RA/DEC (2000)
08:13:18.370 +34:55:56.14
123.326542 +34.932261
Type
SN Ia
Redshift
0.02
Reporting Group
ASAS-SN
Discovering Data Source
ASAS-SN
Discovery Date
2021-03-29 04:01:55.200
TNS AT
Y
Public
Y
Host Name
CGCG 178-036
Host Redshift
0.017542
Discovery Mag
16
Filter
g-Sloan
Reporter/s
K. Z. Stanek, for the ASAS-SN team

Spectra

 SN_2021hfu - 2021-03-29 21:42:10 LT / SPRAT (ASAS-SN)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

 ASASSN-4_Leavitt_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
9255 2021-03-29 21:42:10 LT / SPRAT 900 D Bersier ASAS-SN tns_2021hfu_2021-03-29_21-42-10_LT_SPRAT_ASAS-SN.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-Sloan ASASSN-4_Leavitt 2021-03-20 07:37:55 - 2021-03-29 04:01:55 2459293.818 - 2459302.668 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
201135 2021-03-29 04:01:55 2459302.668 16 ABMag g-Sloan ASASSN-4_Leavitt
201134 2021-03-20 07:37:55 2459293.818 18 ABMag g-Sloan ASASSN-4_Leavitt [Last non detection]
G-Gaia Gaia_Gaia-photometric 2021-03-06 13:01:55 - 2021-04-15 18:11:31 2459280.043 - 2459320.258 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
207804 2021-04-15 18:11:31 2459320.258 16.13 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
207803 2021-03-06 13:01:55 2459280.043 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
107219 2021-04-18 20:01:57 Gaia_Bot1 S.T. Hodgkin, E. Breedt, A. Delgado et al. GaiaAlerts GaiaAlerts 08:13:18.370 +34:55:56.14 2021-04-15 18:11:31.200 16.13 G-Gaia PSN Gaia21bxh GaiaAlerts Gaia transient close to confirmed SN Ia ASASSN-21ek N
104140 2021-03-29 12:43:10 Krzysztof Stanek K. Z. Stanek, for the ASAS-SN team ASAS-SN ASAS-SN 08:13:18.449 +34:55:56.82 2021-03-29 04:01:55.200 16 g-Sloan PSN CGCG 178-036 ASASSN-21ek ASAS-SN Present in several epochs, a possible nuclear transient, so could also be a TDE 2021TNSTR.950....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
9245 2021-03-30 16:16:51 David Bersier David Bersier ASAS-SN SN Ia 0.02 1 ASAS-SN redshift from template matching, not from host lines 2021TNSCR.962....1B
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
9255 2021-03-29 21:42:10 LT / SPRAT 900 D Bersier ASAS-SN tns_2021hfu_2021-03-29_21-42-10_LT_SPRAT_ASAS-SN.dat Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 107219 of Group GaiaAlerts
Previous RA, DEC: 08:13:18.449, +34:55:56.82 (123.32687, +34.93245)
Updated RA, DEC: 08:13:18.370, +34:55:56.14 (123.326542, 34.932261)