Comet C/2019 Y4 (ATLAS) on 12.04.2020 over LBN 702

  Size: 1800 px      
© Velimir Popov & Emil Ivanov 2020
Comet C 2019 Y4 was discovered on December 28th 2019 by Asteroid Terrestrial-Impact Last Alert System (ATLAS) search program. At the time of discovery the comet was from 19.6 mag. This image shows the comet on April 12th 2020, when the comet was visibly over the molecular complex LBN 702 in Ursa Major. Below is shown an image combining RGB data from IRIDA - North telescope and higher resolution L image obtained with the 12" RC telescope of IRIDA - South. Clearly visible is the proces of fragmentation of the comet nuclei:

Animation, which shows the proper motion of the comet in the period of two hours. Here also can be seen the irregular form of the nuclei:

Image details:


Center of field RA
06:41:42 (h:m:s)
Center of field DE
+66:36:59 (deg:m:s)
1.89 x 1.26 (deg)
Pixel scale:
4.25 arcsec/pixel
Up is 66.9 degrees E of N
Charts and image details obtained from
Optic(s): ASA 12" Astrograph @ f/3.6 (Newton); 12" RC with Astro-Physics corrector @ f/5
Mount: ASA DDM85 Standard
Camera: SBIG STL 11000 M
Filters: Luminance, Red, Green, Blue, Astronomik filters
Dates/Times: 12.04.2020
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: L:6x3 min,R:6x3 min, G:6x3 min, B:6x3 min, Bin 2 Total exp. time 72 min.; for insets see information above
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013 - 2020. All Rights Reserved
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