AT 2021bl
RA/DEC (2000)
01:33:21.998 +30:33:01.25
23.3416587 +30.5503474
Type
Nova
Redshift
0.0002
Reporting Group
XOSS
Discovering Data Source
XOSS
Discovery Date
2021-01-03 16:30:20.000
TNS AT
Y
Public
Y
Host Name
M33
Discovery Mag
17.9
Filter
Clear-
Reporter/s
Mi Zhang, Xing Gao (Xingming Observatory)

Spectra

 AT_2021bl - 2021-01-07 02:25:54 P60 / SEDM (ZTF)z=
 AT_2021bl - 2021-01-07 00:00:00 P60 / SEDM (None)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
89632021-01-07 02:25:54P60 / SEDM2700SEDmRobotautoZTF tns_2021bl_2021-01-07_02-25-53.756825_P60_SEDM_ZTF.asciiObjectZTF
85412021-01-07 00:00:00P60 / SEDM-None tns_2021bl_2021-01-07_P60_SEDM.txtObject
Light Curves
FilterTel / InstObs-date rangePhotometry
Clear-Other_Other2020-12-31 13:09:58 - 2021-01-09 02:03:5010
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1962642021-01-09 02:03:5020.10.2520.3VegaMagClear-Other_Other600J. Bryan40-cm f/10 Ritchey-Chretien telescope, cooled CMOS camera, approximate R-band magnitude
1962632021-01-09 01:51:0120.10.2520.3VegaMagClear-Other_Other600J. Bryan40-cm f/10 Ritchey-Chretien telescope, cooled CMOS camera, approximate R-band magnitude
1962622021-01-09 01:37:4720.10.2520.3VegaMagClear-Other_Other600J.Bryan40-cm f/10 Ritchey-Chretien telescope, cooled CMOS camera, approximate R-band magnitude
1962612021-01-04 02:32:4817.40.2521VegaMagClear-Other_Other600J. Bryan40-cm f/10 Ritchey-Chretien telescope, cooled CMOS camera, approximate R-band magnitude
1962602021-01-04 02:19:3917.30.2521VegaMagClear-Other_Other600J. Bryan40-cm f/10 Ritchey-Chretien telescope, cooled CMOS camera, approximate R-band magnitude
1962592021-01-04 02:04:2417.20.2521VegaMagClear-Other_Other600J. Bryan40-cm f/10 Ritchey-Chretien telescope, cooled CMOS camera, approximate R-band magnitude
1962582021-01-04 01:48:5917.20.2521VegaMagClear-Other_Other600J. Bryan40-cm f/10 Ritchey-Chretien telescope, cooled CMOS camera, approximate R-band magnitude
1833282021-01-03 16:30:2017.918.5ABMagClear-Other_Other300Xing GaoThe transient was discovered on several 300-s survey images (limiting mag about 18.5) taken by Xing Gao using NEXT at Xingming Observatory #3 (N88). Images can be found at: http://xjltp.china-vo.org/xm48mz.html
1962572021-01-03 03:05:0220.9VegaMagClear-Other_Other600J. Bryan[Last non detection] As observed from Georgetown, Texas with a 40-cm f/10 Ritchey-Chretien telescope and cooled CMOS camera. Approximate R-band magnitudes of the nova were derived with Astrometrica software and UCAC4. The estimated uncertainty is ± 0.25 mag.
1833272020-12-31 13:09:5818.5ABMagClear-Other_Other300Xing Gao[Last non detection]
g-ZTFP48_ZTF-Cam2021-01-02 03:43:12 - 2021-01-04 04:50:532
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1838332021-01-04 04:50:5318.29ABMagg-ZTFP48_ZTF-Cam30ZTF
1838312021-01-02 03:43:1220.83ABMagg-ZTFP48_ZTF-Cam30ZTF[Last non detection]
r-ZTFP48_ZTF-Cam2021-01-04 04:20:38 - 2021-01-04 04:20:381
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1838322021-01-04 04:20:3817.78ABMagr-ZTFP48_ZTF-Cam30ZTF
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
1013692021-03-06 02:46:47bryanJames Bryan01:33:21.990+30:33:01.202021-01-04 01:48:58.75217.2Clear-PNVThis reports an independent detection and additional photometry of PNV J01332200+3033012 (aka XM48MZ, AT2021bl), a recent nova in M33 originally announced by Mi Zhang and Xing Gao at the Xingming Observatory.
955422021-01-05 15:59:26ZTF_Bot1C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaborationZTFZTF01:33:21.998+30:33:01.252021-01-04 04:20:38.40017.78r-ZTFPSNZTF21aaarlbpZTF
953582021-01-03 17:08:37sammimasMi Zhang, Xing Gao (Xingming Observatory)XOSSXOSS01:33:22.000+30:33:01.202021-01-03 16:30:20.00017.9Clear-PNVXM48MZXOSSPossible nova or variable star in M33.
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
89532021-02-17 04:12:48ZTF_Bot1A. Dahiwale, C. Fremling(Caltech) on behalf of the Zwicky Transient Facility (ZTF)ZTFNova0.0002ZTF2021TNSCR.502....1D
85292021-01-11 23:51:05virajViraj Karambelkar on behalf of the Zwicky Transient Facility (ZTF) collaborationNoneNova-0.001Nova in M312021TNSCR.110....1K

Comments

This source is a nova in M33, not M31 as listed in the Remarks column of the classification report,

Object coordinates updated according to AT-report 95542 of Group ZTF
Previous RA, DEC: 01:33:22.000, +30:33:01.20 (23.341667, +30.550333)
Updated RA, DEC: 01:33:21.998, +30:33:01.25 (23.3416587, 30.5503474)