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C/2019 T4 (ATLAS)


NASA/JPL elements
IAU/MPC elements


On 2022 Mar 08 00h30 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)12.1
Aperture radius used for m11 '
Nuclear magnitude (m2)13.9
Aperture radius used for m26 "
Coma diameter1.5 '
Coma condensation degree (DC)6
Afrho9000 cm
Afrho error1200 cm
r (dist/Sun) 4.313 AU
d (dist/Earth) 3.448 AU
Instrumental configurationConfig1
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 alpha7S
SensorDC
Sensor size36*24 mm2
Sensor pixels number4240*2832
Sensor temperature-2 °C
Binning2x2
Mountdobson sur table equatoriale JMI
MotorizationYes
AutoguideNo
Exposure total time83.6 s
Exposure details21x1.5s+25x2s
Sky transparency (naked eye max mag)6
Seeing2
Moon phase135 °
Moon elongation180 °
Air mass3.9
LocationBoulonville
Reference stars catalogAPASS
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingbinning,flat,alignement,somme,retrait gradient
Remarks or commentsAfrho sur couche R (AfrhoN&B=7200+-1050cm)
Observation submission date2022 Mar 08 18h54m10s

(Record n° 25249)

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