SN 2017eaw
RA/DEC (2000)
20:34:44.24 +60:11:35.90
308.684333 +60.193306
Discovery Date
2017-05-14 05:42:43
Host Name
NGC 6946
Discovery Mag
Patrick Wiggins
 2017-05-19 21:41:15 Other / Other
 2017-05-14 19:03:12 BAO-2.16m / Cassegrain
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See separate spectra
IDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
10252017-05-19 21:41:15Other / Other3635D Verilhac &al D Verilhac tns_2017eaw_2017-05-19_21-41-15_Other_Other.dat tns_2017eaw_2017-05-19_21-41-15_Other_Other.fitObjectMy first contribution (comments will be welcome !-) Tel: 600 mm F/D=8 spectro Lisa R+/- 700 Aquired at in France
10082017-05-14 19:03:12BAO-2.16m / Cassegrain900J. Fu(BNU),F. Xiao(NAOC)D. Xiang(THU) tns_2017eaw_2457888.2939_BAO-2.16m_Cassegrain.txtObjectTNTSA 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
FilterTel / InstObs-date rangePhotometry
Clear-Other_Other2017-05-12 04:48:00 - 2017-05-14 05:42:432
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
169742017-05-14 05:42:4312.819OtherClear-Other_OtherPatrick Wiggins
169732017-05-12 04:48:0019OtherClear-Other_OtherPatrick Wiggins[Last non detection]
G-GaiaGaia_Gaia-photometric2017-05-06 12:44:38 - 2017-06-08 22:37:552
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
177452017-06-08 22:37:5512.870.2ABMagG-GaiaGaia_Gaia-photometric60Robot
177442017-05-06 12:44:3821.5ABMagG-GaiaGaia_Gaia-photometricRobot[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
119712017-06-12 11:58:26Gaia_Bot1A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts teamGaiaAlerts20:34:44.24+60:11:35.842017-06-08 22:37:5512.87G-GaiaPSNGaia17bmyGaiaAlertsvery bright confirmed SN IIP, in galaxy NGC 6946, aka SN2017eaw
115112017-05-14 09:09:08BischmisheimPatrick Wiggins20:34:44.24+60:11:35.902017-05-14 05:42:4312.8Clear-PSNP. 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 Wiggins notes that nothing was visible at this position on an image taken on May 12.
Related files
FileFile TypeCommentsLast Modified (UT)Modified By
tns_2017eaw_atrep_11511.jpgGraphicsDiscovery image2017-05-14 09:09:08Bischmisheim
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
10222017-05-31 21:14:12Daniel VerilhacDaniel VerilhacSN IIType 2 ?
9982017-05-14 23:06:24Danfeng XiangD. Xiang, L. Rui, X. Wang(THU), F. Xiao(NAOC), J. Fu(BNU), T. Zhang(NAOC), J. Zhang(YNAO)SN IIPTNTS


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