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C/2021 A1 (Leonard)


NASA/JPL elements
IAU/MPC elements

Magnitude and Afrho plots

MPC reports dump

ICQ reports dump

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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
247902022 01 10.059590.54225C/2021 A1 (Leonard) 0.632 1.154Pict-07.509.2 --- - -350L 0.75.6X03pdelay
247222022 01 01.059581.53858C/2021 A1 (Leonard) 0.617 0.832Pict-06.108.8 --- - -350L 0.75.6X03jlvirlichie
248032021 12 30.959580.41196C/2021 A1 (Leonard) 0.622 0.757Pict-06.108.4 --- - -71R 16.5X03pdelay
246862021 12 28.059577.53047C/2021 A1 (Leonard) 0.631 0.680Pict-06.109 --- - -350L 1.45.6X03jlvirlichie
246632021 12 22.759572.24513C/2021 A1 (Leonard) 0.671 0.456Pict--- --- - -400L --A77jgbosch
246652021 12 22.759572.22222C/2021 A1 (Leonard) 0.671 0.456Pict-05.5- 10-- - -55A 5--fkugel
246642021 12 22.759572.20825C/2021 A1 (Leonard) 0.671 0.456Pict-09.611.6 --- - -400L 0.45.8A77fkugel
246512021 12 20.759570.21666C/2021 A1 (Leonard) 0.689 0.387Pict-03.7- 10-- - -55A 5--fkugel
246562021 12 20.759570.20555C/2021 A1 (Leonard) 0.689 0.387Pict-06.1- 3.30-- - -254L 0.74-L27jfsoulier
246442021 12 19.759569.20208C/2021 A1 (Leonard) 0.699 0.354Pict--- --- - -400L --A77jgbosch
246412021 12 19.759569.20138C/2021 A1 (Leonard) 0.699 0.354Pict--- --- - -400L --A77jgbosch
246292021 12 18.759568.21527C/2021 A1 (Leonard) 0.709 0.324Pict-05.1- 2.5-- - -55A 1--fkugel
246502021 12 18.759568.20555C/2021 A1 (Leonard) 0.709 0.324Pict-04.607.9 -6- - -256L 1.36-nbiver
246492021 12 18.759568.20138C/2021 A1 (Leonard) 0.709 0.324Pict-04.607.9 26- - -256L 1.36-nbiver
246482021 12 18.759568.20138C/2021 A1 (Leonard) 0.709 0.324Pict-04.607.9 26- - -256L 1.36-nbiver
246282021 12 17.659567.19444C/2021 A1 (Leonard) 0.720 0.297Pict--- --- - -254L --L27jfsoulier
246222021 12 16.759566.20138C/2021 A1 (Leonard) 0.731 0.273Pict-06.107.2 --- - -254L 0.746L27jfsoulier
246232021 12 16.659566.1993C/2021 A1 (Leonard) 0.731 0.273Pict-07.909.6 --- - -400L 0.45.8-fkugel
246212021 12 15.759565.2118C/2021 A1 (Leonard) 0.743 0.254Pict-03.3- --- - -55A ---fkugel
246112021 12 15.759565.2118C/2021 A1 (Leonard) 0.743 0.254Pict-05.806.9 --- - -254L 0.746L27jfsoulier
246102021 12 15.759565.21111C/2021 A1 (Leonard) 0.743 0.254Pict-07.808.2 --- - -400L 0.45.8-fkugel
245982021 12 14.759564.20555C/2021 A1 (Leonard) 0.755 0.241Pict-05.806.3 --- - -400L 0.45.8-fkugel
245972021 12 14.759564.20555C/2021 A1 (Leonard) 0.755 0.241Pict-05.706.8 5-- 45 -254L 0.746L27jfsoulier
245652021 12 11.259560.76307C/2021 A1 (Leonard) 0.792 0.242Pict--09.5 --- - -200L --Z97aleroy
245442021 12 09.259558.72708C/2021 A1 (Leonard) 0.818 0.276Pict-07.110.1 18-- - -76- 2.928.85A77fkugel
245432021 12 09.259558.72114C/2021 A1 (Leonard) 0.818 0.276Pict-0810 --- - -250L 0.746L27jfsoulier
245512021 12 09.259558.70613C/2021 A1 (Leonard) 0.818 0.276--08.111.2 --- - -400L 0.45.8A77fkugel
