C/2019 Y1 (ATLAS) (Record n° 21948)
Orbital period : 792.80 years
NASA/JPL elements
IAU/MPC elements
On 2020 Apr 23 20h47 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 8.6 Aperture radius used for m1 2.3 ' Nuclear magnitude (m2) 12.4 Aperture radius used for m2 6 " Coma diameter 4.5 ' Coma condensation degree
(DC) 5 Tail length 0.07 ° Tail position angle
(PA) 10 ° r (dist/Sun) 1.093 AU d (dist/Earth) 1.132 AU Right ascension 01 40 05.0 h m s Declination +74 39 38 ° ' " Instrumental configuration Config2 Instrument Dobson 407mm F/D 4.3 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 alpha 7S Sensor DC Sensor size 36x24 mm2 Sensor pixels number 4240x2438 Sensor temperature 20 °C Binning 2x2 Mount Dobson seule Motorization No Autoguide No Exposure total time 20.5 s Exposure details 17*1/2+15*0.8s Sky transparency (naked eye max mag) 4.5 Air mass 2 Location Versailles Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing Division flat, alignement, somme, retrait gradient résiduel +-bon à cause des lumières parasites Observation submission date 2020 Apr 29 21h29m08s