RA/DEC (2000)
00:42:42.909 +41:17:34.73
10.678789 +41.292981
Type
Nova
Redshift
0
Discovery ReportClassification Report
Reporting Group
None
Discovering Data Source
None
Discovery Date
2025-12-01 01:36:14.976
TNS AT
Y
Public
Y
Host Name
M31
Discovery Mag
18.2
Filter
Clear-
Reporter/s
Róbert Fidrich
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2025afrg - 2025-12-05 20:53:00 BL41 / FOSC-E5535 (None)z=
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▌Show Mg at z=vexp= km/s
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),

Light curves

 ▌GOTO-N_GOTO-2_L
 ▌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
22521 2025-12-05 20:53:00 BL41 / FOSC-E5535 8400 Claudio Balcon Claudio Balcon None tns_2025afrg_2025-12-05_20-53-00_BL41_FOSC-E5535_None.dat tns_2025afrg_2025-12-05_20-53-00_BL41_FOSC-E5535_None.fit Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-11-28 21:18:29 - 2025-12-06 21:02:23 2461008.387829 - 2461016.376653 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
541193 2025-12-06 21:02:23 2461016.376653 17.52 0.13 ABMag L-GOTO GOTO-N_GOTO-2 135
541192 2025-11-28 21:18:29 2461008.387829 18.1 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
Clear- Other_Other 2025-11-30 02:25:13 - 2025-12-01 19:21:20 2461009.6008448 - 2461011.306478 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
535665 2025-12-01 19:21:20 2461011.306478 17.6 0.15 19.5 VegaMag Clear- Other_Other 360 Robert Fidrich 4×90s co-added images obtained with a 0.43 m Dall-Kirkham telescope at the Alnitak Remote Observatory, Nerpio, Spain, using a Luminance filter
535664 2025-12-01 01:36:15 2461010.5668443 18.2 0.15 19 VegaMag Clear- Other_Other 960 R Discovered using 8x120s 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).
535663 2025-11-30 02:25:13 2461009.6008448 18.8 VegaMag Clear- Other_Other 360 Robert Fidrich [Last non detection] 3x120s co-added images made with the 0.61-m f/6.5 CDK reflector, Sierra Remote Observatory at Auberry California USA
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
281669 2025-12-20 21:51:15 GOTO_bot G. Ramsay, D. O'Neill, K. Ackley et al. GOTO GOTO 00:42:42.909 +41:17:34.73 2025-12-06 21:02:22.560 17.52 L-GOTO Other GOTO25mfc GOTO N
279178 2025-12-01 22:03:00 Róbert Fidrich Róbert Fidrich 00:42:42.760 +41:17:30.30 2025-12-01 01:36:14.976 18.2 Clear- PNV M31 Discovered using 8x120s 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). 2025TNSTR4784....1F N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22520 2025-12-06 13:00:53 Claudio Balcon Claudio Balcon (Belluno A.O. ISSP) None Nova 0 1 The spectrum resembles that of a Nova in M31. 2025TNSCR4857....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
22521 2025-12-05 20:53:00 BL41 / FOSC-E5535 8400 Claudio Balcon Claudio Balcon None tns_2025afrg_2025-12-05_20-53-00_BL41_FOSC-E5535_None.dat tns_2025afrg_2025-12-05_20-53-00_BL41_FOSC-E5535_None.fit Object

Comments

TNS
System

Sat, 12/20/2025 - 21:51

Object coordinates updated

Object coordinates updated according to AT-report 281669 of Group GOTO
Previous RA, DEC: 00:42:42.760, +41:17:30.30 (10.678167, +41.29175)
Updated RA, DEC: 00:42:42.909, +41:17:34.73 (10.678789, +41.292981)

Róbert
Fidrich

Wed, 12/03/2025 - 00:11

Precize astrometry

Precize astrometry: 00 42 42.87 +41 17 33.1 (J2000.0)

The astrometry was provided by Tamás Elek, Nyíregyháza-Oros, Hungary using the original discovery images and follow-up images made on 2025 Dec 2th.