C/2019 Y4 (ATLAS) (Record n° 21718)
Orbital period : 5870.00 years
NASA/JPL elements
IAU/MPC elements
On 2020 Mar 12 21h45 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 10.0 Aperture radius used for m1 3.5 ' Nuclear magnitude (m2) 12.9 Aperture radius used for m2 10 " Coma diameter 7 ' Coma condensation degree
(DC) 4 r (dist/Sun) 1.823 AU d (dist/Earth) 1.137 AU Right ascension 10 08 30.8 h m s Declination +64 44 50 ° ' " Instrumental configuration Config1 Instrument T407mm Dobson Instrument type Newton Instrument aperture (0=naked eye) 407 mm Instrument focale length 1750 mm Instrument focale/diameter 4.29 Filter(s) None Camera Sony alpha7s Sensor DC Sensor size 24x36 mm2 Sensor pixels number 2828x4240 Sensor temperature 7 °C Binning 2x2 Mount Dobson Motorization No Autoguide No Exposure total time 17 s Exposure details 8x0.5+7x0.7+6x1+2sec Sky transparency (naked eye max mag) 6 Seeing 4 Moon phase 45 ° Moon elongation 100 ° Air mass 1.1 Location Boulonville Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing division flat, alignement, somme Remarks or comments Pas de suivi motorisé Observation submission date 2020 Mar 13 17h55m02s