2021’s best comet is visible now

C/2021 A1 (Leonard) is likely to be 2021’s best comet. The magnitude of the comet becomes +8 on 13 December 2021 which is the highest. With this magnitude, the comet is an easy target for a telescope or a binocular. In a very clear dark sky, it is possible to see with the naked eye. The comet is visible early morning in the eastern sky close to the horizon. The best days of the observation are    8 – 11 December 2021 as the comet is getting closer to the horizon with time.

Sky Chart

Date (UT)        

HR:MN

R. A.

Dec

Azi. (Degrees)

Elev. (Degrees)

Magnitude

Range (AU)

2021-Dec-08

00:00   

14 59 05.52

+19 38 54.5  

72

23

8.8

0.29933973256080

2021-Dec-09

00:00   

15 22 37.91

+16 16 22.6  

75

18

8.6

0.27568592242866

2021-Dec-10

00:00   

15 49 12.36

+12 05 59.4  

79

12

8.0

0.25628162432985

2021-Dec-11

00:00   

16 18 33.13

+07 07 45.1

83

6

8.0

0.24223095282782

 

2021-Dec-12

00:00   

16 49 58.88

+01 32 00.9

88

-2

8.0

0.23457515864192

 

2021-Dec-13

00:00   

17 22 23.45

-04 19 15.4

93

-9

8.0

0.23401305618886

 

2021-Dec-14

00:00   

17 54 26.84

-09 58 09.0

98

-17

8.0

0.24065487684295

 

2021-Dec-15

00:00   

18 24 53.24

-15 01 01.7

103

-24

8.0

0.25398503684520

 

Note: The given magnitude may not be accurate. Source: Solar System Dynamics-Horizon System, NASA

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