RA/DEC (2000)
00:55:08.916 -37:44:19.85
13.787152 -37.738846
Type
SN IIn-pec
Redshift
Discovery ReportClassification Report
Related AstroNotes: 2020-253
Reporting Group
DLT40
Discovering Data Source
DLT40
Discovery Date
2020-12-12 13:14:45.888
TNS AT
Y
Public
Y
Host Name
NGC0300
Discovery Mag
18.4205
Filter
Clear-
Reporter/s
S. Valenti, D.J.Sand, S. Wyatt, M. Lundquist, R. Amaro, J. Andrews, J. Jencson, Y. Dong, S. Davis, D. Janzen
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2020acli - 2020-12-13 00:31:38 Gemini-S / GMOS-S (DLT40)z=
▌Show H at z=vexp= km/s
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),

Light curves

 ▌ATLAS-MLO_ATLAS-01_cyan
 ▌ATLAS-HKO_ATLAS-02_cyan
 ▌Other_Other_Clear
   
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
8178 2020-12-13 00:31:38 Gemini-S / GMOS-S Gemini Queue Observer DLT40 tns_2020acli_2020-12-13_00-31-38_Gemini-S_GMOS-S_DLT40.txt Object Quick look classification from Gemini-S GMOS spectrum.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
cyan-ATLAS ATLAS-MLO_ATLAS-01 2020-12-12 06:23:02 - 2020-12-12 06:23:02 2459195.766 - 2459195.766 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
178653 2020-12-12 06:23:02 2459195.766 18.759 0.143 19.64 ABMag cyan-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
cyan-ATLAS ATLAS-HKO_ATLAS-02 2020-12-10 07:32:10 - 2020-12-10 07:32:10 2459193.814 - 2459193.814 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
178652 2020-12-10 07:32:10 2459193.814 19.41 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
Clear- Other_Other 2020-12-11 03:54:36 - 2020-12-12 03:37:19 2459194.66292 - 2459195.65091 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
178609 2020-12-12 03:37:19 2459195.65091 18.4205 0.13 ABMag Clear- Other_Other 60 Robot Prompt5 0.4m
178608 2020-12-11 03:54:36 2459194.66292 18.5358 ABMag Clear- Other_Other 60 Robot [Last non detection] Prompt5 0.4m
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
92601 2020-12-12 16:54:04 ATLAS_Bot1 J. Tonry, L. Denneau, A. Heinze et al. ATLAS ATLAS 00:55:08.916 -37:44:19.85 2020-12-12 06:23:02.400 18.759 cyan-ATLAS PSN ATLAS20bhnu ATLAS N
92578 2020-12-12 13:14:48 DLT40_bot1 S. Valenti, D.J.Sand, S. Wyatt et al. DLT40 DLT40 00:55:08.900 -37:44:19.94 2020-12-12 13:14:45.888 18.4205 Clear- PSN NGC0300 DLT20aa DLT40 2020TNSTR3762....1V N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
8166 2020-12-13 07:33:08 Michael Lundquist M. Lundquist (UA), J. Andrews (UA), S. Valenti (UC-Davis), D.J.Sand (UA), S. Wyatt (UA), R. Amaro (UA), J. Jencson (UA), Y. Dong (UC-Davis), S. Davis (UC-Davis), D. Janzen (USask) DLT40 SN IIn-pec 1 DLT40 A Gemini-S GMOS spectrum was taken on 2020-12-13T00:31:38, approximately 24 hours after discovery. The spectrum showed strong hydrogen balmer emission, with a P Cygni absorption feature at -4000 km/s. Using the classification software GELATO (Harutyunyan et al. 2008), the best-fitting template corresponds to the peculiar type IIn SN2009ip during the phase prior to its giant eruption. There is very little reddening towards AT2020acli, yet the absolute magnitude is several magnitudes fainter than SN 2009ip in a similar phase. Some similarity is also found with low luminosity type II SNe (e.g. SN1999br, Pastorello et al. 2004), but AT2020acli is also in this case several magnitudes fainter than low luminosity SNe IIP. 2020TNSCR3777....1L
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
8178 2020-12-13 00:31:38 Gemini-S / GMOS-S Gemini Queue Observer DLT40 tns_2020acli_2020-12-13_00-31-38_Gemini-S_GMOS-S_DLT40.txt Object Quick look classification from Gemini-S GMOS spectrum.

Comments

David
Sand

Mon, 12/14/2020 - 21:07

Classification Update

Upon feedback from the community and our own analysis, we believe this object to be a nova in NGC300.

Libert
Monard

Mon, 12/14/2020 - 10:52

Observations from CBA KKO: 2020 dec 13.85UT <19.5CR

Instrumentation: telescope: 30cm f/8 Meade RCX400 / CCD camera: SBIG ST8-XME / stack of 5 unfiltered images with total exp 130sec

The OT was not seen to a limiting magnitude of (at least) 19.5CR at UT 2020 Dec 13.85

psn_ngc0300_20dec13.fits
TNS
System

Sat, 12/12/2020 - 16:30

Object coordinates updated

Object coordinates updated according to AT-report 92601 of Group ATLAS
Previous RA, DEC: 00:55:08.900, -37:44:19.94 (13.787083, -37.738872)
Updated RA, DEC: 00:55:08.916, -37:44:19.85 (13.787152, -37.738846)