RA/DEC (2000)
12:15:51.289 +13:06:56.13
183.963702453 +13.1155916839
Type
SN Ia
Redshift
0.001183
Discovery ReportClassification Report
Related AstroNotes: 2024-6, 2025-31
Reporting Group
None
Discovering Data Source
None
Discovery Date
2024-01-04 16:16:12.000
TNS AT
Y
Public
Y
Host Name
NGC4216
Discovery Mag
16.3
Filter
Clear-
Reporter/s
Koichi Itagaki
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2024gy - 2024-01-20 02:06:00 Other / Other (None)z=
 ▌SN_2024gy - 2024-01-19 07:09:34 Other / Other (None)z=
 ▌SN_2024gy - 2024-01-07 02:51:48 Other / Other (None)z=
 ▌SN_2024gy - 2024-01-05 11:36:57 FTN / FLOYDS-N (Global SN Project)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 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
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▌Show Tellurics 
▌Show Galaxy lines at z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌GOTO-N_GOTO-2_L
 ▌PS2_GPC2_w
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ASASSN-4_Leavitt_g
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌PS1_GPC1_g
 ▌ASASSN-1_Brutus_g
 ▌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
16547 2024-01-20 02:06:00 Other / Other 1200 Claudio Balcon Claudio Balcon None tns_2024gy_2024-01-20_02-06-00_Other_Other.dat tns_2024gy_2024-01-20_02-06-00_Other_Other.fit Object We obtained the low-resolution spectrum using the FOSC-E5535 spectrograph attached to a 0.41m telescope, in the course of Italian Supernovae Search Project.
16553 2024-01-19 07:09:34 Other / Other 720 M. Borland M. Borland None tns_2024gy_2024-01-19_07-09-34_Other_Other.dat Object ALPY 600 on 120-mm APO refractor at f/7. HD97633 used as reference star at 34 degree altitude. Data collected from 26 to 70 deg altitude, corrected back to reference altitude.
16449 2024-01-07 02:51:48 Other / Other 2401 R Leadbeater R Leadbeater None tns_2024gy_2024-01-07_02-51-48_Other_Other.dat tns_2024gy_2024-01-07_02-51-48_Other_Other.fit Object R~130 spectrum obtained using modified ALPY spectrograph at Three Hills Observatory as described here http://www.threehillsobservatory.co.uk/astro/spectroscopy_20.htm
16439 2024-01-05 11:36:57 FTN / FLOYDS-N 1800 Las Cumbres Observatory Megan Newsome Global SN Project tns_2024gy_2024-01-05_11-36-57_FTN_FLOYDS-N_Global_SN_Project.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2023-12-31 05:40:13 - 2023-12-31 05:40:13 2460309.73626 - 2460309.73626 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
385155 2023-12-31 05:40:13 2460309.73626 19.1 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
w-P1 PS2_GPC2 2024-03-14 09:04:27 - 2024-03-14 09:04:27 2460383.87809 - 2460383.87809 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
400850 2024-03-14 09:04:27 2460383.87809 15.13 0 22 ABMag w-P1 PS2_GPC2 45 Robot
L-GOTO GOTO-N_GOTO-1 2024-01-06 05:00:19 - 2024-01-06 05:00:19 2460315.708548 - 2460315.708548 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
385156 2024-01-06 05:00:19 2460315.708548 15.4 0.01 ABMag L-GOTO GOTO-N_GOTO-1 180
r-ZTF P48_ZTF-Cam 2024-01-05 12:09:58 - 2024-01-05 12:09:58 2460315.00692 - 2460315.00692 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
385500 2024-01-05 12:09:58 2460315.00692 20.4529 ABMag r-ZTF P48_ZTF-Cam 30 None [Last non detection]
g-ZTF P48_ZTF-Cam 2024-01-13 11:36:23 - 2024-01-13 11:36:23 2460322.9836 - 2460322.9836 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
385501 2024-01-13 11:36:23 2460322.9836 13.2774 20.3575 ABMag g-ZTF P48_ZTF-Cam 30 None
g-Sloan ASASSN-4_Leavitt 2023-12-31 10:48:00 - 2023-12-31 10:48:00 2460309.95 - 2460309.95 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
384054 2023-12-31 10:48:00 2460309.95 17.5 ABMag g-Sloan ASASSN-4_Leavitt [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2024-01-06 13:54:17 - 2024-01-06 13:54:17 2460316.07936 - 2460316.07936 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
384752 2024-01-06 13:54:17 2460316.07936 15.309 0.012 19.54 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
orange-ATLAS ATLAS-HKO_ATLAS-02 2023-12-30 14:22:15 - 2023-12-30 14:22:15 2460309.09878 - 2460309.09878 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
384751 2023-12-30 14:22:15 2460309.09878 18.91 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
g-P1 PS1_GPC1 2024-01-07 13:47:13 - 2024-01-07 13:47:13 2460317.07446 - 2460317.07446 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
384858 2024-01-07 13:47:13 2460317.07446 14.8 0.01 21 ABMag g-P1 PS1_GPC1 27 Robot
g-Sloan ASASSN-1_Brutus 2024-01-05 11:02:24 - 2024-01-05 11:02:24 2460314.96 - 2460314.96 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
384055 2024-01-05 11:02:24 2460314.96 16 ABMag g-Sloan ASASSN-1_Brutus
Clear- Other_Other 2010-03-23 20:28:31 - 2024-03-28 22:15:18 2455279.35314 - 2460398.42729 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
397637 2024-03-28 22:15:18 2460398.42729 14.6 17.8 VegaMag Clear- Other_Other 60 Robot MASTER-Kislovodsk
397636 2024-03-28 21:43:09 2460398.40497 15 17.8 VegaMag Clear- Other_Other 60 Robot MASTER-Kislovodsk
