RA/DEC (2000)
12:35:52.300 +27:55:55.50
188.967917 +27.932083
Type
LBV
Redshift
0.00261
Discovery ReportClassification Report
Reporting Group
None
Discovering Data Source
None
Discovery Date
2016-04-05 23:31:12.000
TNS AT
Y
Public
Y
Host Name
NGC 4559C / IC3550
Discovery Mag
17.1
Filter
Clear-
Reporter/s
Ron Arbour
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2016blu - 2019-03-04 07:52:22 P200 / DBSP (ZTF)z=
▌Show H at z=vexp= km/s
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▌Show N V 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
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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

 ▌PS2_GPC2_r
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌BAO-0.6m_BATC_Clear
 ▌Gaia_Gaia-photometric_G
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌Other_Other_L
 ▌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
7086 2019-03-04 07:52:22 P200 / DBSP 600 A. Dugas A. Ho ZTF tns_2016blu_2019-03-04_07-52-22_P200_DBSP_ZTF.ascii tns_2016blu_2019-03-04_07-52-22_P200_DBSP_ZTF.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-P1 PS2_GPC2 2022-06-01 06:30:23 - 2022-06-01 06:30:23 2459731.7711 - 2459731.7711 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
285951 2022-06-01 06:30:23 2459731.7711 19.61 0.11 20.6 ABMag r-P1 PS2_GPC2 27 Robot
r-ZTF P48_ZTF-Cam 2014-03-09 05:44:09 - 2014-03-09 05:44:09 2456725.7389931 - 2456725.7389931 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
56471 2014-03-09 05:44:09 2456725.7389931 19.69 ABMag r-ZTF P48_ZTF-Cam 30 ZTF
g-ZTF P48_ZTF-Cam 2018-12-28 12:25:56 - 2019-03-19 06:55:26 2458481.0180208 - 2458561.7884954 7
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
59905 2019-03-19 06:55:26 2458561.7884954 18.99 0.19 19.11 ABMag g-ZTF P48_ZTF-Cam 30
56472 2019-03-19 06:54:43 2458561.7879977 18.99 ABMag g-ZTF P48_ZTF-Cam 30 ZTF
60317 2019-03-01 07:08:21 2458543.7974653 18.11 0.13 20.22 ABMag g-ZTF P48_ZTF-Cam 30
59791 2019-03-01 07:08:21 2458543.7974653 18.11 0.13 20.22 ABMag g-ZTF P48_ZTF-Cam 30
60316 2019-02-26 10:27:20 2458540.9356481 19.29 0.1 20.48 ABMag g-ZTF P48_ZTF-Cam 30
59790 2019-02-26 10:27:20 2458540.9356481 19.29 0.1 20.48 ABMag g-ZTF P48_ZTF-Cam 30
59906 2018-12-28 12:25:56 2458481.0180208 19.59 0.23 19.67 ABMag g-ZTF P48_ZTF-Cam 30
Clear- BAO-0.6m_BATC 2019-03-01 17:51:23 - 2019-03-01 17:51:23 2458544.2440162 - 2458544.2440162 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
54855 2019-03-01 17:51:23 2458544.2440162 18.27 VegaMag Clear- BAO-0.6m_BATC
G-Gaia Gaia_Gaia-photometric 2015-11-05 07:04:48 - 2016-02-09 00:02:52 2457331.795 - 2457427.5019907 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
3844 2016-02-09 00:02:52 2457427.5019907 17.72 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
3843 2015-11-05 07:04:48 2457331.795 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2022-04-02 11:51:11 - 2022-04-03 08:41:37 2459671.99388 - 2459672.86223 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
287020 2022-04-03 08:41:37 2459672.86223 17.965 0.09 19.32 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
287019 2022-04-02 11:51:11 2459671.99388 19.43 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
L- Other_Other 2025-04-30 20:38:01 - 2025-05-02 14:32:53 2460796.35973 - 2460798.10617 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
485563 2025-05-02 14:32:53 2460798.10617 17 0.17 19 VegaMag L- Other_Other 60 Tao Chen Mewlon300+294M
485286 2025-05-01 14:18:21 2460797.09608 16.3 0.16 19.5 VegaMag L- Other_Other 60 Tao Chen Mewlon300CRS+294M
485279 2025-04-30 20:38:01 2460796.35973 17 0.14 19.5 VegaMag L- Other_Other 60 Tao Chen Mewlon300CRS+294M
