Comet C/2021 E3 (ZTF) - 17 march 2021

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Af(rho) data according the CARA-approach is available via request to CARA-coordinator

http://cara.uai.it

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-m f/3.8 reflector + CCD

ACK NEOCP B96 file updated 2021.04.17 10:53:03

NET Gaia DR2

ZTF0Kij KC2021 04 17.07595 21 00 17.14 +33 20 53.5 19.7 G B96

ZTF0Kij KC2021 04 17.10044 21 00 17.44 +33 21 00.7 19.6 G B96

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COD X02

OBS BRIXIIS Observatory

CATALOG: Gaia DR2 - BAND: G

10x10 20x20 30x30 40x40 50x50 60x60 SNR SB COD

COMET UTC +/- +/- +/- +/- +/- +/- N FWHM CAT

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AFRHO LOG

COMET UTC DELTA r BOX " MAG RSR CM +/- AFRHO OBS

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Observation made on 1 7march , while this object was still mentioned on the PCCP of the minorplanetcenter , with Orion Optics AG16 newton telescope from my backyard, BRIXIIS Observatory, Kruibeke, Belgium

Photometry obtained with FOCAS-II software:

comet C/2021 E3 (ZTF), Erik Bryssinck, BRIXIIS Observatory

MPEC J71: COMET C/2021 E3 (ZTF)

An object detected on Mar. 9 UT by Palomar Mountain-ZTF (I41) was initially reported as a possible NEO. E. Guido reports a condensed 7" coma in a stack of 14 120-second unfiltered exposures taken on Mar. 19 by Telescope Live, Oria (Z08). Additional reports of cometary features are as follows:

OC Date Reporter Coma Tail PA Exposures

B96 2021-04-17 E. Bryssinck 8" 7" 335 30x120s

N51 2021-04-18 K. Sharma 3" 5" 97 300s