Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)
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Comet C/2021 A1 Leonard, 


            José J. Chambó
Comet C/2021 A1 Leonard
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Technical card

Imaging telescopes or lenses: Planewave 17" CDK

Imaging cameras: FLI Proline 6303E

Software: PixInsight 1.8

Dates:Feb. 12, 2021

Frames: 1x300"

Integration: 0.1 hours

Avg. Moon age: 0.71 days

Avg. Moon phase: 0.57%

Basic astrometry details

Astrometry.net job: 4255103

RA center: 14h 1' 43"

DEC center: +49° 31' 15"

Pixel scale: 2.458 arcsec/pixel

Orientation: 0.965 degrees

Field radius: 0.492 degrees

Resolution: 1200x800

Data source: Unknown


C/2021 A1 (Leonard) @ 2021 February 12, 11:45 UT

Comet C/2021 A1 (Leonard) imaged on February 12, 2021. Improving its appearance compared to my image in last month, its coma has increased in angular size to about 14 arcseconds, showing a small tail with about 18 seconds in lenght toward southwest. According to observations, its brightness has increased from magnitude 18.5 to 18.0.

Data and link to image:


Sky plot

Sky plot


Comet C/2021 A1 Leonard, 


            José J. Chambó