RA/DEC (2000)
12:59:06.130 +28:48:42.62
194.775542 +28.811839
Type
SN IIb
Redshift
0.003334
Discovery ReportClassification Report
Related AstroNotes: 2024-128, 2024-130, 2024-131, 2024-134, 2024-140, 2024-395
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2024-05-12 21:36:45.792
TNS AT
Y
Public
Y
Discovery Mag
14.58
Filter
L-GOTO
Reporter/s
B. Godson, D. O'Neill, K. Ackley, M. Dyer, F. Jiménez-Ibarra, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, L. Nuttall, E. Pallé, D. Pollacco, T. Killestein, A. Kumar, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2024iss - 2024-05-24 23:43:37 LT / SPRAT (OxQUB)z=
 ▌SN_2024iss - 2024-05-14 23:25:14 LT / SPRAT (ZTF)z=
 ▌SN_2024iss - 2024-05-14 00:11:01 LT / SPRAT (OxQUB)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
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▌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
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌Gaia_Gaia-photometric_G
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌PS1_GPC1_z
 ▌PS1_GPC1_i
 ▌Other_Other_Clear
   
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
17338 2024-05-24 23:43:37 LT / SPRAT 900 Robotic OxQUB tns_2024iss_2024-05-24_23-43-36.674_LT_SPRAT_OxQUB.txt Object
17147 2024-05-14 23:25:14 LT / SPRAT Daniel Perley, Jacob Wise, K-Ryan Hinds, Aleksandra Bochenek Jacob Wise ZTF tns_2024iss_2024-05-14_23-25-13.518_LT_SPRAT_ZTF.spec Object
17144 2024-05-14 00:11:01 LT / SPRAT 600 Robotic OxQUB tns_2024iss_2024-05-14_00-11-00.535_LT_SPRAT_OxQUB.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-1 2024-05-11 21:41:45 - 2024-05-12 21:36:46 2460442.403986 - 2460443.400532 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
406074 2024-05-12 21:36:46 2460443.400532 14.58 0.01 ABMag L-GOTO GOTO-N_GOTO-1 180
406073 2024-05-11 21:41:45 2460442.403986 19.5 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2024-05-13 05:53:05 - 2024-05-13 05:53:05 2460443.7451968 - 2460443.7451968 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
406109 2024-05-13 05:53:05 2460443.7451968 14.106 0.002 ABMag r-ZTF P48_ZTF-Cam 30 ZTFbot
406429 2024-05-13 05:53:05 2460443.7451968 20.4013 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2024-05-11 07:24:50 - 2024-05-15 06:10:17 2460441.808912 - 2460445.7571412 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
406431 2024-05-15 06:10:17 2460445.7571412 13.3172 0.0204367 ABMag g-ZTF P48_ZTF-Cam
406430 2024-05-13 07:17:02 2460443.8034954 13.7855 0.0224636 ABMag g-ZTF P48_ZTF-Cam
406108 2024-05-11 07:24:50 2460441.808912 20.325 ABMag g-ZTF P48_ZTF-Cam 30 ZTFbot [Last non detection]
G-Gaia Gaia_Gaia-photometric 2024-01-07 09:23:02 - 2024-05-31 05:16:48 2460316.891 - 2460461.72 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
415335 2024-05-31 05:16:48 2460461.72 13.22 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
415334 2024-01-07 09:23:02 2460316.891 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2024-05-08 09:25:03 - 2024-05-15 09:16:01 2460438.8924 - 2460445.88612 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
406546 2024-05-15 09:16:01 2460445.88612 13.396 0.005 19.35 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
406545 2024-05-08 09:25:03 2460438.8924 19.51 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
z-P1 PS1_GPC1 2024-05-24 08:24:56 - 2024-05-24 08:24:56 2460454.85065 - 2460454.85065 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
407470 2024-05-24 08:24:56 2460454.85065 13.61 0 20.4 ABMag z-P1 PS1_GPC1 27 Robot
i-P1 PS1_GPC1 2024-12-18 15:02:40 - 2024-12-18 15:02:40 2460663.12685 - 2460663.12685 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
454205 2024-12-18 15:02:40 2460663.12685 17.34 0.03 20.7 ABMag i-P1 PS1_GPC1 45 Robot
Clear- Other_Other 2024-03-13 23:58:41 - 2024-05-22 21:15:54 2460383.49909 - 2460453.38604 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
407273 2024-05-22 21:15:54 2460453.38604 13.1 17.4 VegaMag Clear- Other_Other 60 Robot MASTER-Tavrida
407272 2024-05-22 21:14:46 2460453.38525 13.1 17.4 VegaMag Clear- Other_Other 60 Robot MASTER-Tavrida
407271 2024-03-13 23:58:41 2460383.49909 19.8 VegaMag Clear- Other_Other 180 Robot [Last non detection] MASTER-Tavrida
