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C/2019 Y4 (ATLAS)

Orbital period : 5870.00 years

NASA/JPL elements
IAU/MPC elements


On 2020 Apr 22 20h55 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)10.2
Aperture radius used for m12.5 '
Nuclear magnitude (m2)15.1
Aperture radius used for m26 "
Coma diameter4.5 '
Coma condensation degree (DC)1
r (dist/Sun) 1.069 AU
d (dist/Earth) 0.970 AU
Right ascension05 50 18.3 h m s
Declination+63 27 13 ° ' "
Instrumental configurationConfig2
InstrumentDobson 407mm F/D 4.3
Instrument typeNewton
Instrument aperture (0=naked eye)407 mm
Instrument focale length1750 mm
Instrument focale/diameter4.29
Filter(s)None
CameraSony alpha 7S
SensorDC
Sensor size36x24 mm2
Sensor pixels number4240x2438
Sensor temperature18 °C
Binning2x2
MountDobson seule
MotorizationNo
AutoguideNo
Exposure total time27.8 s
Exposure details34x0.5+31*1/3s
Sky transparency (naked eye max mag)4.5
Air mass1.4
LocationVersailles
Reference stars catalogAPASS
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingDivision flat, alignement, somme, retrait gradient résiduel +-bon à cause des lumières parasites
Remarks or commentsmR=11.3, mV=9.8, mB=10.0 coma 5.5x3.5'
Observation submission date2020 Apr 29 21h10m44s

(Record n° 21946)

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