David's Astronomy Pages (Deep Sky) Astronomical Transients - 2020

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Transients 2021

This page documents observations and images of Astronomical Transients (AT) with discovery dates in 2020.  (Note: Supernovae with discovery dates in 2020 are presented on a separate page SN 2020 )  (Note: Some images may roll over into the following year)
Galactic Transients (2020)         Name, type, discovery date
Extragalactic Transients (2020)         Name, type, discovery date, host galaxy (if relevant)
AT 2020ue - Transient (2020-09-25) in NGC 772 (Unconfirmed)

Galactic Transients

Extragalactic Transients

AT 2020ue - Transient (discovered 2020-09-25) in NGC 772 (Unconfirmed)

NGC 772 with AT2020uex (Aries) AT 2020uex (Type Unkn), TNS discovered 2020/09/25.677 by Koichi Itagaki  (Rochester Supernova site | Discovery Image | Jordi Camarasa image (unconfirmed) | TNS 2020uex )

AT 2020uex - Image sequence  T+13.2d to T+41.2d (Transient discovery, T = 2020-09-25.677

NGC 772 with AT 2020uex (unconfirmed) - 2020-10-08  (T+13.2d)

Image below (2020-10-08.890) was taken 13.2 days after supposed discovery of AT 2020uex AT2020uex (position shown by white circle) is unconfirmed

Annotated CCD Image (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2020-10-08 21:21 UT (#817035-37) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 772 with AT 2020uex (unconfirmed) - 2020-10-25  (T+29.4d) Image below (2020-10-25.041) was taken 29.4 days after supposed discovery of AT 2020uex AT 2020uex (position shown by white circle) is unconfirmed

Annotated CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-10-25 00:59 UT (#821015-19) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 772 with AT2020uex (unconfirmed)  (T+41.2d) Image below (2020-11-05.877) was taken 41.2 days after supposed discovery of AT 2020uex AT 2020uex (position shown by white circle) is unconfirmed

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-11-05 21:03 UT (#827078-82) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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