RA/DEC (2000)
02:38:38.738 -21:03:45.67
39.6614063 -21.0626869
Type
CV
Redshift
0
Reporting Group
XOSS
Discovering Data Source
XOSS
Discovery Date
2025-10-12 19:39:19.872
TNS AT
Y
Public
Y
Discovery Mag
16.45
Filter
Clear-
Reporter/s
Jianlin Xu, Mi Zhang, Guoyou Sun, Jiangao Ruan, Jingyuan Zhao, Wenjie Zhou, Yong Ma, Ye, Zhuoyang Chen (Xingming Obs.), Hanjie Tan (AUUK), Guangwei Wu (NAAA), Xing Gao, Ali Esamdin, Chunhai Bai, Yong Wang (XAO), on behalf of the KATS team

Spectra

 AT_2025aaeu - 2025-10-19 02:22:18 LT / SPRAT (ZTF)z=
Show H at z=vexp= km/s
Show He at z=vexp= km/s
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Show N II at z=vexp= km/s
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Show N V at z=vexp= km/s
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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
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Show Tellurics 
Show Galaxy lines at z=
Show WR-WN 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-S_GOTO-3_L
 GOTO-N_GOTO-1_L
 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
22241 2025-10-19 02:22:18 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Aleksandra Bochenek, Zoe McGrath, Anna Ho Jacob Wise ZTF tns_2025aaeu_2025-10-19_02-22-17.758_LT_SPRAT_ZTF.spec Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-10-18 14:14:06 - 2025-10-18 14:14:06 2460967.093117 - 2460967.093117 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
524792 2025-10-18 14:14:06 2460967.093117 17.47 0.04 ABMag L-GOTO GOTO-S_GOTO-3 135
L-GOTO GOTO-N_GOTO-1 2025-10-08 02:36:52 - 2025-10-08 02:36:52 2460956.608937 - 2460956.608937 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
524791 2025-10-08 02:36:52 2460956.608937 18.1 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-10-12 09:35:47 - 2025-10-12 09:35:47 2460960.8998495 - 2460960.8998495 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
529401 2025-10-12 09:35:47 2460960.8998495 16.8117 0.042711 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-10-09 09:31:37 - 2025-11-07 06:32:23 2460957.896956 - 2460986.7724884 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
529402 2025-11-07 06:32:23 2460986.7724884 18.7366 0.179052 ABMag g-ZTF P48_ZTF-Cam
529400 2025-10-09 09:31:37 2460957.896956 19.4132 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
Clear- Other_Other 2025-10-12 19:39:20 - 2025-10-12 19:39:20 2460961.31898 - 2460961.31898 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
523383 2025-10-12 19:39:20 2460961.31898 16.45 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
275941 2025-11-07 06:39:34 BTSbot_bot Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF ZTF ZTF 02:38:38.738 -21:03:45.67 2025-10-12 09:35:46.996 16.8117 r-ZTF PSN ZTF25abwrsbc ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
273867 2025-10-19 08:48:37 GOTO_bot D. O'Neill, G. Ramsay, K. Ackley et al. GOTO GOTO 02:38:38.737 -21:03:45.57 2025-10-18 14:14:05.568 17.47 L-GOTO Other GOTO25iqk GOTO N
273118 2025-10-13 09:08:33 XOSS_Bot0 Jianlin Xu, Mi Zhang, Guoyou Sun et al. XOSS XOSS 02:38:38.720 -21:03:45.50 2025-10-12 19:39:19.872 16.45 Clear- Other KATS25T005 XOSS Cataclysmic variable candidate classified by XOSS. Details can be found at http://xjltp.china-vo.org/kats25t005.html 2025TNSTR4103....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
22241 2025-10-19 20:51:24 Jacob Wise Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (Caltech), Aleksandra Bochenek (LJMU), Zoe McGrath (LJMU), Anna Ho (Cornell) ZTF CV 0 1 ZTF Spectrum shows H-alpha emission at a redshift of z=0. This, combined with the fast rising and fading lightcurve with blue colour on the decline, is consistent with a CV within the MW. 2025TNSCR4196....1W
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
22241 2025-10-19 02:22:18 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Aleksandra Bochenek, Zoe McGrath, Anna Ho Jacob Wise ZTF tns_2025aaeu_2025-10-19_02-22-17.758_LT_SPRAT_ZTF.spec Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 275941 of Group ZTF
Previous RA, DEC: 02:38:38.737, -21:03:45.57 (39.661404, -21.062658)
Updated RA, DEC: 02:38:38.738, -21:03:45.67 (39.6614063, -21.0626869)

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 273867 of Group GOTO
Previous RA, DEC: 02:38:38.720, -21:03:45.50 (39.661333, -21.062639)
Updated RA, DEC: 02:38:38.737, -21:03:45.57 (39.661404, -21.062658)