RA/DEC (2000)
20:51:45.075 -09:32:36.33
312.93781131 -9.54342532
Type
SN Ia
Redshift
0.085
Discovery ReportClassification Report
Reporting Group
XOSS
Discovering Data Source
XOSS
Discovery Date
2025-07-03 19:54:41.760
TNS AT
Y
Public
Y
Discovery Mag
19.27
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
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025qff - 2025-07-21 17:34:28 Lijiang-2.4m / YFOSC (LiONS)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),0 (observed)

Light curves

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌LAST_LAST-Cam_Clear
 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-STH_ATLAS-03_cyan
 ▌GOTO-N_GOTO-1_L
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌CTIO-4m_DECAM_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
21595 2025-07-21 17:34:28 Lijiang-2.4m / YFOSC Jujia Zhang LiONS tns_2025qff_2025-07-21_17-34-28.015_Lijiang-2.4m_YFOSC_LiONS.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-07-02 01:39:34 - 2025-07-02 01:39:34 2460858.56914 - 2460858.56914 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
501890 2025-07-02 01:39:34 2460858.56914 19.798 0.16 20.07 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
Clear- LAST_LAST-Cam 2024-07-07 22:53:18 - 2025-07-16 23:06:41 2460499.45368 - 2460873.46298 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503027 2025-07-16 23:06:41 2460873.46298 18.87 ABMag Clear- LAST_LAST-Cam 360
503026 2024-07-07 22:53:18 2460499.45368 20.96 ABMag Clear- LAST_LAST-Cam 2360 [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-06-30 02:01:30 - 2025-06-30 02:01:30 2460856.58438 - 2460856.58438 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503210 2025-06-30 02:01:30 2460856.58438 19.7 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
cyan-ATLAS ATLAS-STH_ATLAS-03 2025-07-01 02:11:56 - 2025-07-01 02:11:56 2460857.59162 - 2460857.59162 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
501889 2025-07-01 02:11:56 2460857.59162 19.5 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-07-18 01:54:26 - 2025-07-18 01:54:26 2460874.579469 - 2460874.579469 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503211 2025-07-18 01:54:26 2460874.579469 18.87 0.13 ABMag L-GOTO GOTO-N_GOTO-1 180
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-06-24 06:00:59 - 2025-07-22 03:22:52 2460850.7506829 - 2460878.6408796 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
587018 2025-07-22 03:22:52 2460878.6408796 18.86 0.06 20.35 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
587017 2025-06-24 06:00:59 2460850.7506829 20.18 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-06-29 08:36:23 - 2025-07-04 08:31:40 2460855.8585995 - 2460860.8553241 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
500714 2025-07-04 08:31:40 2460860.8553241 19.377 0.114944 ABMag r-ZTF P48_ZTF-Cam
500712 2025-06-29 08:36:23 2460855.8585995 19.9504 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-06-27 07:33:57 - 2025-06-29 09:37:29 2460853.8152431 - 2460855.9010301 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
500713 2025-06-29 09:37:29 2460855.9010301 20.599 0.175762 ABMag g-ZTF P48_ZTF-Cam
501235 2025-06-29 09:37:29 2460855.9010301 20.5574 0.35431 20.3089 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
501234 2025-06-27 07:33:57 2460853.8152431 19.9798 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
g-Sloan CTIO-4m_DECAM 2025-06-27 06:47:53 - 2025-06-27 06:47:53 2460853.7832455 - 2460853.7832455 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503874 2025-06-27 06:47:53 2460853.7832455 21.7968 0.044265 ABMag g-Sloan CTIO-4m_DECAM
Clear- Other_Other 2025-07-03 19:54:42 - 2025-07-03 19:54:42 2460860.32965 - 2460860.32965 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
500640 2025-07-03 19:54:42 2460860.32965 19.27 0.22 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
306073 2026-05-27 16:14:10 BlackGEM_Bot1 H. Tranin, F. Stoppa, D. Pieterse et al. BlackGEM BlackGEM 20:51:45.059 -09:32:36.65 2025-07-22 03:22:52.000 18.86 BG-q-BlackGem PSN BGEM J205145.06-093236.6 BlackGEM N
263218 2025-07-21 00:25:57 DESIRT_Bot Xander J. Hall (Carnegie Mellon U.), Lei Hu (Carnegie Mellon U.), Antonella Palmese (Carnegie Mellon U.) et al. DESIRT DESIRT 20:51:45.068 -09:32:36.32 2025-06-27 06:47:52.800 21.7968 g-Sloan PSN T202506272051451m093236 DESIRT N
262867 2025-07-18 06:00:18 GOTO_bot D. O'Neill, G. Ramsay, K. Ackley et al. GOTO GOTO 20:51:45.031 -09:32:36.02 2025-07-18 01:54:26.208 18.87 L-GOTO Other GOTO25ezv GOTO N
262778 2025-07-17 01:53:25 LAST_Bot1 E. A. Zimmerman (WIS), R. Konno (WIS), A. Horowicz (WIS) et al. LAST LAST 20:51:45.016 -09:32:35.84 2025-07-16 23:06:41.472 18.87 Clear- PSN LAST N
262092 2025-07-11 10:38:40 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 20:51:45.061 -09:32:35.92 2025-07-02 01:39:33.696 19.798 wide-ATLAS PSN ATLAS25hgg ATLAS N
261746 2025-07-06 18:15:24 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 20:51:45.075 -09:32:36.33 2025-06-29 09:37:29.001 20.5574 g-ZTF PSN ZTF25aayxsry ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25aayxsry N
261457 2025-07-04 10:44:16 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 20:51:45.072 -09:32:36.44 2025-06-29 09:37:29.000 20.599 g-ZTF PSN ZTF25aayxsry ZTF N
261402 2025-07-03 23:36:11 Mi Zhang Jianlin Xu, Mi Zhang, Guoyou Sun et al. XOSS XOSS 20:51:45.110 -09:32:36.60 2025-07-03 19:54:41.760 19.27 Clear- Other KATS25N005 XOSS CV/SN candidate classified by XOSS. Details can be found at http://xjltp.china-vo.org/kats25n005.html 2025TNSTR2542....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
21595 2025-07-22 08:17:39 Liping Li Zeyi Wang, Liping Li, Qian Zhai, Jujia Zhang (YNAO); Xiaofeng Wang(THU) LiONS SN Ia 0.085 1 LiONS The spectrum is similar to that of an SN Ia at a few days after maximum light (e.g., SN 2007bd at +2d or SN 2005el at +4d via SNID). The redshift is obtained by the SNID fitting. 2025TNSCR2839....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
21595 2025-07-21 17:34:28 Lijiang-2.4m / YFOSC Jujia Zhang LiONS tns_2025qff_2025-07-21_17-34-28.015_Lijiang-2.4m_YFOSC_LiONS.dat Object

Comments

TNS
System

Sun, 07/06/2025 - 18:15

Object coordinates updated

Object coordinates updated according to AT-report 261746 of Group ZTF
Previous RA, DEC: 20:51:45.072, -09:32:36.44 (312.9377994, -9.5434543)
Updated RA, DEC: 20:51:45.075, -09:32:36.33 (312.93781131, -9.54342532)

TNS
System

Fri, 07/04/2025 - 10:44

Object coordinates updated

Object coordinates updated according to AT-report 261457 of Group ZTF
Previous RA, DEC: 20:51:45.110, -09:32:36.60 (312.937958, -9.5435)
Updated RA, DEC: 20:51:45.072, -09:32:36.44 (312.9377994, -9.5434543)