245462021 12 09.259558.70613C/2021 A1 (Leonard) 0.818 0.276Pict-07.609.6 --- - -400L 0.45.8A77jgbosch
245302021 12 07.259556.71368C/2021 A1 (Leonard) 0.846 0.326Pict-08.611 --- - -250L 0.746L27jfsoulier
245312021 12 07.159556.66121C/2021 A1 (Leonard) 0.846 0.326Pict-08.612.4 --- - 601400L 0.45.8A77fkugel
245242021 12 06.259555.72102C/2021 A1 (Leonard) 0.859 0.356Pict-08.211.9 --- - -400L 0.45.8A77jgbosch
245642021 12 06.259555.71211C/2021 A1 (Leonard) 0.859 0.356Pict--10.6 --- - -200L --Z97aleroy
245322021 12 06.259555.70415C/2021 A1 (Leonard) 0.859 0.356Pict--11.9 --- - -300L -5.74G20ydegotlonghi
245142021 12 06.159555.6673C/2021 A1 (Leonard) 0.859 0.356Pict-09.512.7 15-- - 523400L 0.45.8A77fkugel
245112021 12 05.159554.64393C/2021 A1 (Leonard) 0.873 0.387Pict-09.112.7 --- - 443400L 0.45.8A77fkugel
244972021 12 03.159552.69552C/2021 A1 (Leonard) 0.902 0.453Pict-09.412.9 --- - 463400L 0.45.8A77fkugel
244932021 12 03.159552.68869C/2021 A1 (Leonard) 0.902 0.453Pict--12.3 --- - -300L -5.74G20ydegotlonghi
244882021 12 02.259551.71298C/2021 A1 (Leonard) 0.917 0.487Pict-09.512.5 --- - 456400L 0.45.8A77fkugel
244872021 12 02.159551.67943C/2021 A1 (Leonard) 0.917 0.487Pict-08.812.3 --- - 459400L 0.45.8A77fkugel
244842021 12 01.159550.6427C/2021 A1 (Leonard) 0.931 0.522Pict--12.1 --- - -120R -7XXXjpdesgrees
244852021 12 01.159550.62638C/2021 A1 (Leonard) 0.931 0.522-Spec-- --- - -110R --K21hboussier
244822021 12 01.159550.6134C/2021 A1 (Leonard) 0.931 0.522--08.412.6 --- - 390400L 0.45.8A77fkugel
244792021 12 01.159550.60158C/2021 A1 (Leonard) 0.931 0.522Pict-08.713 --- - 504400L 0.45.8A77fkugel
244662021 11 30.259549.75356C/2021 A1 (Leonard) 0.946 0.558Pict-08.511.1 6.8-- - -76A 3.434.05A77fkugel
245072021 11 30.259549.72968C/2021 A1 (Leonard) 0.946 0.558Pict--11.4 --- - -200L --Z97aleroy
244782021 11 30.159549.69027C/2021 A1 (Leonard) 0.946 0.558Pict-09.611.6 -11 107.94 -106R 0.55.84XXXpleguen
244692021 11 30.159549.68789C/2021 A1 (Leonard) 0.946 0.558Pict-07.311.4 --- - -400L -5.8A77jgbosch
244742021 11 30.159549.6865C/2021 A1 (Leonard) 0.946 0.558Pict--12.3 --- - -300L -5.74G20ydegotlonghi
244622021 11 29.259548.7226C/2021 A1 (Leonard) 0.961 0.593Pict--12.3 --- - -300L -5.74G20ydegotlonghi
244572021 11 29.259548.71353C/2021 A1 (Leonard) 0.961 0.593Pict-09.613.2 --- - 636400L 0.45.8A77fkugel
244762021 11 29.159548.69722C/2021 A1 (Leonard) 0.961 0.593Pict-07.811.9 950.5 315 -407L 4.56-nbiver
244752021 11 29.159548.69444C/2021 A1 (Leonard) 0.961 0.593Pict-07.812.3 1050.53 316 -407L 4.86-nbiver
244442021 11 28.259547.72032C/2021 A1 (Leonard) 0.976 0.629Pict-1012.9 --- - 563400L 0.45.8A77fkugel
244512021 11 28.259547.70927C/2021 A1 (Leonard) 0.976 0.629Pict--12.3 --- - -300L -5.74G20ydegotlonghi
244402021 11 27.159546.64527C/2021 A1 (Leonard) 0.991 0.665Pict-11.213.8 --- - -400L 0.3356A77fkugel
244342021 11 26.159545.64858C/2021 A1 (Leonard) 1.006 0.701Pict-1113.8 --- - -400L 0.3356A77fkugel
