RA/DEC (2000)
16:09:38.669 +44:35:01.28
242.411121422 +44.5836882196
Type
TDE-featureless
Redshift
0.459
Discovery ReportClassification Report
Related AstroNotes: DRAFT-2133, 2025-127
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-02-19 12:30:18.002
TNS AT
Y
Public
Y
Discovery Mag
20.709
Filter
r-ZTF
Reporter/s
Robert Stein (UMD) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌TDE_2025gmz - 2025-04-27 00:00:00 Keck1 / LRIS (ZTF)z=
 ▌TDE_2025gmz - 2025-04-27 00:00:00 Keck1 / LRIS (ZTF)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

 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌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
21746 2025-04-27 00:00:00 Keck1 / LRIS E. Hammerstein, R. Chornock, X. Guo ZTF tns_2025gmz_2025-04-27_00-00-00_Keck1_LRIS_ZTF.flm Object
20924 2025-04-27 00:00:00 Keck1 / LRIS E. Hammerstein, R. Chornock, X. Guo ZTF tns_2025gmz_2025-04-27.00_Keck1_LRIS_ZTF.flm Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2025-02-19 12:30:18 - 2025-03-24 12:11:24 2460726.0210417 - 2460759.0079167 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
480269 2025-03-24 12:11:24 2460759.0079167 20.1902 0.187789 ABMag r-ZTF P48_ZTF-Cam
480268 2025-02-19 12:30:18 2460726.0210417 20.709 0.319301 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-02-19 10:50:52 - 2025-02-19 10:50:52 2460725.9519907 - 2460725.9519907 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
480267 2025-02-19 10:50:52 2460725.9519907 19.8554 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
w-P1 PS1_GPC1 2025-03-27 13:43:57 - 2025-03-27 13:43:57 2460762.07219 - 2460762.07219 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
488011 2025-03-27 13:43:57 2460762.07219 20.26 0.07 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
254881 2025-05-12 17:08:40 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 16:09:38.669 +44:35:01.28 2025-03-27 13:43:57.216 20.26 w-P1 PSN PS25cre Pan-STARRS N
250602 2025-04-02 19:08:20 Fritz Robert Stein (UMD) on behalf of ZTF ZTF ZTF 16:09:38.683 +44:35:01.42 2025-02-19 12:30:18.002 20.709 r-ZTF PSN ZTF25aagrecw ZTF 2025TNSTR1248....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
21746 2025-08-11 14:24:42 Robert Stein Erica Hammerstein (UC Berkeley), Robert Stein (JSI) on behalf of the ZTF TDE/AGN working group ZTF TDE-featureless 0.459 1 ZTF Updated classification from TDE to TDE-featureless, with same spectrum 2025TNSCR3149....1H
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
21746 2025-04-27 00:00:00 Keck1 / LRIS E. Hammerstein, R. Chornock, X. Guo ZTF tns_2025gmz_2025-04-27_00-00-00_Keck1_LRIS_ZTF.flm Object
20924 2025-04-30 01:57:46 Erica Hammerstein Erica Hammerstein on behalf of the ZTF TDE/AGN working group ZTF TDE 0.459 1 ZTF Spectrum reveals a steep blue continuum and no obvious emission features, consistent with the TDE-featureless class. Host stellar absorption lines confirm the redshift to be z = 0.459. 2025TNSCR1606....1H
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
20924 2025-04-27 00:00:00 Keck1 / LRIS E. Hammerstein, R. Chornock, X. Guo ZTF tns_2025gmz_2025-04-27.00_Keck1_LRIS_ZTF.flm Object

Comments

TNS
System

Mon, 05/12/2025 - 17:08

Object coordinates updated

Object coordinates updated according to AT-report 254881 of Group Pan-STARRS
Previous RA, DEC: 16:09:38.683, +44:35:01.42 (242.4111795, +44.5837276)
Updated RA, DEC: 16:09:38.669, +44:35:01.28 (242.411121422, +44.5836882196)