C/2019 L3 (ATLAS) (Record n° 24729)
Perihelion distance : 3.56 AU
Inclination to ecliptic : 48 °
Eccentricity : 1
NASA/JPL elements
IAU/MPC elements
On 2021 Dec 30 22h35 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 9.1 Aperture radius for m1 3.0 ' Magnitude (MPC m2) 12.6 Aperture radius for m2 6 " Coma diameter 6.0 ' Coma condensation degree
(DC) 6 Tail length 0.13 ° Tail position angle
(PA) 310 ° r (dist/Sun) 3.556 AU d (dist/Earth) 2.592 AU Right ascension 108.44313 ° Declination +33.12944 ° Instrumental configuration Config1 Instrument Dobson 407mm F/D 4.3 Instrument type Newton Instrument aperture (0=naked eye) 407 mm Instrument focale length 1750 mm Filter None Camera SONY alpha7S Sensor DC Sensor size 36*24 mm2 Sensor pixels number 4240*2832 Sensor temperature 10 °C Binning 2x2 Mount dobson sur table equatoriale JMI Motorization Yes Autoguide No Exposure total time 82.7 s Exposure details 19x2.5s+11x3.2s Sky transparency (naked eye max mag) 5.5 Seeing 4 Moon phase 140 ° Moon elongation 180 ° Air mass 1.12 Location Boulonville Reference stars catalog (ast) APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing binning, flat, alignement, somme, retrait gradient - images jpg
Remarks or comments couche verte mV=9.0
Sur images RAW (47.5s): m1=9.2, m2=12.0 (non saturé/linéaire) Observation submission date 2022 Jan 02 19h44m14s