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67P/Churyumov-Gerasimenko

Perihelion distance : 1.21 AU
Inclination to ecliptic : 4 °
Orbital period : 6.43 years
Eccentricity : 0.65

NASA/JPL elements
IAU/MPC elements


On 2021 Aug 08 00h49 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)13.4
Aperture radius for m10.7 '
Magnitude (MPC m2)14.6
Aperture radius for m26 "
Coma diameter1.1 '
Coma condensation degree (DC)6
Tail length0.07 °
Tail position angle (PA)250 °
r (dist/Sun) 1.595 AU
d (dist/Earth) 0.978 AU
Right ascension28.52229 °
Declination+6.91972 °
Instrumental configurationConfig1
InstrumentDobson 407mm F/D=4.3
Instrument typeNewton
Instrument aperture (0=naked eye)407 mm
Instrument focale length1750 mm
FilterNone
CameraSony alpha7s
SensorDC
Sensor size36x24 mm2
Sensor pixels number4240x2832
Sensor temperature11 °C
Binning2x2
MountDobson sur table équatoriale JMI
MotorizationYes
AutoguideNo
Exposure total time128 s
Picture exposure details12x3.2s+20x2.5s+10x4s
Sky transparency (naked eye max mag)6
Seeing3
Moon phase180 °
Moon elongation110 °
Air mass2.0
LocationValdrome - Astrociel
Reference stars catalog (ast)APASS
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingbinning,flat,alignement stellaire, alignement comète,somme,retrait gradient
Observation submission date2021 Aug 19 17h43m29s

(Record n° 23837)

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