RA/DEC (2000)
00:55:26.410 -74:18:40.10
13.860042 -74.311139
Type
SN Ia
Redshift
0.034
Discovery ReportClassification Report
Reporting Group
ASAS-SN
Discovering Data Source
ASAS-SN
Discovery Date
2018-07-22 23:45:36.000
TNS AT
Y
Public
Y
Host Name
2MASX J00552674-7418379
Discovery Mag
17.3
Filter
g-Sloan
Reporter/s
K. Z. Stanek, for the ASAS-SN team
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2018ebx - 2018-07-26 10:16:58 SOAR / Goodman (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
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▌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
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▌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

 ▌ASASSN-5_Payne-Gaposchkin_g
 ▌Gaia_Gaia-photometric_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
2349 2018-07-26 10:16:58 SOAR / Goodman 580 R. Cartier R. Cartier None tns_2018ebx_2018-07-26_10-16-58_SOAR_Goodman.asci tns_2018ebx_2018-07-26_10-16-58_SOAR_Goodman.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-Sloan ASASSN-5_Payne-Gaposchkin 2018-07-09 00:43:12 - 2018-07-22 23:45:36 2458308.53 - 2458322.49 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
32330 2018-07-22 23:45:36 2458322.49 17.3 ABMag g-Sloan ASASSN-5_Payne-Gaposchkin
32329 2018-07-09 00:43:12 2458308.53 18.3 ABMag g-Sloan ASASSN-5_Payne-Gaposchkin [Last non detection]
G-Gaia Gaia_Gaia-photometric 2018-06-12 22:06:14 - 2018-07-22 19:58:04 2458282.4209954 - 2458322.3319907 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
34484 2018-07-22 19:58:04 2458322.3319907 16.93 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
34483 2018-06-12 22:06:14 2458282.4209954 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [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
21953 2018-08-29 14:22:09 Gaia_Bot1 A. Delgado, D. Harrison, S. Hodgkin et al. GaiaAlerts GaiaAlerts 00:55:26.410 -74:18:40.10 2018-07-22 19:58:04.000 16.93 G-Gaia PSN Gaia18cih GaiaAlerts confirmed SN Ia, aka SN 2018ebx N
20797 2018-07-23 01:12:52 Krzysztof Stanek K. Z. Stanek, for the ASAS-SN team ASAS-SN ASAS-SN 00:55:26.422 -74:18:42.19 2018-07-22 23:45:36.000 17.3 g-Sloan PSN 2MASX J00552674-7418379 ASASSN-18px ASAS-SN In several epochs, unknown redshift host, close to the SMC, so could also be a transient in that galaxy 2018TNSTR1017....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
2342 2018-07-28 22:41:08 Regis Cartier R. Cartier, J. Espinoza (CTIO), C. Contreras (STScI), A. Boltom (NOAO), C. Inserra (Southampton), E. Kankare (QUB), K. Maguire ( None SN Ia 0.034 1 1 From the host galaxy narrow emission lines we measured a redshift of 0.034, but the best fit templates are of SNe Ia at z~0.027 at one week past maximum. The SN seems to be peculiar, because ASAS-SN reported V = 16.50 mag on 2018-07-21 and g=17.3 mag on 2018-07-22, suggesting an intrinsic red colour or a fast decline in the SN brightness. The classification spectrum does not look peculiarly red, suggesting a fast photometric evolution rather than red colours. We encourage photometric follow-up. 2018TNSCR1049....1C
Related files
File Comments Last Modified (UT) Modified By
tns_2018ebx_classrep_2342.ps 2018-07-28 22:41:08 Regis Cartier
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
2349 2018-07-26 10:16:58 SOAR / Goodman 580 R. Cartier R. Cartier None tns_2018ebx_2018-07-26_10-16-58_SOAR_Goodman.asci tns_2018ebx_2018-07-26_10-16-58_SOAR_Goodman.fits Object

Comments

TNS
System

Sun, 06/23/2019 - 10:43

Object coordinates updated

Object coordinates updated according to AT-report 21953 of Group GaiaAlerts
Previous RA, DEC: 00:55:26.422, -74:18:42.19 (13.86009, -74.31172)
Updated RA, DEC: 00:55:26.410, -74:18:40.10 (13.860042, -74.311139)

Malhar Raghunath
Kendurkar

Thu, 07/26/2018 - 21:41

AT 2018ebx

We Observed PSN AT 2018ebx on 2018-07-25.032

C = 17.42 +/- 0.20

Cheers,
Malhar R. Kendurkar

AT_2018ebx.jpg