RA/DEC (2000)
00:42:56.061 +41:14:52.04
10.7335873 +41.2477885
Type
Nova
Redshift
0
Reporting Group
None
Discovering Data Source
None
Discovery Date
2025-07-03 02:36:31.680
TNS AT
Y
Public
Y
Host Name
M31
Discovery Mag
17.5
Filter
Clear-
Reporter/s
Róbert Fidrich

Spectra

 AT_2025qdc - 2025-07-21 22:28:00 BL41 / FOSC-E5535 (None)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),

Light curves

 ATLAS-TDO_ATLAS-05_wide
 P48_ZTF-Cam_i
 P48_ZTF-Cam_g
 ATLAS-HKO_ATLAS-02_orange
 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
21590 2025-07-21 22:28:00 BL41 / FOSC-E5535 3600 Claudio Balcon Claudio Balcon None tns_2025qdc_2025-07-21_22-28-00_BL41_FOSC-E5535_None.dat tns_2025qdc_2025-07-21_22-28-00_BL41_FOSC-E5535_None.fit Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-06-30 03:39:08 - 2025-07-11 03:04:03 2460856.65218 - 2460867.62781 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
502785 2025-07-11 03:04:03 2460867.62781 18.38 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
502117 2025-07-04 02:22:40 2460860.59907 17.833 0.076 19.5 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
502116 2025-06-30 03:39:08 2460856.65218 19.71 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
i-ZTF P48_ZTF-Cam 2025-07-14 09:16:20 - 2025-07-14 09:16:20 2460870.8863426 - 2460870.8863426 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506991 2025-07-14 09:16:20 2460870.8863426 18.6083 ABMag i-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-07-23 07:26:35 - 2025-08-01 09:56:36 2460879.8101273 - 2460888.9143056 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506993 2025-08-01 09:56:36 2460888.9143056 18.5062 0.0703733 ABMag g-ZTF P48_ZTF-Cam
506992 2025-07-23 07:26:35 2460879.8101273 19.0857 0.104536 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-07-13 11:02:25 - 2025-07-13 11:02:25 2460869.96001 - 2460869.96001 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
502786 2025-07-13 11:02:25 2460869.96001 17.521 0.152 18.2 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
Clear- Other_Other 2025-06-29 03:06:41 - 2025-07-03 02:36:32 2460855.6296436 - 2460859.6087 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
500405 2025-07-03 02:36:32 2460859.6087 17.5 0.15 19 ABMag Clear- Other_Other 360 Robert Fidrich 3x120s co-added images made with a 0.43 m Dall-Kirkham telescope at Alnitak Remote Observatory, Sierra del Segura, SpaiN, with Luminance filter. The discovery was made using the Alnitak Remote Observatories robotic telescope network, ARTA program.
500406 2025-07-02 02:35:48 2460858.6082 18.3 0.15 19 ABMag Clear- Other_Other 720 Robert Fidrich 6x120s co-added images made with a 0.43 m Dall-Kirkham telescope at Alnitak Remote Observatory, Sierra del Segura, SpaiN, with Luminance filter.
500404 2025-06-29 03:06:41 2460855.6296436 19.5 ABMag Clear- Other_Other 720 Robert Fidrich [Last non detection] 6x120s co-added images made with a 0.43 m Dall-Kirkham telescope at Alnitak Remote Observatory, Sierra del Segura, SpaiN, with Luminance filter.
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
264767 2025-08-02 17:24:35 Fritz Daniel Perley (LJMU),Christoffer Fremling (Caltech),Theophile du Laz (Caltech) on behalf of ZTF et al. ZTF ZTF 00:42:56.061 +41:14:52.04 2025-07-23 07:26:34.998 19.0857 g-ZTF PSN ZTF25abeepjs ZTF N
262640 2025-07-15 13:31:21 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 00:42:56.170 +41:14:52.27 2025-07-13 11:02:24.864 17.521 orange-ATLAS PSN ATLAS25hfs ATLAS N
262264 2025-07-12 12:04:42 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 00:42:56.074 +41:14:52.12 2025-07-04 02:22:39.648 17.833 wide-ATLAS PSN ATLAS25hfs ATLAS N
261294 2025-07-03 07:47:00 Róbert Fidrich Róbert Fidrich et al. 00:42:56.280 +41:14:51.20 2025-07-03 02:36:31.680 17.5 Clear- PNV M31 Róbert Fidrich and Tamás Tordai (HAA/VSS) report the discovery of a new astronomical transient. Discovered using 3x120s co-added images made with a 0.43 m Dall-Kirkham telescope at Alnitak Remote Observatory, Sierra del Segura, SpaiN, with Luminance filter. The discovery was made using the Alnitak Remote Observatories robotic telescope network, ARTA program. More details: https://vendegcsillagkereso.blogspot.com/2025/07/vend60-possible-nova-in-m31.html 2025TNSTR2540....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
21590 2025-07-21 23:05:36 Claudio Balcon Claudio Balcon (Belluno A.O. ISSP) None Nova 0 1 The low S/N spectrum resembles that of a Nova in M31 2025TNSCR2815....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
21590 2025-07-21 22:28:00 BL41 / FOSC-E5535 3600 Claudio Balcon Claudio Balcon None tns_2025qdc_2025-07-21_22-28-00_BL41_FOSC-E5535_None.dat tns_2025qdc_2025-07-21_22-28-00_BL41_FOSC-E5535_None.fit Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 264767 of Group ZTF
Previous RA, DEC: 00:42:56.170, +41:14:52.27 (10.73404, +41.247854)
Updated RA, DEC: 00:42:56.061, +41:14:52.04 (10.7335873, +41.2477885)

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 262640 of Group ATLAS
Previous RA, DEC: 00:42:56.074, +41:14:52.12 (10.73364, +41.24781)
Updated RA, DEC: 00:42:56.170, +41:14:52.27 (10.73404, +41.247854)

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 262264 of Group ATLAS
Previous RA, DEC: 00:42:56.280, +41:14:51.20 (10.7345, +41.247556)
Updated RA, DEC: 00:42:56.074, +41:14:52.12 (10.73364, +41.24781)