RA/DEC (2000)
20:34:44.240 +60:11:35.84
308.684333 +60.193289
Type
SN II
Redshift
0.00013
Discovery ReportClassification Report
Reporting Group
None
Discovering Data Source
None
Discovery Date
2017-05-14 05:42:43.000
TNS AT
Y
Public
Y
Host Name
NGC 6946
Discovery Mag
12.8
Filter
Clear-
Reporter/s
Patrick Wiggins
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2017eaw - 2017-05-19 21:41:15 Other / Other (None)z=
 ▌SN_2017eaw - 2017-05-19 12:23:49 FTN / FLOYDS-N (None)z=
 ▌SN_2017eaw - 2017-05-14 19:03:12 BAO-2.16m / Cassegrain (None)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
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▌Show N II at z=vexp= km/s
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▌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
▌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

 ▌Gaia_Gaia-photometric_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
1025 2017-05-19 21:41:15 Other / Other 3635 D Verilhac &al D Verilhac None tns_2017eaw_2017-05-19_21-41-15_Other_Other.dat tns_2017eaw_2017-05-19_21-41-15_Other_Other.fit Object My first contribution (comments will be welcome !-) Tel: 600 mm F/D=8 spectro Lisa R+/- 700 Aquired at Clubastromars.org in France
2077 2017-05-19 12:23:49 FTN / FLOYDS-N 1200 Kilpatrick Kilpatrick None tns_2017eaw_2017-05-19_12-23-49_FTN_FLOYDS-N.flm Object
1008 2017-05-14 19:03:12 BAO-2.16m / Cassegrain 900 J. Fu(BNU),F. Xiao(NAOC) D. Xiang(THU) None tns_2017eaw_2457888.2939_BAO-2.16m_Cassegrain.txt Object A spectrum taken on UT May 14.79 2017 indicates that this transient is consistent with a type IIP supernova a few days after explosion.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
G-Gaia Gaia_Gaia-photometric 2017-05-06 12:44:38 - 2017-06-08 22:37:55 2457880.0309954 - 2457913.4429977 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
17745 2017-06-08 22:37:55 2457913.4429977 12.87 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
17744 2017-05-06 12:44:38 2457880.0309954 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
Clear- Other_Other 2017-05-12 04:48:00 - 2017-05-14 05:42:43 2457885.7 - 2457887.7379977 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
16974 2017-05-14 05:42:43 2457887.7379977 12.8 19 Other Clear- Other_Other Patrick Wiggins
16973 2017-05-12 04:48:00 2457885.7 19 Other Clear- Other_Other Patrick Wiggins [Last non detection]
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
11971 2017-06-12 11:58:26 Gaia_Bot1 A. Delgado,D. Harrison,S. Hodgkin et al. GaiaAlerts GaiaAlerts 20:34:44.240 +60:11:35.84 2017-06-08 22:37:55.000 12.87 G-Gaia PSN Gaia17bmy GaiaAlerts very bright confirmed SN IIP, in galaxy NGC 6946, aka SN2017eaw N
11511 2017-05-14 09:09:08 Patrick Schmeer Patrick Wiggins et al. 20:34:44.240 +60:11:35.90 2017-05-14 05:42:43.000 12.8 Clear- 1 PSN NGC 6946 P. Wiggins, Tooele, UT, USA, reports his discovery of a possible supernova (mag about 12.8) on an unfiltered CCD frame taken 2017 May 14.2383 UT using a 0.35-m f/5.5 reflector near Erda, UT, USA. The new object is located at R.A. 20h34m44.24s, Decl. +60°11’35.9” (equinox 2000.0), about 153” NW of the center of NGC 6946. The discovery image was posted temporarily at URL http://users.wirelessbeehive.com/~paw/ngc6946-1.jpg. Wiggins notes that nothing was visible at this position on an image taken on May 12. 2017TNSTR.548....1W N
Related files
File Comments Last Modified (UT) Modified By
tns_2017eaw_atrep_11511.jpg Discovery image 2017-05-14 09:09:08 Patrick Schmeer
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
2072 2018-06-04 21:25:31 Charles Kilpatrick Charles Kilpatrick None SN II 0.00013 1 Swope SN Survey The spectrum clearly resembles a SN II with a Halpha FWHM=11,000 km/s. 2018TNSCR2102....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
2077 2017-05-19 12:23:49 FTN / FLOYDS-N 1200 Kilpatrick Kilpatrick None tns_2017eaw_2017-05-19_12-23-49_FTN_FLOYDS-N.flm Object
1022 2017-05-31 21:14:12 Daniel Verilhac Daniel Verilhac None SN II 1 Type 2 ? 2017TNSCR1525....1V
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
1025 2017-05-19 21:41:15 Other / Other 3635 D Verilhac &al D Verilhac None tns_2017eaw_2017-05-19_21-41-15_Other_Other.dat tns_2017eaw_2017-05-19_21-41-15_Other_Other.fit Object My first contribution (comments will be welcome !-) Tel: 600 mm F/D=8 spectro Lisa R+/- 700 Aquired at Clubastromars.org in France
998 2017-05-14 23:06:24 Danfeng Xiang D. Xiang, L. Rui, X. Wang(THU), F. Xiao(NAOC), J. Fu(BNU), T. Zhang(NAOC), J. Zhang(YNAO) None SN IIP 1 TNTS 2017TNSCR.552....1X
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
1008 2017-05-14 19:03:12 BAO-2.16m / Cassegrain 900 J. Fu(BNU),F. Xiao(NAOC) D. Xiang(THU) None tns_2017eaw_2457888.2939_BAO-2.16m_Cassegrain.txt Object A spectrum taken on UT May 14.79 2017 indicates that this transient is consistent with a type IIP supernova a few days after explosion.

Comments

TNS
System

Sun, 06/23/2019 - 10:43

Object coordinates updated

Object coordinates updated according to AT-report 11971 of Group GaiaAlerts
Previous RA, DEC: 20:34:44.240, +60:11:35.90 (308.684333, +60.193306)
Updated RA, DEC: 20:34:44.240, +60:11:35.84 (308.684333, 60.193289)

Denis
Denisenko

Sun, 05/14/2017 - 11:04

Color-combined confirmation image with iTelescope T24

Color-combined confirmation image of PSN 2017eaw in NGC 6946 obtained by D. Denisenko (SAI MSU) at 09:24-09:42 UT on 2017-05-14 remotely using iTelescope.Net 0.61-m f/6.5 T24 reflector in Auberry, CA. Sum of 3x60-sec exposures in RGB filters. Image scale is 1.25 arcsec per pixel, FOV cropped to 10'x10'. PSN position is 61" West and 143" North of NGC 6946 nucleus. Comparison of (3x60-sec) unfiltered T24 image on 09:20-09:23 UT with 1991 DSS Red plate is posted at http://scan.sai.msu.ru/~denis/SN/PSN-in-NGC6946-20170514-T24-DSS-anim.g…

PSN-in-NGC6946-20170514-T24-RGB.jpg