C/2019 Y4 (ATLAS) (Record n° 21743)
Orbital period : 5870.00 years
NASA/JPL elements
IAU/MPC elements
On 2020 Mar 15 19h57 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 9.5 Aperture radius used for m1 5.0 ' Nuclear magnitude (m2) 13.6 Aperture radius used for m2 6 " Coma diameter 9 ' Coma condensation degree
(DC) 5 r (dist/Sun) 1.772 AU d (dist/Earth) 1.118 AU Right ascension 09 50 49.0 h m s Declination +65 54 51 ° ' " Instrumental configuration Config1 Instrument Dobson T407mm 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 4240x2832 Sensor temperature 6 °C Binning 2x2 Mount Dobson sur Table equatoriale JMI Motorization Yes Autoguide No Exposure total time 81 s Exposure details 4+19x3+10x2sec Sky transparency (naked eye max mag) 6 Seeing 4 Moon phase 85 ° Air mass 1.2 Location Boulonville (28) Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing flat, alignement, retrait gradient, somme Observation submission date 2020 Mar 17 19h21m24s