RA/DEC (2000)
16:08:49.978 +39:20:16.75
242.208241147 +39.3379863032
Type
SN Ia
Redshift
0.081
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-07-30 05:28:27.001
TNS AT
Y
Public
Y
Discovery Mag
19.3845
Filter
i-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025sqh - 2025-08-15 00:00:00 Lick-3m / KAST (UCSC)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
 ▌PS2_GPC2_r
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_i
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌PS1_GPC1_i
 ▌PS1_GPC1_w
   
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
21801 2025-08-15 00:00:00 Lick-3m / KAST Kishore Patra Kishore Patra UCSC tns_2025sqh_2025-08-15_Lick-3m_KAST_UCSC.flm Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-07-21 23:44:55 - 2025-07-21 23:44:55 2460878.489531 - 2460878.489531 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
510180 2025-07-21 23:44:55 2460878.489531 19.9 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
r-P1 PS2_GPC2 2025-07-25 06:28:29 - 2025-07-25 06:28:29 2460881.76978 - 2460881.76978 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506744 2025-07-25 06:28:29 2460881.76978 20.37 0.11 20.6 ABMag r-P1 PS2_GPC2 27 Robot
L-GOTO GOTO-N_GOTO-1 2025-08-18 20:47:27 - 2025-08-18 20:47:27 2460906.366276 - 2460906.366276 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
510181 2025-08-18 20:47:27 2460906.366276 18.57 0.05 ABMag L-GOTO GOTO-N_GOTO-1 360
i-ZTF P48_ZTF-Cam 2025-07-27 05:26:40 - 2025-07-30 05:28:27 2460883.7268519 - 2460886.7280903 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506131 2025-07-30 05:28:27 2460886.7280903 19.3845 0.190937 ABMag i-ZTF P48_ZTF-Cam
506130 2025-07-27 05:26:40 2460883.7268519 19.9751 ABMag i-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-07-30 09:26:41 - 2025-07-30 09:26:41 2460886.89353 - 2460886.89353 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506544 2025-07-30 09:26:41 2460886.89353 19.44 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-07-31 07:42:41 - 2025-07-31 07:42:41 2460887.82131 - 2460887.82131 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506545 2025-07-31 07:42:41 2460887.82131 19.4 0.317 19.2 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
i-P1 PS1_GPC1 2025-08-20 08:39:36 - 2025-08-20 08:39:36 2460907.86083 - 2460907.86083 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
510891 2025-08-20 08:39:36 2460907.86083 19.3 0.07 20.7 ABMag i-P1 PS1_GPC1 45 Robot
w-P1 PS1_GPC1 2025-08-03 06:48:03 - 2025-08-03 06:48:03 2460890.78337 - 2460890.78337 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507852 2025-08-03 06:48:03 2460890.78337 18.7 0.04 22 ABMag w-P1 PS1_GPC1 45 Robot
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
266923 2025-08-21 11:26:53 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 16:08:49.978 +39:20:16.75 2025-08-20 08:39:35.712 19.3 i-P1 PSN PS25fqo Pan-STARRS N
266556 2025-08-18 22:01:51 GOTO_bot D. O'Neill,A. Kumar,K. Ackley et al. GOTO GOTO 16:08:49.973 +39:20:16.64 2025-08-18 20:47:26.592 18.57 L-GOTO Other GOTO25fzx GOTO N
265263 2025-08-08 19:36:57 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 16:08:49.976 +39:20:16.72 2025-08-03 06:48:03.168 18.7 w-P1 PSN PS25fqo Pan-STARRS N
264631 2025-08-01 22:17:13 YSE_Bot1 D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al. YSE Pan-STARRS 16:08:49.975 +39:20:16.74 2025-07-25 06:28:28.992 20.37 r-P1 PSN PS25fqo Pan-STARRS N
264548 2025-08-01 00:52:00 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 16:08:49.954 +39:20:16.78 2025-07-31 07:42:41.184 19.4 orange-ATLAS PSN ATLAS25iqw ATLAS N
264330 2025-07-30 09:38:13 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 16:08:49.971 +39:20:16.61 2025-07-30 05:28:27.001 19.3845 i-ZTF PSN ZTF25abfnszm ZTF 2025TNSTR2997....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
21801 2025-08-16 10:28:30 Kishore C. Patra Kishore C. Patra, Kirsty Taggart, Kyle Davis, Ryan J. Foley (UCSC) UCSC SN Ia 0.081 1 UCSC We measure Si II 6355 velocity of -10,300  km/s. The redshift was determined using narrow emission lines from the host galaxy. 2025TNSCR3235....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
21801 2025-08-15 00:00:00 Lick-3m / KAST Kishore Patra Kishore Patra UCSC tns_2025sqh_2025-08-15_Lick-3m_KAST_UCSC.flm Object

Comments

TNS
System

Thu, 08/21/2025 - 11:26

Object coordinates updated

Object coordinates updated according to AT-report 266923 of Group Pan-STARRS
Previous RA, DEC: 16:08:49.976, +39:20:16.72 (242.20823416, +39.3379782019)
Updated RA, DEC: 16:08:49.978, +39:20:16.75 (242.208241147, +39.3379863032)

TNS
System

Fri, 08/08/2025 - 19:36

Object coordinates updated

Object coordinates updated according to AT-report 265263 of Group Pan-STARRS
Previous RA, DEC: 16:08:49.975, +39:20:16.74 (242.208229293, +39.3379842008)
Updated RA, DEC: 16:08:49.976, +39:20:16.72 (242.20823416, +39.3379782019)

TNS
System

Fri, 08/01/2025 - 22:17

Object coordinates updated

Object coordinates updated according to AT-report 264631 of Group Pan-STARRS
Previous RA, DEC: 16:08:49.971, +39:20:16.61 (242.2082136, +39.337946)
Updated RA, DEC: 16:08:49.975, +39:20:16.74 (242.208229293, +39.3379842008)