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C/2020 R4 (ATLAS)

Orbital period : 974.10 years

NASA/JPL elements
IAU/MPC elements


On 2021 Apr 26 23h40 UT by Jean-Michel Vienney


(Copyright Jean-Michel Vienney)

Spectrum .fitDownload
Spectrum picture sampling (scale)0.456 Å/pix
Spectrum resolution539 dL/L
r (dist/Sun) 1.369 AU
d (dist/Earth) 0.473 AU
InstrumentSW D=250mm F/D=4
Instrument typeNewton
Instrument aperture (0=naked eye)250 mm
Instrument focale length1000 mm
Instrument focale/diameter4
Filter(s)None
SpectrometerAlpy
CameraATIK 640EX
SensorCCD
Sensor size12.5*2.3 mm2
Sensor pixels number2750*500
Sensor temperature-10 °C
Binning1x1
MountSW EQ6R
MotorizationYes
AutoguideYes
Exposure total time4214 s
Sky transparency (naked eye max mag)3
Seeing3
Moon phase2 °
Moon elongation45 °
Air mass1.3
LocationButhiers 77760 France
Used softwaresISIS
Image processingStandard ISIS Rep instrumentale sur HD136849
Observation submission date2021 May 02 23h08m31s

(Record n° 23308)

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