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 Bibcode Unreal Auto classification
236549 2024-12-21 09:40:18 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 12:59:06.134 +28:48:42.56 2024-12-18 15:02:39.840 17.34 i-P1 PSN PS24cve Pan-STARRS N
216119 2024-06-28 13:04:58 Gaia_Bot1 S.T. Hodgkin,E. Breedt,A. Delgado et al. GaiaAlerts GaiaAlerts 12:59:06.130 +28:48:42.62 2024-05-31 05:16:48.000 13.22 G-Gaia PSN Gaia24bot GaiaAlerts confirmed SN IIb N
210928 2024-05-24 18:13:30 YSE_Bot1 D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al. YSE Pan-STARRS 12:59:06.136 +28:48:42.59 2024-05-24 08:24:56.160 13.61 z-P1 PSN PS24cve Pan-STARRS, YSE N
210790 2024-05-22 21:42:30 MASTER P.Balanutsa,V. Lipunov,V.Kornilov et al. MASTER MASTER 12:59:06.140 +28:48:42.80 2024-05-22 21:14:45.600 13.1 Clear- PSN MASTER OT J125906.14+284842.8 MASTER unfiltered N
210458 2024-05-15 19:13:04 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 12:59:06.144 +28:48:42.64 2024-05-15 09:16:00.768 13.396 orange-ATLAS PSN ATLAS24hhy ATLAS N
210403 2024-05-15 08:01:40 Fritz K-Ryan Hinds (LJMU),Jesper Sollerman (SU),Christoffer Fremling (Caltech) et al. ZTF ZTF 12:59:06.145 +28:48:42.67 2024-05-13 07:17:02.002 13.7855 g-ZTF PSN ZTF24aankvcy ZTF N
210246 2024-05-13 10:23:04 Ismael Perez-Fournon I. Pérez-Fournon,F. Poidevin,D. S. Aguado et al. SGLF ZTF 12:59:06.145 +28:48:42.67 2024-05-13 05:53:05.000 14.106 r-ZTF PSN SDSS J125906.43+284842.2 SGLF Independent ZTF detection of AT 2024iss (GOTO24bmf). The reported r-band magnitude is from ZTF forced photometry. The ZTF light curve is available at the ZTF/LSST brokers, e.g.: https://lasair-ztf.lsst.ac.uk/objects/ZTF24aankvcy/ https://alerce.online/object/ZTF24aankvcy https://antares.noirlab.edu/loci/ANT2024fb7rhfzml9sk N
210230 2024-05-13 00:41:40 GOTO_bot B. Godson,D. O'Neill,K. Ackley et al. GOTO GOTO 12:59:06.144 +28:48:42.45 2024-05-12 21:36:45.792 14.58 L-GOTO Other GOTO24bmf GOTO 2024TNSTR1494....1G N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
17251 2024-06-21 10:41:17 Shubham Srivastav S. Srivastav (Oxford), M. Fulton, M. Nicholl, C. R. Angus, K. W. Smith, D. R. Young, T. Moore, S. A. Sim (QUB), S. J. Smartt (Oxford/QUB), T.-W. Chen (NCU) OxQUB SN IIb 0.003334 1 OxQUB Follow-up LT spectrum shows prominent P-Cygni features of H-Balmer and also He I 5876. Light curve shows evidence of shock cooling tail, suggesting a IIb classification. 2024TNSCR2046....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
17338 2024-05-24 23:43:37 LT / SPRAT 900 Robotic OxQUB tns_2024iss_2024-05-24_23-43-36.674_LT_SPRAT_OxQUB.txt Object
17060 2024-05-15 10:52:13 Jacob Wise Jacob Wise (LJMU), K-Ryan Hinds (LJMU), Daniel Perley (LJMU), Aleksandra Bochenek (LJMU) ZTF SN II 0.00333 1 1Add ZTF Spectrum displays an emerging broad H-alpha component on top of a blue continuum, characteristic of a young Type II supernova. A plot of flux*(lambda^2) reveals the presence of an obvious H-alpha P-Cygni feature with a component that appears blueshifted by ~20000 km/s. H-beta and He-I features are also tentatively visible. A redshift of z = 0.00333 ± 0.00003 was obtained from the host. 2024TNSCR1533....1W
Related files
File Comments Last Modified (UT) Modified By
tns_2024iss_classrep_17060_ZTF.png 2024-05-15 10:52:13 Jacob Wise
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
17147 2024-05-14 23:25:14 LT / SPRAT Daniel Perley, Jacob Wise, K-Ryan Hinds, Aleksandra Bochenek Jacob Wise ZTF tns_2024iss_2024-05-14_23-25-13.518_LT_SPRAT_ZTF.spec Object
17057 2024-05-14 14:14:55 Shubham Srivastav S. Srivastav (Oxford), M. Fulton, M. Nicholl, C. R. Angus, K. W. Smith, D. R. Young, T. Moore, S. A. Sim, S. J. Smartt (Oxford/QUB), T.-W. Chen (NCU) OxQUB SN 0.003334 1 OxQUB Blue continuum with some weak, broad absorption features visible. The rapid rise in GOTO and ZTF light curves suggests a young SN II classification, but the spectral type is not obvious at this stage. 2024TNSCR1517....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
17144 2024-05-14 00:11:01 LT / SPRAT 600 Robotic OxQUB tns_2024iss_2024-05-14_00-11-00.535_LT_SPRAT_OxQUB.txt Object

