RA/DEC (2000)
11:06:32.486 +06:55:15.57
166.635358256 +6.9209926633
Type
SLSN-I
Redshift
0.17
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-12-18 03:20:43.296
TNS AT
Y
Public
Y
Discovery Mag
19.6
Filter
L-GOTO
Reporter/s
G. Ramsay, D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, R. Starling, B. Gompertz, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025ahki - 2025-01-18 05:09:29 Magellan-Clay / LDSS-3 (FLEET)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
 ▌GOTO-N_GOTO-2_L
 ▌PS2_GPC2_w
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌Other_Other_Other
   
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
22823 2025-01-18 05:09:29 Magellan-Clay / LDSS-3 Harsh Kumar (Harvard CfA), Peter Blanchard (Harvard CfA) Harsh Kumar (Harvard CfA) FLEET tns_2025ahki_2025-01-18_05-09-29_Magellan-Clay_LDSS-3_FLEET.ascii Object Not corrected for telluric
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-12-28 01:58:02 - 2025-12-28 01:58:02 2461037.58197 - 2461037.58197 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
543541 2025-12-28 01:58:02 2461037.58197 18.993 0.147 19.74 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
L-GOTO GOTO-N_GOTO-2 2025-12-18 03:20:43 - 2025-12-18 03:20:43 2461027.639389 - 2461027.639389 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540083 2025-12-18 03:20:43 2461027.639389 19.6 0.18 ABMag L-GOTO GOTO-N_GOTO-2 180
w-P1 PS2_GPC2 2026-01-18 12:58:09 - 2026-01-18 12:58:09 2461059.04038 - 2461059.04038 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
553235 2026-01-18 12:58:09 2461059.04038 19.04 0.03 22 ABMag w-P1 PS2_GPC2 45 Robot
L-GOTO GOTO-N_GOTO-1 2025-12-07 04:33:55 - 2025-12-07 04:33:55 2461016.690219 - 2461016.690219 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540082 2025-12-07 04:33:55 2461016.690219 19.3 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-12-07 13:50:27 - 2025-12-07 13:50:27 2461017.0767014 - 2461017.0767014 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540764 2025-12-07 13:50:27 2461017.0767014 18.4506 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-12-13 10:48:27 - 2025-12-19 13:22:03 2461022.9503125 - 2461029.0569792 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540766 2025-12-19 13:22:03 2461029.0569792 19.5716 0.103623 ABMag g-ZTF P48_ZTF-Cam
540765 2025-12-13 10:48:27 2461022.9503125 19.9941 0.14588 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-12-26 12:14:45 - 2025-12-26 12:14:45 2461036.01024 - 2461036.01024 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
543540 2025-12-26 12:14:45 2461036.01024 19.45 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
Other- Other_Other 2026-01-26 21:40:13 - 2026-02-26 17:35:01 2461067.40293 - 2461098.23265 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
562114 2026-02-26 17:35:01 2461098.23265 18.6 19.2 VegaMag Other- Other_Other 60 Robot MASTER-Tunka
562113 2026-02-26 16:32:52 2461098.18949 19 19.4 VegaMag Other- Other_Other 60 Robot MASTER-Tunka
562112 2026-01-26 21:40:13 2461067.40293 19.4 VegaMag Other- Other_Other 60 Robot [Last non detection] MASTER-Tunka
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
293263 2026-02-27 17:41:33 MASTER Ya.Kechin,V.Lipunov,E.Gorbovskoy et al. MASTER MASTER 11:06:32.520 +06:55:17.60 2026-02-26 16:32:51.936 19 Other- PSN MASTER OT J110632.52+065517.6 MASTER N
288621 2026-01-24 12:37:14 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 11:06:32.486 +06:55:15.57 2026-01-18 12:58:08.832 19.04 w-P1 PSN PS26kj Pan-STARRS N
282634 2025-12-28 06:50:57 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 11:06:32.484 +06:55:15.98 2025-12-28 01:58:02.208 18.993 wide-ATLAS PSN ATLAS25qkb ATLAS N
281475 2025-12-19 16:36:48 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 11:06:32.493 +06:55:15.73 2025-12-13 10:48:26.999 19.9941 g-ZTF PSN ZTF25acibvls ZTF N
281147 2025-12-18 09:25:29 GOTO_bot G. Ramsay,D. O'Neill,K. Ackley et al. GOTO GOTO 11:06:32.536 +06:55:15.56 2025-12-18 03:20:43.296 19.6 L-GOTO Other GOTO25lva GOTO 2025TNSTR5035....1R N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22822 2026-01-20 20:49:41 Harsh Kumar Harsh Kumar (Harvard CfA), Peter Blanchard (Harvard CfA), Daichi Hiramatsu (UF), Sebastian Gomez (UT), Edo Berger (Harvard CfA) FLEET SLSN-I 0.17 1 FLEET Shows a good match to several SLSN-I at z ~ 0.169 - 0.17 using snid-sage. Redshift estimation is approximate. 2026TNSCR.255....1K
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
22823 2025-01-18 05:09:29 Magellan-Clay / LDSS-3 Harsh Kumar (Harvard CfA), Peter Blanchard (Harvard CfA) Harsh Kumar (Harvard CfA) FLEET tns_2025ahki_2025-01-18_05-09-29_Magellan-Clay_LDSS-3_FLEET.ascii Object Not corrected for telluric

Comments

TNS
System

Sat, 01/24/2026 - 12:37

Object coordinates updated

Object coordinates updated according to AT-report 288621 of Group Pan-STARRS
Previous RA, DEC: 11:06:32.493, +06:55:15.73 (166.6353894, +6.9210358)
Updated RA, DEC: 11:06:32.486, +06:55:15.57 (166.635358256, +6.9209926633)

TNS
System

Fri, 12/19/2025 - 16:36

Object coordinates updated

Object coordinates updated according to AT-report 281475 of Group ZTF
Previous RA, DEC: 11:06:32.536, +06:55:15.56 (166.635567, +6.920988)
Updated RA, DEC: 11:06:32.493, +06:55:15.73 (166.6353894, +6.9210358)