RA/DEC (2000)
15:58:41.723 +26:40:03.51
239.673844575 +26.6676424363
Type
TDE-He
Redshift
0.087
Related AstroNotes: DRAFT-2133, 2025-127
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-03-24 10:27:57.000
TNS AT
Y
Public
Y
Discovery Mag
20.0984
Filter
g-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF

Spectra

 TDE_2025hee - 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_r
   
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
20923 2025-04-27 00:00:00 Keck1 / LRIS E. Hammerstein, R. Chornock, X. Guo ZTF tns_2025hee_2025-04-27_Keck1_LRIS_ZTF.flm Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2025-03-21 11:53:56 - 2025-03-21 11:53:56 2460755.995787 - 2460755.995787 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
481818 2025-03-21 11:53:56 2460755.995787 20.1543 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-03-24 10:27:57 - 2025-04-10 11:09:03 2460758.9360764 - 2460775.9646181 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
481820 2025-04-10 11:09:03 2460775.9646181 19.704 0.191278 ABMag g-ZTF P48_ZTF-Cam
481819 2025-03-24 10:27:57 2460758.9360764 20.0984 0.160794 ABMag g-ZTF P48_ZTF-Cam
r-P1 PS1_GPC1 2025-04-14 14:49:33 - 2025-04-14 14:49:33 2460780.11774 - 2460780.11774 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
482555 2025-04-14 14:49:33 2460780.11774 19.68 0.18 20.6 ABMag r-P1 PS1_GPC1 27 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
251846 2025-04-18 17:12:55 YSE_Bot1 D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello et al. YSE Pan-STARRS 15:58:41.723 +26:40:03.51 2025-04-14 14:49:32.736 19.68 r-P1 PSN PS25bkz Pan-STARRS N
251427 2025-04-11 09:36:02 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 15:58:41.737 +26:40:03.50 2025-03-24 10:27:57.000 20.0984 g-ZTF PSN ZTF25aaknwwy ZTF 2025TNSTR1359....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
20923 2025-04-30 01:55:56 Erica Hammerstein Erica Hammerstein on behalf of the ZTF TDE/AGN working group ZTF TDE-He 0.087 1 ZTF Upon SDSS host spectrum subtraction, the spectrum revealed a steep blue continuum and a broad He II/N III feature, consistent with a TDE-He classification. 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
20923 2025-04-27 00:00:00 Keck1 / LRIS E. Hammerstein, R. Chornock, X. Guo ZTF tns_2025hee_2025-04-27_Keck1_LRIS_ZTF.flm Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 251846 of Group Pan-STARRS
Previous RA, DEC: 15:58:41.737, +26:40:03.50 (239.6739058, +26.6676399)
Updated RA, DEC: 15:58:41.723, +26:40:03.51 (239.673844575, +26.6676424363)