:58:19 UH88 / SNIFS 1200 M.A.Tucker SCAT tns_2018etm_2458342.2905_UH88_SNIFS_SCAT.dat Object Reduced using a summit quick-reduction pipeline, care should be taken before re-using this spectrum for further studies.
2509 2018-08-08 04:07:24 P60 / SEDM 2430 SEDmRobot D. Neill ZTF tns_2018etm_2018-08-08_04-07-24_P60_SED-Machine_ZTF.ascii Object 2021-08-13
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2018-07-13 05:02:24 - 2018-07-13 05:02:24 2458312.71 - 2458312.71 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
33848 2018-07-13 05:02:24 2458312.71 20.56 ABMag r-ZTF P48_ZTF-Cam 30 ZTF [Last non detection]
g-ZTF P48_ZTF-Cam 2018-08-07 04:23:31 - 2018-08-13 04:03:21 2458337.6829977 - 2458343.6689931 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
33850 2018-08-13 04:03:21 2458343.6689931 17.05 ABMag g-ZTF P48_ZTF-Cam 30 ZTF
33849 2018-08-07 04:23:31 2458337.6829977 19.07 ABMag g-ZTF P48_ZTF-Cam 30 ZTF
G-Gaia Gaia_Gaia-photometric 2018-03-19 01:58:04 - 2018-08-12 21:37:26 2458196.5819907 - 2458343.4009954 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
33837 2018-08-12 21:37:26 2458343.4009954 17.28 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
33836 2018-03-19 01:58:04 2458196.5819907 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2018-08-06 08:44:09 - 2018-08-06 08:44:09 2458336.8639931 - 2458336.8639931 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
33354 2018-08-06 08:44:09 2458336.8639931 19.3 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
cyan-ATLAS ATLAS-HKO_ATLAS-02 2018-08-08 08:13:55 - 2018-08-08 08:13:55 2458338.8429977 - 2458338.8429977 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
33355 2018-08-08 08:13:55 2458338.8429977 18.4 0.051 19.65 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 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 Bibcode Unreal Auto classification
21641 2018-08-14 21:24:21 ZTF_Bot1 C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration et al. ZTF ZTF 16:14:20.682 +03:13:55.02 2018-08-07 04:23:31.000 19.07 g-ZTF PSN ZTF18abltdkd ZTF N
21635 2018-08-14 17:11:36 Gaia_Bot1 A. Delgado,D. Harrison,S. Hodgkin et al. GaiaAlerts GaiaAlerts 16:14:20.680 +03:13:55.09 2018-08-12 21:37:26.000 17.28 G-Gaia PSN Gaia18ced GaiaAlerts confirmed SN Ia, aka SN 2018etm N
21366 2018-08-08 17:55:04 ATLAS_Bot1 J. Tonry,B. Stalder,L. Denneau et al. ATLAS ATLAS 16:14:20.679 +03:13:55.08 2018-08-08 08:13:55.000 18.4 cyan-ATLAS PSN ATLAS18tht ATLAS 2018TNSTR1123....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
2502 2018-08-13 16:05:13 ZTF_Bot1 C. Fremling, A. Dugas, Y. Sharma (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN Ia 0.02 1 Add ZTF 2018TNSCR2129....1F
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
2509 2018-08-08 04:07:24 P60 / SEDM 2430 SEDmRobot D. Neill ZTF tns_2018etm_2018-08-08_04-07-24_P60_SED-Machine_ZTF.ascii Object 2021-08-13
2478 2018-08-12 09:05:49 Michael Tucker Michael A. Tucker, Benjamin J. Shappee (IfA, UH Manoa) SCAT SN Ia 0.026 1 Add SCAT SN Ia near maximum light (SNID phase -1 +/- 8), host galaxy unclear. Straddles 2 SDSS galaxies (http://skyserver.sdss.org/dr13/en/tools/chart/navi.aspx?opt=G&ra=243.586166667&dec=3.23196666667&scale=0.1), matches photoZ at ~2.7sigma for upper right galaxy but inconsistent with other possible host (photoZ > 0.5). SNID redshift = 0.026 +/- 0.006. 2018TNSCR1160....1T
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
2485 2018-08-11 18:58:19 UH88 / SNIFS 1200 M.A.Tucker SCAT tns_2018etm_2458342.2905_UH88_SNIFS_SCAT.dat Object Reduced using a summit quick-reduction pipeline, care should be taken before re-using this spectrum for further studies.

Comments

TNS
System

Sun, 06/23/2019 - 10:43

Object coordinates updated

Object coordinates updated according to AT-report 21635 of Group GaiaAlerts
Previous RA, DEC: 16:14:20.679, +03:13:55.08 (243.586161, +3.231966)
Updated RA, DEC: 16:14:20.680, +03:13:55.09 (243.586167, 3.231969)

Ofer
Yaron

Tue, 08/14/2018 - 07:32

Redshift updated to 0.026, according to the 1st class. report

As noted by Michael Tucker - This object sits between 2 SDSS galaxies, which have z ~ 0.1, 0.5, and the SNID z is 0.026, consistent with the lower redshift galaxy. (With the higher z distance modulus, this is an absolute mag of ~-24.)