RA/DEC (2000)
22:59:57.336 -45:25:53.33
344.9889 -45.43148
Type
SN Ia
Redshift
0.0513
Discovery ReportClassification Report
Reporting Group
ASAS-SN
Discovering Data Source
ASAS-SN
Discovery Date
2018-07-07 03:36:00.000
TNS AT
Y
Public
Y
Host Name
GALEXASC J225957.21-452556.4
Discovery Mag
17.9
Filter
g-Sloan
Reporter/s
K. Z. Stanek, for the ASAS-SN team
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2018ddy - 2018-07-15 05:14:15 LCO-duPont / WFCCD (ASAS-SN)z=
▌Show H at z=vexp= km/s
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▌Show Mg at z=vexp= km/s
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▌Show Si II at z=vexp= km/s
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▌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
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌ASASSN-5_Payne-Gaposchkin_g
   
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
2283 2018-07-15 05:14:15 LCO-duPont / WFCCD L. Khlat (ENS-Lyon), J. L. Prieto (UDP) ASAS-SN tns_2018ddy_2458314.71823_LCO-duPont_WFCCD_ASAS-SN.txt tns_2018ddy_2458314.71823_LCO-duPont_WFCCD_ASAS-SN.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-Sloan ASASSN-5_Payne-Gaposchkin 2018-06-21 02:52:48 - 2018-07-07 03:36:00 2458290.62 - 2458306.65 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
31219 2018-07-07 03:36:00 2458306.65 17.9 ABMag g-Sloan ASASSN-5_Payne-Gaposchkin
31218 2018-06-21 02:52:48 2458290.62 18.9 ABMag g-Sloan ASASSN-5_Payne-Gaposchkin [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
20016 2018-07-07 10:07:19 Krzysztof Stanek K. Z. Stanek, for the ASAS-SN team ASAS-SN ASAS-SN 22:59:57.336 -45:25:53.33 2018-07-07 03:36:00.000 17.9 g-Sloan PSN GALEXASC J225957.21-452556.4 ASASSN-18on ASAS-SN In several epochs, unknown redshift, blue host 2018TNSTR.940....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
2276 2018-07-15 08:47:10 Jose Prieto L. Khlat (ENS-Lyon), J. L. Prieto (UDP), S. Dong (KIAA-PKU) ASAS-SN SN Ia 0.0513 1 ASAS-SN We obtained an optical low-resolution spectrum of supernovae candidates on UT 2018 July 15 with WFCCD mounted on the du Pont 2.5m telescope at Las Campanas Observatory. The spectrum of ASASSN-18on/AT2018ddy is that of a Type Ia-norm after maximum light. SNID (Blondin & Tonry 2007) gives a best fit age of +9.2 days after maximum light and z=0.051 as the redshift, consistent with the host galaxy. The redshift measured from the host galaxy narrow H-alpha line is 0.0513. 2018TNSCR.988....1K
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
2283 2018-07-15 05:14:15 LCO-duPont / WFCCD L. Khlat (ENS-Lyon), J. L. Prieto (UDP) ASAS-SN tns_2018ddy_2458314.71823_LCO-duPont_WFCCD_ASAS-SN.txt tns_2018ddy_2458314.71823_LCO-duPont_WFCCD_ASAS-SN.fits Object

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