RA/DEC (2000)
22:04:59.856 -56:04:57.29
331.2494 -56.08258
Type
SN II
Redshift
0.0229
Discovery ReportClassification Report
Reporting Group
ASAS-SN
Discovering Data Source
ASAS-SN
Discovery Date
2018-07-07 05:45:36.000
TNS AT
Y
Public
Y
Host Name
APMUKS(BJ) B220137.90-561932.4
Discovery Mag
17.4
Filter
g-Sloan
Reporter/s
K. Z. Stanek, for the ASAS-SN team
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2018ddx - 2018-07-14 06:56:45 LCO-duPont / WFCCD (ASAS-SN)z=
▌Show H at z=vexp= km/s
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▌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
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▌Show Tellurics 
▌Show Galaxy lines at z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌ASASSN-3_Paczynski_g
 ▌ASASSN-2_Cassius_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
2273 2018-07-14 06:56:45 LCO-duPont / WFCCD L. Khlat (ENS-Lyon), J. L. Prieto (UDP) ASAS-SN tns_2018ddx_2458313.78942_LCO-duPont_WFCCD_ASAS-SN.txt tns_2018ddx_2458313.78942_LCO-duPont_WFCCD_ASAS-SN.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-Sloan ASASSN-3_Paczynski 2018-07-02 06:28:48 - 2018-07-02 06:28:48 2458301.77 - 2458301.77 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
31216 2018-07-02 06:28:48 2458301.77 17.7 ABMag g-Sloan ASASSN-3_Paczynski [Last non detection]
g-Sloan ASASSN-2_Cassius 2018-07-07 05:45:36 - 2018-07-07 05:45:36 2458306.74 - 2458306.74 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
31217 2018-07-07 05:45:36 2458306.74 17.4 ABMag g-Sloan ASASSN-2_Cassius
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
20015 2018-07-07 09:48:41 Krzysztof Stanek K. Z. Stanek, for the ASAS-SN team ASAS-SN ASAS-SN 22:04:59.856 -56:04:57.29 2018-07-07 05:45:36.000 17.4 g-Sloan PSN APMUKS(BJ) B220137.90-561932.4 ASASSN-18om ASAS-SN Unknown redshift, irregular blue host galaxy 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
2266 2018-07-14 10:21:59 Jose Prieto L. Khlat (ENS-Lyon), J. L. Prieto (UDP), S. Dong (KIAA-PKU) ASAS-SN SN II 0.0229 1 ASAS-SN We obtained an optical low-resolution spectrum of supernovae candidates on UT 2018 July 14 with WFCCD mounted on the du Pont 2.5m telescope at Las Campanas Observatory. The spectrum of ASASSN-18om/AT2018ddx is that of a Type II supernova before maximum light, showing a blue continuum and broad/weak H-alpha in emission. SNID gives a best fit subtype SN IIb with an age of -7.4 days before maximum light and z=0.027 as the redshift. The redshift of the host galaxy is 0.0229 measured from the narrow H-alpha emission from the host. 2018TNSCR.980....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
2273 2018-07-14 06:56:45 LCO-duPont / WFCCD L. Khlat (ENS-Lyon), J. L. Prieto (UDP) ASAS-SN tns_2018ddx_2458313.78942_LCO-duPont_WFCCD_ASAS-SN.txt tns_2018ddx_2458313.78942_LCO-duPont_WFCCD_ASAS-SN.fits Object

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