RA/DEC (2000)
03:00:35.629 +11:50:29.73
45.1484533876 +11.8415928473
Type
SN IIb
Redshift
0.026
Discovery ReportClassification Report
Related AstroNotes: 2021-246
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2021-09-17 10:52:19.200
TNS AT
Y
Public
Y
Discovery Mag
18.162
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, University of Hawaii), B. Stalder (LSST), A. Rest (STScI), C. Stubbs (Harvard University), K. W. Smith, S. J. Smartt, D. R. Young, S. Srivastav, M. Fulton, J. Gillanders, C. Richman (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2021zby - 2021-10-09 02:44:23 LT / SPRAT (OxQUB)z=
 ▌SN_2021zby - 2021-09-20 12:47:44 UH88 / SNIFS (SCAT)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
z-step:   v-step: 
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌PS2_GPC2_w
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌PS1_GPC1_w
   
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
11129 2021-10-09 02:44:23 LT / SPRAT 1800 Robotic OxQUB tns_2021zby_2021-10-09_02-44-23_LT_SPRAT_QUB.txt Object This spectrum was obtained with the Liverpool Telescope (Steele, Iain A., et al. "The Liverpool Telescope: performance and first results." Ground-based Telescopes. Vol. 5489. International Society for Optics and Photonics, 2004.) and reduced using the integrated quick reduction pipeline.
10975 2021-09-20 12:47:44 UH88 / SNIFS 1800 Hinkle Tucker SCAT tns_2021zby_2021-09-20_12-47-44_UH88_SNIFS_SCAT.dat Object Reduced with a summit-based quick-reduction pipeline.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
w-P1 PS2_GPC2 2021-11-05 08:18:14 - 2021-11-05 08:18:14 2459523.846 - 2459523.846 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
258132 2021-11-05 08:18:14 2459523.846 18.38 0.03 22 ABMag w-P1 PS2_GPC2 45 Robot
orange-ATLAS ATLAS-MLO_ATLAS-01 2021-09-12 12:48:58 - 2021-09-12 12:48:58 2459470.034 - 2459470.034 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
242540 2021-09-12 12:48:58 2459470.034 18.37 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2021-09-17 10:52:19 - 2021-09-17 10:52:19 2459474.953 - 2459474.953 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
242541 2021-09-17 10:52:19 2459474.953 18.162 0.135 18.85 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
w-P1 PS1_GPC1 2021-10-31 07:52:19 - 2021-10-31 07:52:19 2459518.828 - 2459518.828 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
250372 2021-10-31 07:52:19 2459518.828 18.22 0.02 22 ABMag w-P1 PS1_GPC1 45 Robot
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
131347 2021-12-20 18:24:03 PS2_Bot1 K. C. Chambers, T. de Boer, J. Bulger et al. Pan-STARRS Pan-STARRS 03:00:35.629 +11:50:29.73 2021-11-05 08:18:14.400 18.38 w-P1 PSN PS21lsx Pan-STARRS N
127610 2021-11-01 09:14:52 PS1_Bot1 K. C. Chambers, T. de Boer, J. Bulger et al. Pan-STARRS Pan-STARRS 03:00:35.626 +11:50:29.74 2021-10-31 07:52:19.200 18.22 w-P1 PSN PS21lsx Pan-STARRS N
123751 2021-09-17 14:46:55 ATLAS_Bot1 J. Tonry, L. Denneau, A. Heinze et al. ATLAS ATLAS 03:00:35.630 +11:50:29.51 2021-09-17 10:52:19.200 18.162 orange-ATLAS PSN ATLAS21bixf ATLAS 2021TNSTR3216....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
11075 2021-10-14 19:19:54 Michael Fulton M. Fulton, S. J. Smartt, S. A. Sim, S. Srivastav, K. W. Smith, D. R. Young, J. Gillanders, T. Moore (Queen's University Belfast). OxQUB SN IIb 0.026 1 OxQUB Several matches with SNe IIb close to maximum. Redshift from the known host NGC 1166 (on NED). 2021TNSCR3521....1F
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
11129 2021-10-09 02:44:23 LT / SPRAT 1800 Robotic OxQUB tns_2021zby_2021-10-09_02-44-23_LT_SPRAT_QUB.txt Object This spectrum was obtained with the Liverpool Telescope (Steele, Iain A., et al. "The Liverpool Telescope: performance and first results." Ground-based Telescopes. Vol. 5489. International Society for Optics and Photonics, 2004.) and reduced using the integrated quick reduction pipeline.
10921 2021-09-23 20:21:09 Jason Hinkle Jason Hinkle on behalf of SCAT SCAT SN II 0.025965 1 SCAT Blue continuum with H and He features suggest a SN II. Redshift from NED. 2021TNSCR3283....1H
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
10975 2021-09-20 12:47:44 UH88 / SNIFS 1800 Hinkle Tucker SCAT tns_2021zby_2021-09-20_12-47-44_UH88_SNIFS_SCAT.dat Object Reduced with a summit-based quick-reduction pipeline.

Comments

TNS
System

Mon, 12/20/2021 - 17:30

Object coordinates updated

Object coordinates updated according to AT-report 131347 of Group Pan-STARRS1
Previous RA, DEC: 03:00:35.626, +11:50:29.74 (45.1484415912, +11.8415954534)
Updated RA, DEC: 03:00:35.629, +11:50:29.73 (45.1484533876, 11.8415928473)

TNS
System

Mon, 11/01/2021 - 08:30

Object coordinates updated

Object coordinates updated according to AT-report 127610 of Group Pan-STARRS1
Previous RA, DEC: 03:00:35.630, +11:50:29.51 (45.14845625, +11.84153125)
Updated RA, DEC: 03:00:35.626, +11:50:29.74 (45.1484415912, 11.8415954534)