RA/DEC (2000)
15:59:40.061 +27:06:40.85
239.916918804 +27.1113477238
Type
SN IIn
Redshift
0.0675
Related AstroNotes: 2025-122
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2025-02-19 12:07:02.004
TNS AT
Y
Public
Y
Host Name
SDSS J155940.04+270641.1
Discovery Mag
19.3162
Filter
r-ZTF
Reporter/s
S. Jurado, F.E. Bauer, F. Forster, G. Pignata, A. Munoz-Arancibia, A. Mourao, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, B. Gamboa, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, E. Pizarro, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker

Spectra

 SN_2025cbj - 2025-05-17 04:29:37 LT / SPRAT (ZTF)z=
 SN_2025cbj - 2025-03-05 08:09:04 P60 / SEDM (ZTF)z=
Show H at z=vexp= km/s
Show He at z=vexp= km/s
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Show O V at z=vexp= km/s
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Show Na at z=vexp= km/s
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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
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Show Å at z=vexp= km/s
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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

 LAST_LAST-Cam_Clear
 BG4_BlackGEM-Cam4_BG-q
 BG2_BlackGEM-Cam2_BG-q
 P48_ZTF-Cam_r
 P48_ZTF-Cam_g
 ATLAS-HKO_ATLAS-02_orange
 PS1_GPC1_z
   
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
21054 2025-05-17 04:29:37 LT / SPRAT Daniel Perley, Jacob Wise, K-Ryan Hinds, Zoe McGrath Jacob Wise ZTF tns_2025cbj_2025-05-17_04-29-36.683_LT_SPRAT_ZTF.spec Object
20539 2025-03-05 08:09:04 P60 / SEDM 2700 SEDmRobot ZTF tns_2025cbj_2025-03-05_08-09-03.826686_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2024-07-12 19:21:49 - 2025-04-04 23:25:30 2460504.30682 - 2460770.47604 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
480841 2025-04-04 23:25:30 2460770.47604 19.28 ABMag Clear- LAST_LAST-Cam 400
480840 2024-07-12 19:21:49 2460504.30682 20.89 ABMag Clear- LAST_LAST-Cam 2400 [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2024-08-06 00:20:01 - 2024-08-06 00:20:01 2460528.5139005 - 2460528.5139005 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
473339 2024-08-06 00:20:01 2460528.5139005 20.63 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-03-04 08:12:31 - 2025-03-04 08:12:31 2460738.8420255 - 2460738.8420255 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
473340 2025-03-04 08:12:31 2460738.8420255 18.42 0.06 20.94 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
r-ZTF P48_ZTF-Cam 2025-02-17 09:50:29 - 2025-02-19 12:07:02 2460723.9100579 - 2460726.0048843 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
469904 2025-02-19 12:07:02 2460726.0048843 19.3162 0.112584 20.3518 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
472350 2025-02-19 12:07:02 2460726.0048843 19.3162 0.112584 20.3518 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
472349 2025-02-17 09:50:29 2460723.9100579 19.4996 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
g-ZTF P48_ZTF-Cam 2025-02-17 12:13:14 - 2025-02-17 12:13:14 2460724.0091898 - 2460724.0091898 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
469903 2025-02-17 12:13:14 2460724.0091898 18.4499 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-02-19 14:30:03 - 2025-02-20 14:01:38 2460726.1042 - 2460727.08447 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
470255 2025-02-20 14:01:38 2460727.08447 19.11 0.164 19.34 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
470254 2025-02-19 14:30:03 2460726.1042 19.35 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
z-P1 PS1_GPC1 2025-03-17 12:50:38 - 2025-03-17 12:50:38 2460752.03516 - 2460752.03516 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
476842 2025-03-17 12:50:38 2460752.03516 18.57 0.09 20.4 ABMag z-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
250961 2025-04-05 03:49:41 LAST_Bot1 E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al. LAST LAST 15:59:40.078 +27:06:40.77 2025-04-04 23:25:29.856 19.28 Clear- PSN LAST N
248874 2025-03-19 14:04:43 YSE_Bot1 D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al. YSE Pan-STARRS 15:59:40.061 +27:06:40.85 2025-03-17 12:50:37.824 18.57 z-P1 PSN PS25amg Pan-STARRS N
246682 2025-03-04 12:06:03 BlackGEM_Bot1 F. Stoppa,H. Tranin,D. Pieterse et al. BlackGEM BlackGEM 15:59:40.080 +27:06:40.88 2025-03-04 08:12:31.000 18.42 BG-q-BlackGem PSN BGEM J155940.07+270640.8 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2025cbj_atrep_246682_BlackGEM.pdf Finding Chart 2025-03-04 12:06:04 BlackGEM_Bot1
246175 2025-02-27 19:29:27 Fink Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al. Fink ZTF 15:59:40.070 +27:06:40.81 2025-02-19 12:07:02.004 19.3162 r-ZTF PSN ZTF25aagbrpb ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25aagbrpb N
245241 2025-02-20 18:19:23 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 15:59:40.080 +27:06:41.26 2025-02-20 14:01:38.208 19.11 orange-ATLAS PSN ATLAS25buy ATLAS N
245093 2025-02-20 03:03:03 ALeRCE S. Jurado,F.E. Bauer,F. Forster et al. ALeRCE ZTF 15:59:40.064 +27:06:40.81 2025-02-19 12:07:02.004 19.3162 r-ZTF PSN SDSS J155940.04+270641.1 ZTF25aagbrpb ZTF SN candidate classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25aagbrpb 2025TNSTR.688....1J N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21054 2025-05-18 18:04:37 Jacob Wise Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (LJMU), Zoe McGrath (LJMU) ZTF SN IIn 0.0675 1 ZTF Spectrum displays broad H-alpha emission characteristic of a SN IIn. We refine the redshift to z = 0.0675. 2025TNSCR1831....1W
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
21054 2025-05-17 04:29:37 LT / SPRAT Daniel Perley, Jacob Wise, K-Ryan Hinds, Zoe McGrath Jacob Wise ZTF tns_2025cbj_2025-05-17_04-29-36.683_LT_SPRAT_ZTF.spec Object
20539 2025-03-07 18:50:25 ZTF_Bot1 J. Sollerman, S. Covarrubias, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN IIn 0.07 1 ZTF 2025TNSCR.915....1S
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
20539 2025-03-05 08:09:04 P60 / SEDM 2700 SEDmRobot ZTF tns_2025cbj_2025-03-05_08-09-03.826686_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 248874 of Group Pan-STARRS
Previous RA, DEC: 15:59:40.070, +27:06:40.81 (239.9169571, +27.111335577778)
Updated RA, DEC: 15:59:40.061, +27:06:40.85 (239.916918804, 27.1113477238)

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 246175 of Group ZTF
Previous RA, DEC: 15:59:40.064, +27:06:40.81 (239.9169329, +27.1113353)
Updated RA, DEC: 15:59:40.070, +27:06:40.81 (239.9169571, 27.111335577778)