SN 2021bxu
RA/DEC (2000)
02:09:16.455 -23:24:45.40
32.3185608926 -23.4126115112
Type
SN IIb
Redshift
0.0178
Related AstroNotes: 2021-55
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2021-02-06 06:38:52.800
TNS AT
Y
Public
Y
Discovery Mag
17.23
Filter
cyan-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, O. McBrien, M. Fulton, J. Gillanders (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)

Spectra

 SN_2021bxu - 2021-02-08 01:41:48 APO-3.5m / DIS (POISE)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)
Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
88842021-02-08 01:41:48APO-3.5m / DIS2400J. DerKacyJ. DerKacyPOISE tns_2021bxu_2021-02-08_01-41-48.018_APO-3.5m_DIS_POISE.datObjectPOISE
Light Curves
FilterTel / InstObs-date rangePhotometry
y-P1PS1_GPC12021-02-12 05:34:05 - 2021-02-12 05:34:051
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1925952021-02-12 05:34:0518.680.2718.3ABMagy-P1PS1_GPC160Robot
orange-ATLASATLAS-HKO_ATLAS-022021-01-31 06:25:55 - 2021-01-31 06:25:551
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1902232021-01-31 06:25:5519.28ABMagorange-ATLASATLAS-HKO_ATLAS-0230Robot[Last non detection]
cyan-ATLASATLAS-MLO_ATLAS-012021-02-06 06:38:53 - 2021-02-06 06:38:531
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1902242021-02-06 06:38:5317.230.05119.41ABMagcyan-ATLASATLAS-MLO_ATLAS-0130Robot
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
994432021-02-14 04:57:38PS1_Bot1K. C. Chambers, T. de Boer, J. Bulger, J. Fairlamb, M. Huber, C.-C. Lin, T. Lowe, E. Magnier, A. Schultz, R. J. Wainscoat, M. Willman (IfA, University of Hawaii), K. W. Smith, D. R. Young, O. McBrien, J. Gillanders, S. Srivastav, M. Fulton, S. J. Smartt, D. O'Neill, P. Clark, S. Sim (Queen's University Belfast), D. E. Wright (University of Minnesota)Pan-STARRSPan-STARRS02:09:16.455-23:24:45.402021-02-12 05:34:04.80018.68y-P1PSNPS21ablPan-STARRS
984912021-02-06 11:30:01ATLAS_Bot1J. 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, O. McBrien, M. Fulton, J. Gillanders (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)ATLASATLAS02:09:16.467-23:24:45.152021-02-06 06:38:52.80017.23cyan-ATLASPSNATLAS21dovATLAS
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
88742021-02-12 00:40:14jmderkacyJames DerKacy (Oklahoma), on behalf of POISEPOISESN IIb0.0178POISEWe report the classification of SN2021bxu as a 1993J-like Type IIb supernova in ESO 478 - G 006 (z = 0.017786, DM = 34.06). Classification with DASH (Muthukrishna et al. 2019, ApJ, 885, 85) suggests that SN 2021bxu is a Type IIb between -18 and -14 days with >99.9% probability. SN 2021bxu shows spectroscopic similarities to spectra SN 1993J at -16.7 days and SN 2011fu at -14.0 days, suggesting that the supernova is still in the shock cooling phase. Further follow-up is encouraged.2021TNSCR.447....1D

Comments

Object coordinates updated according to AT-report 99443 of Group Pan-STARRS1
Previous RA, DEC: 02:09:16.467, -23:24:45.15 (32.318611, -23.412541)
Updated RA, DEC: 02:09:16.455, -23:24:45.40 (32.3185608926, -23.4126115112)