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C/2018 W2 (Africano)

Perihelion distance : 1.46 AU
Inclination to ecliptic : 117 °
Eccentricity : 1

NASA/JPL elements
IAU/MPC elements


On 2019 Jul 30 01h34 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)11.6
Aperture radius for m11.6 '
Magnitude (MPC m2)14.6
Aperture radius for m26.0 "
Coma diameter3.2 '
Coma condensation degree (DC)4
r (dist/Sun) 1.550 AU
d (dist/Earth) 1.791 AU
Right ascension66.85292 °
Declination+59.08611 °
Instrumental configurationConfig1
InstrumentDobson T407mm F/D 4.3
Instrument typeNewton
Instrument aperture (0=naked eye)407 mm
Instrument focale length1750 mm
FilterNone
CameraSony Alpha 7s
SensorDC
Sensor size36*24 mm2
Sensor pixels number4240*2832
Binning2x2
MountDobson sur table equatoriale JMI
MotorizationYes
AutoguideNo
Exposure total time93 s
Exposure details6+29*3sec
Sky transparency (naked eye max mag)6
Seeing4
Moon phase165 °
Air mass1.5
LocationStation de Valdrôme (26)
Reference stars catalog (ast)GSC (HST)
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingalignement, somme, retrait gradient
Observation submission date2019 Aug 01 17h27m13s

(Record n° 20849)

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