RA/DEC (2000)
00:44:20.789 +41:23:10.86
11.0866227 +41.3863508
Type
Nova
Redshift
0
Reporting Group
ISSP
Discovering Data Source
ISSP
Discovery Date
2022-08-04 22:53:31.776
TNS AT
Y
Public
Y
Host Name
M31
Discovery Mag
16.6
Filter
Clear-
Reporter/s
Raffaele Belligoli

Spectra

 AT_2022qpg - 2022-08-06 01:04:00 Other / Other (None)z=
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Light curves

 P48_ZTF-Cam_r
 P48_ZTF-Cam_g
 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
13037 2022-08-06 01:04:00 Other / Other 3600 Claudio Balcon Claudio Balcon None tns_2022qpg_2022-08-06_01-04-00_Other_Other.dat tns_2022qpg_2022-08-06_01-04-00_Other_Other.fit Object I obtained the low-resolution spectrum R~100 using the FOSC-ES32 spectrograph attached to a 0.2m telescope, in the course of Italian Supernovae Search Project.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2022-08-03 10:46:34 - 2022-08-07 10:50:53 2459794.949 - 2459798.952 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
297186 2022-08-07 10:50:53 2459798.952 17.3 ABMag r-ZTF P48_ZTF-Cam 30 ZTF
297184 2022-08-03 10:46:34 2459794.949 20.24 ABMag r-ZTF P48_ZTF-Cam 30 ZTF [Last non detection]
g-ZTF P48_ZTF-Cam 2022-08-07 09:51:50 - 2022-08-07 09:51:50 2459798.911 - 2459798.911 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
297185 2022-08-07 09:51:50 2459798.911 17.89 ABMag g-ZTF P48_ZTF-Cam 30 ZTF
Clear- Other_Other 2022-07-31 22:46:22 - 2022-08-04 22:53:32 2459792.4488657 - 2459796.45384 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
296693 2022-08-04 22:53:32 2459796.45384 16.6 0.5 19 STMag Clear- Other_Other 7200 R.Belligoli New transient was clearly detected on '2022-08-04 22:51:02.390' UT using 24x300s frames (7200s total) obtained by a Moravian G4-9000 KAF unfiltered CCD with the 0.4m f.8 Ritchey-Chrétien telescope from Monte Baldo "A.Gelodi" Astronomic Observatory, località Novezzina, Ferrara di Monte Baldo, Verona, Italy. The discovery magnitude is 16.6±0.5 mag in the CV band (clear visual). Offset 1091E 425N We will continue to monitor the PNV light curve and strongly encourage additional follow-up observations.
296692 2022-07-31 22:46:22 2459792.4488657 19 STMag Clear- Other_Other 7200 R.Belligoli [Last non detection] Last non-detected image on '2022-07-31 22:46:22' UT using 24x300s frames (7200s total) was obtained by a Moravian G4-9000 KAF unfiltered CCD with the 0.4m f.8 Ritchey-Chrétien telescope from Monte Baldo "A.Gelodi" Astronomic Observatory, località Novezzina, Ferrara di Monte Baldo, Verona, Italy. (Latitudine 45° 41' 52" N. Longitudine 10° 51' 32" E)
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
154406 2022-08-07 19:56:30 ZTF_Bot1 C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration et al. ZTF ZTF 00:44:20.789 +41:23:10.86 2022-08-07 09:51:50.400 17.89 g-ZTF PSN ZTF22aazdzyj ZTF N
154172 2022-08-05 07:14:22 Raffaele Belligoli Raffaele Belligoli et al. ISSP ISSP 00:44:20.790 +41:23:11.10 2022-08-04 22:53:31.776 16.6 Clear- PNV M31 ISSP OMB extragalactic nova monitoring by ISSP collaboration, R.Belligoli, F.Castellani, C.Marangoni, report the discovery of a probable nova in M31. Offset 1091E 425N 2022TNSTR2224....1B N
Related files
File Comments Last Modified (UT) Modified By
tns_2022qpg_atrep_154172_ISSP.jpg OMB extragalactic supernovae monitoring by ISSP collaboration, R.Belligoli, F.Castellani, C.Marangoni, reports the discovery of a PNV in M31. The new transient was clearly detected on '2022-08-04 22:51:02.390' UT using 24x300s frames (7200s total) obtained by a Moravian G4-9000 KAF unfiltered CCD with the 0.4m f.8 Ritchey-Chrétien telescope from Monte Baldo "A.Gelodi" Astronomic Observatory, località Novezzina, Ferrara di Monte Baldo, Verona, Italy. The discovery magnitude is 16.6±0.5 mag in the CV band (clear visual). We will continue to monitor the PNV light curve and strongly encourage additional follow-up observations. The discovery image is also available at: 2022-08-05 07:14:22 Raffaele Belligoli
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
12966 2022-08-06 01:57:38 Claudio Balcon Claudio Balcon (Belluno A.O. ISSP) None Nova 0 1 The Balmer lines in emission are compatible with a Nova. The emission lines of FeII, He and NII are questionable due to the noisy spectrum. Further observations are suggested. 2022TNSCR2237....1B
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
13037 2022-08-06 01:04:00 Other / Other 3600 Claudio Balcon Claudio Balcon None tns_2022qpg_2022-08-06_01-04-00_Other_Other.dat tns_2022qpg_2022-08-06_01-04-00_Other_Other.fit Object I obtained the low-resolution spectrum R~100 using the FOSC-ES32 spectrograph attached to a 0.2m telescope, in the course of Italian Supernovae Search Project.

