Comet C/2021 A1 (Leonard)


Comet C/2021 A1 (Leonard)

Object Data

Object type: Solar system - Comet
Magnitude: 6
Constellation: Bootes
Distance: 0.4 AU;  60.4 million km or 3.36 light-minutes

Discovered by G.J. Leonard on 1/3/21 at Mt Lemmon Observatory when it was 5 AU from the sun.

The bright star to the left is 9 Bootis a 5th magnitude K3 (orange) giant

To see an animation of the comet moving across the sky over a 1 hr period (2:56 - 3:58 am), click here

Exposure Data

Date: 12/04; 3:00am
Location: Little Blair Valley, Anza Borrego Desert, CA
Telescope: TEC 140 refractor (980mm fl at f/7.2)
Camera: FLI 6303 microline with Astrodon LRGB filters
Mount: AP1100 GTO CP3
Exposure time: Single 2-minute exposures of LRGB
Exposure time total: 8 minutes 
The comet was moving very quickly through Bootes that any attempt to register and combine multiple exposures was futile.  Decided to combine single 2-minute exposures of LRGB for this image.

FOV = 97 x 65 arc min.  Imaged reduced to 50% of original



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