383753 2024-01-04 16:16:12 2460314.1779167 16.3 VegaMag Clear- Other_Other 0.5m-F6.7
397635 2010-03-23 20:28:31 2455279.35314 20.3 VegaMag Clear- Other_Other 180 Robot [Last non detection] MASTER-Kislovodsk
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
207605 2024-04-12 17:02:40 PS1_Bot1 K. C. Chambers, T. de Boer, J. Herman et al. Pan-STARRS Pan-STARRS 12:15:51.289 +13:06:56.13 2024-03-14 09:04:26.976 15.13 w-P1 PSN PS24gf Pan-STARRS N
206197 2024-03-30 01:20:34 MASTER Ya.Kechin, V. Lipunov, V.Kornilov et al. MASTER MASTER 12:15:51.270 +13:06:56.80 2024-03-28 21:43:09.408 15 Clear- PSN MASTER OT J121551.27+130656.8 MASTER LVC Inspect GRB240229A N
199595 2024-01-13 12:02:28 ZTF_CLU_PUBLIC K. De (Caltech) on behalf of ZTF ZTF ZTF 12:15:51.301 +13:06:55.95 2024-01-13 11:36:23.040 13.2774 g-ZTF PSN ZTF24aaaiocv ZTF N
199412 2024-01-09 12:13:13 GOTO_bot T. Killestein, L. Kelsey, E. Wickens et al. GOTO GOTO 12:15:51.295 +13:06:56.03 2024-01-06 05:00:18.720 15.4 L-GOTO Other GOTO24J GOTO This transient was discovered with the assistance of the GOTO Kilonova Seekers Citizen Scientists on Zooniverse. The candidate was flagged by volunteers Jose Alberto da Silva Campos, Dimitri Ferreira Lima, Antonio Pasqua, Svetoslav Alexandrov, Cledison Marcos da Silva N
199242 2024-01-07 17:01:20 YSE_Bot1 D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello et al. YSE Pan-STARRS 12:15:51.290 +13:06:56.12 2024-01-07 13:47:13.344 14.8 g-P1 PSN PS24gf Pan-STARRS, YSE N
199191 2024-01-07 00:34:14 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 12:15:51.293 +13:06:56.15 2024-01-06 13:54:16.704 15.309 orange-ATLAS PSN ATLAS24aiq ATLAS N
198871 2024-01-05 15:14:04 Krzysztof Stanek K. Z. Stanek, C. S. Kochanek, for the ASAS-SN team ASAS-SN ASAS-SN 12:15:51.408 +13:06:57.42 2024-01-05 11:02:24.000 16 g-Sloan PSN NGC 4216 ASASSN-24ac ASAS-SN Present in two epochs, nearby host galaxy N
198753 2024-01-05 03:02:23 Koichi Itagaki Koichi Itagaki 12:15:51.310 +13:06:56.10 2024-01-04 16:16:12.000 16.3 Clear- PSN NGC4216 2024TNSTR..39....1I N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
16466 2024-01-24 02:41:34 Michael Borland Michael Borland None SN Ia 1 2024TNSCR.247....1B
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
16553 2024-01-19 07:09:34 Other / Other 720 M. Borland M. Borland None tns_2024gy_2024-01-19_07-09-34_Other_Other.dat Object ALPY 600 on 120-mm APO refractor at f/7. HD97633 used as reference star at 34 degree altitude. Data collected from 26 to 70 deg altitude, corrected back to reference altitude.
16460 2024-01-20 07:40:22 Claudio Balcon Claudio Balcon (Belluno A.O. ISSP) None SN Ia 0.001183 1 GELATO (Harutyunyan et al., 2008, A&A, 488, 383) suggests that this spectrum resembles that of a type Ia supernova close to Bmax at the redshift of the host galaxy, value from NED. 2024TNSCR.215....1B
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
16547 2024-01-20 02:06:00 Other / Other 1200 Claudio Balcon Claudio Balcon None tns_2024gy_2024-01-20_02-06-00_Other_Other.dat tns_2024gy_2024-01-20_02-06-00_Other_Other.fit Object We obtained the low-resolution spectrum using the FOSC-E5535 spectrograph attached to a 0.41m telescope, in the course of Italian Supernovae Search Project.
16362 2024-01-07 15:53:05 Robin Leadbeater Robin Leadbeater None SN Ia 0.001183 1 1 Good match to type 1a norm a few days before maximum 2024TNSCR..69....1L
Related files
File Comments Last Modified (UT) Modified By
tns_2024gy_classrep_16362.png SNID best match 2024-01-07 15:53:05 Robin Leadbeater
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
16449 2024-01-07 02:51:48 Other / Other 2401 R Leadbeater R Leadbeater None tns_2024gy_2024-01-07_02-51-48_Other_Other.dat tns_2024gy_2024-01-07_02-51-48_Other_Other.fit Object R~130 spectrum obtained using modified ALPY spectrograph at Three Hills Observatory as described here http://www.threehillsobservatory.co.uk/astro/spectroscopy_20.htm
16353 2024-01-05 16:58:10 Megan Newsome Megan Newsome (LCO/UCSB), Joseph Farah, D. Andrew Howell, Curtis McCully, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran Global SN Project SN Ia 0.001183 1 1 Global SN Project Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to young SNe Ia, including a match to SN 2002bo 13 days before peak. The supernova is closest to SDSS J121551.28+130701.2 (z = 0.001183, 2016SDSSD.C...0000:, value from NED). Adopting this redshift we measure a Si II 6355 velocity of approximately 17,000 km/s. This velocity is consistent with an SN Ia approaching maximum light. Follow-up is encouraged. 2024TNSCR..44....1N
Related files
File Comments Last Modified (UT) Modified By
tns_2024gy_classrep_16353_Global_SN_Project.ps SNID fit to SN2002bo at 13 days before peak. 2024-01-05 16:58:10 Megan Newsome
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
16439 2024-01-05 11:36:57 FTN / FLOYDS-N 1800 Las Cumbres Observatory Megan Newsome Global SN Project tns_2024gy_2024-01-05_11-36-57_FTN_FLOYDS-N_Global_SN_Project.ascii Object