244832021 11 23.259542.70059C/2021 A1 (Leonard) 1.051 0.810Pict-10.912.7 --- - -102R 0.46X00pdelay
244222021 11 23.159542.68749C/2021 A1 (Leonard) 1.051 0.810Pict-10.613.2 --- - 596400L 0.45.8A77fkugel
244202021 11 22.159541.69459C/2021 A1 (Leonard) 1.067 0.846Pict-09.912.7 --- - 573400L 0.45.8A77fkugel
244182021 11 22.159541.63247C/2021 A1 (Leonard) 1.067 0.846Pict-09.812.6 --- - 571400L 0.45.8A77fkugel
244172021 11 21.159540.67328C/2021 A1 (Leonard) 1.082 0.881Pict-10.312.9 --- - -400L -5.8A77jgbosch
244322021 11 20.259539.71259C/2021 A1 (Leonard) 1.098 0.917Pict--11.7 --- - -200L --Z97aleroy
244122021 11 20.259539.7066C/2021 A1 (Leonard) 1.098 0.917Pict-10.112.8 --- - 778400L 0.45.8A77fkugel
243982021 11 18.259537.70891C/2021 A1 (Leonard) 1.128 0.988Pict-10.512.5 --- - -400L 0.45.8A77fkugel
243942021 11 17.159536.6405C/2021 A1 (Leonard) 1.144 1.024Pict--11.9 --- - -120R -7XXXjpdesgrees
243782021 11 16.259535.70789C/2021 A1 (Leonard) 1.159 1.059Pict-10.513.2 9-- - -400L 0.45.8A77fkugel
243652021 11 14.159533.69766C/2021 A1 (Leonard) 1.190 1.129Pict-10.112.8 --- - -400L -5.8A77fkugel
243612021 11 13.159532.69924C/2021 A1 (Leonard) 1.206 1.164Pict-10.412.6 --- - 730400L 0.45.8A77fkugel
243692021 11 12.259531.74108C/2021 A1 (Leonard) 1.221 1.198Pict--12.3 --- - -200- --Z97aleroy
243532021 11 11.159530.69411C/2021 A1 (Leonard) 1.237 1.233Pict-10.813.4 --- - -400L 0.45.8A77fkugel
243472021 11 09.259528.71944C/2021 A1 (Leonard) 1.268 1.301-Spec-- --- - -254T --K10hboussier
243272021 11 09.259528.71489C/2021 A1 (Leonard) 1.268 1.301Pict-10.413.1 --- - -400L 0.45.8A77fkugel
243102021 11 06.259525.71319C/2021 A1 (Leonard) 1.314 1.401Pict-10.413.4 4.250.13 330 -407L 2.26-nbiver
243052021 11 06.159525.6738C/2021 A1 (Leonard) 1.314 1.401Pict-11.313.8 --- - -400L -5.8A77fkugel
242652021 10 29.259517.70193C/2021 A1 (Leonard) 1.438 1.660Pict-12.413.8 --- - 431400L 0.45.8A77fkugel
242512021 10 25.159513.68729C/2021 A1 (Leonard) 1.499 1.784Pict-11.514.4 --- - -400L 0.45.8A77jgbosch
242272021 10 24.159512.69069C/2021 A1 (Leonard) 1.514 1.814Pict-12.914.9 --- - -400L 0.45.8A77fkugel
242092021 10 19.159507.69344C/2021 A1 (Leonard) 1.590 1.962Pict-13.115.7 --- - -400L 0.45.8A77fkugel
241842021 10 16.159504.69484C/2021 A1 (Leonard) 1.635 2.048Pict-13.316 --- - -400L 0.45.8A77fkugel
241592021 10 14.159502.69547C/2021 A1 (Leonard) 1.665 2.105Pict--15.4 --- - -400L -5.8A77jgbosch
241792021 10 14.159502.66319C/2021 A1 (Leonard) 1.665 2.105Pict-12.214.8 250.05 340 -407L 1.26-nbiver
241302021 10 11.159499.67621C/2021 A1 (Leonard) 1.710 2.187Pict-13.415.5 --- - -400L 0.45.8A77fkugel
241362021 10 09.159497.69305C/2021 A1 (Leonard) 1.740 2.240Pict-12.415.4 1.530.07 340 -407L 1.46-nbiver
240972021 10 08.159496.66847C/2021 A1 (Leonard) 1.755 2.267Pict--16.1 --- - -400L -5.8A77fkugel
240422021 09 29.159487.6623C/2021 A1 (Leonard) 1.887 2.493Pict-12.815.4 --- - -400L 0.45.8A77fkugel