Comments

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 216119 of Group GaiaAlerts
Previous RA, DEC: 12:59:06.136, +28:48:42.59 (194.77556833, +28.8118304405)
Updated RA, DEC: 12:59:06.130, +28:48:42.62 (194.775542, 28.811839)

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 210928 of Group Pan-STARRS
Previous RA, DEC: 12:59:06.145, +28:48:42.67 (194.7756059, +28.8118541)
Updated RA, DEC: 12:59:06.136, +28:48:42.59 (194.77556833, 28.8118304405)

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 210403 of Group ZTF
Previous RA, DEC: 12:59:06.145, +28:48:42.67 (194.775604, +28.811854)
Updated RA, DEC: 12:59:06.145, +28:48:42.67 (194.7756059, 28.8118541)

Ismael
Perez-Fournon

Sun, 12/22/2024 - 17:58

Las Cumbres Observatory g-band imaging

AT 2024iss, possible supernova in SDSS J125906.43+284842.2, a dwarf galaxy in the Coma cluster of galaxies

Left: Las Cumbres Observatory, Siding Spring node, 1m- telescope and Sinistro camera, SDSS-g', 10 sec, 2024-05-13 11:11:20 UT

Right: Legacy Survey DR10 g-band

See Pérez-Fournon et al. AstroNote 2024-130 https://www.wis-tns.org/astronotes/astronote/2024-130

2024iss_SGLF_LCOGT_Siding_Spring_g_13May2024.png
TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 210246 of Group ZTF
Previous RA, DEC: 12:59:06.144, +28:48:42.45 (194.775601, +28.811791)
Updated RA, DEC: 12:59:06.145, +28:48:42.67 (194.775604, 28.811854)