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Astrometric data for minor planet center
COD B96
CON E. Bryssinck, BRIXIIS Observatory, 9150 Kruibeke , Belgium
OBS E. Bryssinck
MEA E. Bryssinck
TEL 0.4-
ACK MPCReport file updated 2020.07.23 19:34:47
NET Gaia DR2
CK20F030 C2020 07 22.89523 10 24 57.28 +44 52 52.5 9.0 G B96
CK20F030 C2020 07 22.89661 10 24 58.92 +44 52 45.5 9.0 G B96
CK20F030 C2020 07 22.89771 10 25 00.23 +44 52 40.3 9.0 G B96
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Comet C/2020 F3 (NEOWISE) -
Af(rho) data according the CARA-
Photometric data obtained from FOCAS-
COD B96
OBS BRIXIIS Observatory
CATALOG: Gaia DR2 -
10x10 20x20 30x30 40x40 50x50 60x60 SNR SB COD
COMET UTC +/-
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C/2020 F3 22/07/2020 21:30:54 8.23 7.12 6.54 6.16 5.89 5.69 37.9 16.7 B96
C/2020 F3 22/07/2020 21:30:54* 0.01 0.01 0.00 0.01 0.01 0.01 10 3.1 Gai
AFRHO LOG
COMET UTC DELTA r BOX " MAG RSR CM +/-
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C/2020 F3 22/07/2020 21:30:54 0.69 0.63 39.86 6.20 38 5998 158 3.778 B96
FoCAs 3.66
www.astrosurf.com/cometas-
es.groups.yahoo.com/group/Cometas_Obs
Afρ [cm] vs. core distance (in km) -
Afρ parameter according CARA approach
Image of comet C/2020 F3 (NEOWISE) taken on 22 july while this comet was on about 140 milljon km from earth and about 94 million km from the sun. Image taken from my backyard observatory with a 0.4-
Below is a high resolution spectrum of the sodium doublet which was observed in the coma of the comet, just after the perihelion. By the time this spectrum was taken, the emission of sodium had already been greatly reduced. No doppler shift can be observed because at the time of observation the comet just changed direction with respect to the Earth. Therefore the sodium emission lines of the comet and the earth's atmosphere (light pollution) coincide. This is not 100 % certain, it is possible that the rest of the emission lines of the earth's atmosphere are still in the spectrum.
Translated with www.DeepL.com/Translator (free version)