RA/DEC (2000)
22:03:15.990 -55:58:36.44
330.816625 -55.976789
Type
SN IIn
Redshift
0.023
Discovery ReportClassification Report
Reporting Group
ASAS-SN
Discovering Data Source
ASAS-SN
Discovery Date
2018-12-20 00:57:36.000
TNS AT
Y
Public
Y
Host Name
2MASX J22031497-5558516
Host Redshift
0.0229
Discovery Mag
16.3
Filter
g-Sloan
Reporter/s
J. Brimacombe, K. Z. Stanek, for the ASAS-SN team
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2018khh - 2018-12-21 02:13:49 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
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▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
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▌Show O V 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
▌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-3_Paczynski_g
 ▌Gaia_Gaia-photometric_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
3320 2018-12-21 02:13:49 SOAR / Goodman R. Cartier R. Cartier None tns_2018khh_2018-12-21_02-13-49_SOAR_Goodman.asci tns_2018khh_2018-12-21_02-13-49_SOAR_Goodman.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-Sloan ASASSN-3_Paczynski 2018-12-20 00:57:36 - 2018-12-20 00:57:36 2458472.54 - 2458472.54 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
47142 2018-12-20 00:57:36 2458472.54 16.3 ABMag g-Sloan ASASSN-3_Paczynski
G-Gaia Gaia_Gaia-photometric 2018-11-27 09:07:12 - 2019-03-02 00:04:19 2458449.88 - 2458544.5029977 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
54915 2019-03-02 00:04:19 2458544.5029977 17.41 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
54914 2018-11-27 09:07:12 2458449.88 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
g-Sloan ASASSN-2_Cassius 2018-12-17 01:12:00 - 2018-12-17 01:12:00 2458469.55 - 2458469.55 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
47141 2018-12-17 01:12:00 2458469.55 17.5 ABMag g-Sloan ASASSN-2_Cassius [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
30449 2019-03-03 20:58:55 Gaia_Bot1 A. Delgado, D. Harrison, S. Hodgkin et al. GaiaAlerts GaiaAlerts 22:03:15.990 -55:58:36.44 2019-03-02 00:04:19.000 17.41 G-Gaia PSN Gaia19aup GaiaAlerts confirmed SN IIn N
26818 2018-12-20 14:28:03 Krzysztof Stanek J. Brimacombe, K. Z. Stanek, for the ASAS-SN team ASAS-SN ASAS-SN 22:03:16.279 -55:58:39.79 2018-12-20 00:57:36.000 16.3 g-Sloan PSN 2MASX J22031497-5558516 ASASSN-18abz ASAS-SN On the rise, confirmed via follow-up imaging, close to a bright star 2018TNSTR1954....1B N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
3312 2018-12-26 15:13:07 Regis Cartier Regis Cartier None SN IIn 0.023 1 2018TNSCR1984....1C
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
3320 2018-12-21 02:13:49 SOAR / Goodman R. Cartier R. Cartier None tns_2018khh_2018-12-21_02-13-49_SOAR_Goodman.asci tns_2018khh_2018-12-21_02-13-49_SOAR_Goodman.fits Object

Comments

TNS
System

Sun, 06/23/2019 - 10:43

Object coordinates updated

Object coordinates updated according to AT-report 30449 of Group GaiaAlerts
Previous RA, DEC: 22:03:16.279, -55:58:39.79 (330.81783, -55.97772)
Updated RA, DEC: 22:03:15.990, -55:58:36.44 (330.816625, -55.976789)

Avishay
Gal-Yam

Thu, 12/27/2018 - 15:11

This is likely a young core-collapse SN with flash features

This is likely a young core-collapse SN with flash features, not necessarily a SN IIn, see for example Yaron et al. 2017