Clear- Other_Other 2016-03-12 23:16:48 - 2022-05-26 22:19:12 2457460.47 - 2459726.43 10
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
284448 2022-05-26 22:19:12 2459726.43 15.9 0.2 18.9 VegaMag Clear- Other_Other 45 G.Duszanowicz 0.35m f/7.7 SCT
284447 2022-05-23 22:37:00 2459723.4423611 19.8 VegaMag Clear- Other_Other 45 G.Duszanowicz [Last non detection] 0.35m f/7.7 SCT
68377 2019-06-01 18:48:53 2458636.2839468 16.7 19 VegaMag Clear- Other_Other 40 Mi Zhang and Xing Gao Mi Zhang and Xing Gao, report the outburst of a LBV candidate (mag approximately 16.7) was discovered on severl 40-s survey images (limiting mag about 19.0) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Jun. 01.78395 UT using a unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ).
68376 2019-05-09 18:18:36 2458613.2629167 19 VegaMag Clear- Other_Other 40 Xing Gao [Last non detection]
16984 2017-05-14 21:21:36 2457888.39 17.2 19 Other Clear- Other_Other 30 Ron Arbour Units=V Instrument= C14 35cm f/6 + SXVR-H9 camera
16983 2017-05-10 21:07:12 2457884.38 19 Other Clear- Other_Other 30 Ron Arbour [Last non detection] Units=V Instrument= C14 35cm f/6 + SXVR-H9 camera
16150 2017-04-18 21:07:12 2457862.38 16.5 19 Other Clear- Other_Other 30 Ron Arbour Instrument=C14 35cm f/6 + SXVR-H9 camera Units= V
16149 2017-04-05 19:55:12 2457849.33 18.8 Other Clear- Other_Other 30 Ron Arbour [Last non detection] Instrument= C14 35cm f/6 + SXVR-H9 camera Units= V
2005 2016-04-05 23:31:12 2457484.48 17.1 18.8 Other Clear- Other_Other 30 Ron Arbour Instrument= C14 35cm f/6 + SXVF-H9 camera
2004 2016-03-12 23:16:48 2457460.47 18.8 Other Clear- Other_Other 30 Ron Arbour [Last non detection] Instrument= C14 35cm f/6 + SXVF-H9 camera
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
253404 2025-05-02 15:24:20 Yuan-Sheng Tsai Zhangwei Jin,Tao Chen,Jie-Lin Yang et al. JIST JIST 12:35:52.260 +27:55:55.20 2025-05-02 14:32:53.088 17 L- PSN NGC4559 JIST N
253286 2025-05-01 14:43:58 Yuan-Sheng Tsai Zhangwei Jin,Tao Chen,Jie-Lin Yang et al. JIST JIST 12:35:52.270 +27:55:55.30 2025-05-01 14:18:21.312 16.3 L- PSN NGC4559 JIST N
253282 2025-05-01 14:20:13 Yuan-Sheng Tsai Zhangwei Jin,Tao Chen,Jie-Lin Yang et al. JIST JIST 12:35:52.270 +27:55:55.20 2025-04-30 20:38:00.672 17 L- 1 PSN NGC4559 JIST N
Related files
File Comments Last Modified (UT) Modified By
tns_2022lai_atrep_253282_JIST.png 2025-05-01 14:20:21 Yuan-Sheng Tsai
149570 2022-06-06 08:04:17 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 12:35:52.290 +27:55:55.61 2022-04-03 08:41:36.672 17.965 orange-ATLAS PSN ATLAS18mmq ATLAS N
149062 2022-06-02 22:37:19 YSE_Bot1 D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al. YSE Pan-STARRS 12:35:52.287 +27:55:55.52 2022-06-01 06:30:23.040 19.61 r-P1 PSN PS22eva Pan-STARRS, YSE N
148391 2022-05-27 17:51:53 Grzegorz Duszanowicz Grzegorz Duszanowicz,Jordi Camarasa,Witold Caban et al. Moonbase search SN South 12:35:52.290 +27:55:55.40 2022-05-26 22:19:12.000 15.9 Clear- PSN NGC 4559 MSOSSP_10 Moonbase search SN South 2022TNSTR1452....1D N
36509 2019-06-01 20:14:13 Mi Zhang Mi Zhang and Xing Gao et al. XOSS XOSS 12:35:52.300 +27:55:55.80 2019-06-01 18:48:53.000 16.7 Clear- 1 Other NGC4559 XM13MZ XOSS Mi Zhang and Xing Gao, report the outburst of a LBV candidate (mag approximately 16.7) was discovered on severl 40-s survey images (limiting mag about 19.0) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Jun. 01.78395 UT using a unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). N
Related files
File Comments Last Modified (UT) Modified By
tns_2016blu_atrep_36509_XOSS.png 2019-06-01 20:38:30 Mi Zhang
