SN 2018kp
RA/DEC (2000)
10:46:33.070 +13:44:30.73
161.637792 +13.741869
Type
SN Ia
Redshift
0.010142
Source Group
SNHunt
Discovery Date
2018-01-24 08:42:06
TNS AT
Y
Public
Y
Host Name
NGC 3367
Host Redshift
0.010142
Discovery Mag
19.9
Filter
V-crts-CRTS
Discoverer/s
Nikolay Mishevskiy on behalf of CRTS

Spectra

 SN_2018kp - 2018-01-27 11:11:58 P60 / SEDM (ZTF)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)
Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
16832018-01-27 11:11:58P60 / SEDM3600Walters/Neill/BlagorodnovaNeillZTF tns_2018kp_2018-01-27_11-11-58_P60_SED-Machine_ZTF.txtObjectZTF
Light Curves
FilterTel / InstObs-date rangePhotometry
V-crts-CRTSOther_Other2018-01-14 09:01:28 - 2018-01-24 08:42:062
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
250012018-01-24 08:42:0619.921.5ABMagV-crts-CRTSOther_OtherMLS 10K CCD
250002018-01-14 09:01:2821.5ABMagV-crts-CRTSOther_Other[Last non detection] MLS 10K CCD
G-GaiaGaia_Gaia-photometric2018-01-12 03:10:04 - 2018-04-14 04:52:192
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
270422018-04-14 04:52:1918.330.2ABMagG-GaiaGaia_Gaia-photometric60Robot
270412018-01-12 03:10:0421.5ABMagG-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
177922018-04-16 08:46:54Gaia_Bot1A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts teamGaiaAlerts10:46:33.070+13:44:30.732018-04-14 04:52:1918.33G-GaiaPSNGaia18aymGaiaAlertsDetection of SN Ia SN2018kp in NGC 3367
166282018-01-24 21:57:12ajdNikolay Mishevskiy on behalf of CRTSSNHunt10:46:33.060+13:44:31.002018-01-24 08:42:0619.9V-crts-CRTSPSNCRTS, SNHunt
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
16782018-01-27 15:45:10neillJames NeillZTFSN Ia0.010142ZTFSNID match to SN1995D at +8 days

Comments

Object coordinates updated according to AT-report 17792 of Group GaiaAlerts
Previous RA, DEC: 10:46:33.060, +13:44:31.00 (161.63775, +13.741944)
Updated RA, DEC: 10:46:33.070, +13:44:30.73 (161.637792, 13.741869)

Today I observed in my observatory SN 2018kp.

SN 2018kp measured 16.16 +/- 0.05 with V as reference on stack of five images taken with a clear filter with T5 of iTelescope.net on 2018 February 5.400.

For some reason the link did not work correctly. Attached is the image.

SN 2018kp measured 17.1CV on 2018 January 29.435 which is nearly 3 magnitudes brighter than discovery. This further suggests the object is probably a young supernova that was discovered before maximum. Image: https://www.flickr.com/photos/146026104@N07/39975082721.

Given the redshift of the host galaxy, we find that this supernova had Mv~-13.3 when detected on 2018-01-24.
The transient was undoubtedly fainter than this on 2018-01-14. Thus, the SN is very unlikely to be a normal type-Ia at
8 days post-maximum on the 2018-01-27 (as noted by Neill et al. (2018)). Such a scenario would require the SN to suffer
from ~6 magnitudes of internal extinction through the arm of face-on spiral. The classification spectrum does not
appear consistent with such a high degree of reddening. Rather, we suggest that this is in fact much younger SN
than suggested by Neill et al. (2018).