RA/DEC (2000)
21:49:34.542 +23:02:44.47
327.393927 +23.0456871
Type
SN Ia
Redshift
0.069
Discovery ReportClassification Report
Related AstroNotes: 2025-305
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-10-18 02:56:05.000
TNS AT
Y
Public
Y
Discovery Mag
18.412
Filter
g-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025aasv - 2025-10-22 20:46:03 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),0 (observed)

Light curves

 ▌GOTO-N_GOTO-2_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
   
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
22276 2025-10-22 20:46:03 NOT / ALFOSC 1000 Uliana Pylypenko, Emily Sageser, Jouni Valkjärvi, Emma Johtela None tns_2025aasv_2025-10-22_20-46-03_NOT_ALFOSC_None.ascii tns_2025aasv_2025-10-22_20-46-03_NOT_ALFOSC_None.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-10-02 21:35:01 - 2025-10-09 23:40:17 2460951.399316 - 2460958.486306 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
528070 2025-10-09 23:40:17 2460958.486306 19.53 0.15 ABMag L-GOTO GOTO-N_GOTO-2 360
528069 2025-10-02 21:35:01 2460951.399316 19.7 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-10-08 06:18:42 - 2025-10-18 03:45:01 2460956.7629861 - 2460966.6562616 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
524519 2025-10-18 03:45:01 2460966.6562616 18.371 0.0697332 ABMag r-ZTF P48_ZTF-Cam
524517 2025-10-08 06:18:42 2460956.7629861 19.6611 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-10-18 02:56:05 - 2025-10-18 02:56:05 2460966.6222801 - 2460966.6222801 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
524518 2025-10-18 02:56:05 2460966.6222801 18.412 0.0710233 ABMag g-ZTF P48_ZTF-Cam
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
275337 2025-10-31 11:07:35 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 21:49:34.550 +23:02:44.70 2025-10-09 23:40:17.184 19.53 L-GOTO Other GOTO25irx GOTO N
273750 2025-10-18 05:08:24 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 21:49:34.542 +23:02:44.47 2025-10-18 02:56:05.000 18.412 g-ZTF PSN ZTF25abwcqet ZTF 2025TNSTR4178....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22276 2025-10-23 12:42:15 Christina Humina Uliana Pylypenko, Emily Sageser, Jouni Valkjärvi, Emma Johtela, Christina Humina, Tuomas Kangas, Erkki Kankare (University of Turku), Niko Pyykkinen (NOT) None SN Ia 0.069 1 Classification was done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) as part of a remote observing course at the University of Turku. AT 2025aasv is best matched with type Ia. Redshift is calculated from the Na ID line clearly visible in the spectra. The spectrum looks reddened consistent with the strong Na ID line. 2025TNSCR4263....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
22276 2025-10-22 20:46:03 NOT / ALFOSC 1000 Uliana Pylypenko, Emily Sageser, Jouni Valkjärvi, Emma Johtela None tns_2025aasv_2025-10-22_20-46-03_NOT_ALFOSC_None.ascii tns_2025aasv_2025-10-22_20-46-03_NOT_ALFOSC_None.fits Object

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