Comments

Dave
Balam

follow-up photometry with SDSS filters

AT2022qpg in M31 was observed with the 1.82-m Plaskett telescope (Dominion Astrophysical Observatory/National Research Council of Canada) on UT 2022 Aug. 06.47 and Aug. 08.40 in SDSS filters u,g and r. Differential photometry, using an aperture of 9 seconds of arc was performed on the transient using zeropoints derived from Sloan stars in a nearby field. We find the following magnitudes and colours: UT 2022 Aug. 06.47, u = 17.42 (+/- 0.03), r = 16.93 (0.02) with colours  u-r = +0.49 (0.04). UT Aug. 08.40, u = 18.47 (0.04), g = 17.54 (0.02), r = 17.06 (0.02) with colours u-g = +0.93 (0.04) and g-r = +0.48 (0.03).

D. D. Balam (DAO/NRC), C. E. Spratt (ret), P. Langill (RAO/University of Calgary) and D. W. E. Green (CBAT). 1. 82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Research Council of Canada

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 154406 of Group ZTF
Previous RA, DEC: 00:44:20.790, +41:23:11.10 (11.086625, +41.386417)
Updated RA, DEC: 00:44:20.789, +41:23:10.86 (11.0866227, 41.3863508)

Flavio
Castellani

VRI Photometry

We report multiband photometry of Nova AT2022qpg on 2022-08-05.930556 (UT) obtained with the RC 40CM telescope of Monte Baldo Observatory (ITALY). CCD used following integration: V 1980s R 660s I 660s:

Timestamp (JD)     Filter    Magnitude  Err.
2459797.433            Ic       15.908       0.1
2459797.433            Rc      16.372      0.13
2459797.433            Vj      17.035       0.05

Flavio Castellani

Osservatorio Monte Baldo

Raffaele
Belligoli

Follow up

It should be noted that in the same position a optical transient TSS J004420.7 + 412311 was reported ATel #627; R. Quimby, M. Sellers, P. Hoeflich, J. C. Wheeler (University of Texas), and C. Gerardy (Imperial College) on 12 Oct 2005; 19:30 UT.  https://www.astronomerstelegram.org/?read=627

The discovery image is also available at: http://www.osservatoriomontebaldo.it/uploads/ISSP/M31_AT 2022qpg_20220804.jpg