Comments

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 207605 of Group Pan-STARRS
Previous RA, DEC: 12:15:51.290, +13:06:56.12 (183.963709174, +13.1155880598)
Updated RA, DEC: 12:15:51.289, +13:06:56.13 (183.963702453, 13.1155916839)

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 199242 of Group Pan-STARRS
Previous RA, DEC: 12:15:51.293, +13:06:56.15 (183.963718889, +13.1155977778)
Updated RA, DEC: 12:15:51.290, +13:06:56.12 (183.963709174, 13.1155880598)

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 199191 of Group ATLAS
Previous RA, DEC: 12:15:51.310, +13:06:56.10 (183.963792, +13.1155833)
Updated RA, DEC: 12:15:51.293, +13:06:56.15 (183.963718889, 13.1155977778)

Ofer
Yaron

Sun, 12/22/2024 - 17:58

Dec corrected from 26.10 to 56.10

following the reporters' request, due to a typo.

Ismael
Perez-Fournon

Sun, 12/22/2024 - 17:58

Las Cumbres Observatory (McDonald node) SDSS g' image

LCOGT (McDonald node) 1m+Sinistro imaging of SN 2024gy. 

60 sec exposure in SDSS g'.

2024-01-05 11:56:59 UTC.

The measured position RA = 12:15:51.285, Dec = +13:06:56.10 (J2000)
agrees with the one reported by Yamaoka (correction to Itagaki's initial report) and
Yoshimoto.

SN_2024gy_in_NGC_4216_LCOGT_McDonald_g_5Jan2024.png
TNS
System

Sun, 12/22/2024 - 17:58

AT Report/s were associated with object

ASAS-SN AT report/s 198871 for 2024ix were associated with object 2024gy.
Object 2024ix was removed from the system.

Katsumi
Yoshimoto

Sun, 12/22/2024 - 17:58

Follow-up observation

2024-01-05 12:21:00,
Photometry V mag =15.70, position RA 12:15:51.29, DEC +13:06:56.1, using 0.43-m f/6.8 reflector + CCD; Utah Desert Remote Observatory.

AT2024gy_20240105.jpg
Hitoshi
Yamaoka

Sun, 12/22/2024 - 17:58

correction

The correct declination end figures are 56".10.  Sorry for confusion.

Hitoshi
Yamaoka

Sun, 12/22/2024 - 17:58

Re-submit for AT 2023acjv

This object has been reported with an incorrect discovery year.  He tried to re-submit it but failed.

So now he reported it with incorrect position (Decl.).  The correct declination end figures are 26".10.