240172021 09 24.159482.66992C/2021 A1 (Leonard) 1.959 2.609Pict-13.215.4 --- - -400L 0.45.8A77fkugel
240072021 09 23.159481.66972C/2021 A1 (Leonard) 1.973 2.632Pict-1316.3 --- - -400L 0.45.8A77fkugel
239952021 09 22.159480.66831C/2021 A1 (Leonard) 1.988 2.654Pict-13.416.5 --- - -400L 0.45.8A77fkugel
239822021 09 19.159477.67854C/2021 A1 (Leonard) 2.031 2.719Pict-12.815.9 --- - -400L 0.88.3A77fkugel
239142021 09 05.859464.35694C/2021 A1 (Leonard) 2.227 2.991Pict-14.216.0 0.85- - -407L 0.56-nbiver
238342021 08 06.859434.3993C/2021 A1 (Leonard) 2.632 3.402Pict-15.617.0 0.850.02 50 -407L 0.56-nbiver
238332021 08 02.859430.38611C/2021 A1 (Leonard) 2.684 3.440Pict-15.717.1 0.65- - -407L 0.56-nbiver
235642021 07 05.859402.36561C/2021 A1 (Leonard) 3.041 3.604Pict--17.8 --- - -400L -5.8A77fkugel
235322021 06 29.859396.39086C/2021 A1 (Leonard) 3.116 3.619Pict--17.5 --- - -250L -6L27jfsoulier
234892021 06 12.859379.36552C/2021 A1 (Leonard) 3.323 3.631---17.9 --- - -400L -5.8A77fkugel
238412021 06 07.959374.46875C/2021 A1 (Leonard) 3.383 3.629Pict-16.918.1 0.65- - -407L 0.56-nbiver
234022021 05 30.859366.36111C/2021 A1 (Leonard) 3.478 3.620Pict--17.7 --- - -400L -5.8A77fkugel
233942021 05 27.959363.44076C/2021 A1 (Leonard) 3.514 3.616Pict--17.6 --- - -300L -6.5C10jfsoulier
233892021 05 24.859360.37105C/2021 A1 (Leonard) 3.549 3.611Pict--17.8 --- - -400L -5.8A77fkugel
233822021 05 19.859355.36289C/2021 A1 (Leonard) 3.607 3.604Pict--16.4 --- - -400L -5.8A77jgbosch
233732021 05 15.859351.36004C/2021 A1 (Leonard) 3.654 3.598Pict--17.9 --- - -1230- --493aleroy
233532021 05 08.859344.33252C/2021 A1 (Leonard) 3.735 3.588Pict--18 --- - -400L -5.8A77jgbosch
233372021 05 05.859341.34436C/2021 A1 (Leonard) 3.769 3.585Pict--17.9 --- - -400L -5.8A77fkugel
232842021 04 23.959329.42409C/2021 A1 (Leonard) 3.906 3.580Pict--16.8 --- - -400L -5.8A77jgbosch
232612021 04 21.959327.47036C/2021 A1 (Leonard) 3.929 3.581Pict--17.8 --- - -250L -6C10jfsoulier
232442021 04 20.059325.54807C/2021 A1 (Leonard) 3.940 3.582Pict--17.9 --- - -300L -6.5C10jfsoulier
232432021 04 20.059325.54807C/2021 A1 (Leonard) 3.940 3.582Pict--17.9 --- - -300L -6.5C10jfsoulier
232162021 04 14.959320.49175C/2021 A1 (Leonard) 4.007 3.589Pict--18.6 --- - -400L -5.8A77fkugel
231502021 04 02.159307.63148C/2021 A1 (Leonard) 4.140 3.625Pict--18.3 --- - -400L -5.8A77fkugel
230972021 03 20.859295.37657C/2021 A1 (Leonard) 4.283 3.701Pict--18 --- - -300L -6.5C10jfsoulier
230052021 02 27.959274.49918C/2021 A1 (Leonard) 4.509 3.917Pict--18.2 --- - -300L -6.5C10jfsoulier
229032021 01 26.259241.73923C/2021 A1 (Leonard) 4.845 4.452Pict--18.9 --- - -400L -5.8A77fkugel
228812021 01 18.159233.6967C/2021 A1 (Leonard) 4.927 4.615Pict--18.1 --- - -400L -5.8A77fkugel
228672021 01 16.159231.64836C/2021 A1 (Leonard) 4.947 4.657Pict--19.2 --- - -400L -5.8A77fkugel

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