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COMET OBSERVATIONS

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C/2021 A4 (NEOWISE)

Orbital period : 281.90 years

NASA/JPL elements
IAU/MPC elements

Magnitude and Afrho plots

MPC reports dump

ICQ reports dump

Pictures gallery

Spectrums gallery

Statistics



Num Date
[TU]
 Julian day
-2400000		 Comet/Object Name r
(/Sun)
[AU]		 d
(/Earth)
[AU]		 Pict
 Spec
 Coma
Total
mag
(m1)
 Nuclear
mag
(m2)
 Coma
diameter
[']
 Coma
conden
sation		 Tail
length
[°]		 Tail
position
angle
[°]		 Afrho
[cm]		 Instr
diameter
[mm]		 Instr m1
aperture
radius
[']
 m2
aperture
radius
["]
 Obs
MPC
code		 Who
230512021 03 10.859285.33513C/2021 A4 (NEOWISE) 1.157 0.896Pict--15.1 --- - -120R -7XXXjpdesgrees
230432021 03 09.859284.3052C/2021 A4 (NEOWISE) 1.159 0.870Pict-13.516.3 --- - -400L 0.45.8A77fkugel
230332021 03 07.759282.28933C/2021 A4 (NEOWISE) 1.164 0.821Pict--14.6 --- - -400L -5.8A77jgbosch
230132021 03 01.759276.28332C/2021 A4 (NEOWISE) 1.184 0.675Pict--16.3 --- - -400L -5.8A77fkugel
229662021 02 15.759262.2508C/2021 A4 (NEOWISE) 1.258 0.441Pict--15 --- - -400L -5.8A77fkugel
229572021 02 11.759258.26059C/2021 A4 (NEOWISE) 1.285 0.436Pict--15.4 --- - -200L -6.81G20ydegotlonghi
229402021 02 07.859254.34897C/2021 A4 (NEOWISE) 1.313 0.467Pict--15.5 --- - -200L -6.81G20ydegotlonghi
229222021 02 03.959250.40566C/2021 A4 (NEOWISE) 1.344 0.528Pict--16.5 --- - -400L -5.8A77fkugel
228682021 01 16.159231.68416C/2021 A4 (NEOWISE) 1.504 0.974Pict--19.1 --- - -400L -5.8A77fkugel

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