Supernovae 2021do in NGC 3147

This page is devoted to information on Supernova 2021do and Supernova 2021hpr in NGC 3147.   Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page.   Information on the original web pages for many of these images can be found on the links web page.

image Discovered by Zwicky Transient Facility (ZTF) (USA).   This one is a Type Ic.  
Just as it was fading, on the other side of the galaxy. image was discovered by Koichi Itagaki (Japan).   This one a Type Ia. We have a Photometry reference image made by Odd Trondal.   This supernova is in the Constellation Draco.

The following is a list of images of this SN, in chronological order. Click on the name in the "Image Credit" column to see the image. Times and dates are in UT unless otherwise noted. If you know of any others, please tell me!

Image CreditDateMagFilterComments
Odd Trondal 2021/01/05.0002021do
Giancarlo Cortini 2021/01/06.7402021do 17.3C
Monte Maggiore Observatory 2021/01/13.9202021do
Claudio Balcon 2021/01/16.9282021do 16.5C
Simone Bolzoni 2021/01/21.0492021do
Gianluca Masi 2021/02/11.9452021do 17.2R
Manfred Mrotzek 2021/02/12.9302021do
Michael Antoin 2021/02/20.0002021do
Robert Cazilhac 2021/03/01.8542021do 18.0C
K. Itagaki 2021/04/02.4492021hpr2021hpr discovery mirror
Andrea Mantero 2021/04/02.8072021hpr 17.5V
Mario Morales Aimar 2021/04/02.8412021hpr
Manfred Mrotzek 2021/04/02.8852021hprV
Robert Cazilhac 2021/04/02.9162021hpr 16.5C
Giancarlo Cortini 2021/04/02.9202021hpr 17.3C
Robert Cazilhac 2021/04/02.9162021do
2021hpr 16.5
CCDMike 2021/04/03.0002021hpr
Ivan Molnar 2021/04/03.8332021hprCcolor
Rafa Ferrando 2021/04/03.8682021hpr 17.0G
Odd Trondal 2021/04/03.9172021hprC
Vikrant Kumar Agnihotri 2021/04/04.6982021hpr
Mario Morales Aimar 2021/04/04.8382021hpr 16.7V
Paolo Campaner 2021/04/04.8412021hpr 16.3C
Gregor Krannich 2021/04/04.8872021hpr 14.5G
Giancarlo Cortini 2021/04/04.9102021hpr 17.0C
Gianluca Masi 2021/04/05.7842021hpr 15.5R
Carlos Segarra 2021/04/05.8332021hpr 15.8C
Yasuo Sano 2021/04/06.4962021hpr 15.5C
Giancarlo Cortini 2021/04/09.8702021hpr 14.7C
Rodrigo Losada 2021/04/10.9242021hpr 14.4C
Yasuo Sano 2021/04/11.4892021hpr 14.4C
Rafa Ferrando 2021/04/11.9482021hpr 14.5G

Light curves and Spectra:

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David Bishop