32570 2019-04-09 10:16:02 ZTF_AMPEL_COMPLETE J. Nordin,V. Brinnel,M. Giomi et al. ZTF ZTF 12:35:52.296 +27:55:55.54 2019-02-26 10:27:20.000 19.29 g-ZTF PSN ZTF17aaapufz ZTF N
32420 2019-04-09 09:54:17 ZTF_AMPEL_COMPLETE J. Nordin,V. Brinnel,M. Giomi et al. ZTF ZTF 12:35:52.274 +27:55:55.73 2018-12-28 12:25:56.000 18.99 g-ZTF PSN ZTF17aaapufz ZTF N
32379 2019-04-09 09:07:34 ZTF_AMPEL_COMPLETE J. Nordin,V. Brinnel,M. Giomi et al. ZTF ZTF 12:35:52.298 +27:55:55.54 2019-02-26 10:27:20.000 19.29 g-ZTF PSN ZTF17aaapufz ZTF N
31103 2019-03-20 15:42:05 ZTF_Bot1 C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration et al. ZTF ZTF 12:35:52.280 +27:55:55.43 2014-03-09 05:44:09.000 19.69 r-ZTF PSN ZTF17aaapufz ZTF N
30419 2019-03-03 08:09:29 Hanjie Tan Hanjie Tan(NCU),Wenxiong Li(THU),Rongxin Wang(THU) et al. TNTS TNTS 12:35:52.310 +27:55:56.80 2019-03-01 17:51:23.000 18.27 Clear- Other NGC 4559C / IC3550 TNTS The outburst of LBV candidate was discovered by the 0.6 m Schmidt telescope at Xinglong Observatory during the Tsinghua-NAOC Transient Survey (TNTS). N
11515 2017-05-14 21:49:49 Ron Arbour Ron Arbour et al. 12:35:52.290 +27:55:56.30 2017-05-14 21:21:36.000 17.2 Clear- 1 Other NGC4559 AT Type= LBV Eruption N
Related files
File Comments Last Modified (UT) Modified By
tns_2016blu_atrep_11515.jpg 2017-05-15 00:03:13 Ron Arbour
10880 2017-04-18 21:39:02 Ron Arbour Ron Arbour et al. 12:35:52.310 +27:55:56.00 2017-04-18 21:07:12.000 16.5 Clear- 2 PSN NGC 4559 Outburst of LBV in NGC 4559 N
Related files
File Comments Last Modified (UT) Modified By
tns_2016blu_atrep_10880.jpg 2017-04-18 22:15:57 Ron Arbour
tns_2016blu_atrep_10880_0.jpg 2017-04-19 00:40:37 Ron Arbour
3306 2016-07-22 10:56:32 Gaia_Bot1 A. Delgado,D. Harrison,S. Hodgkin et al. GaiaAlerts GaiaAlerts 12:35:52.300 +27:55:55.50 2016-02-09 00:02:52.000 17.72 G-Gaia Other Gaia16ada GaiaAlerts transient near/in NGC4559C spatially coincident with candidate LBV with previous outbursts. N
1781 2016-04-06 13:47:00 Ron Arbour Ron Arbour et al. 12:35:52.300 +27:55:55.80 2016-04-05 23:31:12.000 17.1 Clear- Other NGC 4559C / IC3550 AT Type = LBV Outburst 2016TNSTR.266....1A N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
7074 2020-07-13 16:41:59 ZTF_Bot1 A. Dahiwale, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF LBV 0.00261 1 ZTF 2020TNSCR2126....1D
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
7086 2019-03-04 07:52:22 P200 / DBSP 600 A. Dugas A. Ho ZTF tns_2016blu_2019-03-04_07-52-22_P200_DBSP_ZTF.ascii tns_2016blu_2019-03-04_07-52-22_P200_DBSP_ZTF.fits Object

Comments

TNS
System

Thu, 12/04/2025 - 10:26

AT Report/s were associated with object

ATLAS AT report/s 149570 for 2022lai were associated with object AT2016blu.
Object 2022lai was removed from the system.

TNS
System

Thu, 12/04/2025 - 10:26

AT Report/s were associated with object

JIST AT report/s 253282, 253286, 253404 for 2022lai were associated with object AT2016blu.
Object 2022lai was removed from the system.

TNS
System

Thu, 12/04/2025 - 10:26

AT Report/s were associated with object

None AT report/s 148391 for 2022lai were associated with object AT2016blu.
Object 2022lai was removed from the system.

TNS
System

Thu, 12/04/2025 - 10:26

AT Report/s were associated with object

Pan-STARRS AT report/s 149062 for 2022lai were associated with object AT2016blu.
Object 2022lai was removed from the system.

TNS
System

Sun, 06/23/2019 - 10:43

Object coordinates updated

Object coordinates updated according to AT-report 3306 of Group GaiaAlerts
Previous RA, DEC: 12:35:52.300, +27:55:55.80 (188.967917, +27.932167)
Updated RA, DEC: 12:35:52.300, +27:55:55.50 (188.967917, 27.932083)