RA/DEC (2000)
00:46:52.615 +42:01:41.29
11.7192299 +42.0281352
Type
Nova
Redshift
Discovery ReportClassification Report
Reporting Group
None
Discovering Data Source
None
Discovery Date
2023-08-01 02:11:36.960
TNS AT
Y
Public
Y
Host Name
M31
Discovery Mag
19.5
Filter
Clear-
Reporter/s
Róbert Fidrich
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2023oom - 2023-09-17 12:28:17 Other / Other (None)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
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),

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
15721 2023-09-17 12:28:17 Other / Other 1800 Kenta Taguchi Kenta Taguchi None tns_2023oom_2023-09-17_12-28-17_Other_Other.dat tns_2023oom_2023-09-17_12-28-17_Other_Other.fits Object We performed the follow-up spectroscopic observation using the KOOLS-IFU attached to the 3.8-m Seimei telescope at Okayama Observatory, Kyoto University. The spectral resolution is ~ 500, and the wavelength coverage is 4100-8500 A.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2023-07-16 10:19:12 - 2023-07-19 09:18:43 2460141.93 - 2460144.888 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
358065 2023-07-19 09:18:43 2460144.888 20.72 ABMag r-ZTF P48_ZTF-Cam 30 ZTF
358064 2023-07-16 10:19:12 2460141.93 18.19 ABMag r-ZTF P48_ZTF-Cam 30 ZTF [Last non detection]
g-ZTF P48_ZTF-Cam 2023-08-17 11:19:41 - 2023-08-17 11:19:41 2460173.972 - 2460173.972 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
358066 2023-08-17 11:19:41 2460173.972 19.93 ABMag g-ZTF P48_ZTF-Cam 30 ZTF
Clear- Other_Other 2016-12-21 17:49:33 - 2024-01-11 15:59:43 2457744.24274 - 2460321.16647 5
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
385314 2024-01-11 15:59:43 2460321.16647 17.1 19.2 VegaMag Clear- Other_Other 90 Robot MASTER-Kislovodsk
385313 2024-01-11 15:56:17 2460321.16409 16.4 19.2 VegaMag Clear- Other_Other 90 Robot MASTER-Kislovodsk
355674 2023-08-01 02:11:37 2460157.5914 19.5 0.15 21.2 ABMag Clear- Other_Other 1200 Róbert Fidrich Preliminary magnitudes, using Gaia G magnitudes. Instrument: a 0.51m telescope Utah Desert Remote Observatory at Great Basin Desert, Beryl Junction, Utah, USA (iTelescope,net network).
355673 2023-02-01 02:38:24 2459976.61 19.5 ABMag Clear- Other_Other 720 Róbert Fidrich [Last non detection]
385312 2016-12-21 17:49:33 2457744.24274 21.3 VegaMag Clear- Other_Other 540 Robot [Last non detection] MASTER-Kislovodsk
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
199508 2024-01-11 17:18:13 MASTER Ya.Kechin, V. Lipunov, V.Kornilov et al. MASTER MASTER 00:46:52.690 +42:01:42.20 2024-01-11 15:56:17.376 16.4 Clear- PNV MASTER OT J004652.69+420142.2 MASTER N
185024 2023-08-18 15:27:25 ZTF_Bot1 C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration ZTF ZTF 00:46:52.615 +42:01:41.29 2023-07-19 09:18:43.200 20.72 r-ZTF PSN ZTF23aatzhso ZTF N
183903 2023-08-06 01:03:47 Róbert Fidrich Róbert Fidrich 00:46:52.605 +42:01:42.89 2023-08-01 02:11:36.960 19.5 Clear- 1 PNV M31 Discovered using 10x120s images made remotely with a Luminance filter on a 0.51m telescope Utah Desert Remote Observatory at Great Basin Desert, Beryl Junction, Utah, USA (iTelescope,net network). 2023TNSTR1872....1F N
Related files
File Comments Last Modified (UT) Modified By
tns_2023oom_atrep_183903.png The nova candidate marked on the 10x120s stacked image. 2023-08-06 01:03:48 Róbert Fidrich
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
15636 2023-09-26 05:19:36 Kenta Taguchi Kenta Taguchi (Kyoto University) None Nova 1 In the spectrum, narrow emission lines of Ha and Hb (whose FWHMs are ~ 440 km/s) are prominent. This object is likely a very slow nova in M31. 2023TNSCR2399....1T
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
15721 2023-09-17 12:28:17 Other / Other 1800 Kenta Taguchi Kenta Taguchi None tns_2023oom_2023-09-17_12-28-17_Other_Other.dat tns_2023oom_2023-09-17_12-28-17_Other_Other.fits Object We performed the follow-up spectroscopic observation using the KOOLS-IFU attached to the 3.8-m Seimei telescope at Okayama Observatory, Kyoto University. The spectral resolution is ~ 500, and the wavelength coverage is 4100-8500 A.

Comments

Róbert
Fidrich

Sun, 12/22/2024 - 17:58

Corrected discovery magnitude: 20.1

Corrected discovery magnitude using the new AAVSO sequence: 20.107CV (0.167)   -- Luminance filter with V comp. stars, Ensemble photometry done by Tamás Torda.

TNS
System

Fri, 08/18/2023 - 14:30

Object coordinates updated

Object coordinates updated according to AT-report 185024 of Group ZTF
Previous RA, DEC: 00:46:52.605, +42:01:42.89 (11.719188, +42.028581)
Updated RA, DEC: 00:46:52.615, +42:01:41.29 (11.7192299, 42.0281352)

Róbert
Fidrich

Fri, 08/11/2023 - 01:10

Updatead astrometry and follow-up photomerty

Precise astrometry of AT 2023oom: RA = 00 46 52.62, DEC = +42 01 41.6  (residuals are 0.1”) made by Tonny Vanmunster, CBAT Belgium using his 0.40m f/10.0 SCT telescope and a QHY-286M CMOS  camera with clear filter, total exposure time 540s.

Photometry result: CV = 20.66 +/- 0.32.

Mid exposure time: 2023 08 10.053 UT.

Vîntdevară
Dumitru Ciprian

Thu, 08/10/2023 - 11:12

UPDATED PHOTOMETRY

Re-measured the brightness of the transient. Corrected magnitude should be 20.1, not 18 as previously stated.

Vîntdevară
Dumitru Ciprian

Wed, 08/09/2023 - 09:48

Followup AT 2023oom

I confirmation a new optical transient in M 31, 00:46:52.6 +42:01:42.9. Is very faint, I estimated magnitude around 18 (total exposure one hour), on unfiltered CCD frames ASI 1600, taken with a 0.25m reflector on in Astronomical Observatory, Bârlad, România.

followup_AT 2023oom.jpg
Róbert
Fidrich

Mon, 08/07/2023 - 01:37

ZFT light curve - blue object?

The ZTF data (especially from 25 July) mined out by Jingyuan Zhao[1] suggest that this is a blue object, thus likely not an LPV.

https://alerce.online/object/ZTF23aatzhso

Sprectrum and multicolor follow-up photometry are urgently  needed!

Róbert
Fidrich

Sun, 08/06/2023 - 01:12

Correction: discovery date 2023-08-05 09:02:18

Sorry, the original discovery date posted in the TNS server was incorrect. AT 2023oom was discovered on the images made on 2023-08-05 09:02:18UT.
(On the CBAT TOCP site the discovery date was correct.)