RA/DEC (2000)
00:42:52.223 +41:01:44.87
10.7175962 +41.0291293
Type
Nova
Redshift
0
Discovery ReportClassification Report
Reporting Group
XOSS
Discovering Data Source
XOSS
Discovery Date
2026-01-19 13:12:44.928
TNS AT
Y
Public
Y
Host Name
M31
Host Redshift
-0.001
Discovery Mag
18.74
Filter
Clear-
Reporter/s
Jianlin Xu, Mi Zhang, Hualin Li, Ziyang Mai, Leiming Tang, Wenjie Zhou, Jingyuan Zhao, Guoyou Sun, Jiangao Ruan, Xing Gao, on behalf of the PSP team
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2026arf - 2026-01-25 00:00:00 NOT / ALFOSC (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

 ▌GOTO-N_GOTO-2_L
 ▌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
22860 2026-01-25 00:00:00 NOT / ALFOSC 1200 Shilpa Bijavara Seshashayana Niko Pyykkinen None tns_2026arf_2026-01-25_NOT_ALFOSC_None.dat tns_2026arf_2026-01-25_NOT_ALFOSC_None.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-12-27 19:35:47 - 2026-01-20 20:09:02 2461037.316518 - 2461061.339607 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
552718 2026-01-20 20:09:02 2461061.339607 18.22 0.04 ABMag L-GOTO GOTO-N_GOTO-2 360
552717 2025-12-27 19:35:47 2461037.316518 19.6 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
g-ZTF P48_ZTF-Cam 2026-01-17 03:58:31 - 2026-01-21 02:43:32 2461057.6656366 - 2461061.6135648 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
552206 2026-01-21 02:43:32 2461061.6135648 17.9357 0.141416 ABMag g-ZTF P48_ZTF-Cam
552205 2026-01-19 02:51:41 2461059.6192245 19.1511 0.079837 ABMag g-ZTF P48_ZTF-Cam
552204 2026-01-17 03:58:31 2461057.6656366 19.7075 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
Clear- Other_Other 2026-01-19 13:12:45 - 2026-01-19 13:12:45 2461060.05052 - 2461060.05052 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
551666 2026-01-19 13:12:45 2461060.05052 18.74 19.5 VegaMag Clear- Other_Other 60 Xing Gao
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
288311 2026-01-21 21:42:40 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 00:42:52.236 +41:01:44.75 2026-01-20 20:09:02.304 18.22 L-GOTO Other GOTO26re GOTO N
288123 2026-01-21 03:19:22 BTSbot_bot Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF ZTF ZTF 00:42:52.223 +41:01:44.87 2026-01-19 02:51:40.996 19.1511 g-ZTF PSN ZTF26aacinir ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
287908 2026-01-19 13:56:50 XOSS_Bot0 Jianlin Xu, Mi Zhang, Hualin Li et al. XOSS XOSS 00:42:52.230 +41:01:44.70 2026-01-19 13:12:44.928 18.74 Clear- PNV M31 PSP26E XOSS Nova candidate classified by XOSS. Details can be found at http://xjltp.china-vo.org/psp26e.html 2026TNSTR.233....1X N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22859 2026-01-26 15:06:18 Niko Pyykkinen Niko Pyykkinen (NOT/UTU), Shilpa Bijavara Seshashayana (NOT/Malmö), Hanindyo Kuncarayakti (UTU) None Nova 0 1 We report the classification of this transient as likely Nova in M31. The object has a relatively weak continuum, narrow lines associated with novae, and at the moment, similar brightness to novae. Follow-up observations are encouraged. 2026TNSCR.351....1P
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
22860 2026-01-25 00:00:00 NOT / ALFOSC 1200 Shilpa Bijavara Seshashayana Niko Pyykkinen None tns_2026arf_2026-01-25_NOT_ALFOSC_None.dat tns_2026arf_2026-01-25_NOT_ALFOSC_None.fits Object

Comments

TNS
System

Wed, 01/21/2026 - 03:19

Object coordinates updated

Object coordinates updated according to AT-report 288123 of Group ZTF
Previous RA, DEC: 00:42:52.230, +41:01:44.70 (10.717625, +41.029083)
Updated RA, DEC: 00:42:52.223, +41:01:44.87 (10.7175962, +41.0291293)