RA/DEC (2000)
13:21:54.850 +16:44:39.73
200.478542 +16.744369
Type
SN IIn
Redshift
0.075
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2021-03-20 11:09:36.000
TNS AT
Y
Public
Y
Discovery Mag
19.146
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, O. McBrien, M. Fulton, J. Gillanders, C. Webb (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)

Spectra

 SN_2021gpw - 2021-04-04 23:32:01 LT / SPRAT (ZTF)z=
Show H at z=vexp= km/s
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Show [Ca II] at z=vexp= km/s
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Show Tellurics 
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 P48_ZTF-Cam_r
 P48_ZTF-Cam_g
 Gaia_Gaia-photometric_G
 ATLAS-MLO_ATLAS-01_orange
 ATLAS-HKO_ATLAS-02_cyan
   
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
9293 2021-04-04 23:32:01 LT / SPRAT LTbot Perley ZTF tns_2021gpw_2021-04-04_23-32-01_LT_SPRAT_ZTF.spec Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2021-03-18 08:21:07 - 2021-03-20 06:08:38 2459291.848 - 2459293.756 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
200631 2021-03-20 06:08:38 2459293.756 19.44 ABMag r-ZTF P48_ZTF-Cam 30 ZTF
200630 2021-03-18 08:21:07 2459291.848 20.58 ABMag r-ZTF P48_ZTF-Cam 30 ZTF [Last non detection]
g-ZTF P48_ZTF-Cam 2021-03-24 07:36:29 - 2021-03-24 07:36:29 2459297.817 - 2459297.817 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
200632 2021-03-24 07:36:29 2459297.817 18.69 ABMag g-ZTF P48_ZTF-Cam 30 ZTF
G-Gaia Gaia_Gaia-photometric 2021-01-29 15:50:24 - 2021-06-22 17:26:53 2459244.16 - 2459388.227 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
223431 2021-06-22 17:26:53 2459388.227 18.26 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
223430 2021-01-29 15:50:24 2459244.16 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2021-03-20 11:09:36 - 2021-03-20 11:09:36 2459293.965 - 2459293.965 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
199672 2021-03-20 11:09:36 2459293.965 19.146 0.11 19.95 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
cyan-ATLAS ATLAS-HKO_ATLAS-02 2021-03-18 11:34:05 - 2021-03-18 11:34:05 2459291.982 - 2459291.982 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
199671 2021-03-18 11:34:05 2459291.982 19.8 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 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 Bibcode Unreal Auto classification
114861 2021-06-23 22:29:38 Gaia_Bot1 S.T. Hodgkin,E. Breedt,A. Delgado et al. GaiaAlerts GaiaAlerts 13:21:54.850 +16:44:39.73 2021-06-22 17:26:52.800 18.26 G-Gaia Other Gaia21czj GaiaAlerts confirmed SN IIn N
103866 2021-03-24 19:59:19 ZTF_Bot1 C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration et al. ZTF ZTF 13:21:54.865 +16:44:39.62 2021-03-20 06:08:38.400 19.44 r-ZTF PSN ZTF21aaqhqke ZTF N
103378 2021-03-20 20:41:48 ATLAS_Bot1 J. Tonry,L. Denneau,A. Heinze et al. ATLAS ATLAS 13:21:54.837 +16:44:39.54 2021-03-20 11:09:36.000 19.146 orange-ATLAS PSN ATLAS21iwv ATLAS 2021TNSTR.836....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
9283 2021-04-05 01:55:27 Daniel Perley Daniel Perley (LJMU) ZTF SN IIn 0.075 1 ZTF Spectrum is featureless except for a narrow+intermediate width line at the location of redshifted H-alpha emission. (H-beta, probably attributable to the host, is also seen.) Based on this, and the high luminosity and slow evolution, the probable classification is SN IIn. The SPRAT spectrum does not separately resolve the H-alpha and NII lines, and a higher-resolution spectrum to confirm that the profile of H-alpha is not due to a blend of these features would still be useful. 2021TNSCR1071....1P
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
9293 2021-04-04 23:32:01 LT / SPRAT LTbot Perley ZTF tns_2021gpw_2021-04-04_23-32-01_LT_SPRAT_ZTF.spec Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 114861 of Group GaiaAlerts
Previous RA, DEC: 13:21:54.865, +16:44:39.62 (200.4786062, +16.7443396)
Updated RA, DEC: 13:21:54.850, +16:44:39.73 (200.478542, 16.744369)

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 103866 of Group ZTF
Previous RA, DEC: 13:21:54.837, +16:44:39.54 (200.478486, +16.744316)
Updated RA, DEC: 13:21:54.865, +16:44:39.62 (200.4786062